USS Southern Cross
From Star Trek: Theurgy Wiki
The USS Southern Cross (NCC-71810) was an Avenger-class Federation starship operated by Starfleet in the late 24th century.
Keval ch'Rayya spent his cadet cruise aboard the Southern Cross in 2372. Cadet Keval was assigned to the tactical departmentaboard the heavy frigate patrolling the Archanis Sector just prior to the start of the conflict known formally as the "Federation-Klingon War of 2372-2373" but was more commonly known as the "Two Year War" by most armchair historians.
That year, the Southern Cross found itself under attack by suddenly hostile Klingon forces when three birds of prey decloaked and launched a surprise attack on the ship. During the fight the Southern Cross’s chief tactical and assistant chief tactical officers were killed.
Keval ch'Rayya was the only member of the frigate’s tactical department able to reach the bridge and help repel the attack, despite the efforts of a Klingon boarding party that managed to beam onto the ship during the battle.