Bow thrusters are essential in providing good vessel control in docking, at slow speed, in narrow water manoeuvring, emergency steering and in position-keeping.
Bow thrusters can be powered by diesel engines,electric motors or hydraulic motors.
An additional reversing gearbox is required if the thruster is powered by a diesel engine.
Common brand of motor:ABB,SIEMENS,SCHNEIDER ETC.
Common brand of Frequency converter:ABB,DANFOSS,SIEMENS,SCHNEIDER ETC.
When fixed-pitch propellers are used, electric and hydraulic motors allow the direction of thrust to be reversed.