Unnamed Defiant class starships

List of Unnamed Federation starships of the.

Second Fleet
In late 2373, several unnamed Defiant-class 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 (2370) and IKS Rotarran, following the evacuation of DS9, for a counterattack against the Dominion forces. 

Recapture of the USS Prometheus
In 2374, two unnamed Defiant-class starships escorted an unnamed Akira-class starship into battle with the USS Prometheus (Prometheus class) and three Romulan warbirds.

During the battle one of the ships was damaged by a misguided photon torpedo that was fired from the Prometheus. 

Escort for USS Voyager
In early 2378, two unnamed Defiant-class 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. 

Weitere Raumschiffe der Defiant-Klasse