WTT banner
    Wärtsilä Transverse Thrusters

    Contact us

    Wärtsilä Transverse Thrusters
    It’s all about maneuvering and station keeping

    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.

    Key benefits

    • Superior hydrodynamic performance for high thrust - diameter ratio
    • Robust, reliable and maintenance friendly design
    • Easy installation; high level of integration
    • Maintenance friendly design
    • Wärtsilä ProTouch controls with ergonomic levers and intuitive touch screen displays or push-button panels
    Access 3D models & drawings

      Application

      • Wärtsilä transverse thrusters are available in a range from 400 kW to 5500 kW for applications in numerous types of ships, including merchant vessels, cruise 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 station 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.

      Merchant

      • Cost per kW - 15% reduced cost (CAPEX) per kW*
      • Environmental compliance - Compatibility with environmentally acceptable lubricants (EAL) - Ensures compliance with environmental regulations such as US EPA VGP2013 and DNV CLEAN DESIGN
      • Smaller footprint - Integrated hydraulics and fine filtration ensures longer lifetime for gear, bearings and other rotating components
      • User centric interface - ProTouch control system - bus connections for simplified installation and integration with other equipment control, monitoring and alarm systems 
      • Global support - Service and delivery available when and where you need it
      • Reliability - Robust design for reliable operations in demanding environments and low operational cost
      • Experience - over 1,250 Wärtsilä Transverse Thrusters delivered or on order in the Merchant segment, of a total of 3,250 units
      • Flexible Options – WTT are available in CPP and FPP giving you the option to select the right system to meet your needs.

      *Compared to a standard Wärtsilä Transverse Thruster with the same propeller diameter. The improvement may vary depending on configuration, fuel, vessel and currency.

      Options

      • Controllable or fixed pitch propeller upto WTT-40 type; CP propeller for WTT-45 and CT3500 types
      • Manoeuvring (AUX) or Dynamic Positioning (DP) application
      • Redundant pumps and/or lubrication filters
      • Compatible with environmentally acceptable lubricant (EAL) for EPA VGP 2013 compliance or CLEAN notation compliance
      • Face type seal or Air barrier seal for WTT-21 and up
      • Tailor-made tunnel with tunnel ends cut according to hull form and additional circular or longitudinal stiffeners
      • L-drive with intermediate shaft and separate E-motor foundation
      • De-mountable, low noise, horizontal drive variants
      • Package with electric motor and starter

      Technical Info

      Range and dimensions

       Type Electrical Frequency (Hz)
      		  Input Speed (rpm) 
      		  Maximum Power 1 Propeller Diameter (D) (mm)
      		 Length (L) 
      (mm) 
      		  Weight 2
      (kg)
         
      		Manoeuvring
      AUX/Merchant (kW)       		   Dynamic Positiong
      DP (kW)      		      
      CT/FT125 H  60
      50      		 1780
      1480      		 610
      510      		 600
      500      		 1250 1550 2800
       CT/FT150 H 60
      50      		 1780
      1480      		 880
      735      		 780
      650      		 1500 1800 4150
       WTT-11 60
      50      		 1180
      980      		 1100
      1100      		 1000
      1000      		 1750 1970 5750
       WTT-14 60
      50      		 1180
      980      		 1450
      1450      		 1300
      1300      		 2000 2195 8000 
       WTT-16 60
      50      		 1180
      980      		 1650
      1650      		 1490
      1475      		 2200 2115 10100 
       WTT-21 60
      50      		 1180
      980      		 2100
      2200      		 1825
      1825      		 2400 2275 12000
      WTT-24 60
      50      		 880
      980      		 2600
      2600      		 2150
      2150      		 2600  2390 13900
       WTT-28 60
      50      		  880
      735      		 3000
      2800      		 2400
      2400      		 2800 2970 20200
      WTT-32 60
      50      		 710
      735      		 3300
      3300      		 2800
      2800      		 3000  3285 25400
      WTT-36 60
      50      		  710
      735      		 3600
      3600      		 3200
      3200      		 3200/3300  3350 29400/29700
      WTT-40 60
      50      		 710
      735      		 4000
      4000      		 3600
      3600      		 3400 3520 32800
      WTT-45 60
      50      		 710
      735      		 4800
      4800      		 4050
      4050      		 3600  3800 40400
      CT3500 60
      50      		 590
      590      		 5500
      5500      		 5000
      5000      		 4000   4300 63700 
      1 Maximum power level is valid for uni-directional rotation. Depending on propeller type and class society, lower power levels may apply.
      2 Version with CP propeller including a standard tunnel with E-motor support., excluding E-motor.

      Weights and dimensions

      WTT-weights-and-dimensions

      Power range

      WTT-power-range

      Product hologram

      Wärtsilä Marine. Let's connect.
      Contact us
      © 2024 Wärtsilä