Corrected entry: When Morgan and her Slave/New Boyfriend are escaping from the burning ship, which is going to explode any second ... they emerge onto the deck, run up a flight of stairs, cross the deck to the stern rail, look about themselves, then dive overboard. The railings are about a metre away from the hatch they emerge from in the first place - why not just jump overboard there?
Correction: They were looking for an alternative to jumping. They didn't find one.
Corrected entry: In the scene immediately after Gena Davis receives a wound, she drinks some whiskey, or rum, and then pours some of the drink on her wound as an antiseptic. The understanding of germs and infection didn't occur until Pasteur's discoveries in the mid 1800's, well after the time period of this film.
Correction: True however they did understand keeping a wound clean. It was well known that the wadding from a pistol shot many times carried with the ball into the wound especially if done at close range. Festering would occur and that is why they later wished to cauterize it.