The Kolkata Dock System also includes impounded dock systems at Netaji Subhas near kidderpore which handles mostly containers and Haldia. The shipyards Kolkata Dockyard, are at the face of the River Hooghly, are among the oldest in the country. Their origin dates back to the period following the British East India Company in 1870, following the shift of power from the company to the British crown and new ports were needed. Throughout its history, the yards have built vessels for the Indian Navy. At the peak of its activity has occupied more than 16% of the total number of vessels.
The one where repairing is also called arsenal, and has also generally dry dock ; the one where they make and repair small boats is also called the boatyard, named the inclined plane when you pull in dry boats. The plant structure, the size and configuration of establishments varies according to the type of activity that is carried out and the size of the boats that are treated.
The yard has a bridge crane in the workshop naval and cranes of various types and flow for the assembly of the hull and of equipment components; a large yard and warehouses for the storage of artifacts and goods; of airports or docks where the ships are assembled, and construction of piers where the ships are completed after the launch .
The shipyards are building plants that extend over large areas, and must obviously be located on the shore of the sea or other bodies of water, to allow the release of the boats built. A dry dock or repair or refit is a structure found in many harbors or arsenals to allow for repairs or maintenance of ships in dry, particularly the hulls and other parts of the hull that are under the level of buoyancy.