The Crimson Pirate

Having pretended everyone on their own ship was dead, clever Burt Lancaster (title character) and his ex-circus partner Nick Cravat grapple aboard a Spanish ship of the line, surprising a baron and his consort (Leslie Bradley, Dagmar a.k.a. "Dana" Wynter) early in The Crimson Pirate, 1952.

With sidekick Nick Cravat tending to the ship, and rescued Carribean rebel beauty Eva Bartok harassed by his crew (Ewan Roberts, Derek Tansley), Burt Lancaster (title character) plots his next move, aboard a Spanish naval ship he's taken, in The Crimson Pirate, 1952.

Shooting on location around the Isle of Capri in cut-rate post-war Italy, the title character (Burt Lancaster) and his mute sidekick (Nick Cravat) decide to taunt the implacable Spanish imperial soldiers, hailing a Caribbean rebel leader they haven't yet met, in The Crimson Pirate, 1952.

Burt Lancaster is The Crimson Pirate (1952) who gets mixed up in a Caribbean revolution.