Sisko's lightship was a replica of a Bajoran lightship, constructed by Commander Benjamin Sisko in 2371. Working alone using traditional tools, the vessel took him approximately three weeks to build. The only modern technology added was artificial gravity through a gravity net in the floor, as Sisko claimed weightlessness made him queasy.
Sisko's inspiration for building this craft was his study of ancient Bajoran texts. He and his son, Jake, later successfully emulated the journey from Deep Space 9 to Cardassia, making use of tachyon eddys that were naturally found in the Denorios Belt and confirming the ancient texts. Upon their arrival, they encountered three Galor-class warships, led by Gul Dukat, who revealed the discovery of an ancient crash site and celebrated Sisko's arrival with a fireworks display. (DS9: "Explorers")