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
Locale Chiba Prefecture
First service 15 July 1972
Current operator(s) JR East
Former operator(s) JNR
Start Tokyo
End Tateyama
Service frequency 4 return services daily
Line used Keiyo Line, Uchibo 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[edit]

(Shinjuku) - Tokyo - Soga - Goi - Kisarazu - Kimitsu - Chikura - Tateyama

Rolling stock[edit]

Former rolling stock[edit]

  • 255 series 9-car EMUs
  • 183/189 series EMUs (Shinjuku Sazanami)


  • 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 Keiyō 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.[2]

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.[3] From the start of the 15 March 2014 timetable revision, the number of services was reduced to six return workings daily.[3]

See also[edit]


  1. ^ JR新幹線&特急列車ファイル [JR Shinkansen & Limited Express Train File]. Japan: Kōtsū Shimbun. 2008. p. 66. ISBN 978-4-330-00608-6. 
  2. ^ 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. 
  3. ^ 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. Retrieved 26 March 2014. 

External links[edit]