I agree Tarjak, but it would be difficult for any merchant seamen to know exactly how many times a ship is hit when they are abandoning ship and trying to save themselves and others from a sinking ship. However, it does mention in the last sentence that the final plunge might be brought about more rapidly by a "second" torpedo.
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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