How bad is cruise ship pollution?

On average, a cruise ship generates 15 gallons of toxic chemicals each day. These materials come from on-board dry cleaning and photo-processing facilities, painting and other activities. Seven thousand gallons of oily bilge water are released into the oceans every time the ship empties its bilge tanks.



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A June study from sustainable transport campaigner The European Federation for Transport and Environment found that 63 cruise ships owned by parent company Carnival Corporation emitted 43% more sulfur oxides, a group of harmful air pollutants, than all the 291 million cars in Europe in 2022.

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Currently, cruise ships and other maritime vessels are responsible for nearly 3% of global greenhouse emissions each year. Considered to be worse than flying in terms of carbon emissions per passenger, a report by Pacific Standard revealed that a person's average carbon footprint triples in size while on a cruise.

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Taking a seven-day cruise is more than three times as carbon-intensive as flying and staying abroad.

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Ship exhaust contains harmful constituents, including metals and polycyclic aromatic hydrocarbons, many of which have toxic, possibly cancer-causing properties, Kennedy said: “It's dangerous it's not a healthy thing for us to be exposed to.”

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Cruise ships very rarely sink, and when they do it is often when they don't have passengers on board. Just over one cruise ship every 5 years has sunk in the last 100 years. Regarding sinking with casualties, that's only one every 7 years.

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Research shows that cruising emits up to four times more CO2 per passenger than flying. While air travel costs between 0,11 and 0,16 kg per passenger per kilometer – a significant amount -, taking a cruise ship adds up to a staggering 0,40 kilograms per kilometer.

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Vacuum suction lines zip toilets' contents to marine sanitation farms, which siphon out the water, treat it until it's drinkable, then pump it into the ocean. Helpful aerobic bacteria digest the remaining sludge in storage tanks until it's all offloaded ashore, about once a month.

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Cruise ships are only permitted to release human wastewater that has been heavily treated. Solid waste is also treated and dehydrated but not released into any open body of water. Instead, it is disposed of through standard, onshore waste disposal methods once the cruise ship is in port.

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Cruise ships contribute to ocean pollution in many ways. They generate large amounts of waste, including sewage, gray water, and solid waste, which can contain harmful chemicals and pathogens.

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Sewage and rubbish being dumped in the sea, air and water being polluted, whales being hit by cruise ships sailing too close to shore, invasive species being introduced by pumping ballast water.

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While it is technically possible that a cruise ship could tip over, it would be extremely unlikely in the modern era. Even during the most severe storms, a modern cruise ship is far more stable than you might assume.

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Cruise ships are designed to be incredibly safe and reliable, so thankfully they don't sink very often. In fact, the last major cruise ship sinking was in 2012 when the Costa Concordia capsized off the coast of Italy.

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Hurricane Season For these reasons, September is the worst month of the year to take a cruise. April and May are excellent times to go because they are outside of the hurricane season, although some Caribbean destinations see more rainfall than normal in May.

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Unfortunately, despite all the precautions that cruise lines claim to take, it happens. Just as nasty viruses can spread like wildfire amid crowded cruise ships, so can bed bugs. While ship-wide infestations are rare, they're becoming less so.

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What is the Safest Cruise Line? The CDC gave ships with Disney Cruise Lines a score of 96 or above on their 2016 inspections.

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We have prepared a list of part of the cruise that is the safest:
  1. Mid-ship staterooms. Choosing a room in the ship's centre is the greatest method to prevent seasickness if it is something you are concerned about. ...
  2. Lower decks. ...
  3. Ocean-view balconies. ...
  4. Aft cabins.


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In 2023 thus far, there have been 10 overboard incidents affecting 11 people, according to data compiled by Ross Klein, a social work professor at Memorial University of Newfoundland, who runs a cruise safety website. Nine of those eleven people died as a result.

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