They have desalination equipment. Desalination can be done in several ways -- distillation, reverse osmosis, nanofiltration and others.
I'm not sure if it still is but not long ago ships used multiple stage flash distilling units. Seawater is heated to about 170 degrees F and sprayed into a chamber that's at a vacuum. Some of the water flashes into vapor and is collected as distilled water, the remaining, now saltier, water is pumped to the next stage and the process repeated.
Ships float in fresh water too. Only a little deeper, since fresh water is less dense than salt water.
Salt water is more dense than fresh water. So when you're in salt water you float more than when you are in fresh water
It is because the fresh water has less density compared to that of salt water.
just add salt to fresh water
Humans cam survive for about 3 days with out fresh water. Fresh water is brought on ships for this reason because distilling salt water on a ship is difficult.
salt water!:)
Salt water has a greater density than fresh water. So the same object will foat higher in salt water than in fresh, and some things will foat in salt water that are too dense to float in fresh water.
there is salt water which makes up the worlds oceans and there is fresh water that make up certain streams and rivers
Mix fresh water and salt water
Because the the sea water contains salt, which increases the density of the water. Therefore, the ships becomes even less dense than the water, making it float higher.
Fresh and salt water are very different for one key reason, fresh water doesn't contain salt and salt water obviously does. There are different flora and fauna in fresh and salt water for this reason.
on fresh salt water