John P. Cromwell attack technique on order

[Munchausen]

Originally Posted by I'm goin' down

I do not think the fish passed under the keel because they were set 5 feet above its draft.

Prior to the official fix, rule of thumb decreed that a torpedo generally ran ten to eleven feet deeper than its setting.

Besides depth, you need to set a torpedo's speed. What setting did you use (fast?) ... and what speed did you use (46 knots?) for calculating your attack geometry?