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Memory Alpha

List of unnamed Federation starships of the Defiant-class.

Second Fleet []

Second Fleet 2

Two Defiant-class ships (in addition to the Defiant itself), in the Second Fleet

In late 2373, at least two of these starships belonged to the Second Fleet.

While the Dominion attacked Deep Space 9, during the second Battle of Deep Space 9, several of these vessels crossed the Cardassian border and destroyed the Dominion shipyards on Torros III. These ships later joined with the USS Defiant and IKS Rotarran, following the evacuation of DS9, for a counterattack against the Dominion forces. (DS9: "Call to Arms")

Recapture of the USS Prometheus []

In 2374, these two starships escorted an Akira-class starship into battle with the USS Prometheus, the T'Met and two other Romulan D'deridex-class warbirds.

During the battle one of the ships was damaged by a misguided photon torpedo that was fired from the Prometheus. (VOY: "Message in a Bottle")

The first ship was labeled USS Defiant (2370) across the top but missing any visible registry numbers.

Escort for USS Voyager []

USS Voyager escorted home

A Defiant-class (lower left) escorts USS Voyager

In mid-2378, these four starships stationed near the Sol system were dispatched by Admiral Owen Paris to a defensive point near an opening Borg transwarp aperture near Earth.

The ships opened fire on the emerging Borg sphere and assisted in its destruction. Following the emergence of the USS Voyager from the debris, the unnamed Defiant-class starships assisted in escorting Voyager back to Earth. (VOY: "Endgame")

Utopia Planitia Fleet Yards

Utopia Planitia Fleet Yards, 2371

The Star Trek Encyclopedia, 4th ed., vol. 1, p. 197 also states that a Defiant-class starship was under construction at the Utopia Planitia Fleet Yards in Star Trek: Voyager episode "Relativity".

Section 31 ship []

Section 31 Defiant Class ship

A Section 31 ship

This ship, which was equipped with a cloaking device, was slightly modified with a darker hull, elongated (outward) nacelles, and blue colored Bussard collectors.

In 2381, it retrieved the torpedo casing that William Boimler was launched from following his faked death aboard the USS Titan. He was subsequently revived and recruited into Section 31. (LD: "Crisis Point 2: Paradoxus")

Like many starships that have appeared on Lower Decks, this vessel did not include markings indicating a name or registry number.

USS Protostar intercept[]

Protostar Fleet

A Federation task force intercepts the USS Protostar in 2384

In 2384, at least five Defiant-class ships were tasked with intercepting the USS Protostar. (PRO: "Mindwalk", "Supernova, Part 1", "Supernova, Part 2")

Earth Spacedock[]

Defiant orbiting Spacedock, 2401

Defiant class at Earth Spacedock.

This Defiant class starship was shown in orbit of Sol Station in 2401. (Star Trek: Picard season 3 end credits)

A total of eighteen ships of the class were a short time thereafter gathered at the same location for the Frontier Day celebrations. (PIC: "Võx", "The Last Generation")

The total number of Defiant-class vessels present at Frontier Day was established by Picard Research Assistant Jörg Hillebrand. [1]

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