The lieutenant commander at the helm of the USS Excelsior under Captain Sulu in Star Trek VI: The Undiscovered Country, seen again in the Voyager episode Flashback.
Lojur is the helm officer of the USS Excelsior in 2293. His name is never spoken and comes from the credits of Star Trek VI: The Undiscovered Country, in which he was played by Boris Krutonog.
He is at his post when the shock wave from the explosion of Praxis strikes the ship at the end of its survey of gaseous anomalies, and again when Sulu drives the Excelsior at full speed to Khitomer to help the Enterprise against General Chang's Bird-of-Prey.
Krutonog returned to the part for the Voyager episode Flashback, which revisits the same events through Tuvok's memories, including Sulu's attempt to reach Kirk and McCoy through the Azure Nebula.