KM Yachtbuilders are specialists in aluminium.
We build complete yachts, but also supply to third parties:

– Hulls & Superstructures
– Watertight doors
– Booms
– Tillers
– Fixed and lifting keels
– Rudders
– Roofs & Plaforms
– Art work

We build both for private individuals and for companies.

Had a collision with a buoy?

You have also come to the right place if you need repairs to your aluminium yacht. Please contact us via for more information about our work or for a quotation.

A few examples

Beside our ‘own’ yachts we have built several hulls and other aluminium constructions for well known yards:

– De Vries Feadship
– Royal Huisman Shipyard
– Nordia Van Dam
– Holland Jachtbouw
– Hutting Yachts
– Newthex
– Palfinger
– Waterdream
– Steeler Yachts


Long service life 

Aluminium does not rust. Aluminium reacts very quickly with the oxygen in the air. This results in a thin layer of aluminium oxide on the outside of the metal. Any further contact with oxygen on the inside of the aluminium part is made impossible. Thus, the metal will not be affected by corrosion. The oldest aluminium sea-going yacht – built in 1936 – is still very much afloat.


An aluminium hull is stiff and little affected by vibration. An aluminium hull behaves well in heavy swell and choppy seas.

Benefits of aluminium

There is a lot to be said for aluminium as a material for building yachts:


Aluminium is a lightweight material. It weighs three times less than steel. This means that the hull may weigh up to 50% less compared to steel. A lighter hull offers better performance, a shallow draught, lower fuel consumption, less capital outlay for engine and propulsion systems.

Strong and safe 

Aluminium guarantees a stiff and strong ship. Although it has a slightly lower tensile strength, the strength vs weight ratio of aluminium is equivalent to that of steel. There is much less risk of a hole in the hull in the case of a collision, than with a fibreglass hull. This makes aluminium yachts safer yachts, especially when at sea, when distances to reach the shore and emergency assistance are often vast.


Low maintenance costs

An aluminium yacht does not have to be painted, which reduces building and maintenance costs. An aluminium hull is easy to repair and has little vulnerability to small imperfections such as scratches.

Flexible building material 

Glassfibre yachts are built with the use of a mould. The mould’s size can not be varied, and each hull made from this mould is exactly the same as its predecessor. Mass-produced yachts are usually built this way. An aluminium hull is built on its own deck and frames and each yacht can thus be tailored to the individual customer’s needs. Changes may even be made during the building stage. Aluminium is easy to deform, which makes it possible to build complex round bilge hulls.

High trade-in value 

Aluminium yachts have a very long service life and therefor maintain their value.

Aluminium thickness 

The thickness of the aluminium depends on the customer’s preferences, the intended sailing region and the use of the yacht. The following thicknesses are applied as standard:

Deck  3 – 5 mm
Hull above the water line 4 – 7 mm
Hull below the water line 5 – 8 mm

Two examples of different thicknesses

Stadtship 56 'Oester'

The ‘Oester’ has a hydraulic lift keel, to allow the yacht to dry out. This ship therefore has a 15 mm thick bottom plate. The other parts are 7 mm thick. Furthermore, this yacht features a custom built Park Avenue boom and an aluminium tiller.

Bestevaer 53ST ‘Bestevaer II’

The first two metres of the Bestevaer II’s bow consist of 10 mm plating, the remainder of the hull has a thickness of 7 mm. The deck has a thickness of 6 mm while the superstructure is 5 mm. This makes the ‘Bestevaer II’ suitable for sailing in light ice for destinations such as Spitsbergen. Another special feature is that much of the deck hardware – such as bollards, brackets and hand rails – has been custom-built of aluminium especially for this yacht.

Download more informatie about aluminium here:
Information about aluminium
Why aluminium