Products for Marine Propulsion Systems

Retractable Azimuth Thruster

High maneuverability and station-keeping capability


Multiple functions

Usable as Tunnel Thruster and Azimuth Thruster

Full power

From 100 to 2,500 kilowatts

Green propulsion

Suit for biodegradable lubrication oil

What can Retractable Azimuth Thruster provide?

The Retractable Azimuth Thruster operates in full azimuth mode when deployed as part of an auxiliary propulsion system to increase the vessel’s station-keeping capabilities. A tunnel can be incorporated in the design of the outer well so that the thruster can be used as bow thruster as well. Typical applications for the propulsion system are OSV, research vessels, jack-up, stand-by and rescue vessels. The thruster is designed with a performance range 100-2,500 kW.


All ZF Azimuth Thrusters are developed and produced in-house and thus, can be customized according to the customer’s wishes.
  • L- or Z-drive
  • Control system ThrusterCommand is integral part of the propulsion system
  • Well mounted from top in the vessel
  • Well height can be chosen to best suit the vessel design
  • Tunnel Thruster mode
    • Optionally use as a transverse thruster when fully retracted in the hull
  • Drive options
    • Diesel engine, using upper gearbox and wet or dry operated clutch (Z-drive)
    • Electric motor, both horizontal (Z-drive) and vertical (L-drive)
    • Hydraulic motor (L-drive)
  • Steering of the thruster
    • Electric or hydraulic steering
  • Cooling
    • Sea water
    • Fresh water
  • Propeller
    • Open type fixed pitch propeller > clockwise (CW) and counterclockwise (CCW)
    • Fixed pitch propeller with nozzle
      • GS Nozzle > optimized for speed
      • GT Nozzle > optimized for thrust
      • GTR Nozzle > optimized for reverse thrust
      • Nozzle equipped with strips to install a closing plate
  • Rope cutters
  • Anodes on lower gearbox and nozzle to protect the thruster
  • Classification by all major classification societies
  • Available with Condition Monitoring System

Product Configurator

Here you can find technical information to define the product best suited to your application with the Marine Product Selection Guide.
Select your solution here

Further Information

Press Release: ZF Retractable Azimuth Tunnel Thruster Technology for "R/V Roger Revelle"


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