RuB and sh3commander glitches and stuff?

[Bosje]

hey i modded my game up to commander and real uboat war and on the whole i like it a lot. the grammophone broadcasts and all the radio messages are good, so are the new ships. but this is the 3rd or 4th time I see a merchant ship sinking in my immediate vicinity while i am approaching for an attack

is the ship running into mines? is there a fellow kaleun in the area, is she bombed by the luftwaffe while i sit there looking at my map? or is this some weird bug that causes random sinkings. previously i saw 2 fishing boats suddenly die. this is all in shallow waters.

any clue?

oh and what is up with deckgun? it takes about 3 minutes to reload