Battlecruiser Squadron 491 was a tactical unit of the Solarian League Navy's Frontier Fleet.
In April 1922 PD, the main force of the squadron was destroyed in the Saltash System by the Royal Manticoran Navy. The casualties included the commanding officer at the time, Vice Admiral Oxana Dubroskaya. (HH14)
- Captain Tucker Kiernan – Chief of Staff
- Captain Kelvin Diadoro – Operations Officer
- Commander Gervasio Urbanowicz – Communications Officer
- SLNS Vanquisher, flagship – CO Captain Maksymilian Johnson
- SLNS Inexorable – CO Captain Ham Seung Jee
- SLNS Paladin – CO Captain Borden McGillicuddy
- SLNS Success – CO Captain Meridiana Quinquilleros
- ↑ Success and Paladin were Flight V units, with the old SL-11-b launcher, 45 second launch cycle, Vanquisher and Inexorable had the SL-13 launcher, 35 seconds launch cycle.