10 cm/65 Type 98 naval gun

World War II naval gun of the Imperial Japanese Navy Sideview of No4 turret of japanese destroyer Harutsuki at Maizuru in 1945.jpg 300 A Type 98 gun mounted on the Japanese destroyer Harutsuki Japan Naval gunCoast defence gun yes yes Imperial Japanese Navy Republic of China Navy World War II 169 3053 kg lb barrel & breech 6.73 m ft bore (65 cal) 100 x 819mm .R13 kg lb 100 mm in 20-22 RPM 1010 m/s ft/s on 0 Horizontal effective range: 14000 m ydVertical effective ceiling: 11000 m ft Horizontal:19500 m ydVertical: 13000 m ft at 90° -10° to +90°Campbell, p. 196 The 10 cm/65 Type 98 naval gun 六五口径九八式一〇糎高角砲, also known as the long 10cm high-angle gun 長10センチ高角砲, was a light caliber naval gun of the Imperial Japanese Navy used during World War II, employed on the aircraft carrier Japanese aircraft carrier Taihō 2, the light cruiser Japanese cruiser Ōyodo 2, and Akizuki destroyer (1942) 0 destroyers.Osborne, p. 110-111 The gun was considered by the Japanese to be their finest anti-aircraft artillery weapon. It had excellent elevation and reach and could traverse quickly.http://pwencycl.kgbudge.com/J/a/Japanese_3p9_65_AA_gun.htm The Pacific War Online Encyclopedia: Japanese 3.9"/65 AA Gun pwencycl.kgbudge.com 6 August 2023 Its rate of fire was good, though not as good as the U.S. 5”/38 dual-purpose gun. Its directors were also poorer, and the 10 cm/65 lacked the radar proximity fuse developed by the Allies. After the end of World War II, the gun remained in service on the two Japanese destroyers ceded to the Soviet Union and the Republic of China as war reparations. When it was used as a land-based weapon, it had suffered from needing considerable construction work in preparation for emplacement, which limited its usefulness to static defense. Nevertheless, 32 mounts were deployed for defense of the Japanese homeland, and another three on Iwo Jima, along with two more at Balikpapan.Ness, Leland. Rikugun: Volume 2 - Weapons of the Imperial Japanese Army & Navy Ground Forces (p. 176). Helion and Company The Allied forces would first captured a shore-based twin-mounting of this weapon at Iwo Jima.CINCPAC, p. 38 Description The 100 mm (3.9 in) 65 caliber Type 98 gun utilized a horizontal sliding breech, in addition to either monobloc (made from a single forging) or replaceable liner construction of the barrel. The gun featured a spring-powered rammer that was cocked by means of the recoil of the gun being fired; this allowed the rammer to load the gun at any elevation. 116 guns went to ship-based mounts: 12 for Taiho and 8 each on Oyodo and the 12 Akizuki-class destroyers. A shortcoming of the gun was that it had a service life of only 350-400 full charges, due to its high muzzle velocity. Mountings These guns were used in twin gun turrets. The total weight of the mount and guns on Akizuki was 34500 kg lb on. The mount installed on Akizuki could traverse at 12° to 16° per second and could elevate at a rate of 16° per second. It was electro-hydraulically powered and could be moved by hand in the event of an emergency. Ammunition The gun fired a 100 mm in on, 28 kg lb on, fixed, high-explosive round with a brass casing. Only nose-fused high-explosive ammunition was developed for the gun. Notes References Naval Weapons of World War Two Campbell John Naval Institute Press Annapolis, Maryland 1985 0-87021-459-4 Osborne Eric Destroyers: An Illustrated History of Their Impact ABC-Clio, Inc Santa Barbara, CA 2005 1-85109-484-9 CINCPOA CINCPAC Japanese Artillery Weapons, CINCPAC-CINCPOA Bulletin 152-45, July 1945 CINCPAC-CINCPOA 1945 External links 10 cm/65 (3.9") Type 98 Category:World War II naval weapons Category:Naval anti-aircraft guns Category:Naval guns of Japan Category:100 mm artillery Category:Military equipment introduced in the 1930s