Sure, I'll bite: woman and her fiance are captured on the high seas and held for ransom. Captain tries to seduce the woman, she resists, captain get's pissed and throws her to the crew to break her - after a while later, she decides the life of a pirate might have it's upside. When a Naval ship finds them, she takes charge, organizes a victory and takes over command of the ship as the new captain.
I dunno what happens to the fiance, ransomed off perhaps?
A pirate ship is commanded by a lesbian captain with her lover as First Mate. They capture a ship for plunder and to ransom the passengers. The captain falls for the posh girl and wants to keep her, but the First Mate and the crew want to sell her for ransom. The crew want the ransom money. The First Mate wants the captain to herself and torments the posh girl. There’s a failed mutiny and the First Mate is sold to a local female slave trader who hates the First Mate. There is then a huge amount of abuse and her holes take quite a battering from just about everyone on the island. The story ends with the pirate ship returning with more captives. The posh girl has become the captain’s lover, but she outfoxes the captain and the slave trader, imprisoning them in the jail. She then releases the First Mate and reveals that she’s a submissive who fell in love with the rough First Mate and wants to be her lover. They sail off, together, into the sunset.
Throw in a pony girl race, a couple of lesbian twin sisters and you have yourself a story. How does that sound?
Historical pirates are much more fun and more romantic. No one is going to get Johnny Depp and Keira Knightley to dress as Somalian gangsters, and if they did I don't think they'll make much money. Stick to the traditional story. Anything else is 'political'