update: launchers have been made for sub fore and aft and PT boat. 2 generic launchers have been made for ships. I put one on the Hunt I and put launchers fore and aft on 3 AI subs. The subs come from somebody, Ref or Sergbuto (not sure who actually). I designed a single mission where there's a wolfpack of 4 subs, 2 Balao class subs, 1 Gato class, and the player's VIIb. The VIIb is at periscope depth. I'm going to try to add a submerged Gato class with periscope extended. The Hunt I is north of the wolfpack patrolling and spots them. He radios for assistance and a lone PT boat south of the wolfpack takes the call...
Hunt I's Torpedo launcher:
the wolfpack:
Hunt I fires a torpedo:
Hunt I's torpedo finds it's mark:
The attacked sub fights back. Torpedo away:
PT boat sneaks up from behind and releases both starboard side torpedoes:
PT boat swerves to right and releases one port side torpedo and swerves back to left (3 torps in water):
The sub being attacked fights back and releases a torpedo against the PT boat:
PT boat's torpedoes miss their mark:
One of the AI subs scores a hit on the Hunt I:
and finally one of the AI subs severely damages the PT boat eventually sinking it by flooding:

AI were still using guns in addition to the torpedoes.
Now that was totally cool