KHIA headerKnow-How in Action


Belzona® Protects Propulsion Unit On Ferry



Marine (MRNE)



Ships and Offshore Structures (SOS)


Customer Location:

Ferry, Ontario, Canada


Application Date:

February, 2010


Application Situation:

Nozzle of drive unit eroded due to cavitation.



Erosion had worn through nozzle. Welding considered but high risk of distortion and expensive.



Belzona® 1311 (Ceramic R Metal)

Belzona® 2141 (ACR Fluid Elastomer)



Mild Steel


Application Method:

Application was carried out in accordance with Belzona Know-How System Leaflets SOS-1 & 2. After grit blasting, Belzona® 1311 was used to replace eroded metal. Belzona® 2141 system was then applied to the nozzle extending the application over both the leading and trailing edges to give maximum protection.


Belzona Facts:

Welding was an option but cost would have been $5500 and the distortion would have been a problem. Total cost using Belzona system was less than $3800 with no risk of distortion. In addition unit protected from future erosion corrosion.


Photographs Description

  1. Rolls Royce drive unit on Ferry
  2. Nozzle of drive showing corrosion and erosion from cavitation
  3. Inner surface grit blasted and erossion damage built up using Belzona® 1311
  4. Apllication of Belzona® 2141 completed
Case study pic one


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