How does a cruise ship not run out of water?

1. Steam Evaporation: Also known as flash evaporation or steam desalination, the process uses steam and heat from the ship's engines to boil seawater. The water evaporates, leaving the salt as a byproduct. The now fresh water is then condensed back into distilled purified water.



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Most ships can store 500,000 gallons of fresh water in massive tanks located in the hold area. After guests have used the water for showering, toilet water, laundry, etc., the crew treats it before releasing it into the ocean. A cruise ship will bring fresh water onboard when they visit ports.

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Shipboard potable water (drinking, bathing, whirlpools, etc.) either comes from a shoreside water treatment plant or is generated on board from seawater via Reverse Osmosis systems or Evaporators.

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The answer to how much of a cruise ship that is underwater varies depending on several factors. It's all about the size of the ship and the amount of load being carried. But in general, it is around 10% of the ship's height or around 30 feet for the biggest cruise ships out there.

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When a toilet is flushed on a cruise ship, the sewage travels to the onboard treatment plant. Here the waste is filtered before it enters an aeration chamber. The aeration chamber cleans the waste. It is then sterilized using UV light and released into the ocean when clean enough to do so.

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Cruise ship pools are usually filled with saltwater which has been chemically treated. On some cruise ships, you will find freshwater pools but these are less common. It is possible to have a cruise ship where some pools are fresh and some saltwater, this is very common on Royal Caribbean cruise ships.

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Cruise ship tap water is safe to drink unless you are told otherwise by the ship's authorities. The water throughout the ship has been treated, filtered and frequently tested to meet the standards of the World Health Organization and the U.S. Public Health Service on ships sailing into and out of U.S. ports of call.

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Keep in mind that all drinking water that's available on a cruise ship is required to go through a strict testing system. Even though ocean water is filtered before any passengers drink it, the B12 and D3 vitamins that can naturally be found in ocean water still remain.

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Cruise lines drain their swimming pools at night to discourage guests from trying to enter the pool when it is closed. Draining the swimming pools each night also allows the cruise lines to replace the water with clean water and a drained swimming pool is safer if the weather is rough.

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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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Shipboard potable water (drinking, bathing, whirlpools, etc.) either comes from a shoreside water treatment plant or is generated on board from seawater via Reverse Osmosis systems or Evaporators. Swimming pool water is typically seawater.

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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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Diesel Electric. New cruise ships feature diesel electric propulsion. So rather than being connected to the propeller shafts, the main engines are connected to large generators in order to produce electricity. This electricity is sent to electric motors, which powers the propellers and moves the ship.

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Cruise line companies design ships to have various storage areas for different food items ? fresh vegetables, dairy, different types of meat, canned items and even beverages. Each of these storage areas has different temperature settings linked to the food being kept within.

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All mainstream and luxury cruise ships have at least one pool; river and expedition ships often do not. In general, cruise lines put their pools on the topmost deck, referred to as the Pool Deck or Lido Deck. (Lido is a 19th-century term meaning a fashionable beach resort.)

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The ships have boilers (most oil fired, but some also have exhaust gas waste heat boilers) that generate steam. This steam is used to heat domestic hot water, and laundry water, but this is just really a secondary use. The major use for the steam is to heat the fuel for the engines.

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Using an intensive filtration process, each cruise ship ensures that the water is safe for guests. There are also rules regarding recycling water. The vessel will not reuse water for other guests aboard the ship. The water used becomes separated into grey water used for showers and laundry.

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Yes, but I wouldn't fill them from the bathroom sink. The ship has water dispensers in several places (buffet, spa, most bars), so bring a large (empty) insulated cup with a lid and straw, and keep it filled with ice water. You might need to pour the water in from a glass, but there's drinkable water readily available.

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Final word. On most cruises, you're welcome to wander the ship with a drink in your hand, at least in most areas. It's just like one large resort, so grab your favourite tipple and then find your perfect spot to enjoy it. Just make sure you ask for plastic glasses if you want to head over to a pool or hot tub.

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The drinking age on all U.S.-based cruise lines is 21 -- even when sailing international waters. (Under special circumstances, some cruise lines allow 18- to 20-year-olds to purchase and consume alcohol with a parent's consent.) Regardless of the policy, you should never buy a drink for someone under 21.

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Cruise ships generally drain their pools late at night (after the pools are closed and covered by netting). Then in the morning, they are refilled with new water.

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