In '44 most escorts are equipped with it so putting an eel in every escort is not really an option. Oh and unless you cheat use free cam, there is no way to tell which one has and which one doesn't. Last career I had a hell of a time with those things, there is no evasive action against those really, they explode on impact no matter how deep you are... Just run silent, run deep and pray to what ever God you believe in. Good news is they have less then a dozen salvos each of this stuff, so just pray and try to attrite them...
From Das Boot: "The more they shoot the sooner they'll run out." 