A steering VFD (Variable Frequency Drive) is an electronic device used to control the speed and
torque of electric motors in a ship's steering system. It allows for precise control of rudder movement,
offering benefits such as reduced power consumption, smoother steering, and increased system
reliability. Z-drive marine propulsion, also known as an azimuth thruster, is a type of marine propulsion system
that uses a steerable thruster to provide both propulsion and steering to a vessel. It allows for 360-
degree rotation of the propeller, eliminating the need for a rudder and offering superior
maneuverability. The name "Z-drive" comes from the Z-shaped path the power takes from the engine
to the propeller, achieved through a combination of gears and shafts
