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Message: [QUOTE="Incony, post: 452800, member: 177490"] the prop tubes in the stern were encased in at least a semi watertight casing with an access escape hatch into the the generator room... a lower and an upper escape hatch on the bulkhead.. with the stern going upright and that part of the stern still relatively undamaged it is one of the few places left that air could be trapped,. however no one mentions that explosive sounds came after the stern disappeared, but it is possible that water pressure would cause some part of that casing to give way, and the trapped air would make low frequency booming noise if it escaped suddenly through prop shaft frame failure.. its unlikely because the prop shafts had already been pulled apart in the stern fracture, and so seals designed to keep water out of the prop shaft encasing frame, are likely to have already been able to let air out, and it is possible the whole frame was no longer air tight, and so there was no air in there very soon after the stern disappeared... it is conjecture as to what caused any loud noises after the break up.. but low frequency noises in water travel a long way... whales rely on such methods of transmission over great distance in water.. Even if folks heard, or did not hear any loud booms it is quite likely there were many, as metal fractures occurred and moved the water around them suddenly - and caused sound waves in the water,,it is a very good transmitter of sound.. we know much more about sound transmission now technology gives us that knowledge not available or uncertain in 1912.. my premise is that there were such booms.. but just because those who survived, did not hear them.. does not mean there were not any.. science is never certain nor final.. how many times does one hear a sound, and say " did you hear that?" and the person standing next to you says " no i heard nothing... what did you hear ? " :) as a lifting engineer, ive tested all kinds of lifting chains, and lifting rope and bolt joined metal parts to destruction by pulling force, and noise at the point of failure is very very loud, and sudden... and often explosive in consequence, with fragments flying everywhere... broken cables recoil like springs with enough force to cut a person in half,. when one considers all the things that could snap, fracture and be pulled apart and vent air suddenly, it was a noisy time when the titanic sank. [/QUOTE]

Verification: In which year did the Titanic sail?