Seagate Space semisub is first launch platform to get ABS offshore spaceport AIP

Seagate Space launch platform AIP is first awarded under the newly published ABS Requirements for Offshore Spaceports. [Photo: ABS]

The Gateway-S unmanned semi-submersible launch platform developed by St. Petersburg, Fla.-based Seagate Space has become the first offshore asset to receive an approval in principle (AIP) under the newly published ABS Requirements for Offshore Spaceports.

“Safety and precision are critical to the success of offshore space launch operations,” said Miguel Hernandez, ABS senior vice president, global offshore. “This AIP reflects both ABS’ and Seagate Space’s commitment to advancing innovative technologies that enable reliable and efficient launch operations in a fast-evolving sector. ABS is proud to continue shaping the offshore infrastructure critical to supporting space launches across the globe.

The Seagate Space Gateway-S, platform, designed specifically for remote offshore launch operations, introduces a new category of modular offshore spaceport infrastructure. The platform can be configured for both launch and recovery as well as disassembled into container-sized modules for transportation by sea, truck or rail, allowing for multi-site deployments.

Other key features of the design include its semi-submersible hull form, which reduces wave-induced motion, and deck arrangement which can facilitate various mission-specific equipment.

“Our customers in the space industry are truly transforming humanity’s future, and we are proud to be at the forefront of supporting their unique maritime needs. Gateway-S is the first of a series of configurations that achieve greater capability at a more efficient cost point,” said Sean Fortener, co-founder and coo/president of Seagate Space.

Offshore recovery missions have skyrocketed over the past decade, soaring from just two in 2015 to over a hundred in 2024, notes ABS. Specialized barges and offshore support vessels enable this rapid growth, serving as a key theater for an array of offshore operations in support of the expanding commercial space industry.

Offshore spaceports enable more convenient and efficient launch operations by moving operations to sea, reducing public impact while relieving pressure on shore-based spaceport infrastructure.

The platform was approved in principle with applicable standards in ABS Requirements for Offshore Spaceports and ABS Rules for Building and Classing Offshore Units (Offshore Rules). An intermediate approval step, AIPs assist in demonstrating project feasibility of novel concepts to project partners and regulatory bodies.

ABS has taken a leading role in the development of industry requirements for offshore space infrastructure. It published the world’s first requirements addressing the unique challenges of offshore spaceports in 2023 as well as a joint development project reviewing remotely controlled dynamic positioning functions of autonomous rocket recovery droneships with SpaceX.

• More about ABS’ work supporting the space industry HERE.