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|Armaments:||18 phaser arrays, 3+ torpedo launchers|
|Defences:||regenerative shielding system, ablative armor, multi-vector assault mode|
The Prometheus-class was a classified advanced tactical cruiser. It was a revolutionary design that had the ability to confront the enemy. Attacking from multiple, warp capable vectors for a formidable surprise attack. One innovation that was incorporated into the design was the installation of holoemitters that were outfitted throughout the ship. This allows the EMH Mark II doctor to project itself holographically across the ship allowing it to tend to the crew without it being restricted to sickbay. (VOY novel: Message in a Bottle)
The Prometheus-class was one of several starship designs, along with the Sovereign and Defiant classes, that were created in response to the Borg threat following the USS Enterprise-D's encounter with a Borg Cube in System J-25 in 2365. Starfleet Tactical's task was to design a vessel that could be fast, maneuverable, and be equipped with the latest weaponry that was being designed to fight the Borg.
However, none of the new designs or weapons were ready for the Borg attack in 2366 which resulted in the destruction of 39 starships and the loss of 11,000 lives. This created a new sense of urgency in getting better equipped starships up and running in the fleet. While the Sovereign and Defiant classes entered service in around 2371, the launch and testing of the USS Prometheus was put back until 2374.
The initial trials of the Prometheus went well, until she was hijacked by a group of Romulans keen on taking the Prometheus to the Tal Shiar so they could learn the latest starship secrets. While the crew were killed by the Romulans, they were prevented in keeping the Prometheus by the starship's Emergency Medical Hologram and The Doctor from the USS Voyager. (VOY episode: "Message in a Bottle")
After the safe return of the Prometheus and the testing of the ships multi-vector assault mode were completed, Starfleet rushed the construction of two further vessels, the USS Cerberus and USS Heracles. Both of these vessels were in service by late 2375, and the Cerberus served as Admiral William Ross's flagship from 2376 to 2379. (DS9 - Avatar novel: , and TNG - A Time to... novel: A Time for War, A Time for Peace)
The Prometheus-class was still in service in 2409, and by that time had inspired two variant classes: Phoenix-class and Cerberus-class, some of these ships were fitted with 4 pulse phaser cannons. (ST video game: Star Trek Online)