Even today in 2013, for a women to be in command of a naval combatant is rare.
In sheer numbers, maybe, but according to the latest USN info I can find women command 11 combatants, which if you exclude submarines (not open to women till last year) comes out to about 7% of the active fleet. Which happens to be the same percentage as female unrestricted line officers in the navy.
http://www.public.navy.mil/bupers-n...ensPolicy/Pages/NavyWomenFactsStatistics.aspx
http://www.public.navy.mil/bupers-n...omen in the Navy Fact Sheet_March 2013(2).pdf