The initial JMSDF OYASHIO system submarine premiered in 1998. 9 submarines completed up being taking solution in JMSDF till 2006. Two more linked to the system are building or on purchase, as a result of the tenth in the offing to payment in 2007. The 268-foot submarines carry 20 torpedoes or UGM-84C Harpoon missiles, unlike the 3 previous Japanese submarine classes, have actually really in fact bow-mounted torpedo pipelines and conformal sonar arrays.