The Hebel’s rudder blade

Mapalu - pletwa sterowa

The Hebel’s rudder blade, made by Mapalu is a great example of a device that simply and cheaply increases the capabilities of known design solutions that have existed for centuries.

Like all products developed and researched by Mapalu, it is an innovation characterized by novelty features on an international scale. It is a proprietary construction characterized by the shape of a narrowing double-sided through box constructed by the walls constituting the rudder blades. It will be able to be used both in newly produced units and as part of modernizing existing units. It provides control in all sailing conditions for all types of vessels, regardless of the type of propulsion.


  • Generates a much greater unit thrust force than the standard rudder at each rudder angle.

  • At small rudder angles, in the angle of yaw angle between 0 ° -10 °, the unit rudder thrust force is even twice as high. This property improves course stability as the unit responds quickly to any rudder inclination, allowing quick course correction. This feature reduces the total hull resistance, which reduces the fuel consumption of the ship's propulsion engine.

  • Another important advantage of our rudder blade is also the fact that significant thrust forces are generated at very low vessel speeds. All this causes that the rudder blade will begin to facilitate maneuvers in the port basin for vessels without aft thrusters.

  • A very important advantage of our rudder blade is also two times lower resistance of the rudder blade in the middle position (lower frontal resistance). Here, too, there is less fuel consumption by the ship’s propulsion engine and this will have a significant impact on economic performance and a decrease in carbon dioxide emissions.

  • Konstrukcja płetwy sterowej jest bardzo prosta, a to przekłada się na niskie koszty produkcji, prostej procedury ewentualnej wymiany lub naprawy.