The E001 series (E001系), branded Train Suite Shiki-shima (TRAIN SUITE 四季島 Toran Suiito Shikishima) is a hybrid electric/diesel deluxe sleeping-car excursion train operated by the East Japan Railway Company (JR East) since 1 May 2017.
The ten-coach train consists of six sleeping cars, a lounge car, a dining car, and observation cars at either end of the train. Five of the sleeping cars each have three private suite rooms, while one car (car 7) has two deluxe suites - a split-level "maisonette" type and a single-level "flat" type. The train formation is as shown below, formed of six motored ("M") cars and four non-powered trailer ("T") cars, and car 1 at the southern end. All suites have a shower and toilet. The two deluxe suites also each have a bathtub. One suite in car 4 is universal access. The entire train accommodates only 34 passengers.