Case Studies

Review our unique underwater ship repair and maintenance case studies to assist in decision making. You can contact us for more information at any time.

HULL Cleaning

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Propeller Polishing

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Underwater Seal Replacements

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Rudder/Stabilizer Repairs

SGS solves serious problems: Assisting a large, fully laden post-Panamax container vessel with steering issues

SGS solves serious problems: Assisting a large fully laden Post-Panamax container vessel with steering issues. SGS works with port authorities, class, and manufacturers to provide class-approved in-water float out removal, repair, and refit of a 110 mt rudder. Find out how our underwater inspection and survey services deliver practical, cost-effective solutions to a complex offshore problem. SGS works with port authorities, class, and manufacturers to provide class-approved in-water rudder float out removal, repair, and refit of a 110 mt rudder. Helping owners safely reduce their risk exposure and related costs that would include diversions, delays, and downtime.

Galvanic Corrosion on Rudders

3 months out of dry dock, galvanic corrosion caused heavy cavitation/ erosion damage on PORT and STBD side rudders.

Underwater Hull Penetrations

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Underwater Propeller Repairs

Underwater Propeller Blade Straightening – Cold Static Loading

SGS can restore your propeller blades as a permanent repair, to OEM design geometry by cold static loading with our underwater propeller blade press.

Underwater Weld Repairs

During cargo operations, a submerged pile pierced through the hull. SGS worked together with owner and class to develop repair plan that included the design and installation of an engineered cofferdam.

Offshore Oil & Gas

A Blue-Chip oil & gas company incurred several defects and cracks in a critical attachment member of an FPSO’s hull – these defects required repair to allow continued operation.

Skeg Ripped from Azipod

3 month out of dry dock, galvanic corrosion caused heavy cavitation/erosion damage on PORT and STBD side rudders.

Bilge Keel Repair on FPSO

Design flaws together with poor workmanship caused the bilge keel to fracture during operation in several locations. SGS worked together with the owner and Class to perform permanent underwater wet weld repair on the fractures, without interrupting the production.

Underwater Exchange of Demountable Thrusters

No items found.

Tunnel Thruster Repair/Replacement

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Rudder / Stabilizer Repair

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Scrubber Overboards & Sea Chest Installations Afloat

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Looking for underwater maintenance and repair services?

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Europe: +32-3-541-45-41
Asia: +65-6397-5808

Case Studies

HULL Cleaning

Propeller Polishing

Underwater Seal Replacements

Rudder/Stabilizer Repairs

SGS solves serious problems: Assisting a large, fully laden post-Panamax container vessel with steering issues

Galvanic Corrosion on Rudders

Underwater Hull Penetrations

Underwater Propeller Repairs

Underwater Propeller Blade Straightening – Cold Static Loading

Underwater Weld Repairs

Hull Breach on Tanker

Offshore Oil & Gas

Skeg Ripped from Azipod

Bilge Keel Repair on FPSO

Underwater Exchange of Demountable Thrusters

Tunnel Thruster Repair/Replacement

Rudder / Stabilizer Repair

Scrubber Overboards & Sea Chest Installations Afloat

Looking for underwater maintenance and repair services?

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