Maritime Fusion
Building first-of-a-kind tokamak fusion reactors for marine vessels and remote installations. Zero emissions, no refueling, global range. Join the mission.
163 in this dataset
10 developers pursuing it
103 organisations in US
What these terms mean
Every classification on this page, defined. These are controlled-vocabulary terms, so the same word means the same thing on every profile.
- Fusion developer
- Develops a fusion device or power plant concept. Carries no implication that the device exists or works.
- Fusion
- Organizations pursuing energy from nuclear fusion, and their dedicated supply chain.
- Tokamak › › Tokamak
- Doughnut-shaped magnetic confinement using a strong toroidal field plus a current driven through the plasma itself. The most-studied configuration, and the one ITER uses.
Funding
across 1 round
| Date | Instrument | Amount | Detail |
|---|---|---|---|
| 2025-11 | Equity roundSeed | $5M | Seed round led by Trucks VC, with Aera VC, Alumni Ventures, Y Combinator and angel investors. |
In Maritime Fusion’s own words
Quoted from the organisation’s own site as we archived it. Their description of themselves, not ours, and not a claim this site has checked.
We’re onboarding early partners, hiring fast, building hardware and finalizing our first prototype. Don’t miss the boat, the future of energy won’t wait.
We're building robust, zero-emission fusion reactors for marine deployment — unlocking a practical, scalable solution to decarbonize global maritime transport and remote energy installations.
Maritime Fusion began with the following realization: HTS magnets enable breakeven fusion, but not necessarily competitive grid fusion. Is there an alternative application besides the grid that is better suited for this first generation of fusion reactor technology? Ultimately, we view these off-grid markets as a stepping stone, to allow us to deploy a fleet of FOAK fusion reactors, while we learn, iterate, and discover new materials. This will then eventually enable cost competitive grid scale reactors on a timeline closer to 2040.
Our founders met at SpaceX, reunited at Tesla, having learned how to engineer from first principles and bring cutting edge technologies to market.
Now, we’re bringing fusion from theory to deployment, starting with one of the hardest sectors to decarbonize.
Join a fast-moving team solving real problems and building real fusion hardware. We're quite literally building a star on Earth.
At grid-scale, first wall heat flux, nuclear activation, and exhaust remain unsolved. Our target markets need 10× less power, tolerate lower capacity factors, and cost no more than alternative fuels—without emissions.
Yes. The complete propulsion system (tokamak, shielding, cryogenic plant, RF systems, magnet power supplies, tritium handling, heat conversion and motor) fit inside a volume of ~6,000 to 7000 m³—far smaller than the large fuel tanks needed for Ammonia or Hydogren powered vessels. We actually enable more cargo carrying capacity, increasing the vessel utility while not needing to ever bunker fuel.
Our roadmap targets first deployment in 2032. Because of the reduced size and complexity compared to grid plants, we do not plan on first constructing an intermediate device, we're going straight for full scale.
Where Maritime Fusion sits
Composed from records in this dataset, not from outside research. Every figure below is counted from what the site holds, so it moves when the data does.
Maritime Fusion is one of 10 organisations in this dataset pursuing tokamak.
It is one of 103 we hold in US.
Disclosed equity funding totals $5m across 1 round, which ranks 14 of 14 among organisations here with a disclosed figure.
Related organisations
Others pursuing the same approach, then others in the same country.
Pursuing the same technology
Others in this dataset working on Tokamak.
Sources
- Maritime Fusion operator
A source marked operator is the subject’s own publication. That is legitimate, and it is not independent confirmation. Methodology.