Process of Ship Dry Docking-Completely Explained

A dry dock is used for the maintenance, construction, and repair of ships, boats, and watercraft. The ship or vessel is brought to the service yard dry land so that the hull can be cleaned and inspected. As this is both the regulatory and preventive requirement of the industry, the procedures need to carry out in adhering to the standard process.

Once the ship enters the dry dock, the gates are closed and the water is drained out. Now the inaccessible parts that are submerged in water like the hull, propeller, rudder etc are ready for eliminating barnacles, corrosion and renovating of the hull of the ship.

Before the vessel or ship is rested on the block, a specialized team of divers ensures that the block structures are in the correct location. Then the cables are ranged on the dock bottom on the dry dock. As this is done, the anchors and cables are inspected to check the condition and defects are either repaired or replaced.

dry dock repair

Now comes the important part of the dry docking-hull painting. The process of hull painting consists of washing, blasting, and painting of the vessel. This is the main reason for drydocking, as it gives the ship the smoothness for efficient vessel operation for the next five years.  According to a study, the doing hull painting can help in saving the fuel consumption 20% of the annual budget. Washing with high pressure removes the marine growth and chlorides. For removing the rust or defective paints the process of blasting is used.

Finally, as the entire vessel is cleaned the underwater side painted with anti-fouling paint. Next is opening sea chests and overhaul of sea values. This area provides water intake of seawater for cooling the systems in the engine room. As this process goes on, the other team carry out maintenance work on engines, pumps, tanks and cargo spaces as needed.

When the work is satisfactorily completed, the dock is flooded and the vessel is prepared for departure.