The construction of the dock, the largest one in the Orient, was started on April 26, 1966. The dock is equipped with two mammoth "rolling" gates, the first such ever used in the Orient. Hailed as a major engineering feat, the dock construction cost a total of 19,300 million won.

The colossal dock enables as many as 25 large vessels, including 50,000 ton-class ships, to berth simultaneously. It will increase the cargo-handling capacity at the port to 6,270,000 tons a year from the present 1,420,000 tons. The capacity is to increase up to 12,000,000 tons a year by 1981 when the port can simultaneously accomodate 33 jumbo ships. The new dock will thus save the nation 2,500 million won annually.

Because of the inadequate port facilities before the completion of the new dock, cargoes had to be loaded or unloaded via barges and some of the Inchon-bound shipments had to be unloaded at Pusan from where they were transported by rail, by truck or by air. The dock will accelerate the development of the Seoul-Inchon industrial complex and spur the growth of key industries as well as coastal industries, thereby contributing greatly to the nation`s economic development. By facilitating the flow of goods for Seoul and the central region, the dock will also help reduce the cost of industrial production.