USA west coast port. Aſter a full underwater inspection was performed by an SSA team from Vancouver, a class- approved temporary repair was employed to put the vessel back into service. Tis repair included the fabrication and installation of a temporary bulbous bow on the vessel so it could continue to trade until a convenient period was available for off hire to initiate a permanent repair. The repair included the removal, and


fairing in, of all areas of the shell plating with sharp edges, the control or removal of all cracks found in vessel plating and structures, the fabrication and installation of an internal framing system, the installation of a 5m x 300mm x 13mm plate along the bow’s centre line. Tis added strength and was followed by the installation of a shaped 6mm plate - 9m by 5m by 3.5m - which was fastened to the vessel and an internally developed framing system. Once the approved engineering solution was in place and evaluated by the attending class surveyor, SSA’s diver - technicians filled the affected area and the vessel’s hull 200mm above the water line with almost 15m3


of


An SSA diver working on a rudder repair.


concrete and also covered all welded areas with a two-part epoxy coating. According to SSA, demand for underwater


maintenance and repair services has continued to remain strong in 2010. “With operators focusing all of their resources on


keeping their vessels in service, listening to vessel owners and understanding their vessel itineraries and constraints, so that repairs and equipment maintenance is performed without impacting on the vessel’s schedule, is vitally important,” said Mr Shilling. SRCT


Shiprepair and Conversion Technology 3rd Quarter 2010


27


Feature 5


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