NIIGATA EAST PORT NIIGATA WEST PORT RINKO WHARF (Our Private Wharf) The port of Niigata is the largest port on the Japan sea, which has container terminal,bulk terminals, and tanker/LNG terminals. Also port of Niigata is the important position of the highway network that links Tokyo, Osaka,Tohoku area. Under those good conditions, as the leader of harbour transportation companies in Niigata, Rinko corporation was established in 1905 and continuously grow and develop in houbour transpotation business.