WHEN SHOULD YOU CHOOSE A VARIABLE PITCH PROPELELR?
If your boat is working under various conditions, various trips, various speeds ...
Change the pitch for a minimum resistance in sailing. When you are in a light breeze, the propeller pitch can be increased to avoid the noise and fuel consumption at low Rpm. At high Rpm, the hydraulic drive allows you greater maneuverability in port.
Better use of the engine at low rpm cruising speed, with less noise, vibration and a fuel consumption reduction. With the ability to better maneuverability in port.
WORKING AND SERVITUDE BOATS
Maximizes thrust at low rpm, increasing maneuverability.
Better use of the engine at all speeds, change the pitch allows the propeller curve to follow the curve of the engine.
It also allows better maneuverability of the boat at low speeds (between 0 and 1 knot) without engaging and disengaging the propeller all the time because the pitch can regulate around the «neutral position», it is the same for reverse.
Types of boats: trawlers, fishing boats, ferries, pushers, coasters, buoy ...