Capture Captian Gentry "Port Royal Crime Wave(hard)"

[Vandelay]

I completed this task today after carrying it for about three weeks! Captured Captain Gentry by sinking a Man O War. FYI that it was NOT a flagship, so that's certainly not a requirement. But I had sunk DOZENS of other large Navy ships during the past few weeks, so perhaps the Man O War is the requirement, even though the text doesn't say so.