Two different propeller designs : MMS and MMI

MMS Design

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

MMS (Masson-Marine Separated): the servo cylinder controlling the blade angle is located on the propeller shaft, inboard. The advantage of this system is that maintenance operations do not require the dry-docking of the ship.

Please have a look at the sketche for better understanding.