The Harushio class is a diesel-electric submarine class operated by the Japanese Maritime Self-Defense Force (JMSDF). The design is an evolution from the being slightly larger and with better noise reduction. Asashio, has been modified to test air-independent propulsion (AIP), and the remaining vessels were decommissioned and replaced by the Oyashio-class. Natsushio, Hayashio, Arashio and Asashio are all named after World War II destroyers. Vessels See also Hai Lung-class submarine Walrus-class submarine Dolphin-class submarine Type 039 submarine Upholder/Victoria-class submarine Collins-class submarine Lada-class submarine S-80-class submarine References Jane's Fighting Ships 2005–2006 Submarine classes Harushio class Auxiliary training ship classes