Sazanami (train)

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E257-500 Sazanami Kaihin-Makuhari 20061021.JPG
A E257-500 series EMU on a Sazanami service in October 2006
Service type Limited express
Status Operational
Locale Chiba Prefecture
First service 15 July 1972
Current operator(s) JR East
Former operator(s) JNR
Start Tokyo
End Tateyama
Distance travelled 128.9 km (80.1 mi)
Service frequency 4 return services daily
Line(s) used Keiyo Line, Uchibo Line, Sobu Line
On-board services
Catering facilities Trolley service
Rolling stock E257-500 series EMUs
Track gauge 1,067 mm (3 ft 6 in)
Electrification 1,500 V DC overhead
Operating speed 120 km/h (75 mph)

The Sazanami (さざなみ) is a limited express train service in Japan operated by East Japan Railway Company (JR East). It runs between Tokyo and Tateyama via the Keiyo Line and Uchibō Line.[1]

Seasonal Shinjuku Sazanami services operate at certain weekends between Shinjuku and Tateyama.

Principal stations served Tokyo - Soga - Goi - Kisarazu - Kimitsu - Tateyama

Rolling stock[edit]

Former rolling stock[edit]


  • 15 July 1972 - Sazanami service starts coinciding with opening of the underground Sōbu Line platforms at Tokyo Station.
  • 16 March 1991 - Sazanami service are rerouted via the Keiyo Line from Tokyo.
  • 2 July 1993 - 255 series EMUs are introduced on View Sazanami services from Tokyo to Chikura.
  • 16 October 2004 - E257-500 series EMUs are introduced.
  • 10 December 2005 - The View Sazanami name is discontinued, and all services are made entirely no-smoking.[3]

The opening of the Tokyo Bay Aqua-Line road across the Tokyo Bay in 1997 saw increased competition from long-distance bus services offering cheaper fares, resulting in decreasing ridership figures on the Sazanami services.[4] From the start of the 15 March 2014 timetable revision, the number of services was reduced to six return workings daily.[4]

See also[edit]


  1. ^ JR新幹線&特急列車ファイル [JR Shinkansen & Limited Express Train File]. Japan: Kotsu Shimbun. 2008. p. 66. ISBN 978-4-330-00608-6. 
  2. ^ a b 日本と世界の鉄道カタログ'97~'98 [Japan and World Railway Catalogue 1997-1998] (in Japanese). Japan: Seibido Publishing. 17 August 1997. pp. 147, 157. ISBN 4-415-09254-3. 
  3. ^ 2005年12月ダイヤ改正について [Details of December 2005 Timetable Revision] (PDF) (Press release) (in Japanese). East Japan Railway Company. 30 September 2005. Retrieved 25 June 2012. 
  4. ^ a b 房総特急 引き潮 高速道充実で利用者減少 [Boso limited expresses ebbing: Passenger numbers falling due to improved expressway network]. Tokyo Shimbun Web (in Japanese). Japan: The Chunichi Shimbun. 25 March 2015. Archived from the original on 2014-03-26. Retrieved 26 March 2014. 

External links[edit]