At first glance, Breakthrough might seem like another superyacht destined to attract attention due to its dimensions. It measures 118.80 meterswas built by Feadship and is part of that category of boats in which each meter is usually accompanied by swimming pools, terraces and private spaces. The difference is that here the real claim is not on the external postcard. The point that makes this project something exceptional is below deck: a cryogenic system designed to bring liquid hydrogen at -253 ºC in a luxury vessel.
The project was not born as Breakthrough, but as Project 821, the name with which Feadship unveiled it at its Amsterdam shipyard in 2024. The Dutch shipyard defines it as the first superyacht with a hydrogen fuel cell system, a statement that should always be attributed to the company to maintain rigor. The idea was not only to build another large ship, but to explore how far a non-combustion electricity generation technology could be taken within a platform of more than 100 meters.
The “secret” of the yacht is below deck
Carrying liquid hydrogen on a yacht is not simply about changing one tank for another. Feadship details that Project 821 incorporates a 92 m³ cryogenic tank for about four tons of hydrogen, integrated into a dedicated and very isolated room. The problem is that liquid hydrogen takes up much more space than a conventional fuel when the available energy is calculated: the shipyard speaks of between eight and ten times more volume compared to a non-fossil diesel equivalent.
That hydrogen does not burn like a conventional fuel. It passes through 16 PowerCell systems that function like small power plants: They combine hydrogen and oxygen to generate electricity, and the exhaust is water vapor. The resulting energy powers an architecture integrated by ABB, with direct current electrical grid, intelligent energy management and Azipod thrusters. This means that hydrogen does not directly move the yacht, but rather produces the electricity that allows it to move and keep its on-board consumption active.
As we can see, its most ambitious part is designed not to be seen, but the boat does not give up showing itself as a large superyacht. Feadship highlights that it incorporates more hull openings than any other Feadship to date, with 14 balconies, seven platforms and nine hull doors. The Edmiston listing completes the picture with a swimming pool, three hot tubs, Nemo lounge, spa, cinema, hospital, touch-and-go helipad and three elevators.
At this point, the question is obvious: Does Breakthrough always run on hydrogen? No. Feadship does not present it as a yacht capable of doing everything with its fuel cells, but as a hybrid boat that uses that energy in specific scenarios. The shipyard talks about a week of silent operation at anchor or sailing at 10 knots in protected areas without fossil fuels. It is an interesting figure, but it also marks the limit: hydrogen serves to reduce noise and local emissions in certain uses, not to completely replace the conventional system.
The reason is physical, not commercial. Even on a 118.80 meter yacht, there is not enough space to carry the liquid hydrogen necessary for a complete ocean crossing. That’s why Breakthrough combines its fuel cells with MTU generators capable of running on HVO, a second-generation biofuel, within a hybrid architecture.
The project was also an exercise in integration. Feadship maintains that there were no specific class, Flag State or IMO regulations for hydrogen storage and fuel cell systems on such a project, so it worked with Lloyd’s Register to develop specific equipment, protocols and safety procedures. ABB completes that part from the electrical side: it integrated the 3 MW system with the Onboard DC Grid network, energy management and Azipod thrusters.
The other big challenge is outside the boat. It is one thing to design a yacht capable of using liquid hydrogen and quite another to create the infrastructure to safely supply it. Air Products announced in 2025 that it had supplied Breakthrough with liquid hydrogen in what was the first bunkering of this type in the Netherlands. The data is important because it remembers that the technology does not depend only on the tank, fuel cells or propulsion: it also needs ports prepared to handle fuel at extreme temperatures.
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Breakthrough demonstrates that a technology that is difficult to store, regulate, integrate and supply can leave the laboratory and enter a real ship. It may remain an exception for years, available to very few. Still, its value lies in having brought one of the most complex conversations in maritime energy to a hull that is already sailing.
Images | Feadship
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One of the most advanced yachts in the world keeps its biggest secret below deck: cryogenic tanks at -253 ºC
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by Javier Marquez.
