got a photo of the only submarine I ever chased as a Sonar Tech in the navy
although Wikipedia will tell you the Germans didn't deploy their Type 209 diesel/electrics, this is the German Navy & I was told to run range predictions for a "Type 209 d/e".
My Skipper, my Chief and my Sonar Supervisor all say "German Type 209 d/e". I don't argue with them, you shouldn't either
CG & a DD banged away with their hull-mounted active sonar, while the AW (Aviation ASW Operator, back in my day) & I easily tracked her on passive sonobuoys (when the screech of the Tyco's & TinCan's 53B's weren't washing out my entire display), then even MORE EASILY tracked her with active sonobuoys
then she surfaced, we rendered honors, went on our merry ways.
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