Welcome aboard! Enjoy SUBSIM! :

If you have a Facebook account, you can join us:
https://www.facebook.com/groups/25990473292/
If you like Uboats, you have Wolfpack (mainly for multiplaying), UBOAT (a new game, with bugs to be corrected), SH5, preferibly with TWoS super-combination of mods. SH3 with the classic GWX, LSH3 2015 and WAC (recommended). For the PTO and pig boats/fleet boats you have the awesome FOTRSU, the most actualized mod for SH4. For modern (or relatively modern) subs, you have Cold Waters, The oldie Dangerous Waters continue to works, but with some difficulties, in W10.
Regards.
Fitzcarraldo