Machine for performing work on land and/or in water
Machine provided with internal combustion engine and generator
Magnetic differential displacement device with distributing...
Magnetohydrodynamic boundary layer control system
Main switch apparatus of small watercraft
Man-powered boat propulsion device
Man-powered hydraulic steering system
Man-powered propulsion device
Man-propelled hydrofoil boat
Manageable safety dinghy
Manatee protection installation on a boat
Maneuvering device for sailing boats
Maneuvering enhancer for twin outboard motor boats
Manifold and water trap system for marine engine
Manifold arrangement for outboard motor
Manual lift means for marine propulsion device
Manual propulsion mechanism
Manually driven fitness device for exercise on water surface
Manually driven water propulsion device
Manually operable boat propeller