One thing is an c2/3 or tanker out of the fog BUT I did look behind and an destroyer

at flank speed behind me towards me (no pic) I got heavy dmg but I was saved by the ocean floor at 110m or so. I got floding and stuff and I did manage (after a while) to get the boat upp to surface and 5% compressed air left. If not THAT is a close call then I don't know what...