why the ships are on the water if it are very heavy?

Answer 1

uh, because of their design. the ship, even though it weighs so much, is designed to displace more water by weight and volume than the ship itself has.

-eagle

Answer 2

The weight of the ship and all it contents pushes aside an equal weight of water. In naval terms this phenomenon is called displacement. It is also sometimes referred to as Archimedes' principle. The ship and contents are (usually) less dense than water, so the volume of water displaced has to be smaller than the volume of the ship. When in equilibrium, the weight of the ship is balanced with the buoyant force exerted by the ocean. This buoyant force is expressed through water. This is why the ship doesn't sink: it will only submerge far enough down in the water that the volume of the ship below the waterline is equal to the volume of water displaced.

Think of the movie Titanic. Before the Titanic hit the iceberg, it was steaming along, with part of the ship underwater and part above. The underwater part hit the berg, the hull plates cracked, and water started pouring in. As water flowed in, the ship grew heavier. As the ship grew heavier, the volume of water displaced grew, and the volume of the ship that was underwater grew too. In other words, more and more of the ship sank below the waterline. Eventually, for reasons having more to do with poor design* than anything else, the weight of Titanic plus the water flooding inside her exceeded the buoyant force holding her up and she sank.

*Because the ship's watertight bulkheads didn't extend all the way to the main deck, the incoming water had no effective barrier limiting how much could come on board. Once the water filled to the top of the first few compartments, the ship had submerged enough that the water flowed out the top of them, along the next deck up and then flowed down into the next compartment back and started filling it up, adding more weight to the ship, pushing it down even further into the sea, and so on, and so on. Eventually, the combined weight of ship and water in the forward compartments pushed the bow so far down that the stern rose out of the sea like a giant see-saw. The stress on the ship's keel exceeded design limits and the ship broke into two pieces, ruining what was left of watertight integrity and she went to the bottom.

Answer 3

The most important is the buoyance.

If the combined density of the ship is still lighter than the water it displayed, the the subject will float.

Consider why human can float on water. It is because human's density ( weight/volume) is less than water itself. So we can float.

Ships are big and heavy but the volume of water it display is very large also.

Answer 4

They may be heavy... but the air that's inside of them isn't.

This is why Archimedes made such a fool of himself when he shouted "Eureka" and ran his naked butt out of the bath-house. He understood, as he was lowering himself for a soak after a hard day's cogitating, that objects that are less dense than the fluid they are immersed in, will tend to rise.

This is called the Law of Buoyancy.

The trick to a ship, no matter how big or heavy, is that it manages to be less dense overall than the water it is sailing on. This is not hard to do: water is some 1,000 times denser than air.

Does this answer your question?

Answer 5

The water that is trying to fill the hole that the ship is sitting in is exactly the same weight as the ship.
The correct term is displacement - the water that is displaced weighs exactly the same as the ship.

Answer 6

Any object that displaces a greater weight of water than it weighs itself will float, no matter how heavy it is. If you fill the ship with concrete, it will eventually get heaver than the volume of water it displaces and it will sink. This effect is called bouyancy

Answer 7

Steel ships float because the weight of the volume of water that they displace is greater than the weight of the ship itself.

Answer 8

ship's body has been made such as its density is smaller than water. inside the body is filled with air and this cause the density of ship lawer than water then ship are on the water.

Answer 9

Archimedes' principle states that an object submersed in a fluid will be buoyed up with a force equal to the weight of the fluid displaced.

Answer 10

it's because of bouyance& newton's third law.
the ship experiences upthrust from the water in upward direction........
thus it floats.the dimensions also play a measure part.