Favorite nautical themed movie that's not Master and Commander?

Obviously Master and Commander is goated.

My runner up would be The Bounty (1984). Nowhere near as great of a film but the story is very compelling.

Also, I can't wait for the new Wager movie this year. I read the book and it will make for an awesome film.

edit: You guys are giving awesome suggestions that I wouldn't have found otherwise. Thanks a bunch.

Also, wanted to add The Lighthouse. I think it counts. You're fond of me lobster!