The Station Builder Tug is a maneuverable, dockable craft. Once attached to the station, it can be used to move or re-position the station from a central point. Due to its very large fuel capacity, it is often used to position station parts and attach them to stations, thus its name.
It uses 6 power, and must be docked to a station to allow its 2 batteries to recharge. The batteries will only recharge when connected to a larger electrical output, such as stations, or resupplied with batteries.