If the generic Jumpmaster with torpedoes is a U-boat (as proposed elsewhere) then a list full of them should be a wolf pack, right?
The core of the U-boat is Deadeye + R4 Agromech + Guidance Chips + torpedoes. You focus, use Deadeye to fire the torpedoes, pick up a target lock from R4 Agromech, and then your torpedoes are modified by your target lock and Guidance Chips. With Plasma Torpedoes you get an average of 3.68 damage (plus the plasma effect) and with Proton Torpedoes you get an average of 3.89 damage.
There are a number of options for 33 and 34 point U-Boats. The basics put you at 31 points:
Contracted Scout + Deadeye + R4 Agromech + Guidance Chips + Plasma Torpedoes (31)
Contracted Scout + Deadeye + R4 Agromech + Guidance Chips + Proton Torpedoes + Extra Munitions (34)
Contracted Scout + Deadeye + R4 Agromech + Guidance Chips + Plasma Torpedoes + Feedback Array (33)
Contracted Scout + Deadeye + R4 Agromech + Guidance Chips + Plasma Torpedoes + Feedback Array (33)