130 mm towed field gun M1954 (M-46)
The 130 mm towed field gun M-46 (Russian: 130-мм пушка M-46) is a manually loaded, towed 130 mm artillery piece, manufactured in the Soviet Union in the 1950s. It was first observed by the west in 1954. There is also a Chinese copy, called the Type 59.
|M-46 or KS-30|
M-46 130mm field gun
|Place of origin||Soviet Union|
South African Border War
Yom Kippur War
Angolan Civil War
Syrian Civil War
Yemeni Civil War (2015–present)
|Mass||7.7 t (16,975 lbs)|
|Length||11.73 m (38 ft 6 in)|
|Barrel length||6.76 m (22 ft 2 in) L/52|
|Width||2.45 m (8 ft)|
|Height||2.55 m (8 ft 4 in)|
|Shell||separate-loading charge and projectile|
|Caliber||130 mm (5.1 in)|
|Elevation||-2.5° to 45°|
|Rate of fire||6 (normal)|
|Muzzle velocity||930 m/s (3,051 ft/s)|
|Maximum firing range||27.5 km (17 mi) (unassisted) 38 km (23.61 mi) (assisted)|
For many years, the M-46 was one of the longest range artillery systems around, with a range of more than 27 km.
The order was given in April 1946 to design a "duplex" artillery system to replace the obsolete 122 mm gun M1931/37 (A-19), 152 mm howitzer-gun M1937 (ML-20) and other World War II era field guns, such as 122 mm Model 1931, 152 mm Model 1910/30, 152 mm Model 1935 (BR-2). The new systems, designed by the factory No 172 (MOTZ), shared the same carriage and were given the designators M-46 (130 mm) and M-47 (152 mm). The respective GRAU designators are 52-P-482 and 52-P-547. The development phase was finished in 1950 and one year later series production started. Many M-46s were exported.
A second "duplex" artillery system was subsequently designed by FF Petrov's design bureau at Artillery Factory No 9. This comprised a 122 mm Gun and a 152 mm Howitzer. The 122 mm Gun D-74 was a competitor to the M-46; and while many were produced, the M-46 became the only long range Gun in Soviet service until new 152 mm Guns in the 1970s.
The M-46 was developed from the M-36 130 mm naval gun used on ships and for coast defence. It is a true gun, being unable to fire much above 45° and having a long barrel and a single propelling charge. In contrast, most Western field guns of this period had a dual high and low angle fire capability, a gun-howitzer.
It has a 52 calibre barrel with a tied jaw horizontal sliding-block breach and ‘pepperpot’ muzzle brake. The latter is not notably efficient, but subjective reports suggest that it is quite effective in reducing muzzle flash. The hydro-pneumatic recoil system comprises a buffer below the barrel and a recuperator above the barrel. The long barrel enables a substantial propelling charge by providing more length in which to achieve ‘all-burnt’ and hence projectile acceleration space and thus achieve its 930 m/s muzzle velocity.
The barrel is mounted on a split-trail carriage, with deep box section trails and foam filled road wheels on the ground when firing and 50° of top traverse. The small shield protects little more than the sights, possible including from the effects of muzzle blast, and some protection from machine gun fire in anti-tank engagements. The gun has long and robust trails to provide stability when firing, a large detachable spade is fitted to the end of each when the gun is brought into action.
Non-reciprocating sights are standard Soviet pattern, designed for one-man laying. Included are a direct fire anti-tank telescope, a panoramic periscopic indirect-fire sight (a dial sight) in a reciprocating mounting, an angle of sight scale, and a range drum engraved with the range (distance) scale, coupled to a mounted elevation levelling bubble. The range drum enables the standard Soviet technique of semi-direct fire when the piece is laid visually on the target and the range set on the range drum. An APN-3 was later provided for direct fire at night in place of the day telescope.
For travel, the gun is towed via a two-wheeled limber fitted to the end of the closed trails, with the spades removed and carried on each trail. Simple jacks on the trails just behind the main wheels are used to lift and support the closed trails so that the limber can be connected. The barrel and recuperator are pulled back between the closed trails and locked in a travelling position. There is a large bicycle chain arrangement on the right trail for this, and a compressed air cylinder, charged by the gun firing, is used to bring the barrel forward when the gun is brought back into action. It takes about four minutes to bring the gun into action, the normal detachment is eight strong.
Propelling charges are in metal cartridge cases and loaded separately from the projectile. Projectiles originally included HE fragmentation, Armour Piercing solid shot, smoke, illuminating and chemical. HE shells weigh some 33 kg. Illuminating shells have a substantially lower muzzle velocity. APHE and extended range shells were introduced later. Maximum rate of fire is probably 6-7 rounds/minute, and about 70 rounds/hour. The standard Soviet unit of fire was 80 rounds.
The M-46 was first seen openly at the 1954 May Day Parade in Moscow. It initially replaced the 100 mm BS-3 field and anti-tank gun. However, its long range made it well suited for counter-battery actions - some western troops on its receiving end have reported poor fragmentation, and large fragments would be consistent with the counter-battery purpose. Its Soviet use with an integrated fire-control system including SNAR-2 radars has also been reported. In Soviet service, M-46 battalions were in Army and Front artillery brigades.
It is or has been in service with at least 25 countries and has been license manufactured in China as the Type 59. It was replaced in Soviet/Russian inventory by the 2A36 Giatsint-B and the self-propelled 2S5 Giatsint-S. Several companies, like Soltam and RDM Technology BV, have presented upgrade packages for the gun. These include, for instance, an upgrade to a 45 caliber 155 mm gun.
The M-46 saw extensive combat service with the People's Armed Forces for the Liberation of Angola (FAPLA) during the Angolan Civil War and South African Border War. From the mid to late 1970s Angolan M-46s were deployed with some success in the counter-battery role against South African artillery units, which possessed comparatively short-ranged BL 5.5-inch Medium Guns. South Africa later acquired six M-46s from Israel for evaluation purposes; this likely influenced its development of the G5 howitzer, which was adopted to counter the range and effectiveness of the FAPLA field guns. Cuba also deployed M-46 batteries of its own in support of FAPLA operations during its lengthy military intervention in Angola. Cuban and FAPLA M-46s were used most notably during the Battle of Cuito Cuanavale, where individual guns were deployed in ones or twos rather than concentrated in single positions to reduce the threat posed by counter-battery fire from South African G5s. Cuban tacticians were able to repeatedly stall a South African mechanized and armored offensive by using minefields to channel the attackers into bottlenecks where the M-46s could concentrate their fire.
A version of this gun, possibly the Chinese-manufactured Type 59-1, is suspected to have been used by North Korea for shelling the South Korean island of Yeonpyeong in the Yellow Sea on 23 November 2010.
- M-47 - This is a 152 mm field gun (Russian: 152-мм пушка M-47 обр. 1953 г.) that was developed alongside the M-46. The M-47 had a range of 20,470 m and was far less successful than its 130 mm counterpart. Only a small number was built between 1954 and 1957. Externally, the M-46 and M-47 are virtually identical, except for the calibre.
People's Republic of ChinaEdit
- Type 59 - This is a licensed version of the M-46.
- Type 59-1 - This is a combination of the 130mm ordnance of the Type 59 with the carriage of the Type 60 (D-74 copy). The result is a gun with the same range as the M-46, but with a much lower weight of 6.3 t. The M59-1M is the Egyptian licence version. For the export market, a version with APU and redesigned carriage was developed. Also for the export market, a self-propelled variant, based on the Type 83 SPH was designed.
- Type GM-45 - For the export market, NORINCO (China North Industries Corporation) developed this upgrade package where the original barrel of the Type 59 is replaced by the 155/45 mm ordnance of the WA 021. The Type GM-45 has a maximum range of 39 km when ERFB-BB ammunition is used.
- The Cuban army operates two different, locally designed self-propelled versions of the M-46. One is based on the tracked chassis of the T-34-85 tank, while the other is based on a heavily modified KrAZ 6x6 truck. These and other modifications were shown for the first time during the 2006 military parade.
- SP-130 "Catapult" - Indian-designed self-propelled version, mounted on the hull of the Vijayanta tank.
- Metamorphosis IOB M46 FG - Another 155 mm upgrade (45 Calibre) of the 300 M-46, this one designed by Ordnance Factory Board (OFB). The upgraded M-46 has a range of 39 km. India's Ministry of Defence (MoD) has awarded a INR2 billion (USD27.2 million) contract on 25 October 2018 to the state-owned Ordnance Factory Board (OFB) to upgrade 300 of the Indian Army's (IA's) Soviet-era 130 mm/52 calibre M-46 field guns to 155 mm/45 calibre in a bid to augment its firepower.
- M-46S - This is an upgrade of an existing M-46 or Type 59, carried out by Soltam Systems Ltd. The original barrel is replaced by a new model of 155/45mm (western ammunition) for a range of 25.8 (HE) to 39 km (ERFB-BB). A 39-calibre barrel is optional. In March 2000, Soltam won a contract worth $47,524,137 for upgrading 180 M-46s to M-46S standard (Indian designator: 155/45mm (E1) Soltam). A follow-on deal for 250 retrofit kits was optioned for. In 2005, after only 40 howitzers were modified, the M-46S programme was terminated due to a fatal barrel explosion.
Democratic People’s Republic of KoreaEdit
The US Defense Intelligence Agency has reported the existence of a number of locally designed self-propelled artillery systems, including the SPG 130mm M1975, the SPG 130mm M1981 and the SPG 130mm M1991. Details are not available, but they appear to be M-46/Type 59s mounted on a tracked chassis “Tokchon”.
- M46/84 - This is a conversion that involved replacing the original 130 mm barrel with a new 155/45 mm barrel or 152mm barrel. With ERFB-BB ammunition, this version has a range of 38,600 m and with M05 152mm range exceeds 40 km.
- RDM Technology BV is yet another company that offers an upgrade of the M-46/Type 59 that involves fitting a new 155/45mm barrel.
- A412 - License-built Chinese Type 59-1 with D-20 carriage. In Romanian Army service, the A412 is known as the 130 mm towed gun M1982 (Romanian: Tun calibrul 130-mm tractat M1982). The A412 was also exported.
Type 59-1 was manufactured by Arsenal Resita under the designation A412 Model 1982 between 1982 and 1989. A maximum range of 33 kilometers was reached Using NORINCO's Base Bleed ammunition. The A412 cannon can fire a 7-8 rounds per minute. The A412 was exported to four other countries: Bosnia-Herzegovina, Cameroon, Guinea, and Nigeria.
- Frag-HE, 3OF33(with full charge 3VOF43) - range: 27,490 meters
- Frag-HE, 3OF33(with sperate charge 3VOF44) - range: 22,490 meters
- Frag-HE, ERFB-BB - Extended Range Full Bore - Base Bleed, range: 38,000 meters
- APCBC-HE-T, BR-482 and BR-482B - range: 1,140 meters
- Guided Shell,Firn-1 - range: 24,000 meters
- Algeria: 10
- Angola: 146 acquired from the Soviet Union and Bulgaria. 48 in service.
- Azerbaijan: 36 acquired from Bulgaria.
- Bangladesh: 62; Type 59-1 variant
- Bosnia-Herzegovina: 8; A412 variant
- Cambodia: Type 59-1s
- Cameroon: 12; A412 variant
- People's Republic of China: 234 in service in 2016; Type 59 and Type 59-1 variants
- Republic of the Congo: 5
- Democratic Republic of the Congo: 42; Type 59 and Type-59-1 variants
- Croatia: 19; M-46H1 variant
- Cuba: 197
- Egypt: 650; 250 M-46 and 400 Type 59-1M
- Eritrea: 39 acquired from Bulgaria.
- Ethiopia: 114
- Finland: 186 acquired from the Soviet Union and East Germany. In 2016, 36 are in service under designation K-54.
- Guinea: 12; A412 variant
- Guyana: 6
- India: ~600 in service and ~500 in store. 200 modified to 155mm caliber. 20 self-propulsed in service and 40 others on order.
- Iran: 726; 100 M-46 and 626 Type 59. An other estimation gives 985 M-46s.
- Iraq: 676; M-46 and Type 59 variants.
- Laos: 10
- Lebanon: 15-16
- Libya: 330
- Mongolia: 50
- Morocco: 18
- Mozambique: 24. 6 in service in 2016.
- Myanmar: 16
- Nigeria: 4; A412 variant. An other estimation gives 7 M-46s.
- North Korea: 210; 160 M-46 and 50 Type 59
- Oman: 15 acquired from unidentified source. Other source gives 12 M-46s and 12 Type 59-1s.
- Pakistan: 360; 100 M-46 and 260 Type 59. Other estimation gives 410 Type 59-1s in service in 2016.
- Peru: 30 to 36
- Romania: 75; A412 variant
- Serbia: 18
- South Sudan
- Sri Lanka: 12 to 30; Type 59 or Type 59-1 variant
- Sudan: 30 to 75; Type 59 variant
- Syria: 650
- Tanzania: 30 to 50; Type 59-1 variant.
- Thailand: 54; Type 59 variant
- Uganda: 6 acquired from Bulgaria.
- United Arab Emirates: 20; Type 59-1 variant
- Vietnam: 519
- Yemen: 93 received and ~60 in service in 2016.
- Zambia: 18; Type 59 variant
- Soviet Union
- Afghanistan: 428
- People's Socialist Republic of Albania: 100; Type 59 variant
- People's Republic of Bulgaria: 72
- East Germany: 175
- Israel: Captured from Syria and Egypt. 100 in store.
- Islamic State: 34
- Palestine Liberation Organization: 10 acquired from East Germany.
- People's Republic of Kampuchea: 30
- Russia: in store
- Somalia: 10; Type 59 variant
- South Africa: 6 on loan from Israel, later returned.
- South Lebanon Army: 5 acquired from Israel.
- Yugoslavia: 186
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