From personal experience, having women on subs isn’t really a major issue (the antics of drunken submariners ashore in foreign ports is a far bigger issue and that isn’t even all that big either).
Hell, we have USN personnel serving on our subs and even they admit that women on subs isn’t a major issue.
Tell us Dundee, how much time you have spent aboard submarines?
Or is all of your experience gained from watching Star Trek?