Как по Английски будет указатель курса

noun

A person who goes ahead and discovers or shows others a path or way.

Примеры использования:

Is she seen as a bit of a - well, as you said, a trailblazer, a pathfinder for women, not just in a…

proper noun

An unmanned american spacecraft which landed on mars in 1997, deploying a small robotic rover (sojourner) to explore the surface and examine the rocks.