ISS Excelsior (NCC-2000)

The ISS Excelsior (NCC-2000) was a Terran Excelsior-class battle crusier in service in the late 23rd century. It was the prototype for the Excelsior class and the testbed for the failed transwarp experiments.

The ship was initially under the command of Captain Lawrence Styles. In 2289, Styles planned to overthrow Emperor Tiberius. He was assassinated for treason by first officer Hikaru Sulu, who assumed command. Sulu would later conspire with Captain Chekov of the ISS Enterprise-A to overthrow the Emperor, and betray him when the plot was discovered. Although Chekov and the Enterprise were destroyed, Sulu escaped punishment and continued aboard the Excelsior long after the death of Tiberius.