In 2375, Gor's ship traveled into Cardassian territory to meet with the Female Changeling and have the Breen join the Dominion War. En route, crewmembers from Gor's warship captured Worf and Ezri Dax on a planet in the Goralis system. (DS9: "Penumbra")
Worf and Ezri were both interrogated by the Breen aboard the vessel and were later brought by Gor to his meeting with the Female Changeling and Weyoun. (DS9: "'Til Death Do Us Part")
Gor's ship later traveled to Cardassia Prime. (DS9: "Strange Bedfellows")
The Star Trek Customizable Card Game gives Gor's warship's name as Tykk (β).