Wärtsilä Transverse Thrusters

The combination of high thrust values with compact dimensions provides additional thrust for a wide range of vessels types. In auxiliary applications, transverse thrusters support the mooring or harbour operations of merchant cargo vessels. When applied in Dynamic Positioning systems, transverse thrusters extend the DP capability of, for example, offshore supply vessels.


  • High thrust
  • Compact and reliable design
  • Easy installation, with all hydraulic components pre-installed on the E-motor foundation and CAN-open connections to the controls system
  • Easy maintenance


  • Controllable or fixed pitch propeller
  • Auxiliary or Dynamic Positioning application

    • Wärtsilä transverse thrusters are available in a range from 400 kW to 3550 kW for applications in numerous types of ships, including merchant vessels, offshore support vessels, and offshore construction vessels.
    • Transverse thrusters, also known as bow thrusters, stern thrusters or tunnel thrusters, provide a side force, or transverse thrust, to support mooring operations or position keeping.
    • Transverse thrusters are available for auxiliary or AUX usage, which is mostly applicable with merchant vessels to support harbour manoeuvring and mooring operations. Where the transverse thruster is part of a dynamic positioning (DP) system, the rating for DP use applies.

    Example configurations

    Merchant cargo vessel


    ·         1100 kW

    ·         CP propeller

    ·         Auxiliary application

    ·         Diesel-electric drive

    ·         L-drive

    Wärtsilä transverse thrusters application 1

    Offshore Construction vessel (OCV)


    ·         4 x 1500 kW

    ·         CP propeller

    ·         Dynamic Positioning application

    ·         Diesel-electric drive

    ·         L-drive

    Wärtsilä transverse thrusters application 2

    Key benefits
    Bevel-gear driven propeller in a transverse tunnel.
    • Controllable or fixed pitch propeller
    • Maximum thrust with small diameter
    • Robust reliable design
    • Easy installation
    • Standard and demountable versions available
    • Applications for dynamic positioning and manoeuvring purposes
    Technical Info
    Wärtsilä Transverse Thruster Power Range and Dimensions
    Wärtsilä transverse thrusters dimensions
    Weights and Dimensions
    Transverse thrusters technical info
    Power range
    Wärtsilä Transverse Thruster Range
    • El Coquí and Taíno
      El Coquí and Taíno will be the very first LNG powered, American flagged, container RoRo ships. They will operate between Jacksonville, Florida and San Juan, Puerto Rico on a weekly rotational basis.

      El Coquí and Taíno

    • Stena Polaris
      The propellers on Stena Polaris have been technically adapted for operation in icy waters.

      Stena Polaris

    • Gaschem Nordsee
      Wärtsilä supplied the complete propulsion systems for the Gaschem Nordsee designed for the transportation of LPG (liquefied petroleum gas) or (LEG) liquefied ethylene gas.

      Gaschem Nordsee

    • Reynaert
      The Reynaert entered service in 2007. The major part of the pumping power is delivered by the three Wärtsilä 6L26 engines. The ship is also equipped with two Wärtsilä controllable pitch propellers, one Wärtsilä transverse thruster and Wärtsilä propulsion controls.


    • Endeavour
      The Endeavour, launched in 2003, is one of the world’s quietest research vessels, and is significantly quieter than the ICES 209 Co-operative Research Report recommendations. (photo courtesy of Michael Page)


    • Brave Tern
      Brave Tern is a heavy-lift jack-up vessel built for offshore wind turbine installations in water depths up to 142ft. Wärtsilä's scope of supply includes four generating sets - one 6-cylinder, two 9-cylinder, and one 12-cylinder – all of which are based on the Wärtsilä 32 engine, plus the bow thrusters, plus medium and low voltage switchboards, frequency converters and the power management system.

      Brave Tern

    • Brabo
      The Brabo entered service in 2007. The major part of the pumping power is delivered by the two Wärtsilä engines – a Wärtsilä 12V32 and a Wärtsilä 8L32.


    • Oasis of the Seas
      In 2009, Royal Caribbean International took delivery of the world's biggest cruise ship: Oasis of the Seas.

      Oasis of the Seas

    • HMNZS Wellington
      For Offshore Patrol Vessel HMNZS Wellington, commissioned in 2010, Wärtsilä supplies two controllable pitch propellers, the shafting systems and a bow thrusters. (photo courtesy of 111 Emergency)

      HMNZS Wellington

    • Bitflower
      Delivered in 2003, the tanker Bitflower features a complete Wärtsilä machinery installation incorporating a Wärtsilä 6L38 main engine.


    • Algoma Equinox
      Algoma Central Corporation has chosen Wärtsilä to supply complete propulsion systems with integrated fresh water scrubbers for six Great Lake vessels with an option for two more. “The capability to provide both an integrated equipment package and global service support was a major reason for choosing Wärtsilä.” Al Vanagas, Senior Vice President, Algoma Central Corporation

      Algoma Equinox

    • Normand Installer
      Delivered in 2006, the Offshore Construction Vessel Normand Installer by Wärtsilä Ship Design is equipped with a complete Wärtsilä package.

      Normand Installer

    • Viking Grace
      Wärtsilä supplied the propulsion machinery for the ‘Viking Grace’, the world’s first LNG powered passenger vessel.

      Viking Grace

    • M/S Hammerodde
      Energopac retrofit maintains speed for M/S Hammerodde.

      M/S Hammerodde

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