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| Taihō (aircraft carrier) | |
|---|---|
| Ship name | Taihō |
| Ship country | Imperial Japanese Navy |
| Ship namesake | Taihō Reforms |
| Ship ordered | 1941 |
| Ship builder | Kawasaki Heavy Industries |
| Ship laid down | 4 November 1941 |
| Ship launched | 7 April 1943 |
| Ship commissioned | 7 March 1944 |
| Ship fate | Sunk 19 June 1944 |
| Ship displacement | 32,000 long tons (standard) |
| Ship length | 257.5 m |
| Ship beam | 29 m |
| Ship propulsion | Steam turbines |
| Ship speed | 31.5 kn |
| Ship complement | ~2,150 |
Taihō (aircraft carrier) was the largest aircraft carrier completed by the Imperial Japanese Navy during World War II. Commissioned in March 1944, she represented a significant evolution from earlier Kaga and Sōryū designs, incorporating an enclosed flight deck and armored hangar intended to improve survivability against air attack and underwater attack. Taihō's brief active service culminated at the Battle of the Philippine Sea, where damage and subsequent loss revealed critical vulnerabilities in damage control and fuel handling practices within the Imperial Japanese Navy.
Taihō was ordered under the Circle Three Supplementary Naval Expansion Program and designed by the Kansei Sekkei to address lessons from the Battle of Midway. Construction began at the Kobe Shipyards of Kawasaki Heavy Industries on 4 November 1941, with the hull form influenced by the Shōkaku and Hiryū developments. Taihō incorporated an armored flight deck similar in intent to Royal Navy concepts employed on Illustrious but executed as a full-length enclosed hangar with armor belt protection derived from analyses by the Kure Naval Arsenal and the Naval Shipbuilding Bureau. Designers prioritized anti-torpedo bulges and a deep armored hangar to resist bomb penetration, while steam turbine machinery and heavy anti-aircraft suites were arranged by coordination between Mitsubishi Heavy Industries and Nakajima Aircraft Company consultants.
Taihō displaced approximately 32,000 long tons standard and up to 39,000 long tons at full load, with an overall length of 257.5 m and a beam of 29 m. Propulsion consisted of Kampon steam turbines fed by oil-fired boilers, giving a top speed around 31.5 knots and a range comparable to other fleet carriers of the Combined Fleet. Armor included an armored flight deck and a 100 mm armored hangar roof over the machinery and magazines, an armored belt around the waterline, and internal subdivision influenced by Japanese naval architecture practices. Primary armament comprised multi-purpose dual-purpose guns and an extensive array of anti-aircraft weapons: 12.7 cm Type 89 dual-purpose guns in twin mounts and numerous 25 mm Type 96 light anti-aircraft guns in triple and single mounts, procured from Hitachi and assembled under Nippon Kayaku contracts. Torpedo protection borrowed elements from contemporary US Navy analyses but lacked the layered liquid and void system perfected later by United States Navy carriers.
Designed air wing composition reflected the Imperial Japanese Navy Air Service organization and available production from firms such as Aichi Kokuki and Mitsubishi Aircraft Company. Taihō embarked a planned complement of around 63 aircraft including A6M Zero, D3A Val dive bombers, and B6N torpedo bombers, alongside C6N reconnaissance aircraft and specialized Kawanishi N1K fighters when available. Flight deck operations were managed using upgraded arresting gear and hydraulic lifts developed at Kawasaki Heavy Industries facilities; however, wartime shortages and training limitations in the Sixth Fleet and First Air Fleet affected sortie rates. Taihō's armored hangar limited deck handling flexibility compared with open-deck Essex-class practices, influencing flight scheduling during large-scale operations such as the Philippine Sea operation.
After commissioning on 7 March 1944, Taihō joined the Combined Fleet as part of Admiral Jisaburō Ozawa's mobile forces. She participated in training and transit operations between the Home Islands and forward bases at Truk Lagoon and Palau Islands, integrating into task groups with carriers such as Shōkaku, Zuikaku, and Hiyō. As the Battle of the Philippine Sea loomed in June 1944, Taihō formed part of the First Mobile Fleet deployed to counter advancing United States Pacific Fleet forces under Admiral Raymond A. Spruance and Admiral William F. Halsey Jr.. Operational planning involved coordination with surface units including Yamato, Musashi, and escorting cruisers and destroyers drawn from the Kido Butai and Mobile Fleet surface elements.
On 19 June 1944 during the Battle of the Philippine Sea, Taihō was struck by a dive bomber-delivered aerial bomb or by a torpedo from Avenger aircraft—accounts vary—resulting in a fuel tank breach and an internal fuel vapor explosion. The immediate blast caused severe structural and systems damage despite the armored hangar, and rapid progressive fires and gasoline vapor detonations overwhelmed crews. Failures in damage control procedures, including inadequate compartmentalization and poor ventilation of aviation gasoline, exacerbated the situation; deficiencies traced to interrupted firefighting training and flawed fuel handling doctrine promulgated by the Imperial Japanese Navy General Staff. Attempts at counter-flooding and salvage were hampered by continuing air attack from USS Enterprise- and USS Lexington-launched aircraft, and by nightfall Taihō succumbed to progressive flooding and detonations, capsizing and sinking with substantial loss of life. Postwar analyses by United States Navy and surviving Imperial Japanese Navy officers highlighted the interaction of armor protection, fuel stowage, and damage control as decisive factors in her loss.
Taihō's loss influenced late-war and postwar carrier design studies performed by institutions such as the United States Naval War College, the NIDS, and naval architects at Newport News Shipbuilding. Lessons from Taihō contributed to revised doctrines on fuel storage, armored hangar utility, and damage control training in both United States Navy and postwar Japan Maritime Self-Defense Force debates. Artefacts recovered or documented include ship plans, some preserved at the Yokosuka Naval Arsenal archives and in collections at the Kobe Maritime Museum, while surviving components and personal effects reside in museums like the Yasukuni Shrine archives and private collections tied to Kawasaki Heavy Industries. Taihō remains a subject in naval history works on the Pacific War, carrier warfare analyses, and memorial literature honoring crews lost at the Battle of the Philippine Sea.
Category:Aircraft carriers of Japan Category:Ships sunk by aircraft Category:World War II shipwrecks in the Philippine Sea