Excalibur (NX-03)

Excalibur (NX-03) was a United Earth Starfleet starship under the command of Captain Bran Styles in the 22nd century. Along with Columbia, the ship was stationed at Starbase 1 in 2156 when five Romulan starships attacked the station, beginning the Earth-Romulan War. Fleet Captain Erika Hernandez of Columbia ordered Excalubur to flee the battle and warn Starfleet. Captain Styles obeyed, but the ship was chased down by the faster Romulans and was lost with all hands except for Bryce Shumar, the ship's first officer, who left via a Shuttlepod and warned Starfleet. 


 * This ship shares its registry with Challenger (NX-03), which is also implicated to be the third NX-class ship built.