[I'm goin' down]

Razark has it exactly right. When you have to time to figure it out how to use it, look at gutted's terrific Solution Solver program. It allows you to view the target as if you were in your boat looking at it through the scope after you input target course and bearing --for any configuration of your boat and the target. Seeing is believing. It confirms Razark's answers. And if you plug in target speed, it will calculate the lead angle for a torpedo shot.

Assuming the target's in the hypos are proceeding on their indicated courses (0 degrees in hypo no. 1 and 270 degrees in hypo no. 2), here are firing solutions per the Solution Solver:

Hypo no. 1. Assume target speed of 10 kts and 46 kt. speed torpedo. Firing bearings: Forward tubes - 347.3 degrees. Aft tubes - 192.3 degrees.

Hypo no. 2. Assume target speed of 10 kts and 46 kt. speed torpedo. Firing bearings: Forward tubes - 0.0 degrees. Aft tubes - 180.0 degrees.

Input the data to the TDC. Sine the target is moving, input Range on the Stadimeter. Turn on the PK. You have the target's speed (10 kts., it course, and it range). The TDC will calculate the gyro angle for the torpedoes. Viola! Antoher one bites the dust, assuming your torpedoes do not run too deep or are duds.