General Description
Location: Onsan lies at the mouth of Sangnam Cheon (Oehwang Gang), which flows from the W and empties into Ulsan Man. The port is entered 0.6 mile NNE of Choam Do. between the head of a breakwater which extends 0.5 mile NNE of Choam Do.
General overview: Onsan is a large-sized port. Onsan Port contains 13 piers and two buoys that can berth 23 vessels and handle almost 4.7 million tons of cargo per year. The port consists of six jetties, with berthing depths of 11.1 to 13.9m alongside their NW and SE sides, are available for unloading tankers, and situated close NE of Chun Do. Dongbuk Wharf, with an alongside depth of 12m, lies close E of Damneungsan summit (35°26.5'N., 129°21.1'E.). Berth No. 1 through Berth No. 6, situated S of Dongbuk Wharf, have alongside depths of 10.6 to 12.0m. Administration Wharf, at the head of the basin, has alongside depths of 5.3 to 8.3m. Jeongil Wharf No. 1 has an alongside depth of 14.6m. Jeongil. Wharf No. 2, which lies NE of Jeongil Wharf No. 1, has depths of 12.0 to 13.6m. Tankers of 30,000 dwt berth at the terminal. A light is shown and a fog signal is sounded from the SBM, and a submarine pipeline leads W to the shore 0.5 mile NW of Yonja Do (35°25'N., 129°22”E.).
Traffic figures: Approx. 4,700,000 tons of cargo are handled annually.
Load line zone: Summer.
Max. size: LOA: 280 m; draught: 16 m.
The largest vessel called at the port: LOA: 257 m, draught: 13.5 m, deadweight: 119,456 t.