Is this (
http://subsim.com/radioroom/showthread.php?t=164252) what you're looking for? It includes a lot of animated shore traffic, lots of boats, sub pens, etc. etc. etc.
It is enabled on top of the
GWX super-mod, or comes already included in the
War Aces Campaign super mod (
http://www.subsim.com/radioroom/showthread.php?t=87436). I believe it's also included in the
Living Silent Hunter Super-mod mentioned above.
Welcome and take care.