Yamagumo-class

The Yamagumo-class destroyers were developed for the Japan Maritime Self-Defense Force as the successor to the Akizuki class. Planned as a fleet workhorse, the vessels were built in two batches between 1964 and 1977. Production was briefly diverted to the Minegumo-class destroyer to accommodate the DASH system; however, the JMSDF resumed construction of the Yamagumo design after the QH-50D DASH was discontinued. The second group of vessels is also known as the Aokumo class.

Although classified as destroyers by the JMSDF, some sources categorize the vessels as destroyer escorts due to their displacement. Propulsion is provided by Mitsui or Mitsubishi diesel engines. The class was equipped with the OPS-11 early warning radar and the ASROC anti-submarine rocket system. Earlier vessels utilized the AN/SQS-23 sonar and Mark 56 or Mark 63 fire-control systems. The latter Aokumo-class batch featured updated electronics, including the OQS-3 hull-sonar and the AN/SQS-35 variable depth sonar system. Armament consists of guns, Bofors ASW rocket launchers, and HOS-301 torpedo tubes. Electronic warfare is supported by NOLR-1B or NOLR-6 systems.

Six vessels were completed by Sumitomo Heavy Industries, Maizuru Heavy Industries, Mitsui Shipbuilding & Engineering, and Uraga Heavy Industries. The lead ship, Yamagumo, entered service in 1966. Subsequent vessels—Makigumo, Asagumo, Aokumo, Akigumo, and Yūgumo—entered service through 1978. During their operational history, several units were reclassified to training or auxiliary roles. Decommissioning of the class began in 1995, and the final vessels left service in 2005.