14 cm/50 3rd Year Type gun

• Name — 14 cm/50 3rd Year Type naval gun • Origin — Japan • Type — Naval gun Coast-defense gun • Is Ranged — YES • Is Artillery — YES • Service — 1914–1945 • Used By — Imperial Japanese Navy • Wars — * World War I • World War II • Weight — 5600 - • Part Length — 7.0 m (bore length) • Cartridge — separate-loading, bagged charge • Cartridge Weight — 38 kg • Caliber — 14 cm • Rate — About 6 rounds per minute • Velocity — 850 - • Max Range — 19750 m at +35° • Breech — Welin breech block • Elevation — -7° to +35° depending on mount

It served as the secondary armament in a number of Japanese dreadnoughts and as the main armament in light cruisers and some auxiliary ships. It was also the most common Japanese coast-defense gun during World War II. "Third year type" refers to the Welin breech block on this gun. Breech-block design began in 1914, the third year of the Taishō period. This breech-block design was also used on Japanese 41 cm, 20.3 cm, 15.5 cm, 12.7 cm, and 12 cm naval guns. This gun was not mounted aboard submarines. Submarine cruisers used the shorter-barreled 14 cm/40 11th Year Type naval gun.

• single casemate mounts • 20x1 battleship (removed during conversion to hybrid carrier) • 20x1 • single pedestal mounts • 7x1 • 7x1 • 7x1 • 4x1 • 2x1 light cruiser (also had twin mounts) • 4x1 aircraft carrier Japanese aircraft carrier • twin mounts • 3x2 seaplane carrier • 2x2 • 2x2 • 2x2 minelayer • 2x2 light cruiser (also had single mounts) • (uncertain mount) • * • * • *

• BL 5.5 inch Mark I naval gun: British equivalent • Canon de 138 mm Modèle 1910 Naval gun: French equivalent

• Illustration — A 3rd Year Type gun used for coastal defense. • Illustration — A captured gun after the Battle of Enogai. • Illustration — A turret mounted gun captured on Tarawa. • Illustration — One of the three surviving Piti Guns on Guam.