Background:

There are two distinct fuel storage systems on board any Starship; the matter storage is generally a single large fuel tank holding a large amount of slush Deuterium - in the case of the Galaxy class there is 62,500 m³ of actual Deuterium within 63,200 m³ of tankage space - the rest being accounted for by internal compartmentalization of the fuel tank. The ship thus carries 12,500 metric tons of fuel, sufficient for a mission period of three years assuming normal use of warp and impulse drive, orbiting of planets, etc.

The antimatter is contained within much smaller pods; the standard Starship antimatter pod is capable of holding 100 m³ of fuel for a total of 3,000 m³ in a Galaxy class Starship. UFED is somewhat reticent about revealing exactly how much antimatter is kept on board its starships, as this would allow threat forces to make detailed estimates of the total output of a ships power systems. It is known that the antimatter used in the Galaxy class is antihydrogen, and that it is kept stored within magnetic fields. In the event of a systems failure, which threatens antimatter containment, the pods can be thrown clear of the ship by emergency systems of considerable reliability.