@tomagabriel
sub interior:
when ohio gets a hole made by gun blasts, it does show the sub's interior as empty shell. probably something to look into... to give a sense of some compartment(s ) flooded.
foam:
my PC rig doesn't have any issues (well till now) regarding crunching high quality graphs of any game currently on the market, but I might be the expection...
what I would suggest is perhaps to use the same foam effects that SH4 BBs use... the foam graph on US SH4 BBs could expand sideways and probably give the same visual effect of large foam waves caused by sub's water displacment. It probably needs to be 1.5 or 2 times the size of the BBs since water displacement of nuke subs is greater than surface boats.
ok nothing great as a foam visual graph but probably more acceptable for low/medium spec PC rigs. I can't remeber of a specific BB nor currently have a picture of it but let me try a couple and I'll add the picture as example.
damage:
It is a bit hard to get some equipment damage, my ohio has been hit by countless depth charges while at periscope depth and no internal/hull damage. Only when I surfaced right in the middle of two BBs got a few blasts on each side and "voila" 14% hull damage and several holes on each side
Cheers