The Nebulon Frigate Line was a series of several different variants of the popular EF76 Nebulon-B Escort Frigate introduced by the Alliance Fleet during the course of the Galactic Civil War. Due to several factors with the basic hull of the Escort Frigate Alliance Engineers saw it very easy to modify it to suit their needs. Like Medical Ships, Support Ships, and Scout Ships. The majority of the modifications would be around the central spar of the ship which could be easily built around adding hangers, cargo bays, medical bays, and several other notable additions to the design of the basic Escort Frigate. These ships would become a mainstay in the Alliance Fleet and would make up the majority of the fleet alongside CR90 Corvettes, DP20 Frigates, and Mon Calamari Cruisers.