The Selene-class Combat Supply Ship is a specialised supply ship intended to accompany battlegroups on missions. The Combat Supply ship carries all the necessary materials to supply a number of ships simultaneously, such as water, hydrogen, reactor fuel, jet fuel, food and munitions. It can carry many thousands of tons of these materials, and millions of gallons of liquid material, in a number of self sealing tanks. The ship carries these in centrally aligned cavernous bays, which are connected to numerous docking bays and launch bays and are connected by an internal conveyor system. The ship is designed in such a way that it can rearm, refuel and re-equip four ships simultaneously, by docking with two and transporting supplies to the others via shuttles, allowing it to resupply them in ju