The Hyūga-class helicopter destroyer (ひゅうが型護衛艦, Hyūga-gata-goei-kan) is a class of helicopter carrier built for the Japan Maritime Self-Defense Force (JMSDF). Two - Hyūga and Ise - were built; upon completion the class were the largest ships built for the Japanese navy since the Second World War.[1]Hyūga was described in a PBS documentary as the "first Japanese aircraft carrier built since WWII".[2]
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The Hyūgas were followed by the larger Izumo class, the first being commissioned in March 2015. The Izumos replaced the Shirane-class helicopter destroyers;[3] the Hyūgas were originally meant to replace the Shiranes.[1]
During development, Hyūga and Ise were provisionally named "16DDH" and "18DDH" respectively. The numbers derived from the Japanese calendar, specifically the 16th year and 18th year of the Heisei reign (2004 and 2006), when the provisional name were given.[1]
In 2016, MV-22 Ospreys operated off Hyūga in the participation of relief efforts following the Kumamoto earthquake.[12]
Ships in the class
Construction of the first ship, JS Hyūga, was started in 2006 and it was launched on 23 August 2007. The second was launched and named JS Ise on 21 August 2009.[13]
Hyūga was named after Hyūga Province (日向国, Hyūga no kuni) (present-day Miyazaki Prefecture) on the east coast of Kyūshū, and Ise after Ise Province (伊勢国, Ise no kuni) (present-day Mie Prefecture). They inherited the names of the Ise-classbattleshipsHyūga and Ise of the Imperial Japanese Navy. These two ships had been built during World War I and served in World War II. Following the Battle of Midway, Hyūga and Ise were converted into a hybrid battleship/aircraft carriers in 1943 with the replacement of the aft gun turrets and barbettes by a small aircraft handling deck and hangar deck with which they could launch a squadron of Yokosuka D4Y dive-bombers and Aichi E16A seaplanes.[14]
In November 2009, Hyūga participated in "Annualex 21G" joint naval exercise with the US aircraft carrier USSGeorge Washington and other USN and JMSDF ships to maintain the interoperability between the two navies.[citation needed]
On 11 March 2011, the 2011 Tōhoku earthquake and tsunami struck the northeast part of Japan. Hyūga immediately moved to off the coast of Miyagi prefecture and started search and rescue operations.[15]Ise, which went into service on 16 March, also will join aid delivery operation for refuge shelters.
On 8 November 2013, Super-Typhoon Haiyan crossed the Visayas, Philippines. Ise joined the relief operation, using its helicopters to provide relief supplies to remote areas cut off by the storm.