Why ships creaks when it sinks?

-I hear lot of ships in every movies such as Poseidon and Titanic, when it sinks it will producing metal creaking sound. Why that happen?A ship relies on the load being spread equally over its hull. The center of a ship where cargo is stacked is more strongly braced and reinforced than any other part. This is to resist the torque the bow and stern generate with the rolling motion of waves. When a ship loses buoyancy the hull has taken on water, but in massive amounts. Where previously the hull produced a force acting upwards it now acts as a force downwards, trying to shear metal bulkheads. Every time a wave raises the hull the extra weight of the water on board must be raised too, and its heavy. A room 5m on a side comes in at 125 tonnes or 125,000 kg! Things are going to distort big time.



Trivia; submarines carry torpedoes to sink ships that don't actually hit the ships. They explode under the ship causing a bubble and a fizzing of the water. The ship ends up being supported on its bow and stern and it folds in the middle like a paper sheet. It's weight is used against it.becouse off every thing thats falling off the boat and the preasure of the water u no them big poles that fall down that makes it creak as it breaks the wood and it could be the engin in the boat filled up with water then boom lack off suport
The stress points change... when the boat isn't equally supported...



That puts more stress on the MATERIALS that hold things together.



Wood beams flex and break...



Metal welds break.
pressure simple the deeper you go under water the more pressure there is dip an empty plastic bottle under water and it will start to crush and crack same thing