Charter

Charters create maps of the ocean and landscape. There are four subsets:

Water, Land, Weather, and Stars.

Landscapes is the most "steady" to record as land isn't going anywhere.

Weather is chaotic at best.

Water is dedicated to charting ocean currents and locating and analyzing areas ships wreck most often. Can cross over subsets, but not very common without upgrading to a navigator.

Star Charters are especially skilled navigators and highly prized among sailors. They're an extremely valuable resource to the herd.