Why are the ships weighing as much as 45000 ton able to float in water?

Question

Why are the ships weighing as much as 45000 ton able to float in water?

Answer 1

Again and again...This question appears here every week.

Please try to use search next time.

Ships are able to float because of thing called displacement.

In fluid mechanics, displacement occurs when an object is immersed in a fluid, pushing it out of the way and taking its place, so that it can be weighed.

An object that sinks also displaces an amount of fluid equal to the object's volume. Thus buoyancy is expressed by Archimedes' Principle which states that when this happens, the weight of the object is reduced by its volume times the density of the fluid. If the weight of the object is less than this quantity, it will float, if more it will sink. The amount of fluid displaced is directly related (via Archimedes' Principle) to its weight.

Displacement is used as a measure of the weight of ships (see: Hull (watercraft), load line and Stability conditions (watercraft). The displacement of a vessel is equal to the weight of water it displaces when afloat.

Vessels such as naval ships and icebreakers are often measured by their displacements. The unit of measure can be long tons or metric tons depending on the country of origin. The ship can be measured in light condition, fully loaded, or normal (usually fully loaded, but with about two-thirds of fuel and unconsumables). For official purposes, the Washington Naval Treaty introduced the standard displacement, which was the displacement fully loaded but with no fuel or reserve feed water.

Answer 2

There is a large surface area on the bottom of the boat which causes water displacement and ballast causes the ship to stay upright and balanced in the water.  It is kind of like putting a bowl into the sink, until you tip it and allow the water inside it will float even though it is heavier than the water.

Answer 3

Laws of Physics. Go back to school.

Answer 4

It is possible because of it's round shae from the bottom .

Answer 5

Because they weigh less than the water they displace.  The 45.000 tons of water has less volume.

Answer 6

Please attend some physics classes

Answer 7

Its called the Archimedes Principle:

According to history he was in the bath one day when he discovered the principle of buoyancy which is the reason why huge Greek ships weighing thousands of pounds could float on water. He noticed that as he lowered himself into the bath, the water displaced by his body overflowed the sides and he realized that there was a relationship between his weight and the volume of water displaced.

Answer 8

because they displace more water by volume than they weigh.  In other words, if a ship weighs 10 tons, it must take up more than 10 tons of water (space in the water) to float.

Answer 9

Actually, boats and ships float because they are buoyant.  An object floating in water is forced upward by a force equal to the weight of the water it displaces.  (Archimedes's Principle of Buoyancy)

Thus if the ship displaces 47,000 tons and weighs 45,000 tons, it will be forced upward by a net force of 2,000 tons.

For much more information, with pictures and diagrams, try an internet search on "Archimedes's principle" or "buoyancy."