Crew of the IKS Drovana in 2372.
Named
Unnamed
Injured crew
Two injured crew of the forty-five injuries treated by Julian Bashir following an explosion aboard the Drovana. Among these forty-five casualties were fifteen cases of severe radiation burns, seven thoracic perforation traumas caused by shrapnel and twenty-three decompression-related injuries. (DS9: "Sons of Mogh")
It would not be unreasonable to assume that one of these individuals is the real Commander Sorval and the other Klingon whose identity was used by Kurn.
Officer
This Officer was a lieutenant serving aboard the Drovana that happened upon Worf (under the alias of Sorval) and Kurn when they boarded the ship to obtain detonation codes for a minefield the Klingons were constructing outside Bajoran space. He almost stabbed Worf with his D'k tahg, but was killed by Kurn with his disruptor. (DS9: "Sons of Mogh")
The Klingon Officer was played by actor D. Elliot Woods.