The water pressure in the depths of the ocean
There are legends that the ships sunk in the ocean do not lie on the bottom, but hang at some depth, traveling together with ocean currents. Is this fair? The water pressure in the depths of the ocean really reaches enormous values. At a depth of 10 m, water is pressurized with a force of 10H per 1 cm2 immersed body, at a depth of 100 m - 0,1 kN, 1000 m - 1 kN, etc. At the depth of the Mariana Trench - 11,5 km - the water pressure reaches almost 120 MPa. At such a pressure in the depths of the ocean, pieces of wood after extraction to the surface were so compressed that they were drowned in water, and firmly clogged bottles were crushed by water pressure. There is an opinion that it is impossible to shoot a firearm, dropped to such a depth.
It can be assumed that the monstrous pressure of water in the depths of the ocean will so compact the water that ships and other heavy objects will hang in it, and will not sink. But water, like all liquids, can not be compressed much. If the water is compressed to such a density that iron would float in it, it would be necessary to compact it 8 times. Meanwhile, for sealing only twice, that is, reducing the volume by half, requires a pressure of 1100 MPa. This corresponds to a depth of 110 km, which is not real!
In the deepest part of the ocean, water is compacted by 5%. This almost can not affect the conditions of floating various bodies in it, especially since solid objects immersed in such water are also subjected to this pressure and, therefore, also compacted. Therefore, we can conclude that the sunken ships are resting on the ocean floor. There is no chance even for keel-turned up ships, despite the fact that in some areas of the ship the air will be tightly locked. Is it possible that some of them never reach the bottom, remaining hanging in the dark depths of the ocean? It would have been enough to push a ship so that it could be out of balance, turned over, filled with water and made to fall to the bottom. But where to take a push in the depths of the ocean, where there is always peace and tranquility, and where even the echoes of storms do not penetrate?
All of these arguments are based on a physical error. Tilted keel up the ship does not begin to sink, but will remain on the surface of the water. It can not be half way between the level of the ocean and its bottom.
In view of the fact that such a phenomenon has never been observed or verified with shipwrecks, a serious scientist must leave the slightest doubt whatever. Especially since many seamen share the opinion of the ship that is hanging. The fact is that ships often have sealed compartments. And if these compartments are not damaged and there is air left in them, then its water pressure in the depths of the ocean does not shrink, and it remains the same volume. Therefore, the ship, having a total density above the surface water density of the oceans (almost always less dense - due to both higher temperature and lower salinity), begins to submerge, and when it reaches the cold (in the depths of the oceans the temperature is +40 C, with its maximum density) and its salt layers, hangs indefinitely...
It turns out that when we crash the vessel on the ship's side, when it is launched onto the water, we, therefore, call its fate. She steadily leads him through the seas and oceans, where he is destined to visit. And if it happens that the ship sinks - this is not the end. The pressure of water in the depths of the ocean can give rise to a new legend about wandering dangling wrecks!
