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VOL XXII, NO 3, ELITE

Belzona® Protects Fast Ferry Bow Thrusters From Cavitation

 
 

Industry:

Marine (MRNE)

 
 

Application:

Ships and Offshore Structures (SOS)

 
 

Customer Location:

Scandinavian Fast Ferry operator

 
 

Application Date:

January 2002

 
 

Application Situation:

Bow Thrusters from a 900 Passenger High Speed Service Ferry capable of 38 knots.

 
 

Problem:

Cavitation problems had manifested themselves in the Port and Starboard Bow Thruster Tunnels. Annual repairs had been attempted with glass flake coatings and Belzona® 1341, but none had been ideal allowing metal loss to continue in the tunnel.

 
 

Products:

Belzona® 1111 (Super Metal)
Belzona® 2141 (ACR-Fluid Elastomer)

 

Substrate:

Aluminum

 
 

Application Method:

Following removal of the existing coatings Belzona® 2141 was applied in accordance with a modified version of SOS-1 and SOS-2.

 
 

Belzona Facts:

Subsequent annual inspections have shown the Belzona® 2141 to provide outstanding cavitation protection. After nine (9) years in service the Belzona 2141 remains in excellent condition apart from a few mm² of mechanical damage. The client is extremely pleased with the application which has allowed them to extend the annual docking cycle to a bi-annual one

 
 

Photographs Description

Localized damage to Belzona® 1341 (Port)  Extensive damage to Glass Flake lining (Starboard)  Belzona® 2141 (Portside)  Inspection after 5 years service

 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 Case study pic four

 

 
 
For more information about Belzona visit: www.belzona.com