cruise ships and sustainability

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Sustainable cruises: 6 cruise lines making progress.

These cruise lines are taking steps toward eco-conscious cruising.

Sustainable Cruises

James McEntee | Courtesy of AP Images for MSC Cruises

MSC Cruises' conservation effort is just one of many sustainable choices cruise lines are adopting.

Cruising comes with a lot of positives – it's fun, relaxing, convenient and often relatively affordable. But when it comes to the environment, it isn't all smooth sailing. According to recent research, a large cruise ship can result in a carbon footprint greater than that of 12,000 cars. Another study found that an individual traveler's carbon footprint is roughly eight times greater than the carbon footprint of a person vacationing on land.

"When we measure sustainability, it's important to look at the whole picture, and overall, cruise ships are too big, too dirty and too invasive to pristine ecosystems to be considered sustainable or environmentally conscious," says Marcie Keever, director of oceans and vessels at environmentalist group Friends of the Earth. "Their   significant carbon footprint and ongoing use of polluting scrubber technology that continues to result in the dumping of toxic chemicals into the ocean are two major issues."

So, how does that translate for the average cruiser – and what can you do to make a difference? While some environmentally conscious travelers may choose to take a vacation on land, those who would like to stick with a cruise getaway should consider their options carefully. Not all cruise lines are created equal, and some are making more progress than others in implementing policies around more sustainable fuel types, hybrid-electric ships and their commitments to a cleaner future.

If your heart is set on taking a cruise vacation , consider these tips to leave less of an impact on the environment during your trip.

• Opt for a shorter voyage (or a smaller ship):  One simple way to keep the environment in mind during your vacation at sea is by choosing a shorter itinerary and avoiding massive megaships built to carry thousands of people. "Some cruise lines are limiting the length of cruise runs which is a good start, and [they] are also commissioning smaller vessels to travel shorter distances for shorter periods of time," says Keever. Opting for a midsize ship or a  small ship  and a three- or four-night voyage over a cruise lasting seven to 10 days will keep the mileage to a minimum, which in turn will limit the carbon emissions and other damage inflicted upon the environment.
• Choose a cruise line that values transparency:  In an effort to keep cruisegoers in the loop, many cruise lines have begun making public commitments to improve their operations. On top of that, some have also started including annual sustainability reports on their websites. Major lines like Regent Seven Seas Cruises, Virgin Voyages, Disney Cruise Line, Oceania Cruises and Norwegian Cruise Line all earned an "A" for transparency on Friends of the Earth's 2022 Cruise Line Report Card, which the organization based on the cruise lines' willingness to provide detailed information about environmental practices when asked.

Below, you'll find six cruise lines around the world that are working toward a greener future on the high seas.

Hurtigruten Norway

The largest expedition cruise line in the world, Hurtigruten highlights four pillars on its journey toward sustainability: emissions, people, community and nature. To protect destinations from the effects of overtourism, the line avoids popular areas during peak seasons, restricts the number of guests on shore and limits the size of its vessels. Hurtigruten's ships also source about 80% of their food from local providers and work to minimize the amount of food waste on board.

Perhaps most impactful is Hurtigruten's current work to develop state-of-the-art, eco-conscious vessels. Between 2020 and 2021, the expedition line debuted three battery-powered hybrid-electric ships, and all 14 vessels can be connected to shore power while in port (if the option is available at that destination).

"Hurtigruten is looking to launch zero-emissions ships, which will reduce the amount of heavy fuel they use," notes Keever. The first of these ships is set to launch by 2030; the line is aiming for carbon neutral operations by 2040 and net-zero emissions by 2050.

The cruise provider also uses other eco-conscious equipment and transportation options on tours, including power through solar panels, electric snowmobiles and tour buses, hybrid sightseeing boats and battery-powered catamarans.

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MSC Cruises

Ivan Sarfatti | Courtesy of MSC Cruises

With the goal of achieving a 40% emissions reduction by 2030 and total net-zero cruising by 2050, MSC Cruises ' commitment to the environment spans each of its 20-plus ships. The line has been steadily working toward a more sustainable future for the past 15 years: Since 2008, it has reduced its carbon emissions by 35%. Much of the more recent success stems from MSC's use of liquid natural gas (LNG). The line currently operates two LNG-fueled vessels – MSC World Europa and MSC Euribia – and a third natural gas-powered ship is in the works. Euribia's inaugural sailing in June 2023 was the first net-zero greenhouse gas emissions voyage in history, saving 43 tons of fuel.

Additional environmental efforts include the use of shore energy when in port (as of 2022, 65% of MSC's ships were fitted or retrofitted to use shore power), water-saving technologies that allow ships to self-produce almost all of their water supply on board (to the tune of almost 800,000 gallons maximum per day) and smaller scale features like energy-efficient lighting and ventilation systems.

The eco-conscious initiatives continue on land, where travelers can opt for special shore excursions called "Protectours." These outings are centered on low-impact transportation – think: walking, kayaking, cycling and use of electric or hybrid shuttles. Select Caribbean itineraries may also visit the unspoiled beaches of Ocean Cay MSC Marine Reserve, the line's private island in the Bahamas . Formerly used as an industrial sand excavation site, Ocean Cay covers 64 square miles of marine reserve and is home to 400 restored coral reef colonies, as well as a variety of bird, fish and other marine species. The island runs on a mix of solar panels and energy-efficient power sources; and single-use plastics are prohibited.

Book an MSC Cruise on GoToSea, a service of U.S. News.

Aurora Expeditions

Courtesy of Aurora Expeditions

Billed as 100% climate neutral and a member of two sustainability groups – the Association of Arctic Expedition Cruise Operators and the International Association of Antarctica Tour Operators – Aurora Expeditions is committed to responsible cruising. The line carries small groups of adventurers on 10- to 26-day voyages to the Arctic, Antarctica and other less-traveled destinations, such as the Patagonia wilderness.

To offset its greenhouse gas emissions, Aurora Expeditions invests in two climate action initiatives: a renewable energy wind farm in Taiwan and a conservation program in Australia. Environmentally focused cruisers may feel most at home aboard the Sylvia Earle expedition ship, which has seven decks all named after well-known ocean preservationists. On day six of each itinerary on the Sylvia Earle, Aurora hosts a Sustainable Sea Day, when seafood is not served on board to help protect marine populations.

Additional environmental efforts include specialized water and waste management systems, efficient onboard energy sources, reduced single-use plastics, locally sourced food, eco-friendly products on board and more. On top of that, two of Aurora Expeditions' ships, Greg Mortimer and Sylvia Earle, feature a fuel-efficient bow design that can travel at higher speeds while reducing wave-load vibrations, which in turn produces fewer emissions.

Havila Voyages

Havila Voyages debuted in late 2021 and operates four small ships along the Norwegian coast. Hybrid vessels are equipped with the largest ship battery packs found among passenger ships, which power each ship for up to four hours with zero emissions. The ships utilize LNG for the remaining route; between the natural gas and battery power, carbon emissions are cut by 35%. Havila has the goal of reaching climate-neutral operations by 2028 and emission-free operations by 2030.

On board, Havila serves locally sourced meals and is committed to reducing food waste; as such, there are no buffets. In 2022, the line successfully limited the daily average food waste per passenger to 71 grams (about 2.5 ounces). Havila ships also minimize the amount of paper and plastic products on board, encouraging guests to bring and refill reusable water bottles instead.

Travelers looking to go the extra mile have the option of participating in Havila's Eco-Voyager Program, which challenges guests to make environmentally friendly choices while on board. Items on the checklist include reusing towels and opting for room service every other day, recycling any trash at the ship's dedicated stations, unplugging device chargers when not in use and more. The line also offers eco-excursions in port; tour groups are kept small and Havila partners with local providers that utilize eco-friendly transportation, like battery-powered buses.

Virgin Voyages

Courtesy of Virgin Voyages

Like other lines on this list, Virgin Voyages aims to achieve net-zero carbon emissions by 2050. Virgin's ships are all on the newer side (the line's first ship, Scarlet Lady , debuted in 2021), so they benefit from modern technology that optimizes energy and fuel usage. Additionally, the ships boast futuristic features like in-room energy-saving sensors to operate the lights, curtains and air conditioning, as well as smart wearable bands (used as room keys, for boarding and more) made of recycled ocean plastic.

Virgin's ships serve ethically sourced seafood and other local ingredients, and they do not have any buffets, which helps lower food waste on board. There is also an onboard recycling system, and single-use plastics are not on any ships. In fact, Virgin primarily offers sustainable products for all of its paper, plastic and other disposable items (using materials like wheat and sugar cane stalks). 

All three of Virgin Voyages' vessels utilize bipolar ionization (BPI) systems shipwide. "Dozens of cruise companies have made their ships more sustainable by adding BPI technology to their HVAC systems," says Steve Levine, president and CEO of sustainable indoor air technology company AtmosAir Solutions. "BPI devices make ships more energy efficient by lowering the amount of outside air that needs to be brought into a ship, essentially recycling and treating the air indoors and saving energy."

Book a Virgin Voyages cruise on GoToSea.

Courtesy of Ponant

Founded in 1988, PONANT is a French-owned luxury line of expedition yachts. The line is working toward six major environmental goals: minimizing nitrogen and sulfur oxide emissions, reducing carbon emissions, banning single-use plastics, reusing and tracing all waste, investing in scientific research and supporting the development of protected marine areas.

In practice, PONANT utilizes high-quality wastewater treatment systems, navigation technology to help reduce fuel usage, and locally sourced food and drinks. On top of that, 60% of packaging on board is recycled, and PONANT regularly organizes beach cleanups. In 2018, PONANT founded the PONANT Foundation, which aims to support conservation efforts across the oceans and polar regions.

PONANT's Le Commandant Charcot expedition ship runs on a combination of battery power and LNG, and the line was the first to be awarded Green Marine certification for its commitments to improving its sustainability.

Why Trust U.S. News

Nicola Wood is a senior travel editor who manages the U.S. News Best Cruise Lines rankings. She is always reading up on the ways cruise lines are evolving and working toward a more sustainable future. Her passion for the environment extends beyond the cruising industry; in fact, she and some of her colleagues recently worked with EARTHDAY.ORG to pick up almost 750 pounds of trash along the Anacostia River in Washington, D.C., in celebration of U.S. News & World Report's 90th anniversary . Wood used her researching skills and guidance from environmental experts to write this article.

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5 ways royal caribbean practices sustainability, conserving heat from engines, producing fresh water and reducing single-use plastics are just some of the initiatives that go on behind the scenes..

Royal Caribbean’s sustainable practices span work in ocean conservation, waste management and emissions.

Credit: Royal Caribbean

One of the many reasons to take a cruise is the opportunity to explore the natural beauty of both the oceans and destinations around the world, from the cool waters and wilderness of Alaska to the warm Caribbean Sea and its idyllic islands.

These wonders depend on the environment, which is why Royal Caribbean has spent decades protecting the destinations you visit and the communities that call them home. The best part? Your vacations can be as responsible as they are memorable.

It all started more than 30 years ago with a recycling program called Save the Waves . That’s now grown to involve partnerships with experts like World Wildlife Fund (WWF) and innovations to use, conserve and repurpose energy and reduce emissions, waste management and more. Although these efforts mostly go on behind the scenes, what you’ll find “under the hood” are many features and initiatives on both Royal Caribbean’s ships and private destinations, like Perfect Day at CocoCay ,

Read on to dive into five of Royal Caribbean’s key sustainability practices:

Energy is conserved with features like LED and fluorescent lights. Ships are also increasingly using liquefied natural gas (LNG), the cleanest-burning marine fuel.

From entertainment venues that span four “stages”—air, ice, theater and water—like the signature AquaTheater, where there’s high diving, slacklining, 3D flying and more, to adventures never seen before on land or at sea—like the North Star observation capsule that offers unrivaled 360-degree views of the world below—innovations run the gamut on Royal Caribbean ships . They include sustainable features, too.

When it comes to sustainability—including all the ways energy is used, conserved and repurposed—the smallest details matter. That’s why Royal Caribbean uses energy-efficient appliances, LED and fluorescent lights and an air lubrication system that allows ships to float on air. Icon of the Seas — which will be Royal Caribbean’s most sustainable ship to date when it sets sail in January 2024 —as well as Wonder and Odyssey are also all shore-power ready, meaning they can plug into local power grids, reducing emissions by replacing the need to use fuel every time they’re in town.

Icon will also be the brand’s first ship to be powered by liquefied natural gas (LNG) and fuel cell technology. LNG is considered the cleanest-burning marine fuel available and fuel cells (like a battery pack for your laptop or in your mobile phone—but a lot bigger!) generate power without producing any pollutants.

Fun fact : Royal Caribbean’s new Galveston terminal, which opened in 2022, is the world’s first to use zero energy.

Up to 90% of the freshwater used onboard—for drinking, showers, waterslides, pools, etc.—is produced on ships.

Water makes up 70% of the earth; it’s how you cruise from one destination to the next. It’s also used to clean, hydrate and allow guests to make a splash at the largest waterpark at sea. Thanks to desalination and reverse osmosis systems, ships can produce about 90% of the freshwater used on board all on their own. This water is used for everything from highspeed waterslides and pools for days to drinking water and shower water.

When it comes to conserving water, it’s about getting creative. Take the AC unit in your room: While it’s keeping you cool, the condensation from it is treated and repurposed to clean laundry. And Perfect Day at CocoCay  has a water specialist that uses treated water from Thrill Waterpark for the private island’s landscaping.

Fun fact: Desalination and reverse osmosis turn salt water into freshwater by removing minerals and contaminants. It’s a common process used on ships, submarines and in agriculture.

Royal Caribbean has reduced single-use plastics by 60% in order to protect the oceans that endangered species like sea turtles and whale sharks call home.

Around the world, waste impacts natural habitats and wildlife, including endangered sea turtles , humpback whales and more. That’s why every ship is equipped to be landfill-free. Having a long-standing partnership with Green Hub, a waste vendor program, ensures that all trash is either recycled, repurposed or sent to a waste-to-energy facility. Because of that, on average, 85% of the waste on board never reaches a landfill.

It’s also about taking a look at what’s creating that waste. Royal Caribbean has reduced single-use plastics , like straws, plastic bags, water bottles, stirrers and picks, by 60%. You’ll also notice other ongoing efforts, such as reusable silverware and glassware at restaurants . And speaking of restaurants, food waste has been reduced by 24% through the Win on Waste project, which helps ships calculate exactly how much food they’ll need through the use of both technology and a Food Operations Excellence Controller on board.

Fun fact : With partners like WWF, more programs and goals have been developed to improve the long-term health of the oceans and their wildlife. You can learn more about them here .

Savor freshly shucked oysters and other sustainably sourced seafood at onboard restaurants like Hooked Seafood.

Sustainable Sourcing

Before, between and after your adventures, you can break bread with your family and friends at a variety of restaurants on board. There’s something for everyone, whether you’re craving ice-cold brews and bar food with a side of friendly competition at Playmakers Sports Bar & Arcade or fresh sushi and sizzling hibachi at Izumi. Along with all those options, Royal Caribbean is also serving up sustainably sourced foods.

A key part of this initiative is sustainable seafood sourcing. The goal is to source 90% of wild-caught seafood and 75% of farmed seafood from suppliers certified by the Marine Stewardship Council and the Aquaculture Stewardship Council—a first for the cruise industry. Sustainable sourcing gives time for certain species, like tuna and salmon, to regrow their population. By already meeting the benchmark of 75% farmed seafood from the Marine Stewardship Council, this practice is leading to better-quality dishes on your table, too.

Fun fact : The Marine Stewardship Council aims to set standards for sustainable fishing. The Aquaculture Stewardship Council establishes guidelines on farmed seafood while ensuring sustainable aquaculture. 

Eco-friendly shore excursions allow you to see a variety of natural sites, sustainably. Think: green Caribbean jungles, pristine Alaskan glaciers and more.

Sustainable Tourism

On a cruise, you can set your sights on exploring multiple distant beaches, natural reserves, metropolitan city centers and far-flung destinations —all in one vacation. A great trip, whether you’re exploring a remote island or trying out a new cuisine, is all about the environment, and as visitors, it’s important to protect the varied nature and rich cultures we’re delving into.

Royal Caribbean set a goal to offer more than 1,000 shore excursions around the world that are certified by the Global Sustainable Tourism Council (GSTC) by 2020. That means the shore excursions are one-of-a-kind while also remaining respectful of the local culture and surroundings. Today, more than 3,500 Royal Caribbean excursions are GSTC-certified.

Want to learn more? Every year, Royal Caribbean releases an annual sustainability report , which shares its accomplishments and principles, initiatives and goals for the future.

Explore the Royal Caribbean cruises and the beautiful destinations you can experience here .

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Waste away: exploring sustainability initiatives on-board cruise ships

From an icebreaker powered by liquefied natural gas, to community-friendly itineraries and initiatives designed to eliminate millions of plastic water bottles every year, international cruise operators are catching up with consumer demands for more environmentally aware travel.

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In the hyper-competitive, public relations-obsessed cruise industry, negative press is anathema to operators, who sink or swim by their ability to identify and respond to changing passenger trends.

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As such, cruise lines are investing both financially and politically in environmental stewardship in order to engage with a new generation of travellers demanding more sustainable travel options.

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No surprise then, that Adam Goldstein, global chair of the Cruise Lines International Association (CLIA) and vice-chairman of Royal Caribbean Cruise Lines (RCCL), used two recent keynote speeches at The Economist ’s 2019 World Ocean Summit in Abu Dhabi, and at the ITB travel show in Berlin, to drive home the importance of marrying growth opportunities with sustainability.

“The water around and below us, the air above us, the communities around us, the people who work for us; all are critical factors when it comes to planning sustainable growth strategy for the cruise industry,” he said. “With opportunity comes responsibility, and we are working as an industry to meet those responsibilities.

“The cruise sector represents 2% of the overall travel industry, we are a small part of the 1.5 billion individual trips made per year, but we need to play a leadership role in sustainable tourism.”

Oceania and Regent wage war on single-use plastics

In January, Miami-based Oceania Cruises became the latest operator to announce an initiative aimed at reducing plastic water bottle waste. In partnership with eco-friendly water company Vero Water, Oceania has pledged to eliminate millions of plastic water bottles every year as part of its OceaniaNEXT enhancement and the company’s larger Sail & Sustain environmental programme.

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Beginning in April with the Riviera , the line’s six-strong fleet will be outfitted with Vero’s distillation systems, which Oceania claims will ultimately eliminate around three million plastic bottles annually.

The Vero Water service will be implemented in two phases, with the first focusing on installing the onboard water service in suites, staterooms, restaurants, lounges and bars. During phase two, all guests will be provided with their own re-useable Vero Water bottle which will be theirs to keep.

The following month, Regent Seven Seas Cruises (RSSC) – which, like Oceania, is part of Norwegian Cruise Line Holdings’ stable of brands – announced it will become the first luxury ocean cruise line to eliminate single-use plastic bottles, having recently got rid of single-use plastic straws.

According to RSSC, the transition from traditional bottled water to premium Vero Still and Sparkling water will eliminate approximately two million plastic bottles annually across the cruise line’s fleet.

Is scrubbing technology safe for the environment?

Lindblad Expeditions, the cruise line that specialises in adventure expeditions to destinations such as Antarctica and Galápagos, began working towards the elimination of avoidable plastic waste in 2007, when it banned single-use plastic water bottles. Instead, guests receive individual reusable stainless-steel bottles that may be refilled at filtered-water stations located around the vessels.

“The next phase in executing a broader reduction in our plastic packaging requires an industry-wide mandate to our suppliers to explore sustainable alternatives,” said Lindblad, which partners with National Geographic .

A cursory glance at Cruise Industry News ’s database reveals that at least seven operators – TU, MSC, AECO and Royal Caribbean Cruises (RCC) among them – made similar commitments in 2018.

However, some critics argue that such schemes constitute a drop in the proverbial ocean compared with the industry’s overall environmental impact, and that shipping fuel is a more pressing concern.

Shipping fuel emits large amounts CO 2 , sulphur oxides and nitrogen oxides (NOx) but also particulate matter containing organic carbon, black carbon, polycyclic hydrocarbons and heavy metals. From 2020, IMO regulations will require ships to change from heavy sulphur fuel to more expensive low-sulphur alternatives with a maximum sulphur content of 0.5%, compared with the current 3.5%.

Rather than purchasing cleaner fuel, many operators are opting to install exhaust cleaning systems, or ‘scrubbers’, which use seawater to ‘wash’ dirty fuel before sending the washwater back into the ocean. More expensive closed-loop systems contain the washwater and dispose of it safely on land.

Fuel cell technology and ship design

According to The Guardian , analysts say about 90% of cruise ships are planning to use such systems, despite concerns that ‘scrubbing’ heavy sulphur fuel constitutes a pollution threat that could be particularly damaging when ‘washed’ fuel is released in congested waters containing multiple ships.

Miami-based RCCL, for example, plans to install them in up to 60–70% of its vessels by next year.

“We believe AEP (advanced emission purification) technology is the best approach to meet IMO’s 2020 regulations,” RCCL said in a statement. “The technology, which removes up to 98% of sulphur, allows us to operate in compliance in areas where compliant fuel sources may become limited.

“We continue to explore alternative fuel options, such as liquefied natural gas (LNG) and fuel cells.”

RCCL is collaborating with Finland-based shipyard Meyer Turku to pioneer fuel cell technology on two new vessels, which are set to join parent company RIL’s fleet in 2022 and 2024. Running primarily on LNG will allow them to eliminate sulphur emissions, and reduce production of NOx and particulates. The new-builds will also be able to operate using distillate fuel in ports without LNG infrastructures.

“The beauty of fuel cells is that they produce electricity with zero carbon footprint – the only emission is water,” chairman and CEO Richard Fain said.

Ship design and its impact on the environment is another area of focus for RCC. The operator’s Quantum-class ships have a specialised hull that captures micro-bubbles, reducing drag and improving fuel efficiency by 10%.

“We have already made great progress,” said Susan Bonner, MD Australia and New Zealand. “Our goal is to reduce greenhouse gas emissions by 35% by 2020; through our investment in advanced emission purification systems, we have already reduced them by 25%.”

The ice-breaker powered by LNG

French cruise operator Ponant’s new icebreaker, to be called Le Commandant Charcot , will be the world’s first electric hybrid polar exploration ship powered by LNG – in addition to electric and battery power – opening up destinations hitherto only accessible to polar exploration vessels.

“It means you can go into an area such as the North Pole and just rely on electric power,” Sarina Bratton, chairwoman Asia-Pacific, told Traveller . “Conceivably, we will have no noise, no vibrations; that is the first time that has been done in an icebreaker.”

Ponant’s eco credentials also stretch to scientific research – the new ship will have an on-board lab – building relationships with local communities in the remote areas where the company operates, and designing itineraries aimed at reducing the impact of tourism on indigenous communities.

At the end of 2018, CLIA cruise lines made what amounted to the first-ever industry-wide emissions commitment aimed at improving sustainability on the seas, by pledging to reduce the rate of carbon emissions across the industry fleet by 40% by 2030.

“We want to play our part in working towards an emission-free maritime sector,” said CLIA’s Adam Goldstein, “and this is an important first step.”

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We celebrate the seven seas by announcing our Blue Green Promise℠. Thirty years ago, we launched our first environmental protection initiative, Save the Waves, and since then we’ve continued our efforts to protect one of our most precious natural resources — our oceans.  Our Blue Green Promise is our renewed commitment to support resilient and sustainable ocean communities worldwide — a promise we will work to live up to every day.

Destination Net Zero

Destination Net Zero is our comprehensive vision for how we will achieve net zero emissions by 2050. We will use every tool at our disposal, including industry-leading energy efficiency and innovative machine-learning technologies to advance our path and role in achieving net zero. As part of our commitment, we plan to introduce a net zero emissions cruise ship by 2035. Destination Net Zero builds on the progress we’ve already made and will include an industry-first pledge to the rigorous Science Based Targets initiative.

Plastic Straw Free since 2019

Celebrity Cruises eliminated plastic straws fleetwide, as part of a comprehensive plastic elimination program. Since 2019, we only offer paper straws as opposed to plastic.

Save the Waves

In everything we do, Celebrity Cruises is ever conscious of our special responsibility to protect our marine ecosystems. Protecting the world's seas and the rich marine life they support is a way of life, and a way of doing business, for Celebrity Cruises. This commitment is the foundation of Save the Waves, our comprehensive environmental protection program established by our parent company in 1992.

Save the Waves is the foundation of our environmental initiatives. It began in 1992 and evolved from a recycling program to a company-wide philosophy. It has become an integral part of each crew member's job and is the backbone of daily operations.

Go Green is the latest addition to our existing Save the Waves program. Our new housekeeping initiative allows you to earn rewards while reducing your footprint. Opt-in for reduced housekeeping services to conserve energy and resource consumption. You’ll still experience the highest standards of cleanliness, plus the added flexibility of choosing your preferred time of service -all while traveling more responsibly.

Community Outreach & Achievement

We proudly sail some of the most environmentally-friendly ships, ensuring the beautiful places we visit stay that way.

Keeping our oceans clean doesn't just make good business sense. It's critical to the future of our planet. And you don't have to look far to find examples of our efforts on our ships.

Galapagos Stewardship

Aboard the Celebrity Xpedition ®   Xploration®, and Celebrity Flora®, we've planned our entire Celebrity Galapagos experience in conjunction with the Galapagos National Park. This journey follows strict environmental guidelines, and our naturalist guides are certified by the Galapagos National Park. We've also established the Galapagos Fund, an onboard conservation program that gives guests an opportunity to participate in the ongoing conservation of the islands. The Program draws on Celebrity Xpedition guest donations, totaling approximately $150,000 annually, which is matched by Celebrity with cruise credits. Donations to this fund are used exclusively to benefit charitable organizations in the Galapagos Islands. We invite you to read more about our environmental stewardship efforts below.

Sustainability Report

Explore our commitment to maintaining healthy oceans and pristine ecosystems as we sail around the world through our annual Sustainability Report. The report provides a comprehensive update on our sustainability and ESG efforts from ship to shore.

Celebrity Cruises, along with our parent company Royal Caribbean Group, is committed to the environments and communities where we operate.

It is our responsibility to help protect and preserve the oceans and coastal communities that bring our guests so much delight. We are also committed to helping in the communities that our employees and their families call home. Healthy oceans mean that millions of people have access to food, oxygen, transportation, and – in our case – the joy of cruising into the horizon.

You can learn more about our sustainability journey HERE

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Can the World’s Largest Cruise Ship Really Be Climate-Friendly?

The newly christened Icon of the Seas is filled with energy-efficient technology. But some climate experts say the biggest challenge with a ship that can accommodate nearly 8,000 people is its size.

By Ceylan Yeginsu

On Tuesday, in a ceremony that, of course, involved a soccer ball, the Argentine soccer superstar Lionel Messi pressed a button and a bottle of champagne smashed against the bow of Icon of the Seas, christening the world’s largest cruise ship at its home port of Miami. Like an A-list celebrity stepping onto the red carpet, the arrival of Royal Caribbean’s 250,800-ton ship has captured the world’s attention, with some marveling over its cutting-edge features, like the largest water park at sea, while others criticize the gigantic ship’s potential to damage the environment.

With the capacity to carry nearly 8,000 people, the 20-deck, 1,198-foot-long vessel — whose inaugural cruise with paying passengers departs Jan. 27 — is the size of a small city. There are eight “neighborhoods” packed with amenities that include a 55-foot waterfall, six water slides and more than 40 restaurants, bars and entertainment venues.

According to Royal Caribbean, the ship, which is registered in the Bahamas, also sets a new standard for sustainability with the use of energy-efficient technology designed to minimize the ship’s carbon footprint and move closer to the company’s goal of introducing a net-zero ship by 2035.

“We live by one single philosophy, which is to deliver the best vacations responsibly,” said Nick Rose, the vice president of environmental stewardship at Royal Caribbean Group. “And to do that we build with the core principles of sustaining our planet and communities.”

For decades the cruise industry has been criticized for its negative impact on the environment. A 2021 study published in the Marine Pollution Bulletin found that despite technical advances, cruising remains a major source of air, water and land pollution affecting fragile habitats and human health.

While environmental groups have welcomed some of the features on Icon of the Seas, like its advanced water treatment system, some say building such huge ships is contrary to the cruise industry’s long-term goals of sustainability and preservation.

“The ships are getting bigger and bigger and that is the wrong direction for the cruise industry to be going,” said Marcie Keever, director of the Oceans and Vessels Program at the environmental organization Friends of the Earth . “If you were really thinking about sustainability and not your bottom line, you would not be building a cruise ship with a capacity of nearly 10,000 people.”

With more than five different brands, Royal Caribbean has a fleet of 65 cruise ships of various sizes. Icon of the Seas was built to meet demand and deliver experiences that its consumers were seeking, the company said, adding that all its ships carry the same sustainability principles of energy efficiency, and advanced waste and water management.

Here’s a look at some key features that Royal Caribbean says make Icon of the Seas more sustainable and how they stack up.

Transitioning to alternative energy sources

Icon of the Seas is Royal Caribbean’s first ship to be powered by liquefied natural gas, or L.N.G., a fossil fuel that the cruise industry has touted as a cleaner alternative to the commonly used heavy fuel oil.

“L.N.G. is currently the fossil fuel available at a scale that has the best performance in reducing atmospheric emissions,” said Cruise Lines International Association, the industry’s trade group, in its 2023 Environmental Technologies and Practices Report, citing analysis from Sea-LNG , an industry coalition that promotes the benefits of L.N.G. as a viable marine fuel.

But environmental analysts are concerned about L.N.G.’s long-term problems. Despite emitting around 25 percent less carbon dioxide than conventional marine fuels, they say, L.N.G. is mostly methane, a powerful gas that traps more heat in the atmosphere over time than carbon dioxide.

According to a 2020 greenhouse gas study by the International Maritime Organization, the United Nations body that regulates global shipping, the use of L.N.G. as a marine fuel grew 30 percent between 2012 and 2018, resulting in a 150 percent increase in methane emissions from ships.

Bryan Comer, the marine program director at the International Council on Clean Transportation, said the reason methane emissions have grown faster than the use of L.N.G. is because ships are switching from steam turbines to dual-fuel internal combustion engines. “They are more fuel efficient, but emit large amounts of unburned methane to the atmosphere in the form of ‘methane slip’ from the engine,” he said, pointing to I.C.C.T. research that predicts demand for L.N.G. will triple between 2019 and 2030, as will methane emissions.

“Even if ships used 100-percent renewable L.N.G. bio or e-fuels, methane emissions from ships would still double between 2019 and 2030 because of methane slip,” he added.

Royal Caribbean says that L.N.G. was the most viable alternative fuel available when decisions were being made about how to build Icon of the Seas more than 10 years ago.

“People will say L.N.G. is not the long-term fuel and we agree and view it as transitional,” Mr. Rose said. “We have built the ship to make it adaptable to future fuel sources.”

The company is preparing to debut the Celebrity Xcel next year, a 3,248-passenger ship that will be equipped with a tri-fuel engine designed to accommodate methanol, which several environmental groups consider to be one of the most promising fuels to achieve carbon-neutral sailing.

Shore power capabilities

When cruise ships are docked at ports, their engines and diesel generators are often running on fuel, emitting carbon dioxide into populated areas. Icon of the Seas has been built to run on shore power electricity in ports, a cleaner alternative to fuel, and hopes to become one of the first cruise ships to plug into the local power grid at Port Miami when shore power facilities are set to become available in the spring.

Three ships can plug in safely and simultaneously at the port on any given day, including Icon of the Seas, a spokeswoman for Port Miami said.

“When it comes to sustainability, there is no silver bullet and we want to pull every lever possible,” Mr. Rose of Royal Caribbean said. “So if we can pull into a port that has cleaner shore-power capabilities we want to plug in so we don’t use any fuel.”

The problem is that most ports don’t supply shore power: Only 2 percent of the world’s ports currently offer it for cruise ships, according to CLIA. Royal Caribbean says it is working with ports and other cruise lines to further its use.

Converting waste to energy onboard

Expanding its 30-year “Save the Waves” program , which aims to help keep trash out of landfills and the ocean, Royal Caribbean has built what it says is a first-of-its-kind waste management system on board Icon of the Seas that converts waste into energy.

The microwave-assisted pyrolysis technology, known as MAP, takes food, biowaste and cardboard waste and turns it into small pellets. The pellets are then heated up to produce a gas that is converted into steam energy that Royal Caribbean said would be used to power the ship’s water park. The system also produces biochar, which has the potential to be used as a fertilizer.

The company said it will have a better understanding of the system’s output while the ship is in full operation in the coming months, but so far it takes around 25 kilowatts of electricity to operate the system with an output of 200 kilowatts.

“It won’t take much energy to run the system,” said Mr. Comer, of I.C.C.T , but, he added, “It won’t produce much energy for the ship, either.”

Advanced water treatment

Icon of the Seas is equipped with an advanced purification system that is designed to treat all wastewater onboard, from toilets and showers to kitchen galleys. More than 93 percent of the ship’s fresh water will be produced on board through a system of reverse osmosis, which removes contaminants from water, the cruise line said.

Ms. Keever of Friends of the Earth said Royal Caribbean deserves credit for the treatment systems. “They’re installing the most expensive and best sewage treatment technology on their ships, and it’s important because they are the biggest cruise line and are showing the industry that they can do it, pay for it and they should,” she said.

In its 2023 promotional video series , “Making an Icon,” Royal Caribbean said Icon of the Seas would be its “first ship with fuel cell technology,” which would be used to power parts of the ship like the air conditioning and elevators.

But it won’t happen yet.

Fuel cells combine hydrogen and oxygen to make electricity without combustion and their byproduct is water, meaning that they do not emit as many greenhouse gases as traditional fossil fuels. While Icon of the Seas has been built to accommodate fuel cells, the batteries have not yet been installed, according to Bloom Energy, the fuel cell manufacturer working with Royal Caribbean. Because of the size and scope of the project, Bloom Energy said it encountered issues with external suppliers.

Bloom Energy is now focused on solving the issues for larger fuel systems that are being planned for Royal Caribbean’s 5,668-passenger Utopia of the Seas, which is scheduled to enter service next year. Suminder Singh, the vice president of marine at Bloom Energy said the next opportunity to equip Icon of the Seas with the cells may not be for another five years, when the ship is scheduled to go into dry dock. Royal Caribbean says it may not take that long and the decision will depend on the success of the technology on Utopia.

Mr. Comer of I.C.C.T. said that while fuel cells would be a great option, they have similar life-cycle emissions as conventional oil-based fuels if they are made on land using natural gas. “We need hydrogen made from renewable electricity,” he said. “And if we have that and use it in fuel cells, then you would basically have zero-life cycle greenhouse gas emissions.”

Follow New York Times Travel on Instagram and sign up for our weekly Travel Dispatch newsletter to get expert tips on traveling smarter and inspiration for your next vacation. Dreaming up a future getaway or just armchair traveling? Check out our 52 Places to Go in 2024.

Ceylan Yeginsu is a travel reporter for The Times who frequently writes about the cruise industry and Europe, where she is based. More about Ceylan Yeginsu

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How the cruise industry is pivoting to sustainability

Cruise ships are notoriously bad for the environment, but this might be changing

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The cruise industry is back and booming. By the end of 2023, an estimated 31.5 million passengers will travel on a cruise ship, according to Statista , and that figure exceeds even pre-pandemic numbers. The sector is expected to keep growing exponentially, with Statista estimating nearly 40 million annual cruisers by 2027.

With this uptick, though, comes renewed questions about the cruise industry's negative effect on the environment. Cruise ships are "an environmental disaster," Popular Science reported, with the behemoth ships "having a massive effect on the climate." One study from the University of Exeter showed that the average cruise ship produces the same amount of carbon emissions as 12,000 cars.

While other transportation sectors, like air travel , are working to become more eco-friendly, cruise ships have long been the bane of environmentalists. Groups like Friends of the Earth claim that "everything that cruise ships come in contact with are likely to be harmed along their journey." However, the industry has begun working on alternatives to their fuel-guzzling vessels, and is exploring ways to make voyages by ship both enjoyable and green.

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How bad are cruise ships for the environment?

Traditional diesel-powered cruise ships pump out massive quantities of toxic emissions, experts say. While the entire shipping industry emits "2.9% of global carbon dioxide emissions," cruise ships "produce more carbon dioxide annually on average than any other kind of ship due to their air conditioning, heated pools and other hotel amenities," The Associated Press reported, citing a study from the European Federation for Transport and Environment.

Then there are the passengers themselves. A person's carbon footprint " triples in size when taking a cruise," Forbes said, and "the emissions produced can contribute to serious health issues." The scale of cruise ships causes a tremendous amount of garbage to accumulate onboard, and "cruise ships have been caught discarding trash, fuel, and sewage directly into the ocean," Forbes added.

Many resort towns that welcome cruise ships have been directly affected by pollution from the vessels, and there has been a purported rise in medical problems in some of these areas. In the French city of Marseille, for instance, shipping pollution "is estimated to account for up to 10% of the city's air pollution problem," The Guardian reported. One man who lives above the ship-docking area in Marseille has "noticed that the cancer cases here began emerging in the years after the cruise ship boom, as the ships got bigger and more arrived," he told The Guardian.

How are cruise lines reacting?

Many companies within the industry are attempting to pivot to sustainability, and a variety of greener options have been proposed. Nearly every cruise line "is investing in green initiatives, from looking at carbon footprint to refining emissions," Colleen McDaniel, editor-in-chief of Cruise Critic, told CNN .

One of the key aspects of the shift is an attempted move toward alternative fuel sources. Industry trade group Cruise Lines International Association (CLIA) has committed to net-zero carbon emissions by 2050. Two main alternates are battery and hydrogen-powered ships. Despite the well-publicized danger of hydrogen vehicles, "more than 15% of cruise ships debuting in the next five years" will be equipped with hydrogen fuel cells or battery incorporations, CLIA said, with Stanford University professor Marc Jacobsen telling CNN they are "far cleaner solutions" for ships.

Norwegian cruise line Hurtigruten has said it will no longer build fossil fuel-based ships, and is attempting to craft the world's first zero-emission liner. The ship will operate on batteries that "would allow it to run for well over 300 miles before recharging," Time reported. To maximize the ship's range before charging, Hurtigruten "is exploring using underwater maneuvering jets that can retract into the hull to cut drag," and will potentially be "adding sails and solar panels to harness extra power." The company told Time will have a final design for the ship by 2025, with plans to have it water-ready by 2030.

Other initiatives include onboard changes, and "most lines have reduced or eliminated single-use plastics aboard," Travel + Leisure noted. "Waste heat recovery systems are allowing ships like those in the Disney Cruise Line fleet to reduce water usage," the outlet added, and "many cruise lines are also making investments in big-picture sustainability efforts."

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 Justin Klawans has worked as a staff writer at The Week since 2022. He began his career covering local news before joining Newsweek as a breaking news reporter, where he wrote about politics, national and global affairs, business, crime, sports, film, television and other Hollywood news. Justin has also freelanced for outlets including Collider and United Press International.  

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• Environmental Technologies and Practices CLIA Global Oceangoing Cruise Lines - August 2023

Environmental Technologies and Practices

CLIA Global Oceangoing Cruise Lines - August 2023

On 6 September 2023, Cruise Lines International Association (CLIA), the leading voice of the global cruise industry, today released its 2023 Global Cruise Industry Environmental Technologies and Practices Report, showing concrete progress by the sector in advancing its environmental and sustainability agenda.

The 2023 order book data shows that cruise lines continue investment in new vessels with 44 new ships on order during the next five years, representing an investment of $62 billion since 2019. Of these new ships, 25 will be LNG- powered and seven will be either methanol ready on delivery, or methanol capable, representing an investment in new engine technologies that will accelerate the maritime transition towards a future of low to zero carbon fuels.

Examples of progress cited include the number of alternative fuels pilot programs and trials currently in place with cruise ships. In addition, an increasing number of vessels sailing and launching over the next five years will either use alternative fuels or will be able to incorporate zero carbon fuels when they become available. The 2023 report also demonstrates other significant investments cruise lines are making to reduce emissions at berth and at sea, such as shoreside electricity, which allows cruise ships to switch off engines for significant emissions reduction while in port.

More cruise lines are diversifying energy solutions by incorporating multi-fuel engines, trialing fuel cell technology, wind (including solid sail) technology, as well as photovoltaic solutions and battery storage for power shaving.

Efficiency tracking systems are now in use on 171 CLIA-member ships, representing 60% of the global fleet, with many more systems planned.

In addition, cruise lines are pursuing fuel flexibility, investing today in propulsion technologies with conversion capabilities for the future—with 32 pilot projects and collaborative initiatives underway with sustainable fuel producers and engine companies.

President, and CEO, CLIA, Kelly Craighead said: “Cruise lines continue to transform the modern fleet to protect the oceans, air and destinations enjoyed by millions of passengers each year. Our data shows a step change in the uptake of new environmental technologies by our cruise line members. Already today cruise lines are building the ships of the future which will run on new, more sustainable engine technologies. The introduction of these new technologies and the many pilot programs and trials in place reveal how the cruise industry is an innovator and early adopter of technologies that are helping us sail to a more sustainable future.”

The availability of sustainable marine fuels remains essential to achieving the maritime industry’s decarbonisation goals and underscores the need for governments to support research efforts to accelerate development of these fuels so that they are safe, viable and available for use.

This table provides aggregated data across CLIA’s global oceangoing cruise line membership. The table reflects the number of ships equipped with certain technologies, corresponding passenger capacities (lower berth at double occupancy) and the percentage of the entire fleet represented.

AUGUST 2023

Cruise industry alternative fuels and energy sources - may 2023.

• The information herein reflects input from CLIA Members representing more than 90% of the industry by capacity.
• This data set is just a snapshot in time; planning for the uptake of alternative fuels and energy sources is continually evolving and constantly reassessed considering a rapidly changing landscape. Ships may be designed to carry and use one or more specific fuel types listed; however, the future fuel pathways to which such ships might transition are not accounted for (e.g., potential future transition of an LNG ship to synthetic LNG or E-LNG).
• The uptake of alternative fuels and energy sources remains critical to the cruise industry's pursuit of net-zero carbon cruising by 2050. The cruise sector is part of a broader maritime industry that must compete for safe and compliant alternative fuels and energy sources to meet existing commitments and regulatory requirements that are under development. While demand is high, availability is uncertain; the uncertainty increases for forecasts that are further into the future.
• Additional innovations, including shoreside electricity (SSE) capability and other sustainability data, are available in CLIA's annual Environmental Technologies and Practices Inventory data.

i Methanol (CH 3 OH) is a clear, colorless liquid that is soluble in water and is composed of carbon, hydrogen, and oxygen. Liquid methanol can be toxic to humans. It is most commonly produced on a commercial scale from natural gas, but it can also be produced from renewable sources such as biomass, or by means of electrolysis powered by renewable power and supported with carbon capture technology.

ii Biofuels are liquid fuels produced from biomass. Biomass means the biodegradable fraction of products, waste, and residues from biological origin from agriculture, including plants, vegetables, and animal substances, from forestry and related industries, including fisheries and aquaculture, as well as the biodegradable fraction of waste, including industrial and municipal waste of biological origin. Biofuels are widely recognized as a necessary component of the decarbonization pathway for the cruise sector and the broader maritime industry. Cruise operators remain focused on biofuels which are sustainably produced or processed using renewable resources. In this context, the criteria in the European Renewable Energy Directive (RED) provides a helpful starting point for what is allowable for use while cruise lines also recognize that guidance on global lifecycle assessment of marine fuels and emissions factors will be particularly relevant and remain under development at the IMO.

iii Feedstocks can be 1 st generation (edible oil—sunflower, palm, corn, rapeseed, and soybean), 2 nd generation (non-edible oil—Jatropha and castor bean, plant waste biomass, and animal fat), and 3 rd generation (microalgae).

iv Synthetic fuel is a generic term applied to any manufactured fuel with the approximate composition and comparable specific energy of a natural fuel. It is primarily used to refer to carbon-based liquid or gaseous fuels manufactured, via chemical conversion processes, from a carbon source such as coal, carbon dioxide (CO 2 ), natural gas, biogas, or biomass. This includes using established conventional fossil-based processes. Electrofuels (eFuels) are advanced gaseous and liquid fuels normally produced from hydrogen and often captured carbon dioxide (CO 2 ) and which use sustainable electricity as the principal power source for the generation of the fuel. The “e” refers to the method of production of the fuel.

v Green fuels are those where the production employs electrolysis—the separation of hydrogen and oxygen molecules by applying electrical energy to water. To be a green fuel, renewable sources such as wind and solar power are used to generate the electricity for the separation process. When applied to fuels such as methanol, it normally means that the hydrogen is produced in this way and the carbon dioxide (CO 2 ) used has been captured from the air.

vi LNG Fuel Cells include Sulfur Oxide (SOFC) or Proton Exchange Membrane (PEM) systems; some applications include an LNG SOFC demonstrator for electricity production from LNG.

AUGUST 2022

August 2021, august 2020, august 2019, august 2018.

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Can cruising be green? These eco operators are starting to make waves

​Adventure cruise operators are taking active measures to ensure a more sustainable future — from hybrid batteries that reduce CO2 emissions to working with organisations to alleviate passenger impact.

In late January of 1966, a Swedish-American travel agent called Lars-Eric Lindblad led a group of 52 paying guests aboard Lapataia, an Argentinian naval ship that he chartered for a voyage to Antarctica. On that ship — and from 1969 on the much plusher, purpose-built Lindblad Explorer — passengers wore bow-ties as they dined on lobster while breaking ice on the continent known as the White Desert.   Antarctica had, until then, been the preserve of scientists, polar explorers and penguins. In adding it to the map for wealthy tourists, Lindblad was a good half century ahead of his time. The cruise industry would grow to such a huge extent, that ships are now capable of carrying up to 7,000 passengers. But the ‘expedition’ or ‘adventure’ cruise that he pioneered has only recently built up a head of steam. Some of the biggest cruise lines are today competing with specialists to court growing demand for experiences that take the comforts of classic itineraries to more remote seas, on smaller ships. “Antarctica is still the number one destination,” says Edwina Lonsdale, an industry veteran and managing director of   Mundy Cruising in London, which started selling cruises in 1970. In 2012, Lonsdale launched the spin-off   Mundy Adventures , the UK’s first adventure cruise agency. “But it’s just over the past three or four years that we’ve seen this huge build programme,” she adds. Even among the handful of high-end adventure lines Mundy works with, berth numbers have almost doubled from a pre-pandemic high of more than 18,000 to a projected 30,000 by 2025. “It’s extraordinary,” Lonsdale says. With such growth comes a new dimension to the vexed question of sustainability. Adventure cruises offer access to stunning but often imperilled regions (Londsale says the Galápagos and the Arctic are the next most in-demand destinations). They often require more and longer flights to get to and from the ships. And, per passenger, the impact of smaller ships can be worse than the giant liners that ply the Mediterranean and Caribbean. Yet demand for new ships is also giving cruise lines an opportunity to research and build more sustainable vessels and practices — and market their sustainability claims in a more environmentally conscious world. “There’s this disconnect between conservation and cruising, but when you dig deeper, the cruise industry is developing technologies in a much more focused way, and with higher investment, than, for example, building hotels on the Galápagos Islands,” Londsdale says. While the pandemic was a disaster for the cruise industry, Londsdale says it boosted demand among older would-be cruisers, in particular for bucket-list adventure experiences — despite prices that tend to be about double those of bigger cruise ships of comparable quality and comfort. According to   Cruise Lines International Association   (CLIA), the largest cruise industry trade association, nine of the 16 ships its members were expected to launch in 2022 were classed as expedition ships. In December 2021, new Norwegian cruise line, Havila Voyages , launched the first of four ships that are at the front of this new wave. The Havila Capella now sails the classic Bergen to Kirkenes route up and down the west coast of Norway, well into the Arctic Circle. It looks like a typical ship but rather than relying on highly polluting marine fuel, or relatively cleaner diesel, the Capella is a hybrid. An 86-ton battery pack — purportedly the largest found on any passenger ship — gives it the electric capacity of more than 600 top-range Teslas. The batteries, which are designed to be recharged from the grid while Capella is in port, ideally via renewable energy, mean the ship can sail almost silently for up to four hours. The vessel otherwise runs on liquid nitrogen gas (LNG). Havila claims its hybrid system cuts NOx emissions by around 90% overall, and CO2 emissions by around 40% compared to comparable ships running on heavy fuel.  

“The fact that we can run for four hours on a battery is revolutionary,” says Sandra Ness, Havila’s head of climate, environment and expeditions. Havila is not alone in going down the hybrid-LNG route. Its local rival Hurtigruten is building or converting several ships that use the technology, while in 2021 the French cruise line Ponant took delivery of its sparkling new Le Commandant Charcot, a 123-cabin ship also powered by batteries and LNG. The polar class ship sails to the geographic North Pole, Greenland, the Svalbard archipelago, the Bellingshausen Sea and the Larsen Ice Shelf. Five of its 16 ships that launched in 2022 ran on LNG, according to CLIA.  

Going greener

Adventure cruise lines are increasingly also burnishing their green credentials beyond the engine room. Ponant’s new ship has hi-tech stabilisers that mean it no longer needs to damage the seafloor with heavy anchors. New hulls are designed to slip through water with less drag, improving fuel economy. “We use the surplus heat from the LNG to heat up our rooms and water,” Ness says. Havila’s smaller ships make it easy to bin the traditional cruise buffet, reducing food waste, while the more sustainable cruise lines have programmes to reduce plastics use. When you’re sailing the relative minnows of the cruise ecosystem, advantages of scale also extend to shore, where the biggest ships have sparked fraught debates about overtourism in destinations such as Venice. There are also increasingly strict rules in more remote destinations. In the Galápagos, for example, no ship may carry more than 100 passengers; while in Antarctica vessels with more than 500 passengers can’t make landings.   But the more progressive lines go further. Ponant ’s ships have a capacity range of 32 to 350 passengers. “But even if we’re 200 people going to a remote area, we have to inspect and preview the limits of our activity,” says Wassim Daoud, head of sustainability and corporate social responsibility at Ponant, which in 2018 announced an ongoing partnership with National Geographic Expeditions .   Before Ponant added an itinerary that took in the Bissagos Islands off the Atlantic coast of Guinea-Bissau in West Africa, Daoud says the company sent a team of scientists, social experts and naturalist guides to meet local authorities and charitable organisations. Together they established sympathetic systems for docking and disembarkation, while also assessing the possible wider impacts of passengers. The company is also funding a school on the islands, with two members of Ponant staff based there to manage the project. “We try to not only be in connection with the local population when we’re there, but also when we aren’t,” adds Daoud, who says the programme continued while the pandemic took the islands off its destination list. Beyond the restrictions put in place by destinations, it would be easy to imagine that increasingly eco-aware consumers are driving this change. Lonsdale thinks it’s not as simple as that. “I’ve very rarely had a customer who asks, for example, ‘What’s the carbon footprint of that ship’,” she says. “When people have it in their heads they want to go on a cruise, they just want to go.” But, she adds: “I do think the fact that the expedition cruise operators are grabbing hold of this and leading the way is important to the consumer and it’s become a marketing tool.”

Fuelling the future

But is it enough? While a lot of the noise and apparent progress is coming from the adventure cruise sector, environmental groups say the smaller size of boats remains a problem. “Even if you have a ship that you could call ‘clean’, it’s still running on fossil fuels and per person it’s terrible,” says Sönke Diesener, Transport Policy Officer at Nabu (Nature and Biodiversity Conservation Union), a German non-governmental organisation   that’s one of Europe’s biggest environmental associations. Diesener estimates that per-person emissions on smaller adventure cruise ships can be up to three times as high as those of the giants. In just a few days, he says passengers in the Antarctic can easily exceed the annual emissions targets each of us would need to hit if, as nations, we’re going to control global heating. And that’s before we consider the additional impact of flying long distances to and from remote ports. “I recently met the person responsible for sustainability at a luxury adventure cruise company about all the pledges they were making,” Diesener says. “Then the guy tells me that many of their customers use private jets to get to the ships. If you do that, it doesn’t matter what fuel your ship uses — you’ve already ruined your personal CO2 footprint.” While a positive shift, the move to LNG is far from perfect. “It’s still a fossil fuel — it’s methane,” Diesener says. And while emissions are lower, a proportion of gas not burnt in a ship’s engine slips into the atmosphere. Over a 20-year period, methane is 80 times more potent at warming than carbon dioxide, according to the UN.   Yet even Diesener welcomes the momentum being created by adventure cruise lines, many of which see LNG as a stepping stone. “This is only the start of our journey,” says Ness at Havila. The cruise line soon plans to use a liquid biogas that Ness says would reduce CO2 emissions by about 90%. Ships are already in development that will use hydrogen or methanol as fuel sources, allowing Ponant ambitiously to target a date of 2028 for emissions-free sailing. “I think we’re very close to a tipping point where the first zero emissions cruises are available,” Diesener says. The challenge then will be to retrofit existing ships, he adds. Nabu has demanded that the whole cruise industry should be climate-neutral by 2040. What’s not in doubt is the rewards that await for tourists who have the time and money to embark on adventure cruises. Lonsdale, who’s been on more than most, recalls an early morning wake-up call on a luxury liner in Svalbard, way north of Norway. The captain had spotted a polar bear and her cub. From a safe distance on the ship’s rigid inflatable boats, passengers watched the animals cross the ice to the water’s edge. “It was a beautiful morning with glorious sunshine and for about two hours we watched this bear and her cub leaping in the snow behind her,” Londsdale recalls. “It was just the most extraordinary experience.” All the industry figures I speak to say that it’s the chance to witness species and regions under threat, backed up with the expertise of the onboard naturalists and guest speakers increasingly demanded by adventure cruise passengers, which justifies the endeavour. In this regard, Lars-Eric Lindblad, who died in 1994, 15 years after his son launched the still thriving Lindblad Expeditions cruise line, was also ahead of his time. In an age before mass tourism, before the first international climate agreements — and long before David Attenborough’s Blue Planet — Lindblad saw his cruises as a way to inspire people to care about the environment. As he’s reported to have put it himself, back in the 1960s: “You can’t protect what you can’t see”.  

Published in the Cruise 2023 guide, distributed with the Jan/Feb 2023 issue of   National Geographic Traveller (UK)

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CLIA Releases New Environmental Data Report for Cruise Industry

By: Author Carrie Ann Karstunen

Posted on September 9, 2023

A new environmental data report from Cruise Lines International Association confirms progress in the cruise industry’s uptake of new environmental technologies.

Cruise Lines International Association ( CLIA ) has released its 2023 Global Cruise Industry Environmental Technologies and Practices Report , demonstrating the sector’s tangible progress in advancing its environmental and sustainability objectives.

The data shows investment in technologies and alternative fuels that will accelerate the cruise industry’s transition towards net zero.

2023’s order book data shows that cruise lines are continuing to invest in new vessels with 44 new ships on order during the next five years, representing an investment of $62 billion since 2019.

Twenty-five of the new ships will be liquified natural gas (LNG) powered, and 7 will be either methanol ready-on-delivery, or methanol capable—an investment in innovative engine technology that is driving the maritime transition to a future powered by low- to zero-carbon fuels.

During the next five years, an increasing number of cruise ships sailing and launching will either use alternative fuels or will be able to include zero-carbon fuels when they become available.

Shoreside electricity will reduce carbon emissions in port

The 2023 study also shows other substantial investments cruise lines are making to cut emissions at berth and at sea—including shoreside electricity (SSE), which allows cruise ships to switch off engines in port, resulting in significant carbon reductions.

Related: Cunard Enables Shore Power Capability Across the Fleet

Plugging into SSE can reduce emissions by up to 98% while a ship is in port, according to studies conducted by a number of the world’s ports and the U.S. Environmental Protection Agency.

Cruise lines diversifying energy options

According to a CLIA press release, more cruise lines are diversifying their energy options by combining multi-fuel engines, experimenting with fuel cell technology, wind (including solid sail) technology, solar solutions, and battery storage for power shaving.

Sixty percent of CLIA-member ships—171 in total—currently use efficiency tracking systems, with many more systems planned for the future.

CLIA reports that cruise lines are pursuing fuel flexibility, investing today in propulsion systems with conversion possibilities for the future. Currently, 32 pilot projects and collaborative activities are underway with sustainable fuel providers and engine companies.

“Cruise lines continue to transform the modern fleet to protect the oceans, air, and destinations enjoyed by millions of passengers each year. Our data shows a step change in the uptake of new environmental technologies by our cruise line members,” said Kelly Craighead , CLIA’s President and CEO.

“Already today cruise lines are building the ships of the future which will run on new, more sustainable engine technologies. The introduction of these new technologies and the many pilot programs and trials in place reveal how the cruise industry is an innovator and early adopter of technologies that are helping us sail to a more sustainable future,” Craighead continued.

Related: Holland America Pilots Renewable Fuels on MS Rotterdam

CLIA says cruise sustainability will need public and private investment

The availability of sustainable marine fuels is critical to reaching the maritime industry’s decarbonization targets, underscoring the importance of governments supporting research efforts to accelerate the development of these fuels so that they are safe, viable, and ready for use.

CLIA Chairman Pierfrancesco Vago said in a press release, “Achieving our collective sustainability ambitions requires substantial investment from the public and private sector. The cruise industry, as part of the broader maritime sector, is doing its part by building the future of cruise into our ships today. We need governments to support research efforts, as well as provide a clear and stable regulatory landscape, so that fuel suppliers and others can do the critical work needed.”

The report highlights how member cruise lines and ports are reducing emissions

The new report’s data shows that CLIA’s ocean-going cruise lines are continuing their work to reduce emissions. Progress highlights include:

• Across the CLIA member fleet, 120 ships (46% of the total and a 48% increase in the number of ships with SSE since 2022) are equipped to connect to shoreside electricity, with 86% of CLIA member ships (representing 95% of global passenger capacity) coming online between now and 2028 slated to include a shoreside electricity system.
• Currently, just 32 ports—representing fewer than 2% of the world’s ports—have at least one cruise berth with plug-in capability. This number is up compared to 2022’s 29 ports.
• By 2028, more than 210 ships with shoreside power capability are expected, plus additional ships to be retrofitted with the capability, representing a total of 72% of ships and 74% of global passenger capacity.
• In 2022, CLIA announced that its ocean cruise line members made a commitment that all ships calling at ports capable of providing SSE will be equipped to either use the technology by 2035 or use alternative low-carbon technologies, as available, to reduce emissions in port.
• By 2030, as part of the EU’s Fit for 55 green program, major ports in Europe will be required to have shoreside power, further accelerating the available port infrastructure investment in that region.
• As part of their overarching sustainability focus, cruise lines have committed to not discharging untreated sewage anywhere in the world, during normal operations.

Related: Carnival Corporation Unveils New Solar Park at Amber Cove

More cruise ships feature advanced wastewater systems in 2023

Across the CLIA member fleet, 202 ships (77% of the total), representing 80% of global passenger capacity (a 12% increase from 2022) are now equipped with advanced wastewater treatment systems. These systems operate to a higher standard than shoreside treatment plants in many coastal cities.

All CLIA new build ships are specified for advanced wastewater treatment systems which will bring the total to 242 ships, representing 80% of the fleet and 84% of global capacity.

Since 2019, the number of ships with advanced wastewater treatment systems capable of meeting the more stringent standards of the Baltic Sea Special Area has increased by 167%. Today, nearly a third of CLIA member ships have this capability.

Many new build ships will use renewable fuels

Several CLIA member lines are using or testing the ability to run on renewable fuels, such as biofuels and synthetic carbon fuels, on new build ships.

Four CLIA ships sailing today use renewable biofuel as an energy source, and an additional four new ships are expected to be configured for renewable biofuels. In addition, 24 ships are in biofuel trials and two have synthetic carbon fuels trials.

Seven new-build ships are planned to run on zero-carbon fuels, including five ships that will use green methanol and two envisioned to use green hydrogen.

In the next five years, 15% of new build cruise ships entering service are anticipated to be equipped with battery storage and/or fuel cells to allow for hybrid power generation.

Several cruise ships are using liquefied natural gas (LNG) as the cruise industry prepares for a future powered by sustainable, renewable energy sources. Ships built with LNG engines and fuel supply systems can switch to bio or synthetic LNG in the future with minimal or no modifications.

CLIA’s 2023 report has identified that 48% of new-build capacity will be designed with LNG engines and fuel supply systems. These ships are part of a future generation of vessels that will be capable of running on renewable marine fuels once fuel providers are able to make them available at scale.

Based on analyses by SeaLNG and others, LNG is the fossil fuel currently available at scale that has the best performance in reducing atmospheric emissions. LNG has virtually zero sulfur emissions and particulate emissions, reduces NOx emissions by approximately 85%, and achieves up to a 20% reduction in greenhouse gas emissions.

To view the data tables for this year’s report, visit CLIA’s 2023 Global Cruise Industry Environmental Technologies and Practices Report .

About the Cruise Lines International Association (CLIA)

CLIA is the world’s largest cruise industry trade association. On behalf of its members, affiliates, and partners, the organization supports policies and practices that foster a secure, healthy, and sustainable cruise ship environment.

The CLIA community includes ocean, river, and specialty cruise lines; a widespread network of stakeholders, including ports and destinations, ship development, suppliers, and business services; and certified travel agent members. The organization’s global headquarters are in Washington, DC, with regional offices located in North and South America, Europe, and Australasia.

This year, CLIA forecasts that the number of cruise ship passengers will reach 31.5 million, surpassing 2019 levels.

More news from the world of cruising

What are your thoughts about CLIA’s 2023 Global Cruise Industry Environmental Technologies and Practices Report? Is the cruise industry moving quickly enough toward sustainable cruising? I’d love to hear your thoughts in the comments below!

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Cruise Lines & Sustainability: Updates from the Global Cruise Industry

A nuclear powered "battery" ship is one of the cruise industry's more futuristic sustainability innovations on the horizon. Rendering: Ulstein

With COVID-19 slowly fading in the rear view mirror – at least from the perspective of the impact on the cruise industry – cruise lines made a concerted effort to focus on more positive messaging at last month’s Seatrade Cruise Global conference. In particular, the industry moved the spotlight firmly onto sustainability, announcing a global commitment to net zero emissions by 2050.

“We haven’t taken our eyes off the long-term target to be truly sustainable,” Pierfrancesco Vago told Seatrade attendees. Vago is the executive chairman, cruise division at MSC Group, and is currently serving as global chair of Cruise Lines International Association (CLIA). “Our industry’s resolve to be a leader in sustainability never changed during the pandemic.”

In addition to its commitment to pursue net carbon emission cruising by 2050, all ocean-going CLIA members have agreed that, by 2035, all ships calling at ports where shoreside electricity (SSE) is available will be equipped to use it, allowing engines to be switched off while docked at port.

Currently, 32% of the global cruise fleet is fitted to operate on shore power (where available). By 2027, the percentage will more than double, with 66% of the global cruise fleet equipped for shoreside power.

“In this way, we are acting now to reduce and eliminate emissions in port, which provides immediate benefits to local communities,” said Kelly Craighead, president and CEO of CLIA, during the Seatrade keynote session.

Other investments by the industry include lower-emission fuels, like Liquefied Natural Gas (LNG), which by 2027 will power more than half of the new capacity of the global cruise fleet, along with research into alternative energy sources like hybrid technologies, synthetic fuel, and fuel cells such as lithium ion battery storage.

Other sustainability-related investments by cruise lines, Craighead said, relate to reducing onboard waste and preventing over-tourism in oversaturated markets.

Within the cruise industry, CLIA isn’t alone in making sustainability-related announcements. Here are a few other highlights of sustainability innovations recently announced.

Royal Caribbean Commits to Net Zero Cruise Ship by 2035 Over the next 18 to 24 months, Royal Caribbean group, parent company of Royal Caribbean International, Celebrity Cruises, and Silversea Cruises, will develop a series of emission-related goals, all with the intent of delivering a net zero cruise ship by 2035.

The company’s focus on achieving measurable goals builds on its track record of designing and operating some of the most energy-efficient ships at sea. Using a variety of new technologies, each new ship added to the Royal Caribbean Group fleet is 20%to 25% more efficient than their predecessors.

The line intends to reach net zero emissions through a combination of energy-efficiencies, alternative fuel and power solutions, and optimized deployment and integration of strategic shore-based supply chains.

Carnival Corp Rolls out Food Waste Biodigesters Carnival Corp has completed the installation of nearly 600 food waste biodigesters across its global fleet in order to facilitate food waste management and reduction. The biodigesters were added to ships across the company’s nine cruise line brands, including Carnival Cruise Line, Princess, Holland America, Seabourn, and Cunard. CCL, for instance, has biodigesters on all of its ships.

The technology uses a natural aerobic digestion process inside each machine to efficiently break down food waste using a mixture of beneficial microorganisms, enabling the systems to process anything that can be consumed by a human. Able to function 24 hours a day,, the biodigesters have been strategically placed in key areas of the ship where food is processed, making it easier and more efficient for crew members to manage and control food waste. The machines can also weed out non-food items and other materials accidentally mixed with food waste, providing an additional layer of environmental protection.

The biodigesters are part of a corporate-wide initiative to reduce food waste by 50% by 2030. Other goals the company is working toward include sending 100% of waste to waste-to-energy facilities by 2050 and to partner with primary vendors to ensure near 100% reuse of packaging materials, also by 2050.

Sustainable Shore Excursions MSC Cruises has made changes to its summer shore excursions offerings as way of increasing its contributions to the cruise industry’s sustainability. Among the changes are more low-carbon tours in the Caribbean and Europe, including 150 bicycle tours in 21 countries; increased use of hybrid and electric buses to shuttle guests in Denmark, Finland, Norway, Spain and Sweden; and more “Protectours.”

Protectours will be available at 20 ports at the start of the 2022 summer season and will expand to up to 90 ports by the seasons’ end.  Up to 70% of these tours will have a low environmental impact thanks to an increase in the number of walking, hiking, bicycling, canoeing and kayaking options, with several tours set to make a direct contribution to the environment by helping the protection of habitats and species. One such tour gives cruisers the chance to plant trees on the Greek island of Rhodes, while another has participants learning about urban farming and beekeeping in Rotterdam.

Nuclear-Powered Zero Emission Expedition Ships? At last months’ Seatrade, ship design firm Ulstein revealed designs for a nuclear-powered zero-emission expedition cruise ship. Called the Ulstein SIF, the Ice Class 1C vessel would use next-generation batteries, which would be charged using a Thorium Molten Salt Reactor. The Thorium MSR – a type of nuclear reactor – would be located on a service ship (nicknamed Thor) that accompanied the expedition ship.

The SIF expedition ship would accommodate up to 80 passengers and 80 crew, offering silent, zero-emission expedition cruises to remote areas, including Arctic and Antarctic waters. The Thor service ship, which can double as a rescue ship should the need arise, would feature helicopter pads, firefighting equipment, rescue booms, workboats, autonomous surface vehicles and airborne drones, cranes, laboratories, and a lecture lounge.

Ulstein is best known for designing X-BOW expedition ships that you can find sailing for Lindblad Expeditions and Aurora Expeditions.

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Cruise Sustainability: Who Leads the Way to a Better Future in Travel?

Cruise sustainability is of the utmost importance in travel. Is it not just the responsibility of cruise lines but also its guests to be better friends to our environment, and stewards of the Earth when we travel?

We can all work together to build a better future for the planet and (believe it or not) the cruise industry helps lead the way.

Disclosure: There are affiliate links in this post, which means we may earn a small commission if you click the link and proceed with a purchase,  at no cost to you . We truly only recommend hotels, products, and services we personally use. As Amazon Associates, we earn from qualifying purchases.

Cruise Sustainability is Two-Fold

There are cruise companies that focus on sustainability when thinking of their ships' designs, their impact on the Earth's waterways, and their guest programming. In fact, you'd probably be hard-pressed to find one that doesn't focus on this in the 21st century. This is one piece of sustainable cruising.

The other is passengers. We can all do more to be eco-conscious travelers and guests of cruises.

What can guests do to make cruising more environmentally friendly?

Anyone who lives on the planet (and that's all of us) should want to take an active role in taking care of it. The onus isn't 100% on the cruise lines when these ships and experiences are created for the enjoyment of their passengers.

As such, travelers can be environmental advocates on board and at home.

Keeping sustainability in mind on cruise ships may mean that you don't ask for new towels every day because of the energy it takes to provide new ones and wash the old ones more often than necessary.

Bringing your own reusable water bottle or reusable straw helps cut down on waste. You can also support local economies in your cruise choices by booking through one of the cruise companies that are sustainability-focused. In fact, we mention some below.) Or book an itinerary that stops at a port that supports locals, like at native-Alaskan-owned Icy Strait Point .

Everything on the Earth is connected. If you recycle at home, for instance, you're likely helping reduce plastics from entering the ocean.

Something as simple as using Nespresso's recyclable coffee pods instead of Keurig's mostly non-recyclable coffee pods helps. (Nespresso even provides free bags to ship the pods back to them to properly recycle.) Or you can shut off the water when you brush your teeth to conserve it.

It's simple to invest in a reusable water bottle from home and stop purchasing bottled single-use plastic bottles in bulk. (We love our MiiR bottles that give back to the Earth when you make a purchase. Use code SOMETIMESHOME for a 15% discount.) These are only a few ideas of many to help save the planet from home .

There are many more ways to aid in sustainability when you sail.

What can cruise lines do to be more sustainable?

Sustainability initiatives for cruise lines are multi-tiered:

• Are the cruise ships fuel-efficient, with low emissions?
• Do they use the latest technology in their engines, propellers, and the like?
• Do they have recycle programs and proper waste-management onboard? How are they helping to reduce pollution?
• Are they eco-conscious when it comes to material items for guests? This can include anything from linens made from sustainable materials, produced in humane factories, to locally made bath products in cabins.
• Do they care about the environment (including all its creatures) in the ports they visit and their local economy?
• Are their excursion options environmentally responsible?
• Do they have a sustainable food program on board or source local ingredients?
• Do they donate to charitable causes or foundations?

These are just some of the considerations that make a cruise sustainable or not. Many cruise lines also have sustainability statements , which is something to look for when considering booking a cruise. (Unfortunately, they're not always easy to find and not every cruise line has one.)

We go into detail about some of the cruise lines leading the way in cruise sustainability below.

Are cruises safe for the Earth?

The earth is our precious planet. Just as we only have one life to live, we only have one planet and we need to protect it.

Sustainability is always at the forefront of our minds as we live each day whether or home or while we travel. We are always asking ourselves, “How can we reduce, reuse and recycle?” And when we write about cruises this concept and question remain of the utmost importance.

Can an eco-conscious traveler love cruising and find eco-friendly cruise lines? The answer is yes.

Why it's Important for Cruise Ships to Sail our Oceans, Rivers, and Lakes

People often cannot grasp the importance of a destination, or concept, until they have experienced it themselves.

On a simple level, one cannot understand the majesty of a giraffe, for example, until he or she has seen one in person. And the truth is, most people will never have the privilege of traveling to Africa to see one. Yet, many people have seen a giraffe in person because they have visited an accredited zoo, such as the San Diego Zoo, or Animal Kingdom at Walt Disney World.

A real-life experience has given this person an appreciation for (and hopefully respect for) this animal. As such, people gain a greater understanding and respect for our oceans when they travel on them to remote places where cruise ships take passengers.

Real-World Experiences Help People Respect the Earth

Watching an educational television program is one thing. But a human connection and bond is solidified and taken to new heights when people experience something for themselves, in person.

An example is traveling to the Galapagos Islands. Cruise ships take passengers to the Galapagos, where they learn about Blue-Footed Booby birds, or Galapagos Land Iguanas. Their firsthand experience gives them a love and passion for this wildlife. In turn, they are more inclined to protect it.

Perhaps these people simply tell their friends about it, then their friends are intrigued to learn more. As a result, those friends travel to the Galapagos Islands and are inspired to donate money to help protect the Galapagos Marine Reserve after their experience. Perhaps this family traveled with their college-aged student who changes her major to Marine Biology after her trip, in hopes of getting a job when she graduates working in marine conservation.

None of that would have happened if cruise ships didn't carry passengers to these magnificent regions of the Earth. How else would the average person be able to reach a location such as the Galapagos Islands?

Be a Part of the Change

Therefore, the answer isn't stopping cruise ship travel, just like we won't stop air travel because plane emissions are bad for the environment.

Instead, we need to be a part of positive change in cruise sustainability. Responsible travelers can seek out responsible cruise lines doing good for the Earth and book them over a cruise line that isn't focused on sustainability. (Money talks.)

Cruise Lines have a Bad Environmental Reputation

We are shedding light on wonderful small cruise options that are trailblazers in cruise sustainability.

Cruises may have a bad reputation but let us, for a moment, compare them to other modes of transportation with emissions, like airplanes and cars. Whereas the automobile industry has made strides to move towards electric power, for example, so has the cruise industry. Heck, even the boating industry should be examined more than the cruise industry. Many boaters simply throw waste overboard, shameful as it may be.

Several cruise lines are paving the way for sustainability and have a more neutral environmental impact than ever before.

Impact of Mega Cruise Ships and Small Cruises on Environmental Change

We'd be remiss not to touch on the difference between large ships and small ones.

We primarily prefer small ships like river cruises , yacht cruises , and expedition cruises , which usually tend to have a smaller environmental footprint due to the number of passengers on board (crew and guests) and size of the vessel. Thus, they produce less waste.

While some smaller cruise lines have pioneered what it means to cruise a sustainable vessel with sustainable programming (such as Maple Leaf Adventures, who has always had sustainability as a guiding light in their company values), large cruise lines have followed suit.

We were thrilled to learn that Royal Caribbean has a Chief ESG Officer (Environmental, Social, and Governance), helping to keep cruise sustainability at the helm of the company's initiatives. MSC even has a Director of Sustainability.

What does cruise sustainability mean?

To us, sustainability is a verb. It is conservation in action. It can manifest itself in a myriad of ways, from responsible tourism and caring for ports cruise lines travel to, to passenger education about the environment onboard and off, to donating to good causes and programs.

Hurtigruten Expeditions: Battery-Hybrid Powered Cruise Ship

Hurtigruten uses the UN Sustainable Development Goals as its framework for sustainability. Back in 2012, incoming Hurtigruten Group CEO Daniel Skjeldam (who is CEO today) put an end to the use of heavy fuel oil in the Hurtigruten fleet. Aban on single-use plastic followed. A focus on sustainability continued to be a pillar of Hurtigruten cruises; they remain a leader in cruise sustainability.

Battery-Hybrid Powered Cruise Ships in the Hurtigruten Fleet

MS Roald Amundsen – a battery-hybrid-powered expedition cruise ship- was introduced by Hurtigruten in 2019. An identical expedition sister-ship called MS Fridtjof Nansen followed a year later. Its cutting-edge technology made it possible for a 20% reduction in the ship's fuel consumption and CO2 emissions. 

In the fall of 2021, MS Fridtjof Nansen was named the safest and most sustainable cruise ship in the world by Scope ESG Analysis, in partnership with Stern current affairs magazine. The accolade followed Scope's study of 400 cruise ships' safety and sustainability. The evaluation examined things like waste disposal, emission and water purification systems, and limitations on operations.

MS Fridtjof Nansen and MS Roald Amundsen are equipped with battery packs that enable electrical hybrid propulsion, shore power connection (which eliminates emissions in ports), and revolutionary green technology.

Hurtigruten introduced a third battery-hybrid ship in 2021: MS Otto Sverdrup.

These small expedition ships (with a capacity of between 500-530 guests depending on the destination) were designed to sail our planet's spectacular waters to reach destinations on many people's bucket lists, such as Antarctica, Alaska, the Arctic, and the Norwegian coast.

Hurtigruten Leads the Way in Sustainable Cruising

Hurtigruten's cruise ship fleet continues to grow. In addition to its battery-hybrid powered ships, they are focusing on upgrading ships that have been in operation for years.

Three of their Norwegian Coastal Express ships will receive battery pack upgrades beginning in 2022 with completion in 2023: MS Nordnorge, MS Nordkapp, and MS Polarlys. (MS Vesterålen was upgraded in 2019.) Certified biofuel will be used to further reduce CO2 emissions.

These upgrades will reduce NOx (nitric oxide) emissions by a whopping 80%, and CO2 (carbon dioxide) emissions by 25%. When that is done, Hurtigruten's seven coastal express ships will all have emissions equivalent to Tier III, which is the strictest international standard for NOx emissions.

In addition to this, as if it wasn't already a huge (yet important) undertaking to upgrade these ships, they will receive additional upgrades. This includes new propeller blades, hull optimization, a new bulbous bow, new gears, generators, and new control systems.

(For any engineering or ship-building nerds out there, Kongsberg Maritime will be working on the upgrades and is responsible for the design work. Myklebust Yard – a Norwegian shipyard – will do the upgrades of the first two ships.)

Additionally, Hurtigruten Svalbard launched a series of initiatives including partnering with Volvo Penta to run a hybrid day cruiser for guests in Norway.

More Good from Hurtigruten

Another thing we love about this cruise company is its Hurtigruten Foundation.

The foundation's three main goals guide their efforts:

• Preserving endangered wildlife.
• Battling plastic waste and marine litter.
• Supporting local and global projects in the areas where they operate.

As such, they donate resources (including money) to projects like the Galápagos Conservancy to save Petrels birds from extinction, the Association of Greenlandic Children to help build a better future, and South Georgia Heritage Trust to help save rare species of birds.

Aurora Expeditions: 100% Carbon Neutral

The founder of this Australian-based cruise company, Greg Mortimor, is an adventure-driven explorer with a passion for the environment. As such, the first ship was named after him.

Subsequently, the company has made a commitment to naming its ships after living people who have made a positive impact in science and in the environment. The second ship was named after legendary ocean conservationist, Dr. Syliva Earle. She's been quoted on the ocean countless times and her studies and work led to Time Magazine voting her as their first-ever “Hero of the Planet: in 1998.

She was also the first female chief scientist at the National Oceanic and Atmospheric Administration (NOAA) and led the first all-female aquanaut research team. Needless to say, she is certainly worthy of an Aurora Expeditions ship being named after her!

This cruise line even buys eco-friendly supplies for their head office in Australia, where cruise sustainability is a pillar of their focus as they look towards 2022 initiatives . This includes working on a sustainable food program and continuing on the path to being a Certified B Corporation.

Aurora Expeditions Ships

Aurora Expeditions does more for cruise sustainability than simply choosing thoughtful names for their ships. For instance, many of their itineraries will travel to Mission Blue spots. The main goal of Mission Blue is to regenerate oceans and their delicate ecosystems, which are vital to the oceans' health. In 2023, Dr. Sylvia Earle is leading guests on an Antarctic Climate Expedition aboard the 100% carbon neutral cruise ship named after her.

Guests will enjoy entertaining lectures from remote area specialists during every journey, which will expand their knowledge of where they are visiting. Passengers who want to dig deeper into science during their vacation can visit the onboard Citizen Science Centre.

Aurora Expeditions ships focus on low energy consumption, high fuel efficiency, and low vibrations in the water, which minimizes a ship's impact on sea life. Another really cool thing on their ships is a desalination plant, which converts seawater to freshwater.

Aurora Expeditions' “Travel for Good” video is very moving:

Maple Leaf Adventures: Pioneer in Cruise Sustainability

This Canadian-based small ship cruise company is truly a leader in sustainability, which was one of its founding principles. They always lead their trips with an eco-tourism foot forward, respecting nature and the environment.

Maple Leaf Adventures has won countless awards, including Canada's Best Eco-Adventure Tours, Best Boutique Cruise Line, and Business of the Year from Greater Victoria.

The footprint of this small company remains at a minimum. They pay all applicable fees to access parks they visit and obtain permits as needed, and also work in collaboration with the First Nations of the area. Additionally, they donate to charitable causes that help the environment.

Small Company that Gives Big

When Maple Leaf Adventures donates money, they go beyond simply writing checks. Their team members also contribute their time and energy to various associations that are responsibly improving our impact on the planet, like the Wilderness Tourism Association. They are co-founders of the Commercial Bear Viewing Association and Gwaii Haanas Tour Operators Association. They're also are certified GOLD (top-level) by Green Tourism Canada.

They were the first cruise line to be a part of 1% for the Planet , a collection of businesses, individuals, and organization that helps combat environmental issues. (Stasher Bags, our favorite alternative to Ziploc bags and other single-use plastic bags, that have many uses on a cruise , also gives to 1% for the Planet.)

Check out Maple Leaf Adventures' video, pledging to donate $100,000 to the conservation of the Great Bear Rainforest over 10 years:

Maple Leaf Adventures' Small and Sustainable Ships

They have three small ships for guests to choose from Maple Leaf (sailing ship), Swell (tugboat), and Cascadia (catamaran). They accommodate 8, 12, and 24 guests, respectively. Maple Leaf and Swell were built in the early 1900s and Maple Leaf Aventures maintains them as Canadian artifacts, educating their guests and the public on their history.

Maple Leaf Adventures sails along the coast of Canada and Alaska, bringing guests into remote and stunning locations bigger ships simply can't reach. They do so while paying the utmost respect to the landscapes and organisms that live there, big and small.

This is the cruise line for you if you want to stay within North America, getting up close and personal with nature (while keeping a respectable distance from the wildlife, of course). You'll find their unique itineraries explore Canadian regions you've probably never heard of but whose beauty will blow your mind nonetheless.

Kontiki Expeditions: Responsibly Cruising the Ecuadorian Coast

This yacht cruise company is a newcomer to the cruise world. They sail in Ecuador, a country famous in part for the Galapagos Islands. However, they're doing things differently, starting with sailing the coast of this beautiful South American country's mainland. They believe actions – big and small – can positively impact and preserve our environment, and they actively participate in such. Including connecting their cruisers with a stay in a sustainable boutique hotel pre or post-cruise in Quito.

Sustainability is a defining value for Kontiki Expeditions. Environmental policies, gender equality, and fair wages are things they keep top of mind, along with serving Ecuadorian communities. They have partnered with Fundación Real Madrid in coastal Ecuador for years to help improve education and opportunities for children.

Furthermore, they are working with three local communities to help provide schools and education for adults. They assist in teaching managerial skills, connect them with businesses to sell handcrafted products, provide technical support, teach English so they can communicate with visitors, and guide them in entrepreneurship.

Kontiki Expeditions is on the path to becoming a Certified B Corporation by October 2022 and is proud to be a business doing good for the planet. They are also in the process of becoming certified for Green Project Management for cruise sustainability.

As members of the Mingas Por El Mar Foundation, they help clean up Ecuador's beaches and educate the community about the benefits of reducing, reusing, and recycling. They couple this with teaching people ways to minimize our environmental impact along the coast which in turn helps our oceans.

Sustainability On Board Konitiki Expeditions' Yachts

Kontiki Expeditions' yacht ships are low impact, accommodating only 18 passengers per sailing in nine cabins.

They thoughtfully place sustainable decor into each cabin. Handknitted PET silk rugs adorn the floors, created from recycled bottles. Sheets that are on their beds are created from certified sustainably sourced cotton. Even the snacks in guest cabins are organically sourced.

In common areas of their ships, they encourage refilling a reusable water bottle. If you don't travel with your own reusable straw, they have biodegradable straws onboard.

Kontiki Expeditions Excursions Educate and Connect

Their excursions bring guests up close and personal with locals and nature. For example, a stop to speak with and learn from local fishermen at Monpiche Reserve reveals how Ecuadorian people respect the mangroves and can responsibly farm local shellfish for sustainable “Ceviche de Concha” onboard.

Imagine meeting local craftspeople in Pacoche Wildlife Refuge, who show you how they create famous Toquilla hats from plant fibers. Such a tour supports keeping this historic craft alive, which has been added to UNESCO's Intangible Culture Heritage list.

We recommend booking an Ecuador Kontiki Expeditions cruise if you're interested in exploring South America by sea. Guests will enjoy their yacht cruise ships' way of exploration, an amazing crew-to-passenger ratio, and desire to support the local economy, including Ecuador's national parks and reserves.

Viking: Leader in Cruising Making Strides towards a Sustainable Future

Viking , a well-known name in cruising and industry leader, focuses on sustainability. In particular, they have a notable new ship making impressive advancements in this arena.

The Viking Octantis is an expedition ship with cruise sustainability as a main focus of its design. It will sail in the Arctic and Antarctic .

The ship features things passengers would never even dream of considering! And luckily, they don't have to as vacationing guests. Yet nonetheless, it's great for everyone (passengers and crew) to be aware of these things when choosing a cruise line to support.

Such things include:

• State-of-the-art multibeam sonar systems help the ships scan the seabed. This assists in better understanding the science of the places they visit.
• Whale-safe speeds, so the ship does not disrupt these incredible creatures.
• Renewing energy onboard, so not even the heat emitted from their engines goes wasted.
• Enhanced bow thrusters, stabilizers, and pods, which allow them to cut down on fuel consumption.
• Certified low noise emissions, so they do not disrupt the whales' ecosystem.

Mega-Ships Focus on Sustainability

We mention smaller ships in detail because we're small cruise focused at Sometimes Sailing. However, we cannot ignore the efforts of cruise industry giants, whose mere organizational size and budgets you cannot ignore, especially when it comes to cruise sustainability initiatives.

As such, we want to mention a few notable cruise lines and their research, donations, and systems that have helped cruise sustainability advance in considerable ways.

Celebrity Cruises: Healthy Oceans Benefit Everyone

Healthy oceans benefit their business, from guest enjoyment to places they can visit and beyond. But healthy oceans really benefit us all. When you sail with Celebrity Cruises , you may not realize the things onboard their ships that contribute to cruise sustainability and a healthier planet, but they're hidden in plain sight.

Some of these things include LED lights that last longer than halogen bulbs and give off less heat, energy-efficient appliances from coffee makers to ice makers, and energy-efficient windows that help air conditioning run more efficiently throughout their ships.

They have water-reduction technology installed everywhere from showerheads and cabin sinks to dishwashers and laundry machines. They have been free of plastic straws since 2019.

The outside of their ships is coated in silicone paint that is safe for the environment, which allows the boats to glide more smoothly. This reduces the amount of energy needed for a ship to sail. Their Solstice ships are outfitted with solar panels to help with renewable energy onboard.

They contribute to the World Wildlife Fund (WWF) in multiple ways, including select merchandise purchases onboard going towards the foundation to Celebrity Visa Signature cardholders being able to donate points toward WWF.

Norwegian Cruise Line: PortMiami Design

Norwegian Cruise Line's terminal at PortMiami , which opened in 2021, was the first to achieve Leadership in Energy and Environmental Design (LEED) Gold New Construction v4.0 certification.

NCL has a Sail & Sustain program that outlines its ESG goals. Five principles include:

• Reducing environmental impact (including increasing their sustainable sourcing, minimizing landfill waste, and combating climate change with new technologies and innovations)
• Sailing safely
• Empowering people
• Strengthening our communities
• Operating with integrity and accountability

All Norwegian Cruise Line sailings also have an Environmental Officer on board who is available to answer guest questions and ensure the ship (and its procedures) remain in environmental compliance. Each NCL crew member goes through Environmental Familiarization Training as well.

Royal Caribbean: Pledge to Save the Waves

Royal Caribbean's conservation efforts are admirable. What started in 1992 as a Save the Waves program has evolved into a company-wide philosophy. They implement “reduce, reuse, and recycle” in creative ways, like a donation program so their sheets, mattresses, towels, furniture, and clothing are reused instead of discarded during upgrades and remodels.

Aside from a sustainable seafood program that is mindful of our consumption from the sea, they installed Hydrothermal Oxidation Technology on Celebrity Apex to ensure food waste isn't discharged into the ocean.

In addition to this, they lead the way in a variety of onboard efficiencies and programs that guide cruise sustainability. It's typical for them to focus on 30 years into the future, not just tomorrow, next year, or five years from now.

Their ships can hold thousands of passengers and crew (Wonder of the Seas can accommodate close to 7,000 guests), which is why it's impressive that 100% of their ships are equipped to be landfill-free. In just two years, they reduced their single-use plastics on board by 60%. The glass used in their ship's design is energy-efficient and LED lights to help reduce energy consumption.

Over 2,000 tours offered across the Royal Caribbean fleet are in line with the Global Sustainable Tourism Council guidelines for certified sustainable excursions. They also chart the most efficient course to reach each port as they optimize cruising speeds to reduce the fuel needed to get there.

If you love the environment like us and love to geek out on as much information as possible pertaining to cruise sustainability, check out more information about Royal Caribbean Group's “Seastainability” programs .

Interested in cruising? Read this next:

• Importance of Eating Sustainable Seafood and Local Fish for Healthy Seas
• 21 Ways to Be a More Eco-Conscious Cruiser Before, During + After a Cruise
• Stasher Bags Review: 16 Ways to Use these Reusable Bags on a Cruise

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Cruise Ships and Sustainability

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• Daniela Buzova 2  

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The global popularity of cruise holidays grows in parallel with the size of the ships, and so does the magnitude of their impact on the environment, the social equity, and the local economy. The sustainability of cruise ships has increasingly been in the eye of the media and the society, thus putting pressure on the industry. Indeed, cruise line companies are demonstrating more effort in reducing their environmental footprint in the last decade. However, many of them are limited to meeting international regulations, which is a reactive rather than a proactive approach to ensuring the sustainability of the industry in the long run. The lack of commonly accepted and operationalized sustainability criteria for assessing the social and economic impacts of cruise ships has resulted in loosely defined actions in these aspects. The goal of this chapter is to provide an overview of the environmental, social, and economic challenges associated with cruise ships’ sustainability, discuss how they are tackled by the industry nowadays, and offer guidance on how to address them through the adoption of innovative sustainable business practices, backed with commitment, collaboration, and transparency.

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Buzova, D. (2022). Cruise Ships and Sustainability. In: The Palgrave Handbook of Global Sustainability. Palgrave Macmillan, Cham. https://doi.org/10.1007/978-3-030-38948-2_131-1

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Cruise industry faces choppy seas as it tries to clean up its act on climate

• Medium Text

• The cruise industry is the fastest growing in tourism and is expected to exceed pre-COVID record highs in passenger numbers and revenues by next year
• The industry promises to make zero-emission vessels and fuels widespread by 2030, and to achieve a goal of 'net-zero carbon' cruising by 2050
• Environmental groups cite its record on pollution, greenhouse gas emissions, and over-tourism, and raise doubts about its ability to reach goals
• Concerns include widespread use of "scrubbers", LNG as transition fuel, and limited capacity for shore-based power in ports

Caroline Palmer is a freelance journalist specialising in business, health, sustainability and the artisan economy. She has worked for the Financial Times, The Guardian and The Observer and is a contributor to Ethical Corporation magazine.

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Home Blog Cruise Sustainability

Cruise Sustainability

Today is Earth Day, a day dedicated to raising awareness and bringing people together to take action in the fight against climate change. For over 50 years, citizens, businesses and governments have come together with a shared passion for sustainability. From The Great Global Cleanup to The Canopy Project, millions of us have volunteered and donated, and in doing so, we have contributed to a greener future. 

The theme for 2022 is ‘Invest In Our Planet. What will you do?’ At The Cruise Line, we understand that we all have a part to play. That’s why we’ve decided to plant a tree in Malawi for every cruise that gets booked with us. In doing so, we help the nation achieve its goal of restoring 4.5 million hectares of degraded land by 2030. But what are our partners doing to make a change?

It’s somewhat stating the obvious, but cruising has never had the best reputation for sustainability and environmental protection. Over the years, the criticisms have come thick and fast, promoting the idea that if you want to travel responsibly, doing so by cruise ship is not the answer.

A simple online search will reinforce this perspective, with data available on everything regarding passenger footprints tripling in size while cruising on a ‘large’ ship to the amount of waste and greywater generated during a one week voyage .

Despite its notoriety, it’s impossible to deny that the industry is making great strides to not only improve its image but, more importantly, to implement real tangible change. Most cruise operators have spent the past decade implementing vital strategies for enhanced sustainability, allied with a keen focus on reducing their fleets’ carbon footprint.

The Cruise Lines International Association is a critical player in this drive for change. As the world’s most prominent cruise industry trade organisation, CLIA has continued to advocate for sustainable cruising. CLIA’s message is clear: reduce carbon emissions by 40% by 2030. In addition, the association is also pursuing carbon-neutral cruising by 2050 across fleets of ocean cruise lines worldwide.

During 2018’s Seatrade Global Conference, CLIA’s president and CEO Cindy D’Aoust made an impassioned plea to those attending, requesting unity and innovation to improve sustainability.

“Because we are at sea, we must do better. We must be more efficient, we must be more effective, and we must be more mindful than the land-based resorts. No single community has a great imperative to protect the environment and ensure that the ports and destinations cruise ships visit thrive sustainably.”

As with any industry, some cruise lines have responded to the need for more earth-friendly cruising than others. However, early adopters are already on their way to becoming carbon neutral. At the same time, even those operators seen to be in the infancy of change have at least made small steps towards a more sustainable future.

What are the cruise lines doing to improve the environmental impact of cruising?

Here is a look at some of the steps taken by cruise lines to improve the impact cruising has on the environment.

Green fuels

The use of liquified natural gas (LNG) helps to eliminate sulphur emissions and reduce nitrogen oxides by 85%. In addition, LNG is the way forward for many new-build ships, while several operators are retrofitting older vessels for greener performance. Hurtigruten has taken this approach one step further, with six vessels running on a combination of LNG and battery power.

Onboard recycling & the reduction of single-use plastics

Nearly every cruise line has significantly reduced the amount of single-use plastics aboard their ships. Estimates suggest that ships now recycle up to 60% more waste since introducing more efficient ways to reduce, reuse, and recycle.

Advance water waste treatment

Water waste treatments are being installed across more fleets to treat water before being released into the marine environment. According to CLIA , some vessels repurpose 100% of water waste, while on average, “cruise ship waste management professionals recycle 60% more waste per person than the average person recycles on shore each day”.

Energy efficiency

Many cruise lines have focused on improving the efficiency of their fleets, using energy alternatives where possible:

• Installation of LED lighting, using 80% less energy
• The ability to connect to shore power when in port, reducing unnecessary emissions
• Tinted windows to recycle heat onboard
• The incorporation of solar panels to provide renewable energy

Optimised ship design

Several new-built vessels have an optimised hull to reduce drag and improve fuel efficiency where possible. One of the leading examples of such a design is Aurora Expedition’s Greg Mortimer, which boasts an X-Bow to reduce fuel consumption.

Cleaner exhausts

Cruise lines including NCL and Carnival have installed Exhaust Gas Cleaning Systems (EGCS), which “scrub” exhausts from high-sulphur fuel and thus improve the quality of air emissions. The system removes sulphur oxide and particle matter before leaving the ship, resulting in clean white steam plumes.

Partnerships & projects

Many cruise lines partner with charities and organisations to better promote sustainability and environmentally-friendly practices. For example, the WWF works closely with a handful of operators – including Azamara Cruises – with proceeds from the sale of their products directly benefitting the charity. Furthermore, Celebrity Cruises and Oceanwide Expeditions include beach clean-ups as part of the overall cruise experience, allowing guests and crew to dedicate a few hours of each voyage to litter collection.

Cruise Sustainability Index

If you’re considering going on a cruise holiday and would like to know more about what your chosen line does to operate more sustainably, we’ve created an index that details their efforts below. Our team regularly updates this content for accuracy.

Please choose one of the following cruise lines:

AmaWaterways

American queen steamboat company, aurora expeditions, azamara cruises, celebrity cruises, celestyal cruises, crystal cruises, emerald cruises, fred olsen cruise lines, hapag-lloyd cruises, holland america line.

• Hurtigruten Cruises/Hurtigruten Expeditions

Noble Caledonia

Oceania cruises, p&o cruises, ponant cruises, princess cruises, regent seven seas cruises, saga cruises.

• Scenic River Cruises/Scenic Ocean Cruises

Seabourn Cruises

Silversea cruises.

• Star Clippers

Tradewind Voyages

Victory cruise lines.

• Viking River Cruises/Viking River Cruises

Windstar Cruises

AmaWaterways has evolved rapidly alongside the need for a more sustainable approach to cruising with their modern river fleet incorporating innovative fuel-efficient engines, microfiltration, and energy-saving LED lighting. In recent years, AmaWaterways have earned Green Award certification for the positive environmental impact of their ships, waste management and pollution prevention. AmaWaterways’ newest Europe-based river ship, AmaMagna , has a 10-engine configuration installed to help reduce fuel consumption by up to 20%.

Other eco-friendly practices include:

• The use of recyclable water containers made of renewable resources
• Reduction in single-use plastics

The American Queen Steamboat Company ‘s commitment to environmental stewardship led the river cruise operator to become a member of the Passenger Vessel Association ‘s Green WATERS programme in 2017. They have also worked in partnership with the United States Geological Survey and the Mississippi River Cities & Towns Initiative to monitor water temperature and pollution levels.

• The installation of hydration stations to fill reusable drink-ware
• Recycling food and cooking oil wastage – as a company, American Queen recycled approximately 1,250 gallons of oil in 2019

Since the early 1990s, Aurora Expeditions have led the way in sustainable cruising. The introduction of Greg Mortimer in 2019 started a revolution regarding how the world’s cruise operators approach sustainability from a design perspective. Their innovative approach – purchasing carbon credits and reducing fuel consumption by up to 60% – has seen Aurora Expeditions classified as 100% carbon neutral. The next stage for Aurora is to achieve B CORP certification by 2023.

• The use of eco-friendly products and cleaning equipment
• Sustainable food programme scheduled for later in the year

Azamara Cruises has improved its environmental footprint by teaming up with the World Wildlife Fund . As part of Azamara’s commitment to helping protect and conserve our oceans and marine life, the sale of WWF-related merchandise in the ship’s onboard boutiques is donated directly to the organisation to support its ongoing conservation work. 

• Azamara aims to reduce the environmental footprint by helping marine life and raising awareness with separate marketing campaigns

Carnival Cruises

Carnival Cruises has continuously improved its fleet’s carbon footprint by using greener fuel throughout its operations since Mardi Gras became the first LNG-Powered vessel in North America in 2020. Carnival has since reduced its carbon rate by 23.4% and has begun switching the fleet from marine diesel fuel to the more efficient alternative, reducing its carbon emissions by 20%. 

• The company aims to reduce their CO2e emissions by 40% by 2030
• Carnival aims to achieve net carbon-neutral ship operations exceeding IMO’s goal of 50% absolute emissions reduction by 2050
• They are retiring less efficient ships throughout the fleet

Celebrity Cruises have installed LED lighting throughout their fleet, which requires 80% less energy, generates 50% less heat and reduces energy consumption. Additionally, all Celebrity vessels are equipped with Common Rail Diesel Engines, reducing NOX emissions at all engine loads. The Solstice-series ships are equipped with solar power technology to help reduce the consumption of energy derived from fossil fuels.

• Celebrity Cruises have installed high-efficiency appliances throughout the ship to minimise climate change and reduce their energy load
• Window films that are specially glazed prevent solar heat from penetrating, reducing the amount of air conditioning needed to cool the ship and saving energy
• They installed water-reduction technology throughout their fleet to reduce the use of water-producing equipment that consumes fuel or electricity
• New silicone paints are on the hull, reducing the energy needed to travel through water

Celestyal Cruises has reduced its CO2 emissions by 4,500 tonnes and has cut its fuel consumption by 5% to contribute towards improving its carbon footprint. In addition, Celestyal has reduced onboard waste by 15% and continues to monitor what they can do in the future to increase sustainability. 

• Desalinating seawater to cover 50% of onboard needs

Crystal Cruises is another cruise line to hold the Green Award certification for their river ships. They have recently installed LED lighting across the fleet to improve their environmental footprint. Furthermore, each vessel features a diesel-electric power plant that helps reduce fuel consumption and connects to shore power. Going forward, they aim to minimise waste and reduce the consumption of water and natural resources. 

Crystal Cruises’ new purpose-built expedition ship, Crystal Endeavor , is equipped with advanced positioning technology to ensure underwater ecosystems and reefs are not damaged. Furthermore, “biosecurity” screenings occur before and after every wilderness excursion to prevent pathogens from spreading from one site to another.

• Increase sustainable sourcing throughout the entire fleet
• Advanced waste-water treatment systems

Emerald Cruises use ship-to-shore technology to connect to land-based electricity providers while in port. In particular, one of their river ships, Emerald Harmony, has eliminated the use of all single-use plastic and replaced them with sustainable alternatives, from complimentary refillable bottles and filtered water stations to refillable toiletries in suites. Additionally, all their ocean & river vessels include state of the art sewage treatment plants with membrane filters.

• All engines comply with the strictest EU rules for inland waterways ships
• Emerald no longer uses pre-packaged food, plastic bags or straws

Fred Olsen strives to improve their carbon footprint by complying with all international policies and taking steps to exceed those policies  whenever possible. Their ocean vessels use a mix of low sulphur fuel oil and marine gas oil, reducing overall fuel consumption throughout. In addition, Fred Olsen has removed all single-use plastic as a company, replacing it with more sustainable alternatives.

• All onboard waste is sent to an onboard centre dedicated to safe waste disposal and recycling
• All printed marketing communication is on responsibly sourced FSC approved paper
• New linen bags have replaced plastic laundry bags

Hapag-Lloyd Cruises have installed SCR catalysts on their latest expedition ships ( Hanseatic Inspiration and Hanseatic Nature), which have helped reduce nitrogen oxide emissions by almost 95%. The esteemed German operator has also equipped vessels with a PROMAS rudder alongside low-pollutant marine gas oil. This unique propeller improves drive-in efficiency and consumes up to 18% less fuel.

• Optimising energy consumption beyond the ships’ engines through LED lighting
• Plastic waste is collected separately onboard the vessels and recycled on land
• Using sustainable alternatives to plastic – the kayaks onboard their new expedition ships are made from HTP

Holland America is committed to reducing, reusing and recycling across the entire fleet. They are currently transitioning to alternative fuels, investing in new low-carbon or zero-carbon emission technologies, and developing and installing advanced air quality systems. As a company, they are committed to reducing food waste and are installing biodigesters on their ships to help reduce their environmental footprint.

• Holland America aspires to achieve 100% fleet-shore-power connection capability and expand alternative fuels strategy across LNG programme and battery, fuel cell and biofuel capabilities by 2030

Hurtigruten Cruises / Hurtigruten Expeditions

Hurtigruten built the world’s first hybrid-powered cruise ships in 2018 ( Roald Amundsen ) and 2020 ( Fridtjof Nansen ). The vessels used green technology such as battery packs, heat recovery systems and new hull designs to reduce more than 20% of carbon emissions. The ships also reuse heat from the engines to warm the onboard hot water tanks, saving the power equivalent of 6,700 households per year.

• Hurtigruten stopped using heavy fuel oil over a decade ago
• Encourages guests not to have daily towel or bed sheet changes
• Microplastic-made fleeces are not for sale in the onboard gift shop, only natural wool clothing
• All guests are given high-quality reusable bottles, saving at least 1,000 bottles per day

Noble Caledonia provides refillable water bottles on their ships to reduce plastic use. As an expedition cruise line, they are heavily involved in helping to clear the plastic pollution from Aldabra’s turtle nesting beaches and tortoise grazing areas, where at one point, 25,750 kilograms of marine debris were removed over five weeks by a team of 12 people.

• Noble Caledonia operates beach clean-up days aboard their ships and conducts a beach clean-up of plastic and fishing gear. The waste is then returned to the vessel for disposal at the next port.

Oceania Cruises have eliminated several million single-use plastic bottles per year from onboard use and instead provided guests with refillable keepsake bottles. In addition, over 80% of self-produced water is used onboard across the fleet. Oceania previously purchased 3-million tons of carbon offsets, which is a step closer to achieving their aim to become carbon neutral. They are currently working to reduce their CO2 emissions rate and increase sustainable sourcing.

• Aiming for a 40% reduction in industry-wide carbon emissions rate by 2030
• All vessels on order will have cold-ironing capabilities
• Advanced Wastewater purification systems have been installed across the fleet

P&O Cruises has committed to a decarbonisation pathway involving significant carbon-efficient technologies and energy efficiency investment. As a result, P&O launched their first LNG powered ship for the British Market ( Iona ), significantly reducing carbon, sulfur dioxide and nitrogen oxides, alongside seeing an overall reduction in the company’s emissions by implementing the relevant technology on all vessels to connect to shore power when in port.

In addition, P&O have been improving their air emissions by installing AAQ Systems across the fleet, removing sulfur compounds and particulate matter from the ships’ engine exhausts.

• P&O are committed to reducing waste and preserving the value of natural resources
• They have reduced and eliminated non-essential single-use plastics, switching to more sustainable alternatives wherever possible
• They are working with suppliers to increase the sustainability of seafood sourcing and have promised never to source seafood that is rated as high impact, threatened or endangered

Ponant has offset 150% of its carbon emissions and is the first cruise line to achieve Green Marine certification . Additionally, Ponant recently acquired a 75% reduction in nitrogen oxide emissions by having the ship’s catalytic converters operate continuously. Ponant’s vessels are fitted with electric connections, using shore-to-ship power when docked at suitably equipped ports and are limited to an average speed of 10-knots whilst sailing, reducing fuel consumption by 30%.

In 2022, Ponant launched its first hybrid polar exploration ship powered by liquified natural gas and electric generators. Le Commandant Charcot also has an onboard scientific research team.

• In 2019, the cruise line became the first to exclude fuel oil and switch to Low Sulfur Marine Gasoil, ten times lower than the maximum
• As of 2022, single-use plastics have been eliminated across the fleet
• 100% of waste is separated and sorted, with 60% being recycled – that compares to the global average of less than 20%

The line is also committed to:

• Ensuring the reuse and traceability of all waste by 2025
• Reducing carbon emissions by 30%, nitrogen oxide by 85% and sulfur emissions by 98% by 2030
• Building an entirely carbon-neutral sailing ship which will launch no later than 2025

Princess Cruises aims to incorporate environmental practices that set a high standard for excellence and responsibility and help preserve the marine environment. They have achieved and maintained certification to the ‘Environmental Management System’ standard alongside investing in advanced air quality systems technology and the necessary equipment to minimise pollution.

• Committed to further-reducing fuel consumption
• Princess Cruises pioneered shore power in the cruise industry in 2001, allowing them to turn off their diesel engines and to a plug-in power supply in port

Regent Seven Seas has created a long-term climate action strategy to help achieve its goal of offsetting three million metric tons of carbon dioxide equivalent over three years. They have incorporated a voluntary carbon offset programme and explored more eco-friendly alternative fuels to use on their future voyages. Furthermore, they continue to self-produce approximately 83% of the water used on board to increase their environmental footprint. 

• Reducing single-use plastics
• Regent is part of the ‘Sail and Sustain’ Environmental Programme, focusing on reducing environmental impact

Saga purchases 96% of its electricity from a completely renewable power supply and has further reduced its environmental impact by installing advanced waste management treatment systems, increasing recycling and reducing onboard waste. Additionally, Saga is working with ‘ Travelife Gold ‘ certified hotels, which helps to promote sustainability within the tourism industry and to minimise their impact on the environment. 

• Saga’s ships have adopted the single-use plastic policy
• They have set a 30% reduction target for emissions by 2030, aiming to hit below their 2°c temperature rise global target by 2050

Scenic River Cruises / Scenic Ocean Cruises

Both Scenic Ocean and Scenic River fleets recently joined ‘ Climate Friendly ™’ and have committed to reducing greenhouse gas emissions by funding renewable energy projects and offsetting any emissions created, effectively becoming a climate-friendly business.

• Scenic purchases carbon credits from Climate Friendly™ to fund renewable energy projects such as wind and solar energy plants

Seabourn has maintained their excellent routine for continuous improvements in critical sectors such as fuel efficiency, greenhouse gas emissions and recycling. As a company, Seabourn continues to improve the quality of its emissions into the air by developing and operating advanced air quality systems across the fleet, capable of reducing sulfur compounds from the ship’s engine exhaust. Additionally, each ship has a full-time Environmental Officer who oversees environmental compliance.

• Reduced single-use plastic, swapping for reusable alternatives such as wood and bamboo
• Guests and crew are provided with reusable water bottles
• Seabourn continues to reduce waste generated by ship operations

Silversea’s new Nova-class ships – starting with 2023’s Silver Nova – will use hydrogen fuel cell technology to provide 100% of the power while in port, which, if successful, would be a first in the cruise industry. Additionally, the new vessels will use dual-fuel engines with LNG as the primary fuel, batteries, and fuel cells. 

Silversea’s purpose-built Galapagos ship, Silver Origin , incorporates environmentally low-impact features to comply with future rules and regulations, including Galapagos National Park Directorate regulations.

• The team at Silversea are working towards making the process of shipbuilding carbon neutral
• They are reducing fuel consumption and exhaust emissions

Star Clippers Cruises

The ships at Star Clippers operate under wind power up to 70% of the time, minimising the use of their auxiliary engines and contributing towards a reduced carbon footprint. The fleet is equipped with smaller, energy-efficient engines designed to exceed new regulations on exhaust gas emissions. Furthermore, Star Flyer was the first ship to be awarded the ‘International Air Pollution Prevention certificate.’

• Using a less polluting fuel grade and utilising high-quality, low-sulphur gas oil
• Only Eco-friendly products are used onboard their vessels
• Onboard recycling, reduced waste and proper disposal of remaining waste

Tradewind Voyages have been working hard towards reducing their CO2 emissions due to sailing without propulsion. Going forward, as a company, they are focused on using more efficient energy systems and eco-friendly fuels, reducing Nitrogen Oxide and Sulphur Oxide levels.

• Tradewind Voyages are reducing single-use plastics
• The feathering mode of ships’ propellers reduces the drag resistance through the water, increasing wind optimisation 
• The introduction of innovative water usage systems
• Reduction in food waste

Victory Cruise Lines have recently installed the Ulstein X-BOW on one of their ships, Ocean Victory , allowing the vessel to quietly glide through the waves with minimal vibration, reducing fuel consumption by up to 60%. Furthermore, all vessels have four diesel and two electro engines, reducing fuel consumption and allowing them to maintain Zero Emission Day capabilities that keep Alaska’s air and water clean.

• Stabilisers have been implemented throughout the fleet, minimising the necessity of dropping anchor and protecting seabeds
• Marine biologists, scientists and naturalists from the Department of Marine Biology at California Polytechnic State University are on board to lead excursions and host lectures to guests and fellow crew members

Viking Ocean Cruises / Viking River Cruises

Viking has focused on reducing its carbon footprint across its ocean and river fleets, reducing their fuel consumption and greenhouse gas emissions by 40%. 

The ocean ships have an energy-efficient hull, propeller and rudder arrangements alongside efficient engines with heat recovery systems.

Viking’s river vessels, Viking Legend and Viking Prestige, are fitted with diesel-electric hybrid engines, which reduce fuel consumption by 20% compared to regular diesel vessels. Additionally, both ships boast solar panels to increase their energy efficiency.

• Viking owns a higher energy efficiency design index that exceeds the International Maritime Organization requirements for 2025 by almost 20%

As a company, Windstar has kept up with the formulation and maintenance of environmental management systems, therefore achieving an ISO 14001 certification. They have been busy reducing their ecological footprint and have recently installed eco-friendly LED lighting throughout, already using 90% less energy. In addition, all vessels have had stabilisers containing heavy metals removed to reduce CO2 emissions by 50%.

Whilst using the sails in tandem with the engines, fuel consumption is significantly reduced compared to when the engines are the sole operator.

• Converted to 100% recyclable packaging
• Windstar uses environmentally friendly materials onboard and within the ship’s design

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Meet the Sustainability Champions: Future Leaders 2024

Today, we are bringing you the Sustainability Champions. These are Future Leaders who have been nominated for their outstanding contributions to sustainable design within the cruise ship interior design community. Our Sustainability Champions are:

• Fabiana Vale Dornelas, Senior Interior Architect, YSA Design
• Patrick Ostheimer, Owner, POI Design

Fabiana is the Head of Sustainability & Implementation at YSA Design, championing change within the company as part of a new department focused on driving sustainable design. Patrick is the winner of the 2023 Most Sustainable Interior award at Cruise Ship Interiors Awards

Future Sustainability

We asked our Sustainability Champions to predict a future for sustainable cruise ship interior design, being as ambitious or as realistic as they would like. We wanted to know changes were taking place now, what needs to happen and the end destination for sustainable design. Fabiana pointed to the ways cruise brands had already collaborated with design studios and suppliers to improve the sustainable environment on board. She said, ‘From using recycled materials and incorporating nature-inspired designs to implementing energy-saving lights and air systems, these ships are leading the way in environmental responsibility. 

Efficient fixtures help conserve water, while recycling programs reduce waste on board.’

Patrick looked to the future and a way to design with circularity in mind. He said, ‘Future cruise ship design and of course, the interior design, should incorporate environmentally friendly materials and focus on materials that are recyclable, such as biodegradable base materials. Modular furnishings and the circular approach allow rooms to be flexibly redesigned and adapted to passenger requirements – which in turn also means that interior spaces are used more efficiently and the service life of furnishings is extended.’ 

Changing our present

One of the strongest messages arising from any conversation surrounding sustainability at CSI, or SDS, is that the industry is full of passionate advocates for sustainable design. They want to help lead the change so needed in the industry. Their companies and many design studios and suppliers like them are ready to make the change. Their question – how do we get started. 

We discussed this dilemma with Fabiana and Patrick, asking them how they thought their peers could help lead the charge for change within sustainable interior design. Patrick recommended upskilling your workforce and creating a culture where everyone felt welcome to suggest new ideas. He said, ‘Sustainable design and its impact on the environment can be communicated directly through training, workshops and internal communication channels. Traditional ways need to be reconsidered and new paths taken – this requires innovative ideas and solutions… Create synergies and develop holistic solutions in terms of sustainability – consider different angles and perspectives and utilize the expertise of the individual; all of this can lead to innovative and effective solutions. 

Fabiana agrees that peer-led change can be extremely effective in driving change within a company. She recommended that designers inspired to make a change sought support from their colleagues and made a point of collaborating across departments. She said, ‘Peers play a vital role in fostering sustainable design within their companies. By advocating for eco-conscious practices and actively participating in initiatives, they can make a tangible difference. This involves educating colleagues, collaborating across departments, participating in green teams, promoting continuous improvement, staying informed and celebrating successes.’

Sustainable Leadership

Our Sustainability Champions have been nominated for their work in driving change. But they are also known by their colleagues to be a leader who inspires. We tapped into their knowledge and experience of leadership to learn what attributes they thought made an effective leader.

Fabiana felt that good leadership sprung from good communication and giving weight to the perspective of every member of the team. She said, ‘Good leadership means inspiring and empowering others, fostering a supportive environment where everyone’s contributions are valued. A good leader leads by example, showing integrity, authenticity, and accountability. 

They prioritize clear communication, listen to diverse perspectives, and make informed, empathetic choices. Good leadership encourages continuous learning, innovation, and adaptability. Ultimately, a good leader serves their team with humility, empathy, and a commitment to excellence, driving positive change and achieving success together.’

Patrick also recommended investing in the members of your team. He said, ‘For me, good leadership means inspiring, supporting and empowering people to develop their full potential and achieve common goals… Empathy is crucial in order to understand the needs and perspectives of team members and to be able to respond appropriately. Good managers invest in the development of their employees by giving them feedback, challenging and encouraging them and offering opportunities for professional development. They recognize and use the strengths and the diversity of each individual to strengthen the team as a whole.’  

You can find out more about the Future Leader programme and this year’s Future Leaders here . Attend CSI at Miami Beach Convention Center and meet many of the Future Leaders. Or, look out for more interviews, articles and brand q&as here and over at CSI+.

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Sustainable Cruises: 6 Cruise Lines Making Progress

C ruising comes with a lot of positives – it's fun, relaxing, convenient and often relatively affordable. But when it comes to the environment, it isn't all smooth sailing. According to recent research, a large cruise ship can result in a carbon footprint greater than that of 12,000 cars. Another study found that an individual traveler's carbon footprint is roughly eight times greater than the carbon footprint of a person vacationing on land.

"When we measure sustainability, it's important to look at the whole picture, and overall, cruise ships are too big, too dirty and too invasive to pristine ecosystems to be considered sustainable or environmentally conscious," says Marcie Keever, director of oceans and vessels at environmentalist group Friends of the Earth. "Their significant carbon footprint and ongoing use of polluting scrubber technology that continues to result in the dumping of toxic chemicals into the ocean are two major issues."

So, how does that translate for the average cruiser – and what can you do to make a difference? While some environmentally conscious travelers may choose to take a vacation on land, those who would like to stick with a cruise getaway should consider their options carefully. Not all cruise lines are created equal, and some are making more progress than others in implementing policies around more sustainable fuel types, hybrid-electric ships and their commitments to a cleaner future.

If your heart is set on taking a cruise vacation , consider these tips to leave less of an impact on the environment during your trip.

• Opt for a shorter voyage (or a smaller ship):  One simple way to keep the environment in mind during your vacation at sea is by choosing a shorter itinerary and avoiding massive megaships built to carry thousands of people. "Some cruise lines are limiting the length of cruise runs which is a good start, and [they] are also commissioning smaller vessels to travel shorter distances for shorter periods of time," says Keever. Opting for a midsize ship or a  small ship  and a three- or four-night voyage over a cruise lasting seven to 10 days will keep the mileage to a minimum, which in turn will limit the carbon emissions and other damage inflicted upon the environment.
• Choose a cruise line that values transparency:  In an effort to keep cruisegoers in the loop, many cruise lines have begun making public commitments to improve their operations. On top of that, some have also started including annual sustainability reports on their websites. Major lines like Regent Seven Seas Cruises, Virgin Voyages, Disney Cruise Line, Oceania Cruises and Norwegian Cruise Line all earned an "A" for transparency on Friends of the Earth's 2022 Cruise Line Report Card, which the organization based on the cruise lines' willingness to provide detailed information about environmental practices when asked.

Below, you'll find six cruise lines around the world that are working toward a greener future on the high seas.

Hurtigruten Norway

The largest expedition cruise line in the world, Hurtigruten highlights four pillars on its journey toward sustainability: emissions, people, community and nature. To protect destinations from the effects of overtourism, the line avoids popular areas during peak seasons, restricts the number of guests on shore and limits the size of its vessels. Hurtigruten's ships also source about 80% of their food from local providers and work to minimize the amount of food waste on board.

Perhaps most impactful is Hurtigruten's current work to develop state-of-the-art, eco-conscious vessels. Between 2020 and 2021, the expedition line debuted three battery-powered hybrid-electric ships, and all 14 vessels can be connected to shore power while in port (if the option is available at that destination).

"Hurtigruten is looking to launch zero-emissions ships, which will reduce the amount of heavy fuel they use," notes Keever. The first of these ships is set to launch by 2030; the line is aiming for carbon neutral operations by 2040 and net-zero emissions by 2050.

The cruise provider also uses other eco-conscious equipment and transportation options on tours, including power through solar panels, electric snowmobiles and tour buses, hybrid sightseeing boats and battery-powered catamarans.

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MSC Cruises

With the goal of achieving a 40% emissions reduction by 2030 and total net-zero cruising by 2050, MSC Cruises ' commitment to the environment spans each of its 20-plus ships. The line has been steadily working toward a more sustainable future for the past 15 years: Since 2008, it has reduced its carbon emissions by 35%. Much of the more recent success stems from MSC's use of liquid natural gas (LNG). The line currently operates two LNG-fueled vessels – MSC World Europa and MSC Euribia – and a third natural gas-powered ship is in the works. Euribia's inaugural sailing in June 2023 was the first net-zero greenhouse gas emissions voyage in history, saving 43 tons of fuel.

Additional environmental efforts include the use of shore energy when in port (as of 2022, 65% of MSC's ships were fitted or retrofitted to use shore power), water-saving technologies that allow ships to self-produce almost all of their water supply on board (to the tune of almost 800,000 gallons maximum per day) and smaller scale features like energy-efficient lighting and ventilation systems.

The eco-conscious initiatives continue on land, where travelers can opt for special shore excursions called "Protectours." These outings are centered on low-impact transportation – think: walking, kayaking, cycling and use of electric or hybrid shuttles. Select Caribbean itineraries may also visit the unspoiled beaches of Ocean Cay MSC Marine Reserve, the line's private island in the Bahamas . Formerly used as an industrial sand excavation site, Ocean Cay covers 64 square miles of marine reserve and is home to 400 restored coral reef colonies, as well as a variety of bird, fish and other marine species. The island runs on a mix of solar panels and energy-efficient power sources; and single-use plastics are prohibited.

Book an MSC Cruise on GoToSea, a service of U.S. News.

Aurora Expeditions

Billed as 100% climate neutral and a member of two sustainability groups – the Association of Arctic Expedition Cruise Operators and the International Association of Antarctica Tour Operators – Aurora Expeditions is committed to responsible cruising. The line carries small groups of adventurers on 10- to 26-day voyages to the Arctic, Antarctica and other less-traveled destinations, such as the Patagonia wilderness.

To offset its greenhouse gas emissions, Aurora Expeditions invests in two climate action initiatives: a renewable energy wind farm in Taiwan and a conservation program in Australia. Environmentally focused cruisers may feel most at home aboard the Sylvia Earle expedition ship, which has seven decks all named after well-known ocean preservationists. On day six of each itinerary on the Sylvia Earle, Aurora hosts a Sustainable Sea Day, when seafood is not served on board to help protect marine populations.

Additional environmental efforts include specialized water and waste management systems, efficient onboard energy sources, reduced single-use plastics, locally sourced food, eco-friendly products on board and more. On top of that, two of Aurora Expeditions' ships, Greg Mortimer and Sylvia Earle, feature a fuel-efficient bow design that can travel at higher speeds while reducing wave-load vibrations, which in turn produces fewer emissions.

Havila Voyages

Havila Voyages debuted in late 2021 and operates four small ships along the Norwegian coast. Hybrid vessels are equipped with the largest ship battery packs found among passenger ships, which power each ship for up to four hours with zero emissions. The ships utilize LNG for the remaining route; between the natural gas and battery power, carbon emissions are cut by 35%. Havila has the goal of reaching climate-neutral operations by 2028 and emission-free operations by 2030.

On board, Havila serves locally sourced meals and is committed to reducing food waste; as such, there are no buffets. In 2022, the line successfully limited the daily average food waste per passenger to 71 grams (about 2.5 ounces). Havila ships also minimize the amount of paper and plastic products on board, encouraging guests to bring and refill reusable water bottles instead.

Travelers looking to go the extra mile have the option of participating in Havila's Eco-Voyager Program, which challenges guests to make environmentally friendly choices while on board. Items on the checklist include reusing towels and opting for room service every other day, recycling any trash at the ship's dedicated stations, unplugging device chargers when not in use and more. The line also offers eco-excursions in port; tour groups are kept small and Havila partners with local providers that utilize eco-friendly transportation, like battery-powered buses.

Virgin Voyages

Like other lines on this list, Virgin Voyages aims to achieve net-zero carbon emissions by 2050. Virgin's ships are all on the newer side (the line's first ship, Scarlet Lady , debuted in 2021), so they benefit from modern technology that optimizes energy and fuel usage. Additionally, the ships boast futuristic features like in-room energy-saving sensors to operate the lights, curtains and air conditioning, as well as smart wearable bands (used as room keys, for boarding and more) made of recycled ocean plastic.

Virgin's ships serve ethically sourced seafood and other local ingredients, and they do not have any buffets, which helps lower food waste on board. There is also an onboard recycling system, and single-use plastics are not on any ships. In fact, Virgin primarily offers sustainable products for all of its paper, plastic and other disposable items (using materials like wheat and sugar cane stalks). 

All three of Virgin Voyages' vessels utilize bipolar ionization (BPI) systems shipwide. "Dozens of cruise companies have made their ships more sustainable by adding BPI technology to their HVAC systems," says Steve Levine, president and CEO of sustainable indoor air technology company AtmosAir Solutions. "BPI devices make ships more energy efficient by lowering the amount of outside air that needs to be brought into a ship, essentially recycling and treating the air indoors and saving energy."

Book a Virgin Voyages cruise on GoToSea.

Founded in 1988, PONANT is a French-owned luxury line of expedition yachts. The line is working toward six major environmental goals: minimizing nitrogen and sulfur oxide emissions, reducing carbon emissions, banning single-use plastics, reusing and tracing all waste, investing in scientific research and supporting the development of protected marine areas.

In practice, PONANT utilizes high-quality wastewater treatment systems, navigation technology to help reduce fuel usage, and locally sourced food and drinks. On top of that, 60% of packaging on board is recycled, and PONANT regularly organizes beach cleanups. In 2018, PONANT founded the PONANT Foundation, which aims to support conservation efforts across the oceans and polar regions.

PONANT's Le Commandant Charcot expedition ship runs on a combination of battery power and LNG, and the line was the first to be awarded Green Marine certification for its commitments to improving its sustainability.

Why Trust U.S. News

Nicola Wood is a senior travel editor who manages the U.S. News Best Cruise Lines rankings. She is always reading up on the ways cruise lines are evolving and working toward a more sustainable future. Her passion for the environment extends beyond the cruising industry; in fact, she and some of her colleagues recently worked with EARTHDAY.ORG to pick up almost 750 pounds of trash along the Anacostia River in Washington, D.C., in celebration of U.S. News & World Report's 90th anniversary . Wood used her researching skills and guidance from environmental experts to write this article.

You might also be interested in:

• The Best Cruise Lines in the Caribbean
• The Best Cruise Lines in the Mediterranean
• The Best Cruise Lines for Families
• The Best New Cruise Ships

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