As a navigator, you have an almost supernatural ability to read the weather and the sea, sometimes predicting what it will be like with uncanny accuracy.

You can always tell what the weather will be like within the next hour and always know which way is north as long as you can see the sky. Additionally, you and your crew cannot get lost as long as you have the stars or the sun to guide you.

Additionally, your expertise in charting unknown waters makes you able to tell a real map or seachart from a fake one at a glance. You also instantly know of how old a map or seachart is after studying it briefly, and whether the information it holds is still relevant or not.