What are the biggest problems cruise lines have?

Some of the environmental challenges that cruise lines need to address are air pollution from heavy oil, wastewater discharge issues, habitat disruption, and overtourism. The 'elephant in the room' is that cruise lines are currently using heavy oil – also known as the dirtiest of the dirty oils.



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Geopolitical, terrorism and extreme weather will also continue to provide challenges. Cruise tourism growth needs to be environmentally sustainable supported by adequate port infrastructure, especially with some new ships scheduled to carry over 6,000 passengers and 3,000 crew members.

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The most polluting cruise ships operator was MSC Cruises – whose cruise ships emitted nearly as much SOx as all the passenger vehicles in Europe. Accounting for all of its subsidiaries, the Carnival group polluted the most. Many cruise operators like MSC are investing in fossil gas (LNG) as a cleaner alternative.

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The 2023 cruise industry is booming. It has far surpassed 2019 levels, breaking sales records in a furious, post-pandemic comeback. Like most tourism sectors, cruising is reaping the benefits of “revenge travel”— vacationers making up for the time that was lost during the pandemic.

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CLIA forecasts passenger numbers will not only meet but exceed pre-pandemic levels by the end of 2023. And according to Cruise Industry News' cruise ship orderbook for ocean-going vessels, nearly 40 new ships are lined up to debut this year alone, with more than 75 vessels on order through 2027.

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Cruise ships emit more carbon per passenger kilometre than flying, even considering the extra damage that emissions cause at high altitude. It's thought that the Queen Mary II emits 0.43kg of CO2 per passenger mile – that's even worse than the 0.257kg for a long-haul flight.

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In 2023, a decade-high number of cruise ships have reported an unwelcome passenger on board: norovirus. Outbreaks of the stomach bug have surged on cruise ships this year, reaching the highest levels seen in 10 years.

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The wastewater that the cruise ship uses is heavily treated. It is either discharged into the water in designated areas of the ocean or released onshore into the local water treatment system.

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Cruise ships can harm coral reefs. Pollution from cruise ships can threaten coral reefs. Cruise ships can also damage reefs through collisions and anchors. Recent studies have linked coral diseases to human sewage not unlike what is released from cruise ships.

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How are cruise ships harmful to our environment? Cruise ships utilise enormous amounts of fuel. They also generate vast quantities of solid and liquid waste, often dumped into oceans and seas, affecting marine flora and fauna. The carbon emissions released into the atmosphere pollute the air.

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1. The Norwegian company Hurtigruten. Among the most environmentally sustainable ships are certainly the ships of the Norwegian cruise line Hurtigruten. The company has already eliminated heavy fuel oil (HFO) for more than a decade and uses alternative and greener fuels such as marine diesel oil and biofuels.

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Are cruise ships worse than cargo ships? This reveals how disproportionately bad for the environment cruise ships are, releasing the highest amount of black carbon per ship of any vessel. Container ships, on the other hand, produce around a third of the black carbon per ship, at only 3.5 tonnes.

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Barcelona; Venice, Italy; and Key West, Florida; have each moved to limit large cruise ships in recent years for similar reasons. But as they say, a picture is worth a thousand words. Take a look at these striking photos and see for yourself why more cities are saying no to cruise ships.

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A medium-sized cruise ship spews greenhouse gas emissions equivalent to those of 12,000 cars, while environmentalists accuse big industry players of investing little in decarbonization, and of covering up endless delay tactics in a heavy coat of greenwash.

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Are cruise ships safe? Let's cut right to the chase: Yes, cruise ships are generally safe as long as you use common sense and remember that vessels are not impervious to accidents, illness or people who just don't know how to behave.

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Are cruises in high demand? The 2023 cruise industry is booming. It has far surpassed 2019 levels, breaking sales records in a furious, post-pandemic comeback. Like most tourism sectors, cruising is reaping the benefits of “revenge travel”— vacationers making up for the time that was lost during the pandemic.

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AE: A passenger ship's design life is normally 30 years. It's the age used as the basis for the design and production of all major elements, including the steel structure and machinery.

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Passengers of diverse age groups are welcome on cruise ships. There are also endless activities for people of all age groups to make their vacations memorable. Nevertheless, the average age of cruise ship passengers is generally 47 years.

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