In the year 2378 the JonKa, under the command of Captain Korbus, was operating in the Belaruz system, located in the Maelstrom region bordering the Federation, Klingon and Cardassian empires. It was the head of a task force sent to the Belaruz system to track down the bird of prey IKV Gon'dev, which was disabled by a Kessok vessel.
The JonKa was later responsible for escorting a Klingon ambassador to Lyra Station for treaty talks with the Federation and Romulan Star Empire. After Korbus got involved in an altercation with the Romulan captain Terrik of the IRW Chairo, he attempted to use the JonKa to ram the Romulan ship, but was stopped by the USS Sovereign.
- The "JonKa" was alternatively spelled the "Jonka" in the game manual for Bridge Commander.