In 1920 PD, the ship was sent to the Talbott Cluster as part of the Star Kingdom of Manticore's efforts to bring stability to the region. The Vigilant was in orbit of Flax, when the heavy cruiser HMS Hexapuma entered the cluster.
In early 1921 PD, Captain Aivars Terekhov made her part of his improvised squadron to investigate the secret military build-up in the Monica System. When Vigilant's commanding officer, Commander Eleanor Hope, refused to participate in the action, she was relieved of command and her first officer, Lieutenant Commander Osborne Diamond, took over as CO of Vigilant. Commander Hope returned to the Spindle System aboard a dispatch boat.
Vigilant was heavily damaged in the Battle of Monica, taking a direct hit at the bridge that killed Commander Diamond and the entire bridge crew. Lieutenant Gainsworthy, the Third Engineer and senior surviving officer, assumed command and made contact with Hexapuma. Although Gainsworthy stated he and his crew could save the Vigilant, Terekhov ordered him to set the scuttling charges and abandon ship. Gainsworthy executed these orders; Vigilant was destroyed, but her name added to the List of Honor along with those of all ships in her squadron. (SI1)
Known crewmembers Edit
- Commander Eleanor Hope – Commanding Officer
- Lieutenant Commander Osborne Diamond – Executive Officer, acting CO
- Lieutenant Commander Gunda Kienholtz – Tactical Officer
- Surgeon Commander Simmons – Chief Medical Officer
- Lieutenant Gainsworthy – Third Engineer, acting CO