Ah, Silent Service 2. That's when I had to guesstimate on bearings and speeds, and getting quite good at it even at ranges upwards of 5000 yards. Nowadays I'm so spoiled with the visual aids of the Silent Hunter games that I feel uncomfortable risking a torpedo on targets more than 2000 yards away.
And how many times I lay still on 300 foot deep with Japanese destroyers circling around my location - and from 300 foot deep I would pick them off, one at a time. Bit of an exploit, using torpedoes that deep, but survival takes precedence. And tonnage.
