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case studies

propeller repairs

Accidents happen at sea; our task is to minimise their impact. This propeller was damaged in voyage and a team was sent to crop the damaged section with guidance from Stone Manganese, the leading propeller manufacturer. Divers removed the damaged part and precisely trimmed a calculated section of opposing blade, removing out of balance forces and allowing over 85% of design performance until a permanent repair could be carried out.
New tips were designed and made whilst the vessel was at sea and despatched to the next port of call. With cooperation of local engineers, the new tips were welded to the blades and the whole propeller polished and re-profiled. The result is almost indistinguishable from a new propeller, saving hundreds of thousands of pounds in lost voyage time and the cost of replacing the damaged propeller.

RFA vessel emergency repairs

Recently, at extremely short notice, Dive Technologies provided an emergency response Diving Team to carry out repairs to a Royal Fleet Auxiliary vessel which was in severe difficulties and taking in seawater. Due to time and operational constraints the vessel could not be dry docked and all repairs had to be achieved with the vessel afloat. Navy divers made several attempts to solve the problem but the task was beyond their remit. Within hours of being called out, the Dive Technologies' team were working round the clock to complete repairs to the leaking Stabiliser/Gland Assembly.
Working in adverse conditions, our divers sealed the stabiliser shaft with neoprene wraps to prevent further water ingress. This enabled other members of the team to pump water from the Stabiliser Compartment and carry out inboard welding and fabrication repairs. Following completion of the inboard repairs, a permanent seal collar was fitted outboard to prevent any further occurrence. The Team received numerous commendations for their skilled and professional workmanship and for the speed and quality of their repairs.
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