Prerequisite: Wisdom of 10+
The Astral Sea is vast and expensive. You have studied logbooks, Astral charts, and guidebooks dealing with the Astral Sea. You can either act as a Helmsman or assist a Helmsman while travelling within the Astral Sea to arrive safely without delay. Make a Survival check with Advantage. A successful DC 10 reduces the travel time by 25% while a successful DC 15 cuts the travel time in half. Failure results in the ship experiencing a random encounter while at sea.