Welcome aboard mates! Enjoy SUBSIM!
If you have a Facebook account, you can join us:
https://www.facebook.com/groups/25990473292/
Regarding DW: Do you use default game or modded? First, put all the options in auto crew, 5 knots speed, sonar array full out, go to sonar station and look and shadow those contacts (green or red cascades) in the passive sonar. See in the map if you have enemy contacts, see if you have a good solution in TMA, and launch your weapons (torpedoes or missiles). Practice with this. It is the same as SubCommand if you play subs.
And read the dedicated forum for DW.
Regards.
Fitzcarraldo