Navigator

"Orders, sir!" "I'll have my navigator to the helm."

- Theodore Groves and Hector Barbossa

A navigator was the person on board a ship responsible for its navigation. The primary responsibility of the navigator was to be aware of ship position at all times. Other responsibilities include planning the journey, advising the captain or commander of estimated timing to destinations while en route, and ensuring hazards were avoided.

Notable navigators

 * Joshamee Gibbs (HMS Providence)

Source

 * Pirates of the Caribbean (film series)