I'm a blood thirsty kaleun who sinks everything (by everything, I mean every Allied vessel) in his path!
I don't care if it's a schooner, sloop, trawler, (I may let go of a lifeboat), tanker, liner, non-ICRC hospital ships, pleasure boat, warship, and anything from 1 ton to 100000 tons!
As long it flies the Stars or Stripes or the Union Jack, let me at 'em!