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| Nagato (ship) | |
|---|---|
| Ship name | Nagato |
| Ship caption | Nagato underway in the 1930s |
| Ship country | Empire of Japan |
| Ship namesake | Nagato Province |
| Ship ordered | 1917 |
| Ship builder | Kawasaki Shipyard |
| Ship laid down | 1 July 1919 |
| Ship launched | 4 April 1920 |
| Ship completed | 31 October 1920 |
| Ship fate | Surrendered 1945; scuttled 1946 |
| Ship displacement | 33,000 tons (full load) |
| Ship length | 201 m |
| Ship beam | 28.5 m |
| Ship draft | 9 m |
| Ship propulsion | 12 Kampon boilers, 2 geared steam turbines |
| Ship speed | 26.5 kn |
| Ship range | 8,000 nmi at 16 kn |
| Ship complement | 1,333 officers and enlisted |
Nagato (ship) Nagato was a dreadnought battleship of the Imperial Japanese Navy built for service in the Kantō region era and named after Nagato. As flagship of Admiral Isoroku Yamamoto's contemporaries and the first capital ship to mount 16-inch (410 mm) guns, Nagato played central roles in Interwar period rearmament, the East Asian strategic rivalry, and major operations during Pacific War. Her design influenced later Japanese battleship development and postwar naval assessment by the United States Navy.
Nagato was designed under the 8-8 Fleet program influenced by experiences from the Battle of Jutland and lessons studied by Japanese naval staff at the Royal Navy's dockyards. The hull lines were drawn at Kawasaki Shipbuilding Corporation and finalized by the Imperial Japanese Navy General Staff with consultation from naval architects associated with the Tokyo Imperial University engineering faculty. Armament plans were approved by the Ministry of the Navy and reflected intelligence on United States Navy dreadnought developments such as USS New York. Keel laying occurred at Kawasaki Shipyard and her launch was attended by officials from the Diet of Japan, naval ministers from the Hara Takashi cabinet, and industrial leaders from Mitsubishi Heavy Industries.
Nagato entered service under the command of officers promoted through the Imperial Japanese Naval Academy and served as flagship for commanders of the Combined Fleet during peacetime cruises that visited Sasebo Naval Arsenal, Kure Naval Base, and foreign ports including Singapore, Hong Kong, and San Francisco. She participated in fleet maneuvers with battleships from Yamashiro-class formations and escorted diplomatic missions tied to the Washington Naval Conference delegations. During the 1930s Nagato was a visible symbol in reviews attended by members of the Imperial Household Agency and representatives of the Rikken Seiyūkai party.
At the outbreak of the Pacific War Nagato was flagship during patrols supporting the invasion of Malaya and operations around Philippine Islands logistics lines. She later provided naval gunfire support in combined operations with carriers from Kido Butai and screened by cruisers such as Atago and Takao. Nagato participated in the Battle of Midway era dispositions and subsequent northern operations aimed at the Aleutian Islands campaign. In late 1944 and 1945 she was stationed at Kure Naval Base for defense against United States Pacific Fleet raids and the Bombing of Kure; she survived air attacks but was damaged by carrier-borne aircraft and near misses associated with operations from Task Force 58 under Admiral Marc Mitscher.
Following Japan's surrender Nagato was seized by occupation authorities and inspected by officers from the Allied occupation of Japan and the Supreme Commander for the Allied Powers. She was present at the Tokyo Bay surrender ceremonies and later used for Operation Crossroads-type analysis by United States Navy technical teams. In 1946 Nagato was designated for scuttling as part of weapons testing and was sunk off the coast of Hawaii during operation-like trials attended by observers from the United Kingdom and Australia. Her remains influenced postwar naval engineering studies at institutions such as Massachusetts Institute of Technology and the Naval Historical Center, and she appears in contemporary naval historiography alongside ships like Yamato and Musashi.
Nagato was armed with eight 410 mm (16.1 in) guns mounted in four twin turrets similar in concept to designs analyzed by the Royal Navy and United States Navy staff. Secondary battery consisted of 127 mm guns patterned after systems used on Furutaka-class cruiser escorts, and her anti-aircraft suite evolved to include 25 mm mounts developed by engineers associated with Nihon Seiko. Armor layout incorporated a thick waterline belt based on studies by the Naval Technical Research Institute and reflected doctrines debated at Washington Naval Conference meetings; magazines and machinery spaces were heavily protected following recommendations from the Imperial Japanese Navy General Staff.
Between the London Naval Treaty and the Tripartite Pact Nagato received major reconstructions at Kure Naval Arsenal and Sasebo Naval Arsenal, including new superstructure designs influenced by Admiral Isoroku Yamamoto's staff requirements. Upgrades included improved fire-control systems co-developed with technicians from the Tokyo Imperial University and new propulsion tuning overseen by engineers from Nippon Heavy Machinery. Her anti-aircraft complement grew in response to combat lessons from the Battle of Guadalcanal and Solomon Islands campaign, incorporating radar equipment procured following contacts with technicians from the Riken research institute.
Nagato's complement drew officers from the Imperial Japanese Naval Academy and enlisted sailors recruited from prefectures including Yamaguchi Prefecture and Hiroshima Prefecture. Daily routines involved gunnery drills guided by instructors from the Naval Gunnery School, navigation training using charts from the Hydrographic Office (Japan), and medical care administered by personnel trained at Tokyo Imperial University Hospital. Morale and culture aboard reflected imperial rituals monitored by officials from the Imperial Household Agency, with shore leave coordinated through port authorities in Kure, Yokosuka Naval District, and foreign harbors such as Shanghai and Batavia.
Category:Battleships of the Imperial Japanese Navy Category:Ships built by Kawasaki Heavy Industries