ABS has granted approval in principle (AIP) to Seagate Space for its unmanned offshore launch platform. It is the first asset approved under ABS’s new Rules for Offshore Spaceports.
The platform, named Gateway-S, is a semi-submersible system built for offshore launch and recovery operations. It introduces a modular approach to spaceport design at sea.
Gateway-S can be dismantled into container-sized modules. Operators can transport them by ship, truck or rail. The system can also be rapidly reassembled and deployed at multiple locations.
Its semi-submersible hull reduces motion from waves. The deck layout supports mission-specific equipment and flexible spacecraft operations.
ABS said the approval confirms the technical feasibility of the design and supports regulatory engagement. The AIP process helps validate new concepts before construction.
Seagate Space said the platform lowers cost while expanding launch capability. The company plans additional variants based on the same architecture.
Offshore space activity continues to grow quickly. Recovery missions rose from just two in 2015 to more than 100 in 2024. Operators now rely on specialized vessels and platforms to support launch and retrieval at sea.
Offshore spaceports reduce pressure on land-based facilities. They also limit public disruption and expand launch site options worldwide.
ABS developed the Offshore Spaceport requirements in 2023. The firm also supports offshore recoveries through projects with commercial space operators, including work on autonomous rocket recovery vessels.
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