i've been guilty of going into a convoy in "arcade mode"
just to blow stuff up and in real life i wouldnt get close but in the game i took out half the convoy
also, keep this a secret
but if you surface while rubbing flat parallel to the side of a disabled battleship the DD wont fire at you and the BB guns cant reach you so you can shoot all your ammo without getting return fire. just have to not let it drift apart or at about 2m distance the BB gun CAN reach you
you never know what level of realism or being realistic people have in mind when they ask questions sometimes so i try to add a note about RL in my answers sometimes