For the primary universe counterpart, see USS Defiant (NCC-1764).
For the Terran Rebellion starship, see ISS Defiant (24th century).

In the mirror universe, the ISS Defiant (NCC-1764) was a Terran Empire Constitution class starship in service to the Imperial Starfleet in the mid 23rd century.


The Defiant was destroyed by a Tholian force led by Loskene in 2268, after Loskene had demanded the Defiant retreat. Its recording beacon was recovered from the Defiant's wreckage by the ISS Enterprise. Despite standard precedure to retaliate against any military that attacks a Terran vessel the Empire did not respond to this particular attack, per the recommendation of Captain Spock to Emperor Gill in light of the Empire's greater concern at the time with the Klingon-Cardassian Alliance. (Decipher RPG module: Through a Glass, Darkly)

Ships named Defiant
United Earth Starfleet USS Defiant (NX-class) Seal of United Earth United Earth Starfleet Emblem
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-classalternate reality: USS Defiant (alternate reality)USS Defiant (alternate reality NCC-1764)USS Defiant (alternate reality NX-74205)Defiant's Constitution-class alternatesDefiant's Defiant-class alternates Ufp-emblem USS Defiant (NCC-1764) assignment patch
Klingon Empire, Klingon Defense Force IKV Defiant (E4D-class bird-of-prey drone escort) Klingon Empire Asparax Confederation, Asparaxian Navy ACS Defiant (K5B-class gunboat)
Imperial Starfleet
(mirror universe)
ISS Defiant (NCC-1764, Constitution-class)ISS Defiant (23rd century) TerranEmpire Terran Rebellion
(mirror universe)
Defiant (Defiant-class) Terran symbol

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