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Memory Alpha is a collaborative project to create the most definitive, accurate, and accessible encyclopedia and reference for everything related to Star Trek. The English-language Memory Alpha started in November 2003. It currently consists of 64,983 articles and 69,711 files. If this is your first visit, please read an introduction to Memory Alpha.


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The USS Excelsior, the class's lead ship

The USS Excelsior, the class's lead ship

The Excelsior-class was a type of Federation starship used by Starfleet from the late 23rd century through the late 24th century. It was the backbone of Starfleet for nearly a century, making it one of the longest serving starship designs, and one of the most recognizable ships in the fleet.

The Excelsior-class was initially constructed during the early 2280s at Starfleet's San Francisco Fleet Yards orbiting Earth.

Starfleet had high hopes for the first ship of this class, the prototype USS Excelsior, which was equipped with a transwarp drive, and was regarded as that century's "Great Experiment."

Despite the failure of the "Great Experiment," Starfleet forged ahead with employing the Excelsior design. After remaining in the Earth Spacedock until at least 2287, the prototype Excelsior was subsequently recommissioned for active service by 2290.
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Picture of the Day

Terok Nor, the station that would later become Deep Space 9, in orbit of Bajor during the 2340s.
Terok Nor, the station that would later become Deep Space 9, in orbit of Bajor during the 2340s.
Terok Nor, the station that would later become Deep Space 9, in orbit of Bajor during the 2340s.
(DS9: "Wrongs Darker Than Death or Night")

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