CASC / CZ-11 WEY Technology · Haiyang, Shandong, China, China
Launch Pads
—
Annual Launches
5-8
Max Payload (LEO)
—
Established
2019
The Haiyang Sea Launch Platform is China's innovative sea-based launch capability, operating from mobile launch vessels in the Yellow Sea off Shandong province. First demonstrated in 2019 with a Long March 11 rocket, sea launches allow flexible positioning to optimize orbital insertion and avoid overflying populated land areas during ascent.
| Region | Asia |
| Country | 🇨🇳 China |
| Coordinates | 36.7000° N, 121.2000° E |
| Ownership | State Enterprise |
| Parent Entity | CASC (China Aerospace Science and Technology Corporation) |
| Regulatory Regime | Chinese State Administration of Science, Technology and Industry for National Defence (SASTIND) |
| Latitude Advantage | Mobile — vessel typically deploys to 35°N–5°N depending on mission; can reach near-equatorial positioning for GTO trades or higher latitudes for SSO |
| Azimuth Range | Variable — vessel positioning enables 30°–180° azimuth without overflight constraints |
Anchor Tenants
Active Users
Strategic Value
Removes overflight politics entirely — Chinese sea launches avoid debris-fall complaints from Russia, Mongolia, and Central Asia that plague inland Chinese pads. Operationally critical for solid-fuel commercial launchers (LM-11, Gravity-1, Smart Dragon).
Recent Activity
Gravity-1 maiden flight from sea platform January 2024 (largest solid rocket to date); ongoing CZ-11 commercial cadence; Haiyang sea-port infrastructure expansion through 2025.
2026
Larger sea-based platform commissioned for liquid-fuel commercial rockets
2027
Gravity-2 (liquid, larger payload) maiden flight from sea platform