Bow thruster

タイトルまたは説明

Bow thrusters usually have one or more tunnels built into the bow, below the waterline in order to improve manoeuvrability. Depending on the type of vessel, the range of application for bow thrusters extends from brief docking and casting-off in ports with a limited number of operating hours every year up to continuous operation under extreme load conditions in demanding offshore applications with dynamic positioning. Allow the ship to dock without the assistance of tugboats, saving the costs of such service
 
BowThrusters can be powered by diesel engines, electric motors or hydraulic motors.
Electric motors are included optionally in the scope of supply. The prime mover can be connected either horizontally or vertically and thus incorporated optimally into the naval architectural design.
When fixed-pitch propellers are used, electric and hydraulic motors allow the direction of thrust to be reversed.
An additional reversing gearbox is required if the thruster is powered by a diesel engine.
 
Thrust is the decisive criterion of a bow thruster. Therefore attaches great importance to an optimum propeller design that is individually adapted to the vessel geometry in each case. At the same time, the propeller design takes into account any special requirements in terms of noise level that are relevant for the application. A major parameter for the effectiveness of a bowthruster is the size of the gap between the tunnel and the propeller, which has reduced to a minimum on all models.