Ōshima Station
Lines. Ōshima Station is a station of the Etsumi-Nan Line, and is 64.3 kilometers from the terminus of the line at . Station layout. Ōshima Station has a one ground-level side platform serving a single bi-directional track. The station is unattended. History. Ōshima Station was opened on March 1, 1955. Operations were transferred from the Japan National Railway (JNR) to the Nagaragawa Railway on December 11, 1986. The station was renamed to its present name on October 1, 1996.