You could make a british x-craft as well.
You give them 2 "mines."
The weapons are easy. Make a new torpedo with a short eject distance and a VERY slow speed, and short range. Meaning that you get maybe 50-100 yards from your target (say
Takao at anchor near Singapore), then fire the "mines" and they move towards her at the sort of speed that allows you to escape the blast.
tater