| 14 cm/40 11th Year Type naval gun | |
|---|---|
 14 cm/40 11th Year Type naval gun aboard Japanese submarine I-400 being inspected by United States Navy personnel. | |
| Type | Naval gun |
| Place of origin | Empire of Japan |
| Service history | |
| In service | 1922–1945 |
| Used by | Imperial Japanese Navy |
| Wars | World War II |
| Specifications | |
| Mass | Single Mount: 8,600 kilograms (18,960 lb) Twin Mount: 18,300 kilograms (40,345 lb)[1] |
| Length | 5.9 meters (19 ft 4 in) |
| Barrel length | 5.6 meters (18 ft 4 in) (bore length) |
| Shell | separate-loading, cased charge |
| Shell weight | 38 kilograms (84 lb) |
| Caliber | 14-centimeter (5.5 in) |
| Breech | Horizontal sliding breech block |
| Elevation | Single Mount: +30° to −5° Twin Mount: +40° to −7° [1] |
| Rate of fire | 5 rounds per minute |
| Muzzle velocity | 700 meters per second (2,300 ft/s) |
| Maximum firing range | 16,000 meters (17,000 yd) at +30°[1] |
The 14 cm/40 11th Year Type naval gun was the standard surface battery for Japanese submarine cruisers of World War II. Most carried single guns, but Junsen type submarines carried two. Japanese submarines I-7 and I-8 carried an unusual twin mounting capable of elevating to 40°. The appended designation 11th year type refers to the horizontal sliding breech block on these guns. Breech block design began in 1922, or the eleventh year of the Taishō period in the Japanese calendar.[2] The gun fired a projectile 14 centimeters (5.5 in) in diameter, and the barrel was 40 calibers long (barrel length is 14 cm x 40 = 560 centimeters or 220 inches).[3]
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Transcription
World War II
This gun was the weapon used by I-17 to sink SS Emidio and to later shell the Ellwood Oil Field near Santa Barbara, California. It was also used by I-25 for the Bombardment of Fort Stevens in Oregon near the mouth of the Columbia River and by I-26 to shell the Estevan Point lighthouse in British Columbia.[4]
Similar weapon
A longer-barreled 14 cm/50 3rd Year Type naval gun was used aboard surface ships and for coastal defense. The 40 caliber/11th Year Type guns were intended for use against destroyers, and fired base-fuzed projectiles with thinner shell walls allowing a larger bursting charge than the 50 caliber/3rd Year Type guns for potential use against armored ships. The lower velocity 40 caliber gun had a useful life expectancy of 800 to 1000 effective full charges (EFC) per barrel.[1]
Citations
- ^ a b c d Campbell (1985), pp. 190–191.
- ^ Campbell (1985), pp. 173, 191.
- ^ Fairfield (1921), p. 156.
- ^ Webber (1975), pp. 14–16, 40–62.
References
- Campbell, John (1985). Naval Weapons of World War Two. Annapolis, Maryland: Naval Institute Press. ISBN 0-87021-459-4.
- Fairfield, A.P. (1921). Naval Ordnance. The Lord Baltimore Press.
- Webber, Bert (1975). Retaliation: Japanese Attacks and Allied Countermeasures on the Pacific Coast in World War II. Oregon State University Press. ISBN 0870710761.
This page was last edited on 14 December 2023, at 18:04