Be careful in the coastal waters of
FotRSU around Batavia - Penang mid-43 to late 44 if you're in a US sub... or das schnellboot might getcha!... I cannot recall its lineage off the top of my head... I'll keep looking though.
- Edit: Found it! It is from Sergbuto.
Do a web "Search" on "site:subsim.com/radioroom pt-109", and pick your thread to start in to read about the various kit-bashings some folks have done on the PT-109 beta mod. In FotRSU, CapnScurvy got "buckets" for the 50 cal guns, and even threw together a double-barrel stand-in. More tweaking could be done on that also...