From publisher blurb: Ships need to go, to move through space. Virtually all of them need power as well. Those core parts of almost all space going vessels are covered here. This is part 6.2 of the Starship Kit, although it can be used as a standalone product if required. This volume of the Systems sub-set covers the environmental systems, the ones that help to keep youir crew and sometimes your cargo, alive and in good condition whilst you travel the vast cold void of space. This volume covers the following system you may find on a starship: Atmosphere & Gasses Circuit Breakers Damage Repair Fire Gravity Heating Humidity Inertia Negation Lighting Waste Disposal Water & Other Liquid Storage