I think U-Schultz has some valid points there, which should be take into consideration, but...
Due to the fact that most damage is caused by DC, the blast could either bend, rip apart or dislodge the (lets say) diveplane. Internal damage in this case would be from vibration and shock only and insignificant.
Totally agree that external components (dive planes, rudder, prop) should be fixed on the surface.
Cheers!
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