Two different propeller designs : MMS and MMI

MMI Design

Masson-Marine offer two types of CPP design, see below MMS design:

MMI (Masson-Marine Integrated) : The servo cylinder controlling the blade pitch angle of the propeller is integrated into the hub. The advantage of this system is that power is transmitted to the blades through hydraulic pressure lines. This avoids the high amount of strain put on the control rod used in the MMS system. As such, this arrangement is most suitable for propellers that transmit high power. Since our propellers are provided with a leak detection device, damage does not necessarily mean dry-docking of the ship.

Please have a look at the sketche for better understanding.