ForumMonaco · December 2024
Monaco Hydrogen Forum
The world's leading hydrogen forum, under the patronage of H.S.H. Prince Albert II.
Sea Rings · Floating Hydrogen Ports
There is no green fuel station in the ocean.
There is no green fuel station in the ocean.
We are building it.
Floating rings that turn wind, waves and sun into green hydrogen, and refuel yachts at sea. Selected by EU BlueInvest. Open to investors.
0energy sources on one ring
0 monthsto build a Sea Ring
0rings, Marseille to Genoa
0cables, trucks or grid
Scroll
The gap
Green boats are being ordered. Nobody can refuel them at sea.
The sea is the biggest untapped energy source
Cities run out of roof and space. Offshore, wind, sun and waves are free.
No hydrogen at the marina
Batteries weigh 3 to 5 times more than hydrogen. Trucking hydrogen in is expensive. Making it on the spot is not.
Renewables need a buffer
Wind and waves come when they want. Hydrogen stores the surplus and sells as a fuel.
The mechanism
How a Sea Ring turns the sea into fuel.
Scroll. The ring animates through seven steps.
STEP 1 · Wind
Harvest the wind
Vertical-axis turbines on the deck. Any wind direction, low profile, quiet.
STEP 2 · Solar
Harvest the sun
The deck crown is a solar skin. The one source with a predictable curve.
STEP 3 · Wave
Harvest the waves
Wave converters on the floaters turn constant motion into power.
STEP 4 · Electrolysis
Seawater becomes hydrogen
Desalinate, then split by electrolysis. The sea supplies the cooling water.
STEP 5 · Storage
Store it as hydrogen
Three sources stack into one steady curve. Hydrogen holds the surplus and powers the ring all night.
STEP 6 · Bunkering
Refuel yachts at sea
Hydrogen yachts dock and pay at the pump, ten minutes from the coast.
STEP 7 · Aquaculture · Hospitality
The rest is a by-product
A fish cage below. Nine suites and a beach club on deck. Rings join, and a tug can move one.
Why hydrogen
Three intermittent sources. One stable curve.
Wind and waves come when they want. The sun keeps a schedule. Stacked, they level out. Hydrogen stores the rest.
Full technology pageWindWaveSolarCombined + H₂ bufferDemand
Engineering
Proven hardware on a class-approved floating island.
Power generation is 43% of the build. The deck is the wrapper around an energy plant.
Floating island technology
Developed by Dr. Abdullah Daou at Beirut International Marine Industry. Approved by marine classification societies.
Our own shipyard
350 trained technicians on call. Steel, floaters and architecture built in-house.
Years at sea
Every system on board has a long sea track record. Integration is solved at design stage.
Modular
Rings join to add power on demand. Marinas scale hydrogen ring by ring.
Movable
A tug moves a ring where demand is. It is not a sunk coastal structure.
Designed to be lived on
Nine suites, private decks, kitchen, bar and cold rooms, by AUB Architects.
Sustainability
One platform. Three coastal problems.
The Mediterranean coast is short of power, imports its fish and wants new experiences. A Sea Ring answers all three on one deck.
- SDG 2
- SDG 7
- SDG 8
- SDG 9
- SDG 13
- SDG 14
Green hydrogen, made at sea
Wind, wave and solar only. No fossil backup, no grid.
No seabed damage
No cables, no breakwaters. The ring floats, anchors and can leave.
Open-water aquaculture
Fish farming that normally needs a bay, sharing the ring's structure.
Zero-fuel logistics
The tender boat runs on the ring's own hydrogen.
One footprint, three uses
Energy, food and tourism stacked on one spot, as EU multi-use research asks.
SDG aligned
Clean energy (7), innovation (9), climate (13), life below water (14), zero hunger (2).
Applications
Four markets. One ring.
Phase 1 · first customer
Green coastal tourism
Refuel yachts at sea inside a boutique resort, ten minutes from the city.
Phase 2
Green ports and bunkering
Clean power and green fuels for ships waiting outside ports.
Phase 2
Green data centres
Submerged AI data centres, cooled by the sea, powered by the ring.
Any phase
Energy and fish farms
Rings joined into a farm. More hydrogen, more fish, one structure.
Phase 1 · Go to market
Thirteen Sea Rings from Marseille to Genoa.
Boutique resorts anchored outside the Riviera's best marinas. Each ring refuels hydrogen yachts, serves fish from its own cage, and hosts a restaurant and beach club. Tourism pays first.
13Sea Rings
9suites per ring
70beach-club seats
10 minfrom the city
13 Sea Rings · one every 9 monthsHydrogen yacht routeSwipe the map →
Recognition
Presented on Europe's hydrogen stages.
Selected by EU BlueInvest. Presented in Monaco, Cyprus and Greece.
EU programmeBrussels · Cycle 5
EU BlueInvest Readiness Assistance
Selected by the European Commission (DG MARE, CINEA, PwC). The only start-up from Cyprus and Greece.
ConferenceAgia Napa, Cyprus · CMMI
Riding the Waves
Selected by the Cyprus Marine and Maritime Institute to present Blue Economy innovation.
ForumCyprus
Cyprus Hydrogen Forum
Sea Rings presented to the Cypriot hydrogen and maritime community.
ForumAthens
Greece Hydrogen Forum
Presented to the Greek hydrogen and green-gases community.
CompetitionBeirut · 2025
AUB President's Innovation Challenge
Semi-finalist among 88 applicants.
Alliances, partners and suppliers
Open for funding
Own a piece of the first floating hydrogen port.
The equity round for the first Sea Ring is open, alongside an EIC Accelerator application. Investors, family offices and strategic partners can apply below.
€6–7Mequity round, first Sea Ring
€2.5MEIC Accelerator grant, October 2026
€70–90Mproject finance, 13-ring chain
$5.99Minitial ticket: one ring plus working capital
Tourism pays first
Hospitality carries the cash flow. Hydrogen and fish come on top.
A yard, not a slide deck
Built at the group's own shipyard, 350 technicians on call.
Repeatable engineering
The naval design is paid once and reused on every ring.
From the founder
The thinking behind the rings.
2024 · LinkedIn
White Paper: Floating Energy Islands, Hydrogen, and Sustainable Sea Living
Why offshore wind needs floating energy hubs, and the path to 2030 green marine fuel.
2024 · LinkedIn
Sea Rings Floating Marinas
Energy, aquaculture and a floating marina on one ring, piloting Lemuria.
2024 · LinkedIn
Energy Islands, from the Right Angle
Why floating energy islands need joint ventures to become real.
The next 100 years at sea
Be a shareholder in the first floating hydrogen port.
The round is open. We answer every serious application within 48 hours.