If it starts with a C, the word you're looking for is COMMANDEER, defined as (a) to seize for military purposes; (b) to take arbitrary or forcible possession of.
In the movie Pirates of the Caribbean: The Curse of the Black Pearl, Jack Sparrow says this to Will Turner as they are sailing into Isla de Muerta in hopes of rescuing Elizabeth:
"You know, for having such a bleak outlook on pirates you are well on your way to becoming one; sprung a man from jail, commandeered a ship of the fleet, sailed with a buccaneer crew out of Tortuga. And you're completely obsessed with treasure."
If you are looking to dress up like a pirate for the next Halloween or a costume party, you might want to learn some pirate terms and phrases so that you can really get into character.
See Pirate Terms and Phrases from YourDictionary.com and A Pirate's Glossary of Terms from PirateGlossary.com.