The Jupiter class Battlestars were laid down in the early days of the First Cylon War. There were originally twelve built, one representing each of the Twelve Colonies of Kobol. They were heavily engaged in the war, and only three of the original twelve survived to see the armistice signed, ending the war. After the war, the surviving Battlestars remained in service, supplemented by additional ships under construction during the war. The class was continually upgraded and modified over the years, and several were still in service until the Fall of the Twelve Colonies.
Jupiter class Battlestar VariantsEdit
Block 1 ("Jupiter Class")Edit
The original twelve Jupiter class Battlestars were of this type. The earliest examples (Jupiter, Athena, Columbia and Prometheus) were built with more armour, with the lever steadily falling with later vessels. Three of these ships (Prometheus, Athena, and Galactica) survived the war.
Block 1.5 ("Atlantia Class")Edit
The Atlantia and Rycon were command versions of the Jupiter class Battlestars, somewhat larger with extra Viper squadrons and additional firepower to compliment their flag facilities and enhanced command abilities. They served with great distinction during the Cylon War, with the Rycon being lost. Atlantia was decomissioned prior to the launch of the new Nova Class Battlestar of the same name.
Block 2 ("Olduvai Class")Edit
Under construction during the First Cylon War, most off these vessels were not commissioned in time to see any action. Due to cutbacks, only nine of the twenty-four vessels were completed. These vessels served at the heart of the fleet for another 20 years alongside the surviving Block 1 and 1.5 vessels. As the new Mercury and Odin class Battlestars were introduced into the fleet, these vessels were slowly being phased out of service or rebuilt to Block 3 standards. By the time off the attack all had been retired to the reserve fleet or upgraded to Block 3 standards.
Block 3 ("Heracles Class")Edit
The ultimate representation of the Jupiter class, this group was classified as the Heracles class. With advances in FTL technology, the need to retract the flight pods to jump was eliminated, and the added space available was used for additional storage to extend endurance. All six ships in this Block had formally been Block 2s.