The , or for short, is a Japanese railway line in Shizuoka Prefecture, paralleling the north coast of Lake Hamana between Kakegawa Station in Kakegawa and Shinjohara Station in Kosai. This is the only railway line of .
The Japanese National Railways was built as an alternative route for the Tokaido Main Line and in particular as a backup for the bridge over Lake Hamana, which was considered potentially vulnerable to weather disruption. The Japanese military also supported the project as the new line would be less vulnerable to coastal attack than the existing section of the Tokaido Main Line. Operations began on April 17, 1935, between and . Construction work progressed in the opposite direction with the connecting with on December 1, 1936. This line was extended to by April 1, 1938, and the two lines were connected on June 1, 1940.
The line was used as a detour for the Tokaido Main Line following damage to it caused by the TÃ Ânankai earthquake in December 1944 and military actions in July 1945.
Steam locomotives ceased service on the line in 1971, and all scheduled freight services were discontinued from 1984.
Operations of the former Futamata Line were taken over by the third-sector company Tenryà « Hamanako Railroad in 1987, the same year Japanese National Railways was privatized.
Thirty-six features of the line (including bridges and station buildings) are registered tangible cultural properties of Japan.
This article incorporates material from the corresponding article in the Japanese Wikipedia.