Circumferential Thruster

Mapalu - Obwodowy ster strumieniowy

Circumferential Thruster responds to the problem of inefficient use of thrusters currently used on vessels and on the negative effects of impact on the marine environment due to this.

It is a product innovation characterized by new features on an international market scale. It is a proprietary design, characterized by the lack of a rudder tunnel, which is the main distinction from competing products. It will be able to be used both in newly produced units and as part of modernizing existing units.


  • It has two motors (two screws), each providing half the power of the system. In the event of a failure of one of the controls, the system will continue to operate and the unit will remain in control.

  • The configuration of two motors (two screws), where each provides half the power of the system, means that much smaller sizes of screws are used, and therefore cheaper.

  • In such a system, when working on the suction from the opposite side of the wharf and with the thrusters off, from the side of the wharf, there is no outlet hydrodynamic stream devastating the wharf, and therefore contributes this to the reduction of cost-intensive investments related to their

  • It has the ability to generate thrust at any speed, this allows, among others performing maneuver “underway crabbing” regardless of speed. This advantage contributes to increasing the safety of navigation on every type of sea basin.

  • Due to the power distribution on the two sides, the total power of the rudder is divided into two engines, each of them is therefore half as much as competing designs with one large power unit. For these reasons, the motors will usually be low voltage motors. This results in greater operational safety as well as lower operating costs and lower crew qualification requirements.

  • The circumferential thruster may be applicable to all types of vessels from 7m and above with mechanical drive, on which there is a need to use the thruster, therefore it is characterized by high scalability (universality).

  • The lack of angle gears is another valuable advantage, as it reduces the failure of the thruster and reduces maintenance costs.

  • The absence of a transverse thrust tunnel increases the loading space and improves access to places in the fore or aft section that until now have been blocked by the tunnel’s internal space.