The stupid save engine doesn't save whether a ship has contact with you or not, so when i re-loaded that game the Clemson happily Flanked back toward the convoy and ate two of my torpedos. Surfaced and sank three medium cargo ships and heavily wounded another before a corvette got a little too close with his salvos. Crash dove and ran away with two Destroyers, four cargo vessels, and a trawler in the bag.