USS Equinox (NCC-72381)

The USS Equinox, like Voyager, had been pulled into the Delta quadrant by the Caretaker array

The USS Equinox was destroyed following an attack by an Alien life form which inhabited another dimension. The Equinox had been useing this lifeform in experiments into more efficent forms of Warp drive. The creatures demanded the descruction of the Equinox or the would also destroy Voyager.

Following the Equinox's destruction the reamining crew transfered to Voyager.