12 cm 11th Year Type naval gun

World War II Japanese naval gun and coast defense gun 12 cm 11th Year Type naval gun 12_cm_11th_Year_Type_naval_gun.jpg 300 A 11th Year Type in a coastal artillery role. Empire of Japan Naval gunCoastal artilleryDeck gun yes yes 1922–1945 Imperial Japanese Navy World War II 3250 kg lb on 17 ft 3 in m on flip 14 ft 6 in m on flip 7 ft m on flip Separate loading 120 x 550R cased charges and projectiles 44 lb 12 oz kg on 120 mm in on 5-6 rounds per minute 2700 ft/s m/s on 17500 yd m on at 33° Horizontal sliding-block Hydro-pneumatic Pedestal mount Ship: +10° to +55°Submarine: +10° to +33° 360° The 12 cm 11th Year Type naval gun was a Japanese naval gun and coast defense gun used on submarines, minesweepers, and torpedo boats of the Imperial Japanese Navy during World War II. Design thumb|left|12 cm 11th Year Type coastal gun The 12 cm 11th Year Type was a 1922 redesign of the earlier 12 cm/45 3rd Year Type naval gun. The 11th Year Type was a typical built-up gun the period with a central rifled tube surrounded by layers of reinforcing tubes. There may have also been an autofretted mono-block barreled version of the same gun. Estimates on the length of the barrel range between 40 and 45 calibers. The 11th Year Type barrel rested in a ring cradle on a pedestal mount and had a hydro-pneumatic recoil mechanism that consisted of one recoil cylinder below the barrel and two on top.Naval Weapons of World War Two Campbell John 1985 Naval Institute Press 0870214594 Annapolis, Md. 186 13085151 The 11th Year Type differed from the earlier 3rd Year Type because it had a horizontal sliding-block breech and fired separate loading cased charges and projectiles while the earlier gun fired separate loading bagged charges and projectiles. The 11th Year Type was used on smaller naval vessels and submarines possibly because a cased charge was easier to load and wasn't as susceptible to water damage on wet decks. The 11th Year Type had a wider range of elevation and traverse than the 3rd Year Type but with a maximum elevation of +55°, it wasn't really a dual-purpose gun. left Ammunition +TypeWeightCommon Type 045 lb kg onCommon Type 145 lb kg onAnti-Submarine 1a36 lb 5 oz kg onIllumination 2a45 lb kg on Naval use 18em Ōtori-class torpedo boats Tomozuru-class torpedo boats I153-class submarines I156-class submarines I171-class submarines I174-class submarines I176-class submarines I61-class submarines W1-class minesweepers Weapons of comparable role, performance and era BL 4.7 inch /45 naval gun: British equivalent 5"/51 caliber gun: US Navy equivalent References & External links Bibliography Naval Weapons of World War Two Campbell John Naval Institute Press Annapolis, Maryland 1985 0-87021-459-4 Category:Naval guns of Japan Category:120 mm artillery Category:Military equipment introduced in the 1920s