Nanao Line

The line began as a private venture. A company first chartered as the Kanō Railway in the mid-1890s was renamed the Nanao Railway in 1896, and on 24 April 1898 it opened its first section between a provisional station at Tsubata and Yatashin, a distance recorded in the imperial units of the day as 32 miles 42 chains, or about 52.3 km, running through the town of Nanao; the short Nanao–Yatashin stretch at the seaward end carried freight only. Two years later, on 2 August 1900, the company extended its line the short distance to a new connection with the government's Hokuriku Main Line at Tsubata, finally tying the Noto railway into the national network.

Under the Railway Nationalization Act the Nanao Railway was bought out by the state on 1 September 1907, and when the government railways drew up their formal list of line names on 12 October 1909 the Tsubata–Yatashin route was christened the Nanao Line. The state then pushed the railway up the peninsula in stages. The Nanao–Wakura section (Wakura is today's Wakura-Onsen) opened on 15 December 1925, at which point Nanao Station was moved to its present site; the line was extended from Wakura to Noto-Nakajima on 31 October 1928 and on to Anamizu on 27 August 1932. The final section, from Anamizu to Wajima at the tip of the peninsula, opened on 30 July 1935, completing the route as it would stand for the rest of the twentieth century.

Through the long Japanese National Railways era the Nanao Line was a rural, steam-then-diesel branch. Diesel railcars entered service in 1958, regular passenger trains were fully freed of steam by 1971, and centralised traffic control was introduced across the line in 1972. Wakura Station was renamed Wakura-Onsen on 1 July 1980 to advertise the adjoining hot springs. As freight ebbed away, goods working between Tsubata, Nanao and Anamizu was abolished on 1 February 1984, the short freight branch from Nanao to Nanao-port was closed, and Nanao-port Station shut. When JNR was broken up and privatised on 1 April 1987, the Nanao Line passed to the newly created JR West.

The line's character changed sharply on 1 September 1991. The southern part, from Tsubata to Wakura-Onsen, was electrified at 1,500 V DC, allowing limited-express trains to run through onto it from the Hokuriku Main Line — the 'Super Raichō' and 'Shirasagi' began doing so that day — and the old KiHa 58 diesel cars on the Kanazawa–Nanao locals were replaced by 415-series electric trains. At the same moment the northern part, from Wakura-Onsen up to Wajima, was handed over to the third-sector Noto Railway: JR West kept ownership of the track as a Category-3 operator while Noto Railway took over running the trains as a Category-2 operator between Nanao and Wajima. This is why the JR West Nanao Line today is reckoned only from Tsubata to Wakura-Onsen, even though the rails go further.

The far northern end did not survive. The Anamizu–Wajima section was abolished on 1 April 2001, ending both Noto Railway's operation and JR West's ownership of that stretch. On the electrified JR section a succession of named limited expresses came and went as the wider Hokuriku network was rebuilt: when the 'Shirasagi' and 'Hakutaka' stopped running through to the line, the dedicated limited express 'Noto Kagaribi' was introduced on 14 March 2015, and a sightseeing limited express, the 'Hanayome Noren', began on 3 October 2015. The line was modernised in the following years, with 521-series trains introduced from 3 October 2020 and the ICOCA smart-card system and driver-only operation both starting on 13 March 2021.

The Nanao Line was badly disrupted by the Noto Peninsula earthquake of 1 January 2024, which suspended the entire route; services were restored section by section over the following weeks, from Tsubata to Takamatsu on 3 January and finally between Nanao and Wakura-Onsen on 15 February. Soon afterward, the timetable revision of 16 March 2024 that accompanied the transfer of the parallel Hokuriku Main Line ended through running of the 'Thunderbird' limited express onto the Nanao Line. Today the line carries local electric trains between Kanazawa and the Noto towns together with the 'Noto Kagaribi' and the tourist 'Hanayome Noren', and remains the principal rail artery into the Noto Peninsula, feeding Noto Railway's continuation to Anamizu.

• 189824 April: the Nanao Railway opens its first section, from a provisional station at Tsubata to Yatashin (about 52.3 km), running through Nanao; the seaward Nanao–Yatashin stretch is freight-only.
• 19002 August: the line is extended to a connection with the government's Hokuriku Main Line at Tsubata, linking the Noto railway into the national network.
• 19071 September: the Nanao Railway is bought out and nationalised under the Railway Nationalization Act.
• 190912 October: under the government railways' line-naming list, the Tsubata–Yatashin route is named the Nanao Line.
• 192515 December: the Nanao–Wakura (now Wakura-Onsen) section opens; Nanao Station is moved to its present site.
• 192831 October: the line is extended from Wakura to Noto-Nakajima.
• 193227 August: the line is extended from Noto-Nakajima to Anamizu (16.9 km).
• 193530 July: the Anamizu–Wajima section (20.4 km) opens, completing the through line to the tip of the Noto Peninsula.
• 19801 July: Wakura Station is renamed Wakura-Onsen.
• 19841 February: freight working over Tsubata–Nanao–Anamizu is abolished; the Nanao–Nanao-port freight branch (2.1 km) closes and Nanao-port Station shuts.
• 19871 April: with the break-up and privatisation of Japanese National Railways, the Nanao Line passes to JR West.
• 19911 September: Tsubata–Wakura-Onsen is electrified at 1,500 V DC and limited expresses ('Super Raichō', 'Shirasagi') begin through running; the Wakura-Onsen–Wajima section is transferred to the third-sector Noto Railway (Noto Railway as Category-2 operator on Nanao–Wajima, JR West retaining the track as a Category-3 operator); 415-series EMUs replace the KiHa 58 diesel cars on Kanazawa–Nanao locals.
• 20011 April: the Anamizu–Wajima section is abolished, ending both Noto Railway's operation and JR West's ownership of that stretch.
• 201514 March: with the 'Shirasagi' and 'Hakutaka' no longer running through, the dedicated limited express 'Noto Kagaribi' is introduced; on 3 October the sightseeing limited express 'Hanayome Noren' begins.
• 202113 March: the ICOCA smart-card system becomes usable line-wide and driver-only (one-man) operation begins (following the introduction of 521-series trains from 3 October 2020).
• 20241 January: the Noto Peninsula earthquake suspends the whole line; it reopens in stages (Tsubata–Takamatsu on 3 January, Nanao–Wakura-Onsen on 15 February). The 16 March timetable revision, accompanying the Hokuriku Main Line transfer, ends 'Thunderbird' limited-express through running onto the line.