Navigation, Phlogiston (Proficiency)

==The Complete Spacefarer's Handbook==
This is the art of navigating from one sphere to another, a separate skill from navigating within a single crystal sphere. It is a difficult and risky activity, but it is sometimes necessary when an planetary locator is not available.
A spelljamming ship that enters the Flow normally moves randomly, arriving at some other crystal sphere within 10–100 days. With a successful proficiency check from the ship's navigator, the ship arrives at the chosen destination within that time. Of course, the destination must be one that is normally reachable; if there is no path from the current sphere to the desired one, a successful check on this proficiency will not create one.
If the proficiency check is failed, the ship arrives at a random sphere. (The DM should make the proficiency roll so that the player does not know if he succeeded or not.) On a natural 20, the ship drifts in the phlogiston for 20–200 days; such ships may be in grave danger of exhausting their air supply before returning to a random crystal sphere.
Category:The Complete Spacefarer's Handbook Proficiencies