How do you keep a cruise ship from sinking?

Cruise ships may be huge, but the ocean is much, much bigger. The U-shaped hull of a cruise ship displaces thousands of tons of water, pushing it down and to the sides, but the ship doesn't sink because the density of the water pushes back against the ship, keeping it afloat.



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Put on your life jacket, secure the life jackets of those near you, and get to the lifeboats as promptly as possible. The International Maritime Organization requires that all cruise ships be able to get passengers in lifeboats and lowered into the water within 30 minutes of their gathering on deck.

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Why Ships Sink – 10 Major Reasons
  • Flooding. Flooding is the most common reason why ships sink. ...
  • Grounding and Collision. ...
  • Loss of Stability. ...
  • Poor Weather Conditions. ...
  • Negligence and Human Error. ...
  • Faulty Equipment. ...
  • Improper Maintenance. ...
  • Wartime Casualties.


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Over the past 100 years since the RMS Titanic sank in 1912, only 18 cruise ships and some ocean liners have been publicly known to have sunk. And, over the past 50 years, only four cruise ships have sunk while navigating on a cruise.

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A rogue wave could sink a ship, although most modern cruise ships are big enough to withstand the majority of smaller rogue waves, though not without damage. Smaller ships are more at risk, but they are also more manoeuvrable so would stand a higher chance of being able to navigate out of the wave's path.

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In calm waters, ships often can be towed safely to the nearest shore. In rough seas, other options would be considered. Abandoning ship really is a last resort, as moving passengers from one ship to another on the open sea can be dangerous, particularly in inclement weather. As is ordering passengers into lifeboats.

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Yes, cruise ships have brigs, which is the nautical term for a jail on a vessel, including a cruise ship. The term comes from the word brigantine, which is a type of two-masted sailing ship formerly used to house criminals.

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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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As soon as an incident happens, cruise ship crew will activate a button that pinpoints the place where the person went into the water. The ship will then stop and turn back to that area. The ship and its crew will perform a lengthy search and rescue operation, lasting several hours.

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A possible forced stay at sea: If the storm proves too formidable, the ship may need to hunker down and ride it out at sea. A slim chance of sinking: It's an unnerving thought, but the possibility exists. If the ship takes too much damage, it could go down.

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Approximately 40% of the average cruise ship sits below water. The larger or higher the ship, the less of it is in water. This may seem counterintuitive, but this is how math and physics work out!

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No, a rogue wave cannot tip over a cruise ship like in the movie Poseidon. While it is true that rogue waves can reach heights of up to 30 meters and have been known to cause damage to ships, they are not powerful enough to flip an entire vessel upside down.

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Experts agree that a cruise ship sailing out over a body of water is not likely to feel any impacts from a tsunami's waves. “Generally, if you're in deep ocean, there's no way that you can perceive a tsunami from a ship,” Heaton said.

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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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