The MC80 Liberty type Star Cruiser was an early type of Mon Calamari Star Cruiser put into service for the Alliance of Nations. Like most Mon Calamari designs, each vessel was individually unique, which was frustrating for technicians. As with other Calamari designs, all warships in this group were standardized as much as possible to aid non-Calamari crewmembers, something the artistic Mon Calamari accepted begrudgingly. A common variant of the MC80 Star Cruiser line was exemplified by the cruiser Liberty. It had an array of nine engines, divided into three different sizes, located at the stern. A large wing-shaped superstructure was affixed to the main hull on either side, containing weapons pods and tractor beam arrays.[8] Some MC80 cruisers had their wing sections shortened and were equipped with an additional thruster.