Tech Sublight Engines

Although faster than light travel is possible, to do so is very power consuming, expensive and not to mention dangerous. Ships still need sub-lightspeed engines to move around in local space. The most common form of capital ship propulsion is with the use of fusion engines, rocket engines not using chemicals as fuel but fusion material. In most cases this would be hydrogen gas, when not in use it is stored as simply water.

The fusion engines use the fusion material itself as reaction mass for propulsion.