[Anthony W.]

Reposition from behind and to the side - fire one with a left offset, and immediately launch another with a right offset. If she dodges one, she runs into the other

Then again, a Mk.10 is a slow torpedo...

And sinking that (sub chaser I'm thinking was the word you wanted) with only 5 HE rounds was a bit fast but it depends on where you hit.

Try TMO 2.1 and RSRD - makes the whole thing a lot more real - but prepare for hours of depth charge attacks and destroyers that will stop at nothing to send you to Davey Jone's Locker

And your torpedoes won't go off as often. Lots of duds just like in real life. And they do less damage.