The IKS Kut'luch was a Klingon D6-class battle cruiser in service in the mid-23rd century. By 2246, the Kut'luch was under the command of Commander Kor, with Kruge serving as a gunner.

In October 2246, General Korrd ordered the Kut'luch to cross into Federation territory and prevent any aid from reaching the stricken colony on Tarsus IV. Eventually, the Kut'luch encountered the USS Enterprise, under the command of Captain Robert April. April attempted to gain the Kor's assistance in the humanitarian mission to Tarsus IV, but Kor was determined to do battle and attacked the Enterprise. After a brief battle, the Enterprise brought all of her weaponry to bear on the Kut'luch and disabled her. Awaiting to die in glorious battle at the hands of April, Kor was bemused when the Enterprise retreated, and Kor vowed not to be fooled by a human Starfleet captain again. With the mission failed, the Kut'luch returned to the Klingon Empire for repairs. (TOS - Enterprise Logs short story: "Though Hell Should Bar the Way")

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