A Kreetassan starship was a type of starship utilized by the Kreetassans during the mid-22nd century. These vessels had warp capability and were about 100 meters long.
In circa 2152, a Kreetassan starship, having accidentally and unknowingly picked up a symbiotic lifeform during a survey of the organism's homeworld, briefly docked with the Earth Starfleet ship Enterprise NX-01. The Kreetassan ship departed just as the organism entered Enterprise through a docking bay on the port side of the craft. Later responding to a hail from Enterprise, the Kreetassan vessel contacted the Starfleet craft, transmitting from the Kreetassan ship's bridge, and sent Enterprise the coordinates of the symbiotic organism's homeworld, to where the lifeform was safely returned. (ENT: "Vox Sola")
A Kreetassan ship was seen flying over the Kreetassan capital city later in 2152. (ENT: "A Night In Sickbay")