Captain (Marine Rank), One Piece Wiki

For the person in charge of a pirate crew, see Pirate Captain. Captain is the sixth highest rank in the Marines. The rank of a marine officer who commands a ship would not necessarily be "Captain". It may be higher (up to Fleet Admiral), or lower on small ships. By naval custom, any officer who is below the rank of Captain and commands a ship is addressed as "captain" while aboard that ship. The ship's captain also may be referred to as the Skipper. See also the associated category: Marine Capta

One Piece Marine Ranks by TheBeautyofViolence on DeviantArt

Ratel, One Piece Wiki

One Piece: Complete list of all the Marine ranks

Marine's, Wiki

Bounties, One Piece Wiki

Bastille, One Piece Wiki

One Piece Marine ranks hierarchy explained

One Piece Wiki: Ultimate Guide To Popular Manga And Anime Series

Who is X Drake in One Piece?

One Piece (season 1) - Wikipedia

Admiral (Fleet Captain), One Piece Wiki

Hardy, One Piece Wiki

Marine Ranks, One Piece Wiki