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High speed hydroplanes

In an effort to develop a safe, efficient and stable boat for breaking the world electric speed record on water, we have delved into hydroplane design and produced a number of prototypes to investigate performance.

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Hydroplanes are fascinating because, under certain conditions, their hydrodynamic drag does not increase with speed. Instead, hydrodynamic drag is constant and depends only on planing surface shape and mass, and only aerodynamic drag increases. This lets hydroplanes reach very high speeds if designed correctly.

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A primary focus of my work has been to remove the need to use air under the hull to lift the boat out of the water, as this can cause dangerous instability.

Hydroplane research

8prototypes

The number of test boats I have built before settling on the final design for a full scale prototype

200mph

The target speed for a viable electric speed record breaker

2weeks

The average time from start of build to the first test of a fully functional prototype boat

Get in touch

CD Aerostructures

Based in Southampton, UK

Copyright © 2025 CDAerostructures

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