Oh Hell, why not just hire a dozen prostitutes and put them in special quarters on a sub. That would satisfy everyone but NOW.
If you put women prostitutes on subs then you would have the same nut jobs demanding that homosexals be quartered on submarines. I know things have changed, but when I was in the Navy (Korean conflict)there was a problem with space on ships.
The smaller the ship, the more cramped the quarters. Submarines were probably the worst in that regard. I know that there are bigger subs now, but space is still a problem. There is a fair number of pregnancies that have resulted from women being on sea duty. Forget the P.C. garbage. It weakens our miltary.