July 2017

SCHOTTEL ProAnode enhances corrosion protection and optimizes thruster performance


The new position in the tail of the nozzle not only shields the anodes, but also offers additional operational potential as it contributes to the optimal hydrodynamic flow of the nozzle.

The first steerable thruster to be equipped with the newly developed and patented SCHOTTEL ProAnode will be delivered to a Russian customer. Its new form and position set new standards in corrosion protection, thereby extending the lifecycle of the thruster. Furthermore, moving the position of the anode from the outside surface into the cross-section of the nozzle tail leads to subsequent operational benefits, such as reduced flow interference, resulting in fuel savings.

 

Enhanced corrosion protection

SCHOTTEL’s core idea was to remove the anodes from the outside surface of the nozzle, where they are prone to being knocked off by flotsam, such as wood or ice, or even by slight ground contact. Loss of the anodes is usually only discovered during maintenance downtime, by which time corrosion might already have become a problem. Plus, depending on the nozzle’s diameter and the anode’s material, anodes for up to five years cathodic protection against corrosion can be integrated into the nozzle. This enables a reduction of additional anodes for the hull or other thruster parts.

 

Optimization of hydrodynamic flow

The new position in the tail of the nozzle not only shields the anodes, but also offers additional operational potential as it contributes to the optimal hydrodynamic flow of the nozzle. As its smooth overall surface reduces flow interference, it meets the customer’s need for highly efficient propulsion systems. It results in lower fuel consumption and pays off in terms of reduced operating costs.

 

Technological enhancement available from now on

The SCHOTTEL ProAnode is available with SCHOTTEL Rudderpropellers from now on. This latest technological enhancement is one example of the continual process of product improvements that the international propulsion specialist makes available to customers.