It may have been a DC attack that brought this u-boat to the surface, but the damage to the conning tower might have been inflicted by the escorts opening fire with every weapon available to them. This was mainly done to prevent the u-boat crew manning the deck gun as well as trying to stop the crew abandoning the u-boat and scuttling it so that it could be captured.
Nemo
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"I'm afraid there is no disguising the fact that King's obsession with the Pacific and the Battle of Washington cost us dear in the Battle of the Atlantic".
Sir John Slessor GCB, DSO, MC, DL
AOC-in-C Coastal Command RAF
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