The Clan Ghost Bear-operated Union-C-class DropShip CGB Sanguine Rime was one of four such DropShips within a convoy of Ghost Bear vessels encountered in the Deep Periphery on the 15th of December 3059 by the Second Star League force designated as Task Force SERPENT. The two groups encountered each other in a system some 120 light years beyond the system the Explorer Corps had named Meribah.
The Ghost Bear convoy was transporting scores of civilian caste members to the Inner Sphere from the Clan Homeworlds and consisted of three WarShips - the Congress-class frigate CGB Shining Claw and two Whirlwind-class destroyers, the CGB Fire Fang and CGB Ursus - and the Invader-class JumpShip CGB Winter Wind. The Sanguine Rime and a sister ship, the CGB Ice Storm, were being transported by the Shining Claw, while two more sister ships, the CGB Arctic Frost and the CGB Blue Kodiak were being transported aboard the Winter Wind.
Despite being outnumbered by the Task Force SERPENT naval flotilla a batchall was acknowledged and responded to by Star Colonel Alonso Gilmour, Captain of the Shining Claw and the officer in overall command of the convoy, and all Ghost Bear vessels were committed to the battle. All four Union-Cs took part in the resulting battle, which was a victory for Task Force SERPENT; while the Winter Wind was permanently disabled and the Ursus destroyed, the Fire Fang surrendered in a repairable state and the Shining Claw surrendered after taking crippling damage. The Task Force SERPENT report indicated that two damaged Union-Cs were recovered, but didn't confirm which two of the four those were by name; it is therefore possible that one was the Sanguine Rime. Also captured intact was the Broadsword-class DropShip CGB Ice Dart, which had been trapped on her docking collar on the Winter Wind and unable to launch during the battle due to the damage inflicted on the Winter Wind in the opening salvoes of the engagement.
- Twilight of the Clans, p. 18-19, "Defender"
- The Hunters, p. 191, "Chapter 22"
- The Hunters, p. 203-207, "Chapter 23"
- The Hunters, p. 191-192, "Chapter 22"
- The Hunters, p. 240, "Chapter 27"