Behavior of Underwater Non-Contact Explosions

[tater]

http://www.ibiblio.org/hyperwar/USN/rep ... 58-15.html

Likely posted before, but cool none the less.

[Ducimus]

never seen that one before. I'll have to take my time and read this one carefully.

Nice find!

[tater]

Actually, there is much more up a tick:

http://www.ibiblio.org/hyperwar/USN/rep/WDR/WDR58/

"Depth Charge, Bomb, Mine, Torpedo and Gunfire Damage Including Losses in Action 7 December 1941 to 15 August 1945"

6-1. A thorough search of available records indicates that throughout the entire war there were but fifteen reported cases excluding losses, in which permanent deformation of the pressure hull was sustained by U.S. submarines as the result of non-contact underwater explosions of bombs and/or depth charges. In none of these fifteen cases was the pressure hull ruptured or torn nor is there any instance on record where a U.S. submarine has survived pressure hull rupture which occurred through war damage while the vessel was submerged.1 This is to be expected since rupture of the pressure hull of a submerged submarine should normally be lethal inasmuch as the flooding of one or more main compartments will render submerged control impossible, and the boat must then either surface, where it probably would be destroyed by enemy action,2 or must proceed to the bottom. Even assuming the bottom to be at a depth less than the collapse depth of the pressure hull and compartment bulkheads, experience shows that, under war conditions, self-salvage of the boat or ultimate escape and survival of personnel is quite unlikely.3

[tater]

As stated previously, no U.S. submarines are known to have survived war damage which breached their pressure hulls while submerged. It should be noted that the range at which a given weight of explosive will cause permanent deformation only of a submarine pressure hull is but slightly greater than the range at which the same weight of explosive will cause rupture or complete failure of the hull to occur. The distance increment between the range at which permanent deformation only will occur, and that which will cause complete destruction, considerably decreases as the submergence depth of a submarine increases.

[Ducimus]

Actually, there is much more up a tick:

Doh! I've seen that page before, i just completely forgot about it.