Navigator

A navigator is the person onboard a ship responsible for the navigation of the vessel. The navigator's responsibilities include planning the journey, advising the captain (or pilot) while en route, and ensuring that hazards or obstacles are avoided.

Navigators in One Piece
In One Piece, navigators are the most crucial members of a ship, especially when traveling the Grand Line. Whenever a member of a crew, be it pirates or marines, is seen with a Log Post tied to their wrists, their position as their respective crew's navigator becomes immediately evident, since Log Posts are one of the most crucial tools of a navigator. A ship is only as good as the navigator that directs it. Otherwise, the ship will be damaged or shipwrecked by unforeseen obstacles.

Unlike other members of crews, such as captains, doctors or chefs, navigators aren't formally introduced. Characters that are classified as navigators are rare, despite how important they are to the ship. Currently, the most well known, and arguably the best navigator in the One Piece world is Nami.

Known Navigators

 * Nami
 * Eddy
 * Laffite