Masson Marine Reduction gearboxes,Controllable/fixed pitch propellers, azimuthal thrusters

Marine Transmission manufacturer  since 1908

Marine transmission manufacturer since 1908, Masson Marine is a supplier of complete propulsion packages:

•  Reduction gearboxes, reversing or non-reversing, for engine powers from 300 kW to 4.500 kW, in vertical or horizontal offset or coaxial versions. Gearboxes also available: twin input and dual speed ranges.
• Controllable pitch propellers and fixed pitch propellers with diameters up to 5 m
• Azimuthal thrusters


Masson Marine’s skills and applications

 Masson’s specific skills are:

• An integrated workshop:  machining, teeth grinding, heat treatment, assembly and tests in a single location.
• Services of design & engineering, hydrodynamics, noise & vibration analysis, commissioning and maintenance.
Masson Marine is very active worldwide thanks to its efficient international network of local agents.

Sailing boat SANTA MARIA MANUELA – 68 m1 ESY281 Geartbox1 Masson Controlable Pitch Propellers,MMS 480, Ø1800




Main  applications are :Fishing vessels, Tow and push Tugs, Tankers, Passenger transport ships, Sailing boats, and others…


Tug MUSTANG – 30 m2 MM W20500 Masson Gearboxes
More than 27000 gearboxes and 1000 propellers have been delivered during the last 40 years, most of them are still in operation due to the serious of the company and the quality of Masson Marine’s products.


© Marine NationaleDiving tender ALIZE – 60 m2 MM W18000C Masson Gearboxes
Masson Marine’s range enlargement 

Masson Marine recently developed and sold first models of Azimuthal thruster MML55.

Its’ main features are: maximum maneuverability, optimum efficiency, economical operation, Installation to save space in the ship and easy maintenance. A product to be adopted!

Also involved in this product: Propeller pump concept. This new development is increasing propulsion efficiency thanks to a nozzle driving the water, making it rotate and come faster on the whole propeller area.  This process leads consequently to a decrease of the wake effect on the propeller.

Compared to a conventional propeller, the “propeller-pump” concept delivers average propeller efficiency 15% higher, with a diameter 20 to 30% less.