noun
navigator
NAV-ih-gay-ter/ˈnævɪɡeɪtər/
A person or device that determines a route of travel.
The navigator uses a compass and chart to guide the ship.

Etymology
The sailing verb with a person-forming ending named a sailor, especially someone directing a ship’s course. The selected meaning retains that directing role while applying it to journeys more generally.
In context
the coast here is a navigator's nightmare rocks shoals and vicious currents safety first to help keep the yangming south safe local navigation pilot larry wilson is sent aboard
More examples
- On road trips, I drive and my sister acts as navigator.
- The car's navigator suggests a faster route to the airport.
- Aircraft navigators check their position throughout the flight.
Forms
navigator · navigators
navigate verb — To plan and follow a route.
navigation noun — The process of determining and following routes.