IKS Terror

The IKS Terror was a Klingon dreadnought operational in the late-23rd century.

In 2268 the Terror, under the command of Captain Kalan, was on a top secret mission to Alnath II, when Captain James T. Kirk and the USS Enterprise (NCC-1701), accused the Klingons of killing the crew of the Vulcan science ship, T'Pau. (TOS novel: The Klingon Gambit).