Dock repair agent

Dock repair is an important link in repairing ship equipment and restoring its performance. During long-term voyage, the hull surface below the hull waterline, especially the bottom, will rust and grow algae and shellfish, which will cause the underwater part of the hull and the surface of the hull to be dirty and rough. The dirty bottom of the ship will increase the resistance of navigation and reduce the speed of navigation. In addition, ship hull will be deformed or damaged in the event of marine accident, and regular overhaul of submarine valve box, submarine valve and outboard discharge valve will be required. Therefore, the dock repair works mainly include the decontamination, rust removal and painting of the hull, the welding repair of the damaged parts of the hull, and the disassembly, inspection and repair of submarine valves, shafting, propellers and rudders.
Mainly dock repair works of marine engine: The main items of dock repair are inspection, cleaning, rust removal, painting and repair of the parts below the water line. The main items are: maintenance of seabed valve box and seabed valve; maintenance of each outgoing valve; maintenance of boiler sewage valve; inspection and measurement of propeller; inspection and measurement of tail shaft bearing and tail shaft; measurement and repair of rudder pin and rudder bearing.