DRIFT Energy Secures First-Ever AiP for Energy-Harvesting Vessel Producing Green Hydrogen at Sea

DRIFT Energy has been awarded an Approval in Principle by RINA for its energy-harvesting vessel design, marking the first time an AiP has been granted for a ship of this type. The certificate confirms that DRIFT's novel design meets safety levels equivalent to established marine industry standards under RINA's risk-based framework, and represents a key milestone toward full plan approval ahead of a planned first vessel launch in 2027 and a current orderbook of more than 30 vessels.

 

Strategic Significance of the AiP

 

The RINA certification is a commercially and technically significant validation for a concept that sits at the intersection of marine engineering, renewable energy generation, and green hydrogen logistics. Approval in Principle frameworks are used by classification societies to evaluate novel designs that fall outside existing rule sets, providing a structured pathway for innovative vessels to demonstrate safety equivalence before the full classification rules for their category exist. For DRIFT, the AiP establishes that its energy-harvesting ship concept has been scrutinised by an independent classification body and confirmed as meeting credible safety standards, strengthening the company's ability to engage with shipyards, investors, port operators, and commercial counterparties who require regulatory validation before committing to the concept.

 

Vessel Design and Energy Generation Concept

 

DRIFT's energy-harvesting ships are designed to harness deep ocean wind resources to produce green energy at sea and deliver it worldwide. The vessels use hydro-kinetic turbines mounted under the hull to generate electricity from the vessel's motion through the water, with that electricity converted via electrolysis into green hydrogen fuel stored on board for subsequent delivery to ports and demand centres. The concept addresses one of the central challenges in green hydrogen logistics, which is the cost and complexity of transporting hydrogen from land-based production facilities to coastal or island communities that lack direct access to renewable energy or pipeline infrastructure. By producing hydrogen at sea from ocean energy resources and delivering it directly by vessel, DRIFT targets markets where conventional green hydrogen supply chains are not economically viable.

 

GOLDILOCKS AI Routing Technology

 

Central to the commercial viability of the concept is DRIFT's proprietary AI-enabled routing technology, named GOLDILOCKS, which enables the ships to identify and follow optimal weather patterns across the global ocean to achieve high load factors relative to other renewable energy sources. The ability to dynamically route vessels toward high-energy ocean environments is critical to the economics of the concept because the yield of the hydro-kinetic turbine system is a direct function of vessel speed through water, which in turn depends on wind and sea state conditions. By using AI to seek out and sustain high-energy operating conditions, the system is designed to achieve utilisation rates that would be unachievable by fixed offshore renewable energy installations that must accept whatever conditions prevail at their location.

 

Green Hydrogen Delivery for Hard-to-Reach Markets

 

DRIFT has positioned its technology particularly toward coastal and island communities and sectors that face challenges in decarbonisation due to grid constraints or limited access to renewable energy. These markets represent a significant portion of global energy demand that is currently difficult to serve with conventional green hydrogen supply chains, which typically require proximity to large-scale renewable generation, electrolysis capacity, and storage infrastructure. The DRIFT vessel concept reduces the infrastructure requirements at the demand side by delivering hydrogen directly by sea, enabling communities and industries that lack terrestrial energy transition options to access green hydrogen without the capital-intensive build-out of local production capacity.

 

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RINA's Role and Technical Assessment

 

Patrizio Di Francesco, North Europe Special Projects Business Development Manager and Principal Engineer at RINA, has described the AiP as demonstrating RINA's commitment to supporting the safe and credible development of innovative vessel concepts that contribute to the energy transition through the use of green hydrogen as an energy carrier. RINA's assessment involved close technical collaboration with DRIFT's design team to evaluate the novel approaches to at-sea energy generation and hydrogen production and storage against classification and safety requirements established from the earliest stages of development. The AiP framework is well suited to concepts of this type because it allows classification expertise to be applied to novel vessel categories before formal rule sets have been developed, providing regulatory clarity without waiting for the industry to establish a complete governance framework for energy-harvesting ships.

 

Commercial Traction and Orderbook

 

DRIFT has reported significant commercial traction since its foundation in 2021, with engagement across utilities, ports, and maritime operations sectors. The company has a current orderbook of more than 30 vessels, a figure that provides meaningful commercial validation at the concept stage and suggests that potential customers have assessed the technology and value proposition sufficiently to make forward commitments. The first vessel is planned for launch in 2027, after which the company intends to move to series production to fulfil its orderbook. Series production will be essential for delivering the cost efficiencies required to make the green hydrogen produced by the fleet competitive with alternative supply sources.

 

Implications for Marine Renewable Energy and Green Hydrogen

 

The DRIFT AiP represents one of the more commercially advanced milestones yet achieved in the emerging segment of ocean-based green hydrogen production. The concept occupies a distinctive position in the broader green hydrogen landscape because it generates hydrogen directly at sea from ocean energy resources rather than relying on land-based renewable installations or conventional vessel bunkering. If the technology performs as designed at commercial scale, it could provide a new category of green hydrogen supply that is geographically flexible, infrastructure-light at the destination, and competitive in markets where land-based alternatives are constrained. The success of the 2027 first vessel launch will provide critical real-world data on the concept's operational and economic performance, informing the trajectory of the wider orderbook and the longer-term commercial case for ocean energy harvesting as a hydrogen production pathway.

 

Outlook for DRIFT and the Energy-Harvesting Vessel Category

 

The granting of the first AiP for an energy-harvesting ship by RINA establishes a precedent and a framework that will likely influence how similar concepts are evaluated by other classification societies and by the regulatory bodies that govern new vessel categories. As DRIFT advances toward construction and launch of its first vessel, the design and safety frameworks established through the RINA collaboration will provide the foundation for the broader governance architecture that commercial-scale deployment will require. For the marine industry, the emergence of vessels specifically designed to generate and transport green hydrogen represents a significant extension of the sector's role in the global energy transition, adding a new category of marine asset to the growing portfolio of offshore renewable energy infrastructure.