The USS El Dorado (alternately registered
and
) was a Federation starship, a Constitution-class heavy cruiser in Starfleet service in the 23rd century.
The construction of the El Dorado as a class I/class IXA was authorized by Starfleet appropriation on stardate 3220, and she was assigned the registry number NCC-1722. (TOS reference: Star Fleet Technical Manual)
El Dorado was built and had entered service by reference stardate 2/0109, configured as a mk II Bonhomme Richard-subclass vessel, with assigned registry number NCC-1724. El Dorado was later refit to mk III (Achernar-subclass) specifications around stardate 2/0212, and later refit to Mk IV (Tikopai-subclass) specifications around stardate 2/1202. (FASA RPG module: Federation Ship Recognition Manual)
In the year 2261, the El Dorado conducted a follow-up visit to the Chyrelkan system. (TOS novel: Renegade)
At some point prior to 2264, James T. Kirk served as first officer aboard the El Dorado. He brought this up in conversation with Number One, after meeting her during his first "unofficial" tour of the USS Enterprise, in the hopes of finding a commonality with her. (TOS comic: "All Those Years Ago...")
The El Dorado was refit to the Enterprise-subclass specifications, outfitted as an advanced heavy cruiser (CA+), by the 2280s decade. (ST video game: Starfleet Command)
- No history or fate is established for this vessel in Starfleet Command as its name was randomly assigned to a cruiser vessel by the game software.
The El Dorado was later placed in the inactive reserve fleet on stardate 2/2006. (FASA RPG module: Federation Ship Recognition Manual)
Connections
| Ships named or | ||
|---|---|---|
| Federation Starfleet | USS El Dorado (Constitution-class) • • El Dorado (prospector) • USS El Dorado (prototype) • USS El Dorado (mining freighter) • USS El Dorado (Galaxy-class) • see also: El Dorado-class
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| Romulan Star Empire | RIS Dorado (Snipe-class) • RIS Dorado (Shrike-class) | 
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| Bonhomme Richard-subclass (Constitution-class mk II class I/class XI cruiser/heavy cruiser starships) | ||
|---|---|---|
| Refit with mk II engines |
| |
| Built to mk II specifications | • • Centurion (fm. Farragut II) • • • • El Dorado • • • • • • • • • • • •
| |
| Authorized for construction | • • • • | |
| Achernar-subclass (Constitution-class mk III class I/class XI cruiser/heavy cruiser starships) | ||
|---|---|---|
| Refit with mk III engines | • • • • • • • El Dorado • • • • • • • • • • • • • • • • • •
|
|
| Built to mk III specifications | • • • • • • • • • • • • • • • • • • | |
| Authorized for construction | • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • | |
| Tikopai-subclass (Constitution-class mk IV class I/class XI cruiser/heavy cruiser starships) | ||
|---|---|---|
| Refit to mk IV specifications | • El Dorado • • • • • • • • • •
|
|
| Built to mk IV specifications | • • • • • • • • | |
| Authorized for construction | • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • | |
| Enterprise-subclass (Constitution-class class XI/class XII cruiser/heavy cruiser starships) | ||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Federation, Starfleet | Ships of various specifications | NCC-1335 • • • • Christopher Pike • • • • • • • • • • • • • • • heavy cruiser (CA): • • • • • • • • • Farragut II • rear-fire heavy cruiser (CAR): • • • • • • • • • • advanced heavy cruiser (CA+): • • • El Dorado • • • • • • • • • heavy drone cruiser (CAD): • • • • • command cruiser (CC): • • • • • heavy command cruiser (CB): • • • • • • • • • • • • • • • • • • • • • • • fire support cruiser (CFS): • • • • advanced fire support cruiser (CFS+): • • • • tactical command cruiser (TCC): • galactic survey cruiser:
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| Refit to mk I specification | • • • • • • • • • • • Centurion (fm. Farragut II) • • • • • • • | Built to mk I specification | • • • • • • • • | |||||||||||||||||||||||||||||||||||||||||||
| Refit to mk II specification | • • • | Built to mk II specification | • • • • • • • • • • • • • • | |||||||||||||||||||||||||||||||||||||||||||
| Refit to mk III specification | • • El Dorado • •
|
Built to mk III specification | • • • • • • • | |||||||||||||||||||||||||||||||||||||||||||
| Terran Empire, Starfleet (mirror universe) |
• • • • • • • • | 
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