Retractable bow foils


Wavefoil has developed retractable bow foils that provide significant fuel savings, reduced motions and a more comfortable experience at sea.​

Combining a smart retraction mechanism with the use of light but strong composite materials, Wavefoil is bringing wave propulsion to the market.

Exploiting the potential of wave energy

It has been known for over 150 years that vessels with wings – or foils – in the bow can be partly or solely propelled by wave energy. The foils generate lift when the vessel is moving up and down in waves, and the lift typically has a forward thrust component larger than the drag.

Put simply, wave power is directly converted into propulsive power.

A vessel in waves experiences additional resistance compared to calm-water operation. For wave lengths similar to the hull length, this additional resistance will be amplified due to resonance, implying large heave and pitch motions. Wavefoil’s retractable bow foils dampen these motions so that the additional resistance decreases.

So how much fuel can you save? That depends on the ship, its speed, the foil size and location, and the wave conditions.

Fuel saving for suitable ships is in the range of 5-15%.

Saving fuel is not the only benefit of bow foils. Increased comfort, reduced vibrations, less spray, increased operability and the ability to maintain higher speeds in waves for a given power are some other perspectives.



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About us


Eirik Bøckmann

Eirik holds a Master's degree and a PhD degree in Marine Technology from the Norwegian University of Science and Technology (NTNU). His PhD thesis, titled Wave Propulsion of Ships, studies the effect of bow foils by means of simulations and towing tank tests. After obtaining his PhD, Eirik continued to explore the benefits of bow foils as a Postdoctoral Researcher at NTNU.

Sven Kolstø

Chairman of the Board +47 47 25 46 58
Sven holds a Master's degree in Industrial Economics and Technology Management from NTNU, and has diverse experience within both early stage technology companies and politics. He is a co-founder of OptoScale, which develops a tool for precise bioscale measurements. Sven is a partner in CoFounder and has been engaged as Wavefoil's CFO, where he is responsible for the economy and business development.


Audun submitted his Master's thesis in Marine Technology at NTNU in 2017 and subsequently started working as CTO of Wavefoil AS. He is the inventor of Wavefoil's retractable foil mechanism and has been involved in developing retractable bow foils since the autumn of 2015. Audun is responsible for the technical development in Wavefoil.

Erlend Vastveit

Erlend holds a Master's degree in Mechanical Engineering, and a Bachelor's degree in Social Economics from NTNU. He began working as a Product Developer for Wavefoil in August 2018. Erlend came to Wavefoil after two years as a project manager for Ekornes. He also has relevant experience from subsea engineering, and as Head of Suspension for the student formula car NTNU Revolve.

Lennard bösch

Hydrodynamic Engineer +47 91 85 08 83
Lennard holds a Master's degree in Marine Technology from NTNU. Before joining Wavefoil in September 2020, Lennard worked for Jotun Marine Coatings and Kongsberg Maritime.


Michael N. Paulsen

Michael is a former Able-Bodied Seaman with extensive experience from Hurtigruten, a cargo ship, various ferries and high-speed catamarans. He is currently doing a Master's degree in Applied Physics at NTNU, and working as a Sales Engineer for Wavefoil.



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Wavefoil AS
c/o CoFounder TechHub
Havnegata 7
7010 Trondheim

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Invoice address

Wavefoil AS
c/o House of Business
Hoffsveien 1A
0275 Oslo

Org nr 917 810 508