There is a small impeller at the nose of the torp which 'arms' the torp after a specific number of turns; it withdraws a safety device. Therefore it seems reasonable that the speed of the torp affects the rate at which the arming takes place, the slower the torp the longer to do the required number of turns (with an allowance for impeller efficiency).
Last edited by Phobus; 01-24-08 at 11:47 AM.
Reason: Error of speech
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