I feel quite bad about the merchies' cew, having some lifeboats fleeing away form the sinking ship would be nice... it would help that tiny bit of humanity some of us have, anyways... I gues they deserve it for playing on the wrong team
Regarding DD's or BB's crews, after I read a couple of U-boats sinking reports, and how they would shoot with sidearms at anyone trying to get out of the sub, yeah, they pretty much deserve my merciless hunting.