Currently, the Japan Maritime Self-Defense Force has many modern surface warships, including the Asagiri-class destroyers
The Asagiri class was built between 1986 and 1989, eight completed, and serves as the JMSDF’s second-generation multirole destroyer class. JS Asagiri and her sisters have a full load displacement of about 5,200 tons, a length of 137m, a beam of 14.6m, and a draft of 4.5m. The hull has become an enlarged type of Hatsuyuki class, and the hull form is shelter deck style. Also, as the latter batch of the Hatsuyuki class, the upper structure is made of steel, but since it was incorporated into the design from the beginning, the adverse effect on the movement performance was solved.
The class has the Combined gas and gas propulsion system with four Kawasaki-Rolls-Royce Spey SM1A gas turbines. With these powerful engines, it was possible to run at 26 knots (48 km/h; 30 mph) by driving only two of the four engines. The ship can have up to 220 personnel on board. The ship is also fitted to accommodate for one aircraft, to service a SH-60J9(K) Seahawk helicopter.
The Asagiri class is equipped for combat and interception missions, and is primarily armed with anti-ship weapons. Armament includes a 76mm OTO-Breda turreted deck gun over the forecastle and 2 x Harpoon anti-ship missile launchers (four cells each). A single Mk.29 Sea Sparrow anti-aircraft missile launcher is fitted to deal with aerial threats and close-in defense is handled by the 20mm Phalanx CIWS pairing. The destroyer is also outfitted with an Mk 16 ASROC (Anti-Submarine ROCket) launcher as well as 2 x 324mm HOS-302A triple torpedo tubes.
Other equipment includes the OYQ-6/7 CDS, the OPS-14/24 air-search radar, the OPS-28 surface-search radar and the OQS-4A hull-mounted sonar. The Electronic Warfare (EW) suite includes the NOLR-8 intercept radar the OLT-3 jammer and the Mark 36 SRBOC countermeasures kit.
JS Asagiri was laid down on February 13, 1985 and launched on September 19, 1986. She was commissioned on March 17, 1988. She served in her given destroyer role up until February of 2005, then she was reclassified to a training ship. On 14 March 2012, she was reclassified to an escort ship again, and the ship registration number was changed to DD-151.