I'm gonna share this. Gibraltar mission. I got spotted by British Aircraft. Crash dived, no damage. But suddenly the entire area got alerted, and i got hunted down by three destroyers, who were pinging me with ASDIC the entire time. Shallow waters max depth at 110m. I tried everything to escape (lasted 40min) with classic evasive maneuvres like, going flank speed while they drop depth charges. Then switching to Silent Running. Changing depth and course.
But i got sunk. It was hopeless.
My first encounter with destroyers in Silent Hunter 3. What a hell !