Hydro Dynamic (HD) rudders have an asymmetrical profile and are always applied in a pair.

Van der Velden® HD

The HD rudders provide an excellent manoeuvring performance, which is proven in practice and in the most stringent towing-tank trials. These high-efficiency rudders can be used with or without a nozzle. They have an asymmetrical profile and are always applied in a pair. The HD rudders have been especially developed for inland vessels in combination with a 2, 4 or 6 rudder propulsion set-up.

The HD rudders have asymmetric rudder angles up to 80 degrees, providing optimal slipstream guidance. With these rudder you are assured of an excellent manoeuvring performance, also with low velocity (speed). They have a maintenance-friendly design and a long lifespan.

DMC advises:
The Van der Velden® Hydro spoiler for maximum performance. This spoiler improves the propulsion efficiency, increases speed and reduces vibrations and sounds.



  • Excellent manoeuvring performance
  • Long lifespan
  • Eco-friendly design
  • Low maintenance


  • Inland vessels that require high manoeuvrability during different sailing conditions (high and low water) and situations (canals, low velocity).


Retrofit bulb

DMC (Retrofit) Rudder Bulb

The DMC rudder bulb is an energy saving device that improves the propeller wake field. In operation, the bulb will reduce fuel consumption and emissions.

The rudder bulb reduces rotational losses of the propeller an increases thrust at high loads.

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Barke Optimised Steering System (BOSS™)


The BOSS is able to calculate the rudder forces for specific angles, which are not measured or displayed by any of the ship’s navigation systems.

The BARKE® rudder is the solution if you are looking to invest in today and tomorrow.

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