
Koshi DNA
Every Koshi is the result of more than 20 years of advanced composite engineering, developed through the production of aerodynamic carbon fibre components for some of the world's most demanding supercars.
Koshi DNA
Long before building performance boats, we perfected the science of lightweight structures, where every gram, every layer and every millimetre made the difference between ordinary and extraordinary. That same obsession defines every Koshi today. Because true performance doesn't begin with horsepower. It begins with engineering.
True performance is never defined by speed alone. It is the perfect balance of lightweight engineering, structural integrity, efficiency, comfort and absolute control. Our patented construction technology combines more than 20 years of expertise in advanced carbon composites, aerospace-inspired manufacturing techniques and proprietary structural engineering to create an entirely new benchmark for high-performance boating.
This was never about building a lighter boat. It was about redefining what a boat can be.
Up to 5x Lighter
Engineered to be up to five times lighter than the world's finest conventional composite constructions.
Up to 8x Stronger
Engineered to be up to eight times stronger. The result is a structure that delivers exceptional rigidity, dramatically reduces vibration, provides outstanding acoustic insulation and offers a level of comfort that conventional boatbuilding simply cannot achieve.
One Monocoque
Thanks to our patented structural construction process, the hull and every structural component become a single integrated monocoque, engineered to be virtually impossible to delaminate, even under the most demanding conditions.

Beyond Boats
From supercar aerodynamics to patented marine construction, the Koshi Group applies its carbon expertise wherever performance is decided by engineering.
More to explore · in preparation
Koshi DNA
It is experienced every time the throttles go down.