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Controllable Pitch Propellers are particularly suitable for boats that require variable propulsion power conditions in terms of speed, bollard pull and maneuverability.
Fixed Pitch Propellers are typically suitable for long voyage vessels, which do not require operating at variable speeds.
Advantages of a Controllable Pitch Propeller
- High propulsion efficiency, optimizing maneuverability: passing from “ahead” to “reverse” occurs smoothly and without dead time, simply through propeller pitch inversion.
- Very short response time while maintaining full power ensures higher safety for the ship and crew, and reduces the stopping distance of the vessel considerably.
- More efficient use of the diesel engine: 100 % engine power remain available at the propeller in every situation (cruising, trawling, maneuvering, etc.) Furthermore, a Controllable Pitch Propeller allows constant operation of the engine at its nominal speed, thereby significantly reducing the fuel consumption, maintenance cost, and clutch disc wear.
We offer the following Controllable Pitch Propellers from Masson Marine:
|Hub Ø||Max Shaft Ø||Max Prop Ø|
|MMS 300||0,6 (0,8)||300||100||1350|
|MMS 370||0,9 (1,2)||370||132||1650|
|MMS 430||1,3 (1,7)||432||132||1850|
|MMS 480||2,5 (3,4)||480||160||2160|
|MMI 480||2,5 (3,4)||480||160||2160|
|MMS 520||4,5 ( 6,0)||520||190||2340|
|MMS 660||7,5 (10,1)||660||230||2880|
|MMI 660||7,5 (10,1)||660||230||2880|
|MMS 720||11,0 (14,8)||720||255||3240|
|MMS 780||15,0 (20,1)||780||285||3600|
|MMI 780||15,0 (20,1)||780||285||3600|
|MMI 860||22,0 (29,5)||860||325||3930|
|MMI 960||29,5 (39,6)||960||370||4385|
|MMI 1070||42,0 (56,3)||1070||390||4890|
|Model types: |
MMS: pitch actuator built on the gearbox output flange
MMI: pitch actuator built in the propeller hub
Propeller pump and nozzle
The Masson Marine propeller pump is a combination between stator (done with 7 blades) and a rotor (optimized propeller).
The water flow is pre-rotated and accelerated by the stator before being in contact with the propeller.
It leads in a better spread of the pressure on the whole surface and can increase the total propulsion efficiency by 15%, keeping the same propeller diameter.
The nozzle is a device used for ducted propellers in order to increase the speed of the flow around the propeller.
This device leads to an increase of 20% of the thrust for the same size of propeller.