Zenit-3SL

The Zenit-3SL was an expendablecarrier rocket operated by Sea Launch. First flown in 1999, it was launched 36 times, with three failures and one partial failure. It was a member of the Zenit family of rockets, and is built by the Yuzhnoye Design Bureau. RKK Energia produced the Block DM-SLupper stage, whilst the payload fairing was produced by Boeing. Launches were conducted from the Ocean Odyssey platform anchored on the equator in the Pacific Ocean, at a point with 154°W longitude, about 370 kilometres east of Kiritimati.