How to improve one-torpedo sink rate ?

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Originally Posted by Aktungbby

Luck's got nuthin to do with it-Mae West. OOPS I meant "Goodness"!! Silent Otto's technique of rising inside the convoy to do fearful execution is akin really to suicide shooter with a certain time span to wreak havoc before the SWAT approaches.

I am not discussing Kretschmer's genius here. For sure his superb strategical awareness helped him into reducing at maximum any negative factor. But you will admit that a 100% success rate (especially during the early days, when torpedoes were affected by any sort of problem), still required a good dose of luck. I have read many U-boat patrol accounts and, if not the rule, ships requiring two or even three fishes before sinking completely, were quite common.