[enaceo]

Finding you with the engines-cut is not really that unrealistic.If they use sonar and "ping" you ,you're pretty much Dc'd already.That was pretty much the story with real U-boats.I think that the "uber" DD's are related to crew skill or randomness...since sometimes i've been able to pass right in front of a DD at avout 3 knts and the guy didn't detect me.And once I even entered a port ,was surrounded by 3 dd's coming straight for me ,i thought i was dead but they just passed by me and nothing.

And about that sinking small water-craft with 4 or more shots-it's probably because you're not pacient enough to let it sink or fire in the same place.I have never had to fire more than 3 torpedoes in any small ship to make it sink.I almost always use impact so maybe i hit the "critical spot" more often.The manual also says that your torpedo has a slight chance to make no flooding what-so-ever if you hit directly between 2 compartments and the blast is too small.

Also,about the anti-hummingbird thing...you can keep depth at 1knt i have tested it myself but you cannot change depth.The manual says you need at least 2 knots for that ,but I've never tried changing depth at that speed.