The entire line opened on 12 June 1910,[2] and until the opening of the Seto Ohashi Bridge in 1988, was the main railway connection to Shikoku (via the Takamatsu ferry). With the privatization of JNR on 1 April 1987, the line came under the control of JR West.[2]
From the start of the 26 March 2016 timetable revision, the line was branded the Uno Port Line (宇野みなと線, Uno-minato-sen).[3]
^"新型車両 227 系「Urara」運行区間を拡大します" [Service area expansion of the new 227 series "Urara"] (PDF). JR West (in Japanese). Japan. 27 November 2023. Retrieved 22 January 2024.
^ abIshino, Tetsu, ed. (1998). 停車場変遷大辞典 国鉄・JR編 [Station Transition Directory - JNR/JR] (in Japanese). Vol. I. Japan: JTB. p. 96. ISBN4-533-02980-9.
^岡山・福山エリアの主な路線に「路線記号」「ラインカラー」を導入します [Line codes and line colours to be introduced on main lines in Okayama and Fukuyama areas]. News release (in Japanese). Japan: West Japan Railway Company. 17 September 2016. Retrieved 29 March 2016.