The Zenit-3SLB or Zenit-3M is a Ukrainian expendable carrier rocket derived from the Zenit-2SLB. It is a member of the Zenit family of rockets, which were designed by the Yuzhnoye Design Bureau. It is a modified version of the Zenit-3SL, designed to be launched from a conventional launch pad rather than the Sea Launch Ocean Odyssey platform.Launches of Zenit-3SLB rockets are conducted from Site 45/1 at the Baikonur Cosmodrome.