"Functionally elegant" as the builders of the A-10 would say...:hmm:
Oh! I know! It's an antisubmarine vessel in disguise. Any Kilo captain who tries for a periscope attack on the big, inviting merchant contact on his sonar would go away blinded for life. Them are tricky bastards in the merchant fleet.
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Vanvikan, Feb. 2009: ordinary human, KIA, night 4
HMS Thanatus, May 2009: ??? human, KIA, night 7