[Poohbah]

THat population is certainly higher than Zero. I can name the Narwhal, for one, as a ship which was positively ID'ed as hostile before engaged.

BZZZT!

Narwhal was a SUBMARINE, and was engaged by helicopters, not by fast-movers. And it was known that ANY submarine operating in the immediate vicinity of the British task force was hostile (that maritime exclusion zone thingie again).

[Bulwark]

http://www.naval-history.net/F33weekfive.htm

Narwhal was a trawler. In fact, Narwhal was there to intercept communications. Was engaged by Sea Harriers. Look it up for yourself. Apology accepted in advance.