The Class-4 tactical cube was a powerful combat vessel utilized by the Borg Collective in the late-24th century. The tactical cube was a variety of the standard Borg cube featuring significantly enhanced firepower and improved defenses.

Service historyEdit

Tactical cubes were developed by the Borg in response to increasingly complex and powerful defences developed by the races the Collective targeted for assimilation in the 2370s decade, in particular Species 8472 and the Federation. (Fact Files Issue {{{2}}}: "{{{3}}}"[citation needed])

The first tactical cube observed by Starfleet was encountered by the USS Voyager in the year 2376. The cube was targeted by Voyager in their attempts to assist the people of Unimatrix Zero and was later issued a self destruct command by the Borg Queen in her attempt to counteract the efforts of Voyager's crew. (VOY episode: "Unimatrix Zero")

Tactical cubes were later deployed by the Collective in their invasion of the Alpha Quadrant in 2377 (TNG video game: Armada II)

At least one tactical cube was present in a nebula within Grid 986 of the Delta Quadrant in 2377 where the USS Voyager discovered one of the Collective's transwarp hubs. This vessel was one of several Borg ships to attack Voyager as she made her second intrusion into the nebula to try and get home to Earth using the hub. (ST reference: Ships of the Line; VOY episode: "Endgame")

The tactical cube did not actually appear in the episode but was present in an image representing the events in the 2005 Ships of the Line calendar.

In 2380, an assimilated Vulcan named T'Uerell attempted to assimilate the Alpha Quadrant. After being defeated in the Bajor system by a Federation/Klingon/Romulan Alliance, T'Uerell retreated to a Polaric Ion Energy string where she brought a tactical cube from the Delta Quadrant through a transwarp conduit to fight the Federation Alliance forces. After suffering heavy casualties, the Federation Alliance forces managed to destroy the tactical cube, and, later, T'Uerell. (ST video game: Legacy)


Tactical cubes differed from the standard Borg cube in several ways, the most notable being the extensive hull armor that covered a large portion of the exterior hull of the ship. The interior was also slightly altered from what is known of Borg architecture. The vessel's central plexus was protected by multi-regenerative security fields. These ships were described as being extremely well armored and very destructive. (VOY episode: "Unimatrix Zero", ST video game: Legacy)

Alongside typical beam and torpedo weapons systems, tactical cubes were also armed with a holding beam to assist in the assimilation of starships by restricting the movement of said vessel and transferring drones aboard. Some vessels of the class were also fitted with technology assimilation beams which allowed the vessels to assimilate unique technologies they encountered in use by target species.

By 2377, the Collective had developed a way to join eight tactical cubes together to form a single large vehicle called a tactical fusion cube. (TNG video game: Armada II)

Known vesselsEdit

Borg tactical cubes
Tactical Cube 138C954-06764C954-10868C954-13448C954-16475C954-16743C954-24635C954-25962C954-35844C954-36691C954-39652C954-44575C954-46577C954-53388C954-56718C954-58648C954-59871C954-63384C954-71577C954-73544C954-74597C954-76587C954-79719C954-92344C954-95682unnamed Borg tactical cubes Borg


Borg starship classes
Borg assemblerassimilatorcollectorcolony shipcommand shipcubedetectordiamondfusion cubeharbingerharmonic defenderhypercubeinterceptorobeliskpyramidrectanglescoutspheretactical cubetactical fusion cubewedgeworkbee Borg

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