Engineering:2M-3
| 2M-3 | |
|---|---|
 2M-3M dual-purpose gun | |
| Type | Dual-purpose gun |
| Place of origin |  Soviet Union |
| Service history | |
| In service | 1949–1984 |
| Used by | Various |
| Wars | Various |
| Production history | |
| Produced | 1949–1984 |
| Variants | See Variants |
| Specifications | |
| Mass | 1,515 kg (3,340 lb) |
| Length | Barrel length: 2 m (6 ft 7 in) |
| Shell | 25×218mm |
| Calibre | 25 mm (0.984inch) |
| Barrels | 2 |
| Elevation | -10/+83° |
| Traverse | 360° |
| Rate of fire | Cyclic: 2 × 450 rounds per minute Practical: 2 × 270-300 rounds per minute |
| Muzzle velocity | 910 m/s (3,000 ft/s) |
| Effective firing range | Air: 1,700 m (1,900 yd) Sea: 2,300 m (2,500 yd) |
| Maximum firing range | 3,000 m (3,300 yd) |
The 2M-3 is a gun mount with two single 25 mm/79 (110-PM) caliber dual-purpose guns coupled together, developed in the USSR in the late 1940s. The gun was based from the 84-KM and first prototype was built in 1948.[1]
Design
The 2M-3 and 2M-3M cannons were used on numerous smaller ships and auxiliary vessels of the USSR production, used by the Soviet Navy, and also exported. They were installed on units with no radar fire-control systems.[2] The gun mount themselves were also exported, and the types were produced abroad.
In Poland , at least 146 2M-3M cannons were operated in total on ships - incl. on Project 183 torpedo boats, Project 151, Project 206F, Project 254M minesweepers, Project 918/918M patrol crafts. The last one was equipped with them in 1984, the ORP Gardno, after which they were replaced on new ships by the Polish ZU-23-2M cannons, also installed on older ships.[2] At the turn of 1989/90, the 2M-3M bases were installed on three more Project 205 missile boats converted into Border Guard patrol ships.[3] 2M-10 was an improved version of the 2M-8 gun mount but was never put into service.[1] In late 1940, BL-120-I and BL-120-II was intended to be equipped aboard the Stalingrad-class battlecruiser but the project was later cancelled and the only two built mounts were put on board the Soviet destroyer Neustrashimy.[1]
Among newer applications, guns of this type have been used, among others on Yemeni P-1022 patrol ships built in Australia in 2004.[4]
Variants
Soviet Union
- 2M-3
- 2M-3M
- 2M-8M – submarines
- 2M-10
- BL-130
- BL-120 (4M-120)
China
Gallery
2M-3 dual-purpose gun
2M-3M dual-purpose gun
2M-8M dual-purpose gun
See also
- Bofors 25 mm M/32
- 25 mm automatic air defense gun M1940 (72-K)
- Type 61 25mm AAA guns
- Type 96 25 mm AT/AA Gun
- 25 mm Hotchkiss anti-aircraft gun
References
- ↑ 1.0 1.1 1.2 "25 mm/79 (1") 2M-3". 19 January 2017. http://www.navweaps.com/Weapons/WNRussian_25mm-79_2m-3.php.
- ↑ 2.0 2.1 Ciślak, Jarosław (1995). Polska Marynarka Wojenna 1995. Warsaw: Lampart i Bellona. pp. 214. ISBN 83-86776-08-0.
- ↑ Ciślak, Jarosław (1995). Polska Marynarka Wojenna 1995. Warsaw: Lampart i Bellona. pp. 196. ISBN 83-86776-08-0.
- ↑ Z życia flot. Jemen. „Morza Statki i Okręty”. Warsaw: Magnum X. 2005. pp. 5-6.
- ↑ "CHN - Type 61 (37 mm dvojkanón) : Čína (CHN)" (in cs). https://www.valka.cz/CHN-Type-61-37-mm-dvojkanon-t39543.
External links
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