Rycon
From Battlestar Wiki, the free, open content Battlestar Galactica encyclopedia and episode guide
Though not specifically seen on screen, the Colonial battlestar Rycon is referred to as Commander Kronus's command (Take the Celestra).
Rycon is destroyed at the battle of the Cosmara Archipelago.
Notes
This ship was also mentioned in the Battlestar Galactica video game, which follows a seperate continuity to the Original or Reimagined series.