We replace the propeller with a wave.

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We replace the propeller with a wave.

More efficient, and quieter. A fin, inspired by fish. Pantent granted, prototype running.

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How it works

Caudion (EXIST Start-up Grant no. 03EGTBY231) is funded by the German Federal Ministry for Economic Affairs and Energy and co-funded by the European Union (ESF Plus).

Our drive moves water the way fish do. In a wave-like fin motion.

Almost no cavitation. No spinning blades. No fragile electronics.

Efficiency

Simplicity

Quiet by Design

Ocean-Friendly

More range from every kilowatt

The wave-like fin motion pushes water in one clean direction - instead of losing energy to rotation and turbulence like a propeller does. The result is measurable, not theoretical.

Up to double-digit efficiency gains, measured on our boat-tested prototype

Same thrust at significantly lower RPM

Less energy lost to rotation, turbulence and cavitation

More range per charge - where electric boats win or lose

Efficiency

Simplicity

Quiet by Design

Ocean-Friendly

More range from every kilowatt

The wave-like fin motion pushes water in one clean direction - instead of losing energy to rotation and turbulence like a propeller does. The result is measurable, not theoretical.

Up to double-digit efficiency gains, measured on our boat-tested prototype

Same thrust at significantly lower RPM

Less energy lost to rotation, turbulence and cavitation

More range per charge - where electric boats win or lose

Efficiency

Simplicity

Quiet by Design

Ocean-Friendly

More range from every kilowatt

The wave-like fin motion pushes water in one clean direction - instead of losing energy to rotation and turbulence like a propeller does. The result is measurable, not theoretical.

Up to double-digit efficiency gains, measured on our boat-tested prototype

Same thrust at significantly lower RPM

Less energy lost to rotation, turbulence and cavitation

More range per charge - where electric boats win or lose

The Technology

Proven in water
Our boat-tested prototype: up to double-digit efficiency gains over a conventional propeller. Measured, not simulated.
Designed for manufacturing
Every component is built for standard fabrication. Simple parts, standard materials, nothing exotic to source or maintain.
The wave, engineered
Flexible fins oscillate in a controlled, phase-shifted wave. The motion that makes fish the most efficient swimmers on Earth.
Purely mechanical
No servos, no sensors, no electronics in the water. One compact, patented gear does all the work.
From CAD to open water
Designed and iterated in-house, validated on the water. Field testing with pilot partners continues.

Proven in water
Our boat-tested prototype: up to double-digit efficiency gains over a conventional propeller. Measured, not simulated.
Designed for manufacturing
Every component is built for standard fabrication. Simple parts, standard materials, nothing exotic to source or maintain.
The wave, engineered
Flexible fins oscillate in a controlled, phase-shifted wave. The motion that makes fish the most efficient swimmers on Earth.
Purely mechanical
No servos, no sensors, no electronics in the water. One compact, patented gear does all the work.
From CAD to open water
Designed and iterated in-house, validated on the water. Field testing with pilot partners continues.

Proven in water
Our boat-tested prototype: up to double-digit efficiency gains over a conventional propeller. Measured, not simulated.
Designed for manufacturing
Every component is built for standard fabrication. Simple parts, standard materials, nothing exotic to source or maintain.
The wave, engineered
Flexible fins oscillate in a controlled, phase-shifted wave. The motion that makes fish the most efficient swimmers on Earth.
Purely mechanical
No servos, no sensors, no electronics in the water. One compact, patented gear does all the work.
From CAD to open water
Designed and iterated in-house, validated on the water. Field testing with pilot partners continues.

Propellers are a compromise

Energy lost, loud, and it cavitates.

Up to 20% energy lost

It cavitates - eroding blades and efficiency.

Loud

Underwater noise regulation is tightening

A propeller wastes up to a fifth of its input energy in rotation and turbulence - energy your battery paid for.

Up to 20% energy lost

It cavitates - eroding blades and efficiency.

Loud

Underwater noise regulation is tightening

A propeller wastes up to a fifth of its input energy in rotation and turbulence - energy your battery paid for.

Up to 20% energy lost

It cavitates - eroding blades and efficiency.

Loud

Underwater noise regulation is tightening

A propeller wastes up to a fifth of its input energy in rotation and turbulence - energy your battery paid for.

Founding Team

Tim Baumgartner

Co-Founder & CEO Tim runs the business side: strategy, partnerships and financing. He holds a M.Sc. in mathematics and is completing a PhD in finance, with research stays in Singapore and Montreal. Before co-founding the company, he worked in investment banking.

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Vinu Alungalparambil Venu

Co-Founder & CTO Vinu is the inventor and patent holder behind our drive. Mechanical engineer, Master graduate from TU Munich. Vinu grew up in a fishing family on the Indian south coast and carried one question into engineering: why don't propellers move the way fish do? Today, he leads our engineering.

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“Nature solved efficient propulsion four hundred million years ago. Our mission is to finally bring that solution to boats - simple enough to build, robust enough to last.”

Tim Baumgartner

Co-Founder & CEO