>>Is it not possible that the true answer to the sinking of the Titanic could lie in the shell of a torpedo sitting inside the sunken Titanic?<<
Nope. None whatever. While tensions were high in Europe at the time, they weren't
that bad and even if they had been, the U-boats Germany had at the time just didn't have quite that range and endurance.
>>Many survivors have testified that they heard explosions AFTER the collision.<<
If you take the time to check the
The Inquiry Transcripts Themselves you'll find that the "expolsions" correspond to the approximate time of the break up...which would have been a very noisy event....and the time after the stern section slipped below the surface and went deep enough where any air filled spaces would have imploded under the pressure. This is also a noisy event.
>>Personally, I don't believe the scratch against the iceberg was enough to cause such large holes in the ship to make it sink.<<
It wasn't a trivial scratch by any stretch and much of what we described is consistant with a grounding/allision event as described in
The Grounding of The Titanic by David G. Brown and Parks Stephenson.
You might want to take note that at no time did
anybody mention an explosion at the time the collision/allision with the iceberg occured. Torpedos do indeed make loud noises, and none such were noted at the time the ship suffered the fatal damage.