Glad to hear it. As you go DID, pick your battles. Going headlong into combat without a proper strategy and exit plan will get you killed or your valued crew killed. I always try to bring my crew home sound and safe.
PS: acoustic homing torps are indeed the best.
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DID, no cheats, no shortcuts, no non-historic equipment deviations. Boat and crew safety is integral with my immersion style! Follow the historic events during your patrol:
http://www.uboat.net/today.html