Gerris to explore ammonia fuel cell + “torpedo propulsion” for vessels up to 36 metres

Gerris Technologies UK is proud to announce the launch of an ambitious new feasibility study titled "Integration of Direct Ammonia Fuel Cell to Power Novel Torpedo Propulsion System", kicking off on 1 September 2025.

Over a seven-month period, this cutting-edge initiative will explore the potential of high-efficiency ammonia fuel cells to drive next-generation hybrid-foiling propulsion systems, opening new pathways to fully decarbonised maritime transport.

Bringing together a powerhouse of expertise including ZEM Fuel Systems, Adelan, the Port of Cromarty Firth, and GerrisBoats, the project leverages advanced knowledge in energy conversion, fuel cell innovation, and sustainable marine design.

The focus is on demonstrating how direct ammonia-to-electricity fuel cells can be seamlessly integrated into torpedo-style propulsion units that optimise onboard space, enhance safety, and dramatically reduce fuel consumption.

This pivotal study is backed by the UK Government through the UK Shipping Office for Reducing Emissions (UK SHORE), part of the Department for Transport. Since 2022, UK SHORE has committed over £230 million to accelerate maritime decarbonisation and unlock economic growth across the sector.

Innovate UK, under UK Research and Innovation, serves as the programme's principal delivery partner—supporting transformative innovations that position the UK at the forefront of sustainable shipping technology.

Gerris Technologies Ltd, the UK-based sister company of GerrisBoats, has full access to patented technologies developed in Italy, including advanced solutions for hydrofoil and torpedo propulsion that support the transition to zero-emission maritime systems. With a bold vision to become a leading technology force in the UK’s thriving marine sector, the company is actively assembling a dedicated technical team and establishing a new engineering hub in Scotland—strategically located near its partners at ZEM Fuel Systems—to accelerate clean propulsion development and deployment.

– Mercedes Barbuti, Operations Director, Gerris Technologies Ltd

The integration of ammonia propulsion into a submerged torpedo combined with a hybrid foil hull represents a breakthrough in safety, efficiency, and scalability. By physically isolating the fuel tank and propulsion system from passenger areas, this configuration drastically reduces operational and onboard risks.

At the same time, it enables cleaner, more aerodynamic vessels with superior seaworthiness. The submerged torpedo delivers high thrust with minimal drag, and its modular design paves the way for standardised industrial production—enhancing reliability and reducing costs.

“At GerrisBoat, we believe the future of clean marine propulsion doesn’t just float — it flies!

And it does so with complete comfort and safety for passengers. This project brings together an alternative to traditional hydrofoils, designed for larger vessels, and cutting-edge ammonia fuel cell technology—proving that zero-emission transport can be faster, safer, and, why not, more stylish. We believe our concept has the potential to be a true paradigm shift in marine engineering.” –

Massimo Verme, CEO, GerrisBoats

With generous support from the UK Government via UK SHORE, and delivered by Innovate UK, this pioneering project marks a bold step forward in sustainable maritime innovation. Gerris Technologies Ltd and ZEM Fuel Systems are thrilled to begin this journey—bringing cutting-edge ammonia fuel cell propulsion and hybrid foiling systems to life.

With feasibility study preparations underway, stay tuned for more exciting developments as we move toward a cleaner, safer, and scalable future for global shipping.