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Wärtsilä Transverse Thrusters

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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

    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

     TypeElectrical Frequency (Hz)
     Input Speed (rpm) 
     Maximum Power 1Propeller 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
    125015502800
     CT/FT150 H60
    50
    1780
    1480
    880
    735
    780
    650
    150018004150
     WTT-1160
    50
    1180
    980
    1100
    1100
    1000
    1000
    175019705750
     WTT-1460
    50
    1180
    980
    1450
    1450
    1300
    1300
    200021958000 
     WTT-1660
    50
    1180
    980
    1650
    1650
    1490
    1475
    2200211510100 
     WTT-2160
    50
    1180
    980
    2100
    2200
    1825
    1825
    2400227512000
    WTT-2460
    50
    880
    980
    2600
    2600
    2150
    2150
    2600 239013900
     WTT-2860
    50
     880
    735
    3000
    2800
    2400
    2400
    2800297020200
    WTT-3260
    50
    710
    735
    3300
    3300
    2800
    2800
    3000 328525400
    WTT-3660
    50
     710
    735
    3600
    3600
    3200
    3200
    3200/3300 335029400/29700
    WTT-4060
    50
    710
    735
    4000
    4000
    3600
    3600
    3400352032800
    WTT-4560
    50
    710
    735
    4800
    4800
    4050
    4050
    3600 380040400
    CT350060
    50
    590
    590
    5500
    5500
    5000
    5000
    4000  430063700 
    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

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    References

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