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. Seasonal Shinjuku Sazanami services operate at certain weekends between Shinjuku and Tateyama. As of 12 March 2022, 5 outbound trains and 3 inbound trains are operated each day, except on Saturdays and holidays. These trains stop at the following stations listed below: Tokyo - Soga - Goi - (Anegasaki) - Kisarazu - Kimitsu

Rolling stock

Former rolling stock

Formations

Sazanami trains are formed as shown below, with car 1 at the Tokyo end.

5-car E257 series

9-car 255 series (No. 6 only)

History

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