Romulan flagship, TEI remastered

As of 2268, the Romulan Star Empire used D7 class battle cruisers of Klingon design and equipped them with cloaking technology.

B'Etor and Movar in 2367

B'Etor and General Movar collaborating during the Klingon Civil War in 2367.

"That's a Klingon ship! But it couldn't be, not in this area.
- Intelligence reports Romulans now using Klingon design.

Romulan-Klingon relations shifted between being "blood enemies" and titular "allies" in the 23rd and 24th centuries.


Background information Edit

The existence of a "Romulan-Klingon alliance" in the 23rd century has never been explicitly stated. In "The Enterprise Incident", all that was said was that "Intelligence reports Romulans now using Klingon design." The Making of Star Trek (finished during the early part of the third season of TOS) does say, however, that the intention at the time was to have the Klingons and Romulans form an alliance against the Federation.

In writing Star Trek III: The Search for Spock, Harve Bennett had originally written the film with the Romulans as the belligerents, whose vessel was designated the "Bird-of-Prey", but later rewrote the Romulans as Klingons, as they were determined to be more exciting. After having "Klingicized" the characters in the film, he decided to keep the vessel designation intact. Recalling his two month binge watching of every episode of Star Trek, "I didn't change their ship, because I remembered a piece of trivia that stated there was a mutual assistance military pact between the Klingons and the Romulans for an exchange of a military equipment." (Starlog #103, February 1986, p. 17)

Though spotty references were made since the original reference, there were also few key indications, that a loose alliance spottily existed between the two races for the next century:

  • In Star Trek VI: The Undiscovered Country, Romulan delegates were one of the three main groups present at the Khitomer Conference, indicating some kind of relationship between the Klingons and the Romulans. However, they were ultimately discovered, at least in part through the actions of Nanclus, to be one of the conspirators involved in the assassination of Gorkon and the Federation president.
  • In TNG: "The Neutral Zone", Worf says the Romulans "killed my parents in an attack on Khitomer at a time when they were supposed to be our allies." That was 2346, and would require that the two races be both blood enemies and allied powers at the same time.
  • In TNG: "Reunion", Riker says in response to a suggestion that the Klingons and Romulans were working together, "A new Klingon alliance with the Romulans?" By saying "new" it implies that there had been an "old" one at some point. The two powers were "blood enemies" for 75 years prior to the episode, so any former alliance would most likely have had to have ended prior to that. The Battle of Klach D'kel Brakt in 2271, mentioned in DS9: "Blood Oath", might have been at or near that end of the alliance, as it took place 21 years prior to them being described as "blood enemies."

According to the Star Trek: The Next Generation Technical Journal, the Romulan cloaking device was acquired by the Klingons as an exchange for several D7-class battle cruisers for the Romulans during the Alliance. In fact according to apocryphal accounts, in Seven Deadly Sins, Romulans required the power system of the D7-class ships to provide the power required to use the new improved cloaking device.

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