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15 cm/50 41st Year Type
| Field | Value |
|---|---|
| name | 15 cm/50 41 Year Type |
| image | Agano twin turrets closeup 300px.jpg |
| caption | Twin turrets on Agano, October 1942 |
| origin | Japan |
| type | Naval gun, coastal defence |
| is_ranged | yes |
| is_artillery | yes |
| service | 1913-1945 |
| used_by | Imperial Japanese Navy |
| wars | World War I |
| World War II | |
| design_date | 1908 |
| weight | 8360 kg |
| length | 7.8 m |
| part_length | 7.6 m |
| cartridge | 100 lb |
| caliber | 6 in |
| rate | 6 (effective) |
| velocity | 850 m/s |
| range | Kongō & Fusō: 18000 m at 30° |
| Agano: 21000 m at 45° | |
| elevation | Kongō & Fusō: -5 to +30 |
| Agano: -5 to +55 | |
| traverse | Kongō & Fusō: -70 to +70 |
| Agano: -150 to +150 |
World War II Agano: 21000 m at 45° Agano: -5 to +55 Agano: -150 to +150
The 15 cm/50 41st Year Type gun was a naval gun used by the Imperial Japanese Navy before and during World War II. It had a 152 mm bore with a length of 7.6 m (50 calibre) and fired 45.4 kg shell for a distance of 18000 m (in single mount version) or 21000 m (in the later twin mounts). The gun was first used in single casemates on the Kongō-class battlecruisers and Fusō-class battleships and later in the Agano-class light cruisers in twin mountings.
History
The Type 41 was a Japanese version of the Vickers "Mark M", originally introduced by Vickers-Armstrong (Barrow) as the secondary battery for the Kongō-class. These original guns were designated by the Japanese Navy as the "Mark II", whereas the Japanese-designed copy (adopted from 1912) were designated as the "Mark III".
In the 1930s, the Kongō-class were modernized, at which time these guns were replaced by new 12.7 cm/40 DP guns. The old guns were placed in storage and were reused on the Agano-class. Some were taken to Guam and were used for coastal defense batteries.
In the Agano-class, the gun could elevate to 55° for anti-aircraft fire; however, its manual loading method allowed a rate of fire of only about 6 rounds per minute, which significantly limited its utility as an anti-aircraft weapon.
References
Bibliography
References
- Campbell, ''Naval Weapons of WWII'', p.189.
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