GREEN BOATING BLOG
Project Zero: a 70-metre sailing yacht that runs on nothing but renewables
Most "green" superyachts are really just slightly-less-thirsty superyachts. Project Zero is trying to be something else: a large sailing yacht engineered from the keel up to run on 100% renewable energy.
No diesel, by design
The brief from the owner was unusually strict — no fossil fuel on board, full stop. That single rule reshapes everything: the rig, the hull, the systems, even the daily routines of the crew. Project Zero combines a tall, efficient sailing rig with a large battery bank, regenerative electric propulsion, solar surfaces and a hydro-generation system that recovers energy from the props when the boat is sailing fast.
Under sail, the spinning propellers act as turbines, topping up the batteries. At anchor, solar takes over. When extra range is needed, the yacht can run on green methanol produced from renewable sources — still a hydrocarbon, but a fully circular one.
Why a Dutch project matters
Project Zero is being built in the Netherlands, with Vripack leading the design and a network of Dutch yards and suppliers behind it. That matters because the Dutch maritime cluster — from sailmakers in Friesland to systems integrators in Zwolle — has the chance to turn these one-off experiments into repeatable know-how.
A few things stand out for the wider boating world:
- The yacht proves that "renewable only" is technically possible at serious size, not just on a daysailer.
- Many of the sub-systems (regenerative props, smart energy management, lightweight rigs) scale down beautifully to 12–20 metre cruisers.
- It puts pressure on the rest of the industry: if a 70-metre yacht can do this, the standard "diesel generator humming all night" model starts to look very old-fashioned.
A floating proof of concept
Project Zero will not single-handedly clean up yachting. But it is exactly the kind of high-visibility, ambitious project the sector needs — one that quietly normalises ideas (no fossil fuel, regenerative sailing, methanol back-up) that will eventually become standard equipment on much smaller boats.
We will be following her launch closely. For anyone planning their next build or refit, this is one to keep an eye on.
