Lieutenant Commander Lojur was a 23rd century Starfleet officer of Russian descent, who served as the helmsman aboard the USS Excelsior under Captain Hikaru Sulu.
Lojur served at the helm aboard the Excelsior during its three-year mission cataloging gaseous planetary bodies in the Beta Quadrant, from 2290 to 2293. He also served at the helm during the battle at Khitomer against Klingon Chang in 2293. (Star Trek VI: The Undiscovered Country; VOY: "Flashback")
Lojur was played by actor Boris Lee Krutonog. His accent was far thicker in "Flashback" than in
The Undiscovered Country.