Did it look like the DD in these screenshots:
http://www.subsim.com/radioroom/showthread.php?t=137274
I had trouble with this one, don't think it's a River Class (second funnel slightly shorter on the one in the screenshots) and came to the conclusion it was an A or B Class destroyer, but not 100% certain.
Nemo
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"I'm afraid there is no disguising the fact that King's obsession with the Pacific and the Battle of Washington cost us dear in the Battle of the Atlantic".
Sir John Slessor GCB, DSO, MC, DL
AOC-in-C Coastal Command RAF
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