About us

From racing to luxury carbon tenders

AST – Yachts & Composites was founded in summer 2017. The summer when the fleet of the racing A-Class catamarans started to foil. Among them CEO and owner Thilo Keller, who invented the ACC – Automatic Cant Control, the very first stable foil system. Thilo has been sailing and racing A-Class catamarans for almost 2 decades, won 20 international titles and always pushed the technical boundaries of this development sailing class. Not only did he built his own boats since he couldn’t afford a new boat as a student, he also started his first serial production in 2010 when he was 23 years old. He majored in Naval Architecture to quench his thirst for knowledge and specialized in hydro dynamics and yacht design.

During a sailing regatta at university he met Catarina Jentzsch, the second future CEO and owner of AST. They soon had their first project together: A solid wing for the A-Class weighing only 26kg with a sail area of 13.94m². 

Both finished their Master’s and Diploma studies and worked several years in the industry before they decided to run their own projects again. AST started their business with what they know best: Building high-performance boats and light weight composite parts.

The first serial product to launch was The Foiling Dinghy. A single-handed dinghy with the trickled-down foil system from the A-Class racing. The idea was to bring foiling into the mass market: Foiling for everyone. The Foiling Dinghy turned out to be a huge success with 120 boats built in the first 2 years of serial production. 2020 they presented their first rigid carbon tender with the pedigree of their racing yachts. The ASTender is another example of AST’s capabilities to build boats from sailors for sailors. Throughout the young history of the company they’ve always remained true to their ideals of industrializing boat building in their home country Germany. And they’re just getting started.

Our contribution to environmental protection and a greener future

The aim to reduce our carbon footprint starts in the design process of our boats. The ASTender is so much more efficient than a RIB it only needs a minimum of power and therefore fuel. Due to the light weight it can easily be run on electric drives. The outstanding build quality ensures a lifetime of more than 20 years. In the production we try to minimize pollution, energy consumption and also try to waste as less raw materials as possible. Our composite parts are made in a closed-mould process with almost no emissions. All the dust and chemical gases are filtered and collected.

In our opinion even the small things make a difference: Wherever possible we use paper mixing cups and if we have to use plastic, we try to reuse them as often as possible. Same accounts for the cradles and jigs, we there only use renewable raw materials such as wood. Our shipyard is settled in modern buildings with the highest standard of insulation to not only maintain a certain temperature level for the process temperature but also to reduce the required heating energy.

Thanks to all our efforts in the production and
waste management, we are achieving

0 %

Recyclable fibers on structural parts

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Of the boat built from recycled material

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The PET foam core of an ASTender containing up to 700 recycled plastic bottles.

100
CO2 emissions due to the use of recycled carbon fibers on non-structural parts and molds (certified from fiber supplier)
0 %

All models are available with powerful electric engines.

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We believe in synthetic fuels and run our tenders on fossil-free gasoline

Boat Shows & Events

Explore our ASTenders at the World's Most Stunning Destinations

Discover the style and performance of the ASTender in action at some of the world’s most breathtaking locations. From crystal-clear Caribbean waters to the serene Mediterranean coastline, see how our tenders enhance every adventure. Visit our Media page to explore stunning images and videos showcasing the ASTender in beautiful settings around the globe. Let your dreams set sail with ASTender.

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