- Star Fleet Technical Manual gives the registry as NCC-1707.
In 2268, the Hood participated in a fleet war games exercise. This exercise put four starships against the M-5 controlled USS Enterprise (NCC-1701). The M-5 malfunctioned, causing the Enterprise to fire full-powered phasers at the minimally-defended Excalibur, severely damaging the ship. (TOS: "The Ultimate Computer") While the Hood was damaged, it was one of the three ships that was ordered by Commodore Enwright to "Destroy the Enterprise" before Kirk ordered Mr. Scott to let the ship drift, prompting Commodore Wesley to abort the attack and take the chance that they weren't just playing dead.
- It remains unclear if the Excalibur was able to be reconstructed and reused, or if the damage was too widespread for repairs to be made. It also remains unclear if her crew survived.
- If the Hood was indeed destroyed earlier, then this may have been a new ship.