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Servogear EcoFlow Propulsor

Controllable Pitch Propellers

Servogear Ecoflow PropulsorTM is a unique controllable pitch propeller (CPP) system for high-speed workboats, fast ferries, offshore vessels and yachts. The concept offers an optimal combination of speed, bollard pull, manoevrability and fuel efficiency.


Through continuous theoretical and practical research since 1973, we have developed an incredible efficient controllable pitch propellers, which today runs successfully on a large number of vessels worldwide (see our real time references map here)


The Servogear CPP system covers an engine range of 300 to 4000 kW and speed up to 50 knots.


Servogear deliver complete solutions, tailor made for each vessel. This includes the delivery of:



Controllable Pitch Propeller - Servogear Ecoflow Propulsor - The concept



Illustration of the mechanism of our CPP system:






Advantages of Servogear CPP

Efficient propulsion leads to lower fuel consumption, more economic operation and less pollution. Servogear's controllable pitch propellers combines its efficiency with a high level of comfort.


Advantages of Servogear CPP:


  • Reduced levels of noise and vibrations
  • Slimmer and more efficient equipment
  • Reduced hull resistance
  • Wider operational range
  • A unique combination of high speed, superb acceleration and ample pollard pull
  • Reduces NOx and CO2 emissions
  • Improved Fuel Economy

Proven Efficiency of Servogear CPP

Tank and full-scale verification tests (graph below) have proven that the Servogear's controllable pitch propeller system is more efficient than any other known propulsion concept available for high-speed vessels operating in the range 20 – 50 knots.


The graph shows the typical efficiency of the different propulsors. Results achieved with an optimized Servogear Ecoflow PropulsorTM have been plotted in for the purpose of comparison. The tests have been conducted by SSPA in Sweden and Marintek in Norway.


Graph demonstrating propulsion efficiency - controllable pitch propellers by Servogear


Since 1973 Servogear has delivered more than 1600 controllable pitch propeller installations wold wide. Search in our references to learn more about our projects. Please contact us for additional information about controllable pitch propellers from Servogear, or if you have new information about any of our references.