The Wave Breaker is a feature fitted to every Kingfisher Powercat under 6 metres. It delivers clean, undisturbed water to the outboard by reducing the turbulence and aeration created between the hulls — which means better fuel economy, more consistent engine performance and a quieter ride.
The problem it solves
A catamaran’s twin hulls are what make it stable, efficient and soft-riding. But they also change how water reaches the engine. On a single-engine powercat, the water arriving at the propeller has travelled between two hulls, and it carries turbulence and entrained air with it.
When air gets into that flow, it forms pockets across the surface of the propeller — aeration, and the cavitation that follows. The prop loses its grip on solid water, so the engine works harder for less thrust. The results are higher fuel consumption, inconsistent performance and more noise.
How it works
The Wave Breaker reduces the air and turbulence generated by the boat’s motion through the tunnel, so the water reaching the outboard arrives clean and solid. The propeller bites properly, the engine holds its revs, and the ride quietens down.
Why only on Powercats under 6 metres
It comes down to engine configuration.
Kingfisher Powercats under 6 metres run a single outboard on the centreline — directly in the path of the disturbed water coming through the tunnel. That’s precisely where aeration causes problems, and precisely where the Wave Breaker earns its place.
Kingfisher Powercats over 6 metres run twin engines, each sitting behind its own hull in cleaner water. The problem doesn’t arise, so the Wave Breaker isn’t needed.
It’s the same logic behind every decision we make on these boats: the feature goes where it does real work, not everywhere it could be fitted.
What it means on the water
- Better fuel economy — the prop converts more of the engine’s output into thrust
- More consistent performance — no sudden loss of bite when the prop loads up with air
- A quieter, smoother ride — less cavitation noise through the hull
- Standard, not an option — every Kingfisher Powercat under 6m has one
Frequently asked questions
What is aeration, and why does it matter on a catamaran? Aeration is air getting into the water flow reaching the propeller. On a single-engine catamaran the water passing between the hulls carries turbulence and air with it, so the prop can lose its grip on solid water — costing fuel, thrust and quiet running.
Which Kingfisher boats have a Wave Breaker? Every Kingfisher Powercat under 6 metres, as standard. Our Powercats over 6 metres run twin engines and don’t need one.
Is the Wave Breaker an optional extra? No — it’s standard on every under-6m Powercat we build.
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