Sea Launch AG (consortium) · Mobile platform — typical launch position 0°N, 154°W (mid-Pacific equator); homeport: Long Beach, California, International (sea-based)
Launch Pads
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Annual Launches
0
Max Payload (LEO)
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Established
1995
Sea Launch was the first commercial equatorial sea-launch operation, using the converted self-propelled semi-submersible oil platform Odyssey paired with the assembly/command ship Sea Launch Commander. The system sailed from Long Beach, California, to a launch position on the equator at approximately 154°W where it conducted Zenit-3SL orbital launches to GTO. Operated 1999–2014 by an international consortium of Boeing (U.S.), RSC Energia (Russia), Yuzhnoye/Yuzhmash (Ukraine), and Aker Kværner (Norway). The platform conducted 32 launches with 29 successes before operations ended amid the 2014 Russia–Ukraine geopolitical breakdown. The Odyssey platform was towed to Russia in 2020 and has been mothballed at the Slavyansky shipyard in the Far East. Multiple revival attempts (S7 Space, ZeroG/SLO concepts) have failed to restart operations as of 2026.
| Region | Oceania |
| Country | 🌍 International (sea-based) |
| Coordinates | 0.0000° N, -154.0000° E |
| Ownership | International Consortium |
| Parent Entity | Sea Launch AG (originally); transferred to S7 Space (Russia) in 2016 |
| Regulatory Regime | FAA-AST commercial launch licence (US); flag-state regulation for marine operations |
| Latitude Advantage | 0.0° — true equator launch; ~30% energy bonus to GTO vs. KSC; eliminates inclination correction burn |
| Azimuth Range | Easterly equatorial — optimized exclusively for GTO/GEO injections |
Anchor Tenants
Active Users
Strategic Value
Historically critical proof-of-concept for commercial equatorial sea-launch economics. Post-2014 dissolution underscores geopolitical fragility of international launch consortia spanning the US, Russia, and Ukraine.
Recent Activity
Platform mothballed at Slavyansky shipyard, Russian Far East, since 2020; no funded revival path as of 2026
2027
No credible relaunch identified; revival contingent on resolution of Russia–Ukraine conflict and renewed Russian commercial launch market access