Just dump some of your crew and load up on seamen and after a couple of patrols they'll have thier stats up and might even get u some usefull abilities.
This system of dumping crew after every patrol is working for me at this point so you can load up on engine specialist and cruise around at 30+ knots or if you can get your hands on 2 rhinestone torp specialist and 3 fast torp loaders with increased torp speed you can have torps that are as fast as an "exocet" ,hit like an H-bomb, and reload faster than u can shoot em.
After this tour of duty I'm going to collect/recruit nothing but useless passives like 20 medics and just play the game.
