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Belzona® Repairs Voith Schneider Propulsion Unit



Marine (MRNE)



Ships and Offshore Structures (SOS)


Customer Location:

Ferry, Gourock, UK


Application Date:

September 2014


Application Situation:

A Voith Schneider unit from a passenger ferry.



The combination of sea water and erosion from silt and sand was creating an erosion-corrosion cycle. Extensive metal loss had been noticed on the face of the equipment and on the inner rims. 



Belzona 1311 (Ceramic R Metal)

Belzona 1321 (Ceramic S Metal)





Application Method:

The application was carried out in accordance with Belzona System Leaflets SOS-1 & 2. The unit was grit blasted and salt tested. The inner rim was then built up using a pre-fabricated metal former. The face was also built back up using Belzona 1311. Belzona 1321 was then applied to coat & protect the unit from future erosion/corrosion.


Belzona Facts:

Replacement of the unit would have been more than £100K. Welding and then machining would have been very difficult due to the size and geometry of the piece. The Supply and fit repair was carried out on the customer's site for £3,000.


Photographs Description

1. Voith unit before work started 2. The damage on the inner rim 3. Belzona 1311 applied & former in place 4. Former removed, rim rebuilt and face coated with Belzona 1321

Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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