| STARSHIP | |
| USS Defiant | |
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| Class: | Mayflower class |
| Registry: | NCC-1764 |
| Affiliation: | Federation, Starfleet |
| Launched: | 23rd century |
| Status: | Destroyed (2258) |
The USS Defiant (NCC-1764) was a Federation Mayflower class starship in service to Starfleet in the mid-23rd century. In 2258 of an alternate reality brought about by Nero's interference, the Defiant was part of a fleet destroyed by the Narada during a mission to investigate a lightning storm in space in the proximity of Vulcan. The USS Enterprise narrowly avoided colliding with the wreckage of the Defiant as it came out of warp.
| Ships named Defiant | ||||||||||||||||||||||||||||||||||||||||||||||
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| United Earth Starfleet | USS Defiant (NX-class) |  
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| Federation, Starfleet | USS Defiant (NCC-1764, Constitution-class) • USS Defiant (NCC-1764, Enterprise-class) • USS Defiant (I, NX-74205, Defiant-class) • USS Defiant (II, NX-74205, Defiant-class) • USS Defiant (NCC-75633-C, Defiant-class) • see also: Defiant-class • alternate reality: USS Defiant (alternate reality) • USS Defiant (alternate reality NCC-1764) • USS Defiant (alternate reality NX-74205) • Defiant's Constitution-class alternates • Defiant's Defiant-class alternates |  
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| Klingon Empire, Klingon Defense Force | IKV Defiant (E4D-class bird-of-prey drone escort) | 
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Asparax Confederation, Asparaxian Navy | ACS Defiant (K5B-class gunboat) | ||||||||||||||||||||||||||||||||||||||||||
| Imperial Starfleet (mirror universe) |
ISS Defiant (NCC-1764, Constitution-class) • ISS Defiant (23rd century) | 
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Terran Rebellion (mirror universe) |
Defiant (Defiant-class) | 
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