Thursday 26 April 2012

Hyūga class helicopter destroyer

The Hyūga-class helicopter destroyer (ひゅうが型護衛艦 Hyūga-gata-goei-kan ?) are a type of helicopter carrier being built for the Japan Maritime Self-Defense Force (JMSDF).[1][2] Two ships of the class were built to replace the two 7,000-ton Haruna-class helicopter destroyers. The new ships are the largest combatant ship operated by Japan since the Imperial Japanese Navy was superseded by the JMSDF.[1] The first ship in the class, Hyūga, was commissioned on March 18, 2009 and stationed in Yokosuka, near Tokyo.[3] The second ship Ise went into service on March 16, 2011 and will be stationed in Kure.
The Hyūga-class' specifications are comparable to light aircraft carriers, such as Italian Giuseppe Garibaldi, Spanish Principe de Asturias and Royal Navy's Invincible-class carriers.[4] Under the JMSDF's naming conventions, the ships are called Goei-kan (護衛艦, lit. escort ship) in Japanese and destroyer in English, as same as all the other combatant ships of JMSDF.
According to a PBS documentary, JS Hyūga is the "first Japanese aircraft carrier built since WWII."[5]
The Hyuga 's code-name (16DDH) and Ise 's code-name (18DDH) derive from the Japanese calendar, specifically the 16th year and 18th year of the Heisei reign (2004 and 2006), when the provisional title was given.[1]
Construction of the first ship Hyūga was started in 2006 and it was launched on 23 August 2007. The second was launched and named Ise on 21 August 2009.[13]
Pennant no.NameLaid downLaunchedCommissionedHomeport
DDH-181Hyūga (16DDH)11 May 200623 August 200718 March 2009Yokosuka
DDH-182Ise (18DDH)30 May 200821 August 200916 March 2011Kure

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-class battleship Hyūga and Ise of the Imperial Japanese Navy. These two ships had been built during the World War I and served in World War II. Following the Battle of Midway, the Hyuga 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 flight deck and hangar deck with which they could launch a squadron of Yokosuka D4Y dive-bombers and Aichi E16A seaplanes.[4]
In November 2009, Hyūga participated in Annualex 21G joint naval exercise with USS George 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 operation.[14] Ise, which went into service on 16 March, also will join aid delivery operation for refuge shelters.

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