Ayanami-class destroyer
 The Ayanami class was a destroyer class built for the Japan Maritime Self-Defense Force (JMSDF) in the late 1950s.The primary purpose was anti-submarine warfare so this class was classified as DDK (hunter-killer anti-submarine destroyer) unofficially.This class adopted a long forecastle design with inclined afterdeck called Holland Slope named after the scenic sloping street in Nagasaki City.