721 series
The 721 series is an AC electric multiple unit operated by Hokkaido Railway Company on Sapporo area suburban services in Hokkaido, Japan since 1988.Design
The trains were built jointly by Hitachi, JR Hokkaido, Kawasaki Heavy Industries, and Tokyu Car.Fleet
As of 1 April 2012, the fleet consists of 135 vehicles, formed as 23 3-car sets and 11 6-car sets.Variants
- 721-0 series
- 721-1000 series
- 721-2000 series
- 721-3000 series
- 721-4000 series
- 721-5000 series