Elica di prua per navi (a tunnel)
OFP Verhaar Omega BV

An OFP transverse thruster is a tunnel thruster with a fixed pitch propeller. In most cases, fixed pitch propellers are used for variable and reversible shaft speeds. OFP transverse thrusters are driven either electrically, hydraulically or by means of a diesel engine.

The thrust direction is controlled by reversing the direction of the drive motor, or – with a diesel engine – via a reverse gearbox. The thrust force is controlled by adjusting the speed of the driveshaft.

OFP transverse thrusters are used on all types of ships with sufficient draft to guarantee proper functioning.

Standard Components of the OFP transverse thruster
Robust and hydrodynamically streamlined gearbox with built-on propeller
Rigid and solid tunnel section provided with stainless steel liner in the propeller’s blade tip area, protecting the tunnel against electrolytic corrosion
Gravity oil tank including hand pump
Flexible shaft coupling between the output shaft of the drive motor and the input shaft of the thruster unit, eliminating possible shaft misalignments and reducing vibration and noise
Features OFP transverse thruster
Intelligent design (easy to install, maximum reliability and minimum downtime)
Optimum input-output ratio (maximum thrust efficiency and performance)
Rigid and solid construction (reducing vibration and noise)
Optimum design of propeller keeps cavitation volume low (maximum thrust efficiency and minimizing noise)*
* Upon request our thruster units can be supplied with a five-blade propeller for ‘silent’ operation.