In stock, I used to outshoot corvettes and trawlers all the time, since my marksmanship was better than the computers'.
Black Swans, destroyers, or bigger: AALLLAAAAARRMMM!!!
And that one time with that convoy...
Let's just say that in retrospect, it was a bit stupid of me to think I could outshoot two armed trawlers and two Flowers on the surface, even if it was a night fight....
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Vanvikan, Feb. 2009: ordinary human, KIA, night 4
HMS Thanatus, May 2009: ??? human, KIA, night 7