Underwater Services & Diving

Underwater services and diving providers carry out commercial diving work on a vessel's hull and underwater fittings without drydocking — in-water hull and propeller inspection, propeller polishing, underwater repairs to sea chests, rudders, and thrusters, and class-approved in-water surveys carried out in place of a scheduled drydock bottom survey.

Divers work from a support vessel or the berth itself, using underwater cutting, welding, and inspection techniques suited to work below the waterline, and can issue survey reports accepted by classification societies in lieu of drydocking for eligible vessels. This is distinct from the general in-water hull cleaning carried out to remove fouling, though the same diving teams often perform both, and from the drydock facilities used when a defect cannot be repaired underwater. Buyers commission diving work to defer or replace a drydock visit, or to investigate and fix a specific underwater defect, comparing providers on diver certification, equipment, and response time at the port. It sits within the Repair, Maintenance & Shipyards category group on PortProcure.

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