aluminium know-how.

To this day, OPHARDT Maritim is the only German manufacturer capable of producing high-precision boats in aluminium – boats that meet the most demanding operational requirements of professionals on the water. Competitors’ products often reveal weaknesses, such as the use of unsuitable materials or the application of time-consuming traditional production methods and welding techniques.

We rely on
state-of-the-art technology.

One of our industry benchmarks is the automated robotic welding of the aluminium hulls, which has long been standard in the automotive industry for the production of chassis and other components. This automated production requires years of experience in the processing of aluminium as well as in the design and manufacture of aluminium boats.

robotic welding.

Thanks to a highly dynamic robotic welding system, we can weld hulls automatically from different angles, which is a new benchmark in boat construction. The hulls produced in this way are measurably more reliable and show a degree of precision that cannot be achieved with manual welding. This is a feature that is indispensable for high-speed boats that are regularly in operational use.

Robotic welding guarantees accurate and strong welded joints, both inside and outside. Parallel welding eliminates any distortion of the aluminium panels and ensures a smooth outer surface throughout. In addition, with parallel welding using two 7-axis robot arms, a travel speed of up to 1.5 m per minute can be achieved. In comparison: approx. 0.3 m of welding per minute can be achieved manually in a much more uneven quality.

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Patented DuplicAl® procedure and
innovative Triple-Tech method

OPHARDT Maritim manufactures precise aluminium boats on the basis of OPHARDT’s patented DuplicAl® manufacturing procedure.

Advantages of the DuplicAl® procedure:

  • Modular lightweight construction according to the modular principle
  • Perfectly matched components as a pre-assembly system
  • Easiest and fastest assembly of components before welding
  • Use of virtual forms that allow quick adjustments

This efficient and effective engineering solution ensures high quality assurance and poses a challenge to established standards in boat building.

In the triple-tech manufacturing process, welding is additionally combined with bolting and bonding in order to maximize joint strength and torsional stiffness while minimizing corrosion. The bonding process results in less distortion than welding.


CFD (Computational Fluid Dynamics) technology digitally analyses the hydrodynamic problem areas of a boat: thus the hull geometry is already optimized during the design phase.

Boats manufactured in this way are characterized by the highest precision and symmetry, which is essential for demanding performance and operation at high speeds of up to 70+ knots and in rough seas.