Fuel

Both FTL and sublight travel require fuel. Fuel can be hydrogen, antimatter, or even old-style rocket fuel. As a general guideline the fuel capacity of a starship (in fuel units), unless otherwise noted in its stat block, is the cube of its ship class.

A fuel unit buys one parsec of travel. So a class IV scout has a fuel capacity of 64 fuel units before it needs to refuel, and a class XI cruiser can travel 1331 parsecs – about one twentieth of the way across the galaxy.

The cost of fuel is typically 10 credits per unit, although it can vary from place to place. Subluminal fuel is recorded separately; it works the same way but is measured in AU rather than parsecs. It may be a different type of fuel to the FTL fuel.