Lol - you know there was a 80's porn movie kinda sorta along this theme called "Sex Boat". It was a women's only cruise both passengers and crew - of course they were all hot. Two guys sneak aboard pretending to be women and tap a couple of women who are glad for male companionship. Then the "pirates" show up. There are some rape scenes - mostly that become pretty consensual after the first 20 seconds. And if I'm not mistaken there may have been a few women who sexually attacked pirates. It was a long time ago...lol
http://www.imdb.com/title/tt0083055/