What are the negative impacts of cruising?

The filthy fuel (called marine gas oil) means the big diesel engines on cruise ships emit tons of toxic smog that people on board and in port cities have to breathe. And while the smog is the most obvious in port, cruise ships also emit tons of greenhouse gases. (Cruising is actually worse for the climate than flying.



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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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The filthy fuel (called marine gas oil) means the big diesel engines on cruise ships emit tons of toxic smog that people on board and in port cities have to breathe. And while the smog is the most obvious in port, cruise ships also emit tons of greenhouse gases. (Cruising is actually worse for the climate than flying.

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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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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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The bottom line is everyone knows it is safer to fly than it is to drive, and it just so happens that it is safer to cruise than it even is to fly. TravelPulse writer Donald Wood contributed to this report.

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The 5 Most Dangerous Parts of a Ship for Passengers
  • Watertight Doors. Never try to outrun a closing watertight door. ...
  • Wet/Slippery Surfaces. ...
  • Ferries & Lifeboats. ...
  • Dining Facilities & Fast-Spreading Illnesses. ...
  • Balconies. ...
  • Talking to a Florida Cruise Ship Injury Attorney.


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Port pollution: Cruise ships generate plastic waste not only while at sea but also while in port. This can contribute to plastic pollution in the surrounding waters and on nearby beaches.

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Cruise ships generate a number of waste streams that can result in discharges to the marine environment, including sewage, graywater, hazardous wastes, oily bilge water, ballast water, and solid waste. They also emit air pollutants to the air and water.

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According to research compiled by the Daspit Law Firm, cruise ships have the lowest rate of deaths per billion passenger miles with 0.08. Compare that to 11.9 for rail travel, 3.3 for cars and trucks and 0.8 for commercial air, and traveling on the seas is a relatively safe venture.

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There is no longer any doubt that land-based vacations, even with plane and car travel, are overwhelmingly less polluting than getting on a cruise ship.

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Augment this with no dumping solid waste at sea, (e.g. ground glass, cardboard and packing material, plastic), no discharges of hazardous chemicals or materials of unknown environmental impact (e.g., incinerator ash, sludge from smokestack scrubbers), and on all cruise ships have independent human monitors to observe ...

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Cruise ships, huge compared to other vessels, end up burning more heavy fuel oil, one of the dirtiest fossil fuels on the market. This oil contains dangerous levels of sulfur and heavy metals etc. It is estimated that cruise ships use, on average, 150 tons of heavy fuel oil every day.

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Using the associated calculated climate factor of 2.1 (for a 2,000-3,000 passenger ship), we estimate that one individual on a 7-day cruise will have a carbon footprint of 300kg per day if that individual stays in a standard double-occupancy cabin.

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Thankfully, very few cruise ships have actually sunk in modern history. Even so, the Titanic's sinking impacted maritime law so much that there are more than enough lifeboats for all passengers and crew onboard any given sailing. Within the last 111 years, over 20 cruise ships and ocean liners have sunk.

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