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Shiosai

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Shiosai

Shiosai
255 series Shiosai at Chōshi, August 2010
Overview
Service type Limited express
Locale Sōbu Main Line
First service 10 March 1975
Current operator(s) JR East
Former operator(s) JNR
Route
Start Tokyo
End Chōshi
Distance travelled 120.5 km (74.9 mi)
On-board services
Catering facilities Trolley service
Technical
Rolling stock 255 series, E257-500 series EMUs
Track gauge 1,067 mm (3 ft 6 in)
Electrification 1,500 V DC overhead
Operating speed 130 km/h (80 mph)

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 Boso Peninsula in Chiba Prefecture.

Station stops

Shiosai services operate over the Sōbu Main Line, stopping at the stations listed below. Some services operate as "Local" all-stations services between Narutō and Chōshi.[1]

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

One evening up Shiosai service (Shiosai 16) is extended to Shinjuku, calling at Akihabara after Kinshichō.[1] This train then returns as the down Home Liner Chiba 3 commuter service.[2]

Rolling stock

E257-500 series 5-car set on a Shiosai service, January 2012

Shiosai services are operated using Makuhari-based 9-car 255 series EMU and 5- or 10-car E257-500 series EMU formations. The E257-500 series formations have no Green (first class) cars.[2]

Past rolling stock

Formations

Trains are formed as shown below, with car 1 at the Tokyo end.[2][3]

9-car 255 series

Car No. 1 2 3 4 5 6 7 8 9
Numbering KuHa 254 MoHa 254 MoHa 255 SaRo 255 SaHa 254 SaHa 255 MoHa 254 MoHa 255 KuHa 255
Accommodation Non-reserved Non-reserved Non-reserved Green Reserved Non-reserved Non-reserved Non-reserved Non-reserved

5-car E257 series

Car No. 1 2 3 4 5
Numbering KuHa E256-500 MoHa E257-1500 MoHa E256-500 MoHa E257-500 KuHa E257-500
Accommodation Non-reserved Reserved Non-reserved Non-reserved Non-reserved

5+5-car E257 series

Car No. 1 2 3 4 5 6 7 8 9 10
Numbering KuHa E256-500 MoHa E257-1500 MoHa E256-500 MoHa E257-500 KuHa E257-500 KuHa E256-500 MoHa E257-1500 MoHa E256-500 MoHa E257-500 KuHa E257-500
Accommodation Non-reserved Non-reserved Non-reserved Non-reserved Non-reserved Non-reserved Non-reserved Non-reserved Non-reserved Non-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,[4] but from December 1994, services were formed of 8-car 183 series sets with the Green car removed, as shown below.[5][6]

8-car 183 series

Car No. 1 2 3 4 5 6 7 8
Accommodation Reserved Reserved Non-reserved Non-reserved Non-reserved Non-reserved Non-reserved Non-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.[6]

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,[7] and the remaining Inubō express services were discontinued and absorbed into the Shiosai services, giving seven return workings daily.[6]

From the start of the revised timetable on 10 December 2005, 255 series 9-car EMUs were introduced on Shiosai services.[3] From the same date, services were made entirely no-smoking.[3]

Future developments

From the start of the 14 March 2015 timetable revision, all Shiosai services will start and terminate at Tokyo Station, with no services operating from Shinjuku.[8]

See also

References

  1. ^ a b
  2. ^ a b c
  3. ^ a b c
  4. ^
  5. ^
  6. ^ a b c
  7. ^
  8. ^

External links

  • JR East 255 series Shiosai/Wakashio/Sazanami (Japanese)
  • JR East E257 series Wakashio/Sazanami/Shiosai/Ayame (Japanese)
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