Encyclopedia Astronautica
SeaLaunch


American agency. SeaLaunch, USA.

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Associated Countries
See also
  • Agency Agencies or institutions overseeing design, development, construction, or operation of space-related systems. More...

Associated Launch Sites
  • Kiritimati Kiritimati (Christmas Island) in the Pacific Ocean was originally selected by Von Braun in his Collier magazine series of the early 1950's as an ideal equatorial launch site. A half century later, Boeing Sea Launch used an offshore location for orbital launches. The launch platform was a seagoing converted Norwegian offshore oil rig. Between missions it was berthed in Long Beach, California. It was towed to a location off Kiritimati for launches of the Ukrainian Zenit-3 launch vehicle. More...

SeaLaunch Chronology


1999 March 28 - . 01:29 GMT - . Launch Site: Kiritimati. Launch Pad: 0.0 N x 154.0 W. Launch Platform: ODYSSEY. LV Family: Zenit. Launch Vehicle: Zenit-3SL.
  • DemoSat - . Payload: HS 702. Mass: 4,500 kg (9,900 lb). Nation: USA. Agency: SeaLaunch. Manufacturer: Kent. Class: Technology. Type: Navigation technology satellite. USAF Sat Cat: 25661 . COSPAR: 1999-014A. Apogee: 36,045 km (22,397 mi). Perigee: 658 km (408 mi). Inclination: 0.7000 deg. Period: 645.00 min. The first Boeing Sea Launch mission. The Zenit-3SL lifted off from the Odyssey floating platform on the equator at 154 degrees West longitude. The DemoSat payload was an instrumented dynamic model of an HS-702 satellite built by Boeing Commercial Space/Kent. 13 minutes after launch, the Block DM-SL upper stage completed its first burn and entered a 180 km x 735 km x 1.2 degree parking orbit. A second burn 47 minutes after launch placed DemoSat in a 638 km x 36,064 km x 1.2 degree geostationary transfer orbit. Three hours later, a third DM-SL burn lowered the stage's perigee so that it would re-enter quickly.

2009 April 20 - . 08:16 GMT - . Launch Site: Kiritimati. Launch Pad: 0.0 N x 154.0 W. Launch Platform: Odyssey. LV Family: Zenit. Launch Vehicle: Zenit-3SL.
  • Sicral 1B - . Payload: Italsat-3000. Mass: 3,038 kg (6,697 lb). Nation: Italy. Agency: SeaLaunch. Spacecraft: Italsat. USAF Sat Cat: 34810 . COSPAR: 2009-020A. Apogee: 35,787 km (22,236 mi). Perigee: 35,785 km (22,235 mi). Inclination: 0.0000 deg. Period: 1,436.00 min. Summary: Second Italian military communications satellite. Dry mass 1680 kg..

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