In 2378, the RanKuf was ordered to travel to Biranu Station and escort the USS Sovereign to the Tevron star system. However, the duty was cut short as Draxon was on a tight schedule, and the USS Dauntless continued to the duty instead. Shortly after, the RanKuf attacked two Romulan D'deridex-class warbirds, the IRW Soryak and IRW Chilvas, after they demanded to know why the Sovereign was assigned to Maelstrom.