Zenit 3SL – Sea Launch Family: Zenith meters Length: 4.6 meters Diameter: 0.42 meters Launch Mass: 0 Low Earth Orbit Capacity: 0 The Zenit 3SL was manufactured by Sea Launch with the first launch on . Zenit 3SL has 6 successful launches and 1 failed launches with a total of 7 launches. Manufacturer Sea Launch is a Commercial RUS entity that was founded in and is administered by . Sea Launch has 6 successful launches and 1 failed launches with a total of 7 launches.