Klingon K't'inga-class cruiser whose crew slept for seventy-five years, believing the Empire was still at war with the Federation.
The T'Ong was a Klingon K't'inga-class battle cruiser launched on a long-range mission about seventy-five years before the 2360s, with its crew in suspended animation, at a time when the Klingon Empire and the Federation were bitter enemies.
In The Emissary, the ship was about to revive its crew, who were expected to attack Federation targets in the belief that the two powers were still at war. K'Ehleyr came to the Enterprise as a special emissary to deal with it. Worf posed as the captain of a Klingon warship and ordered Captain K'Temoc to stand down, avoiding bloodshed.