Shiosai

The Shiosai (しおさい) is a limited express train service in Japan operated by East Japan Railway Company (JR East). It runs from Tokyo and Shinjuku to Chōshi on the Bōsō Peninsula in Chiba Prefecture.

For the Japanese novel Shiosai, see The Sound of Waves.

Shiosai
A 255 series EMU on a Shiosai service at Chōshi in August 2010
Overview
Service typeLimited express
LocaleSōbu Main Line
First service10 March 1975
Current operator(s)JR East
Former operator(s)JNR
Route
StartTokyo
EndChōshi
Distance travelled120.5 km (74.9 mi)
On-board services
Catering facilitiesTrolley service
Technical
Rolling stock255 series, E257-500 series EMUs
Track gauge1,067 mm (3 ft 6 in)
Electrification1,500 V DC overhead
Operating speed130 km/h (80 mph)

Station stops

Shiosai services operate over the Sōbu Main Line, stopping at the stations listed below. No services operate as "Local" all-stations services in any section; this characteristic is different from that of Wakashio ltd.exp..[1][2][3]

Tokyo - Kinshichō - Chiba - Sakura - Yachimata - Narutō - Yokoshiba - Yōkaichiba - Asahi - Iioka - Chōshi

  • No.1 & 12 trains also stop at Funabashi station.
  • No.2, 4 & 13 trains also stop at Yotsukaidō station.

Rolling stock
An E257-500 series 5-car set on a Shiosai service in January 2012

Shiosai services are operated using Makuhari-based 9-car 255 series EMU and 10-car E257-500 series EMU formations. The E257-500 series formations have no Green (first class) cars.[4][2]

Past rolling stock

Formations

Trains are formed as shown below, with car 1 at the Tokyo end.[1][5]

9-car 255 series
Car No.123456789
Numbering KuHa 254MoHa 254MoHa 255SaRo 255SaHa 254SaHa 255MoHa 254MoHa 255KuHa 255
Accommodation Non-reservedNon-reservedNon-reservedGreenReservedNon-reservedNon-reservedNon-reservedNon-reserved

As of 2019, cars no. 2 and 3 are reserved on some services.[2]

5+5-car E257 series
Car No.12345678910
Numbering KuHa E256-500MoHa E257-1500MoHa E256-500MoHa E257-500KuHa E257-500KuHa E256-500MoHa E257-1500MoHa E256-500MoHa E257-500KuHa E257-500
Accommodation Non-reservedNon-reservedNon-reservedNon-reservedNon-reservedNon-reservedReservedNon-reservedNon-reservedNon-reserved

Past formations
183 series EMU on a Shiosai service, May 2005

Trains were originally formed of 9-car 183 series EMUs, including one Green car, or 6-car sets with no Green car,[6] but from December 1994, services were formed of 8-car 183 series sets with the Green car removed, as shown below.[7][8]

8-car 183 series
Car No.12345678
Accommodation ReservedReservedNon-reservedNon-reservedNon-reservedNon-reservedNon-reservedNon-reserved

History
165 series EMU on a special Inubō revival working in November 2002

The Shiosai service was introduced from 10 March 1975 following the completion of electrification of the Sōbu Main Line in October 1974, using 9-car 183 series EMUs, replacing five of the seven daily diesel-powered Inubō (犬吠) express services that operated between Shinjuku/Ryōgoku and Chōshi.[8]

From the start of the November 1982 timetable revision, further 183 series EMUs were drafted in, displaced from Toki limited express services following the opening of the Joetsu Shinkansen,[9] and the remaining Inubō express services were discontinued and absorbed into the Shiosai services, giving seven return workings daily.[8]

From the start of the revised timetable on 10 December 2005, 255 series 9-car EMUs were introduced on Shiosai services.[5] From the same date, services were made entirely no-smoking.[5]

From the start of the 14 March 2015 timetable revision, all Shiosai services started and terminated at Tokyo Station, with no services operating from Shinjuku.[10]

See also

References
  1. JR Timetable. Japan: Kotsu Shimbunsha. April 2016. p. 95–95, 984.
  2. 千葉を走る列車＞しおさい：EAST JAPAN RAILWAY COMPANY Chiba branch Japan
  3. 千葉を走る列車＞わかしお：EAST JAPAN RAILWAY COMPANY Chiba branch Japan
  4. JR新幹線＆特急列車ファイル [JR Shinkansen & Limited Express Train File]. Japan: Kotsu Shimbun. 2008. p. 646. ISBN 978-4-330-00608-6.
  5. JR電車編成表 2012冬 [JR EMU Formations - Winter 2012]. Japan: Kotsu Shimbunsha. October 2011. pp. 50–51. ISBN 978-4-330-25611-5.
  6. 国鉄電車編成表１９８５年版 [JNR EMU Formations - 1985]. Japan: Kotsu Shimbunsha. October 2010. p. 30. ISBN 978-4-330-17610-9.
  7. こだわりの新幹線＆特急列車ガイド [In-depth Shinkansen & Limited Express Guide]. Japan: Ikaros Publishing. August 2000. pp. 84–85. ISBN 4-87149-284-2.
  8. Teramoto, Mitsuteru (July 2001). 国鉄・ＪＲ列車名大辞典 [JNR & JR Train Name Encyclopedia]. Tokyo, Japan: Chuoshoin Publishing Co., Ltd. p. 266. ISBN 4-88732-093-0.
  9. JR特急列車年鑑2013 [Limited Express Annual 2013]. Tokyo, Japan: Ikaros Publications Ltd. 20 December 2012. p. 166. ISBN 978-4-86320-654-0.
  10. JR Timetable. Japan: Kotsu Shimbunsha. February 2015. EAN 4910053110259.
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