One thing I noticed when the USN was debating putting females on subs was that the two sides seemed to seperate along generational lines.
Usually the opponents of putting women on submarines seemed to be older, and were the same guys who were against females going on surface ships and had the same tired reasons. The ones who seemed to have no problem with women on submarines were in general the current generation of enlisted and officer.

Just Curious, in the Western surface ships, do woman crew sharing same quarter, same bathroom with mans crew ? If they don’t, then the same partition arrangement has to be make available in the subs.

In the USN no. On the surface ships there are designated male and female berthings.