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M1975

130 mm self-propelled gun

M1975 self-propeled gun

The M1975 is armed with a Soviet SM-4-1 coastal defense gun

 
 
Country of origin North Korea
Entered service 1970s
Crew 8 ~ 9 men
Dimensions and weight
Weight ~ 25 t
Length (gun forward) ~ 7.8 m
Hull length ~ 6.3 m
Width ~ 2.6 m
Height ~ 2.6 m
Armament
Main gun 130 mm gun
Barrel length ?
Machine guns -
Projectile weight ~ 30 kg
Maximum firing range ~ 27 km
Maximum rate of fire 7 ~ 8 rpm
Sustained rate of fire 1 rpm
Elevation range ? to + 45 degrees
Traverse range ?
Ammunition load
Main gun ?
Machine guns -
Mobility
Engine A-650 diesel
Engine power 300 hp
Maximum road speed 40 - 45 km/h
Range 350 ~ 500 km
Maneuverability
Gradient 60%
Side slope 30%
Vertical step 0.8 m
Trench 2.85 m
Fording 1.1 m
Fording (with preparation) 1.5 m

 

   The M1975 is a North Korean 130 mm self-propelled gun. Its actual designation is unknown. The M1975 designation was allocated by a US Department of Defense. Number in the designation denotes the year when this system was first observed by US intelligence. This North Korean artillery system was adopted in the 1970s and is widely used to this day. As far as it is known the M1975 was not exported outside North Korea.

   This artillery system combines a modified version of a Soviet SM-4-1 130 mm towed coastal defense gun, mounted on a lightly armored tracked chassis. The SM-4-1 coastal defense gun was exported to a number of Soviet allies, including North Korea. It is still used by the North Koreans in its towed form. North Korea produced many examples of self-propelled artillery systems by mating existing towed artillery pieces with various chassis.

   This artillery system has a maximum range of around 27 km. Interestingly the SM-4-1 coastal defense gun is not compatible with other 130 mm ammunition, used by other Soviet army 130 mm artillery systems, such as the M-46. This gun is compatible only with naval ammunition. Today it is no longer a modern weapon and can not match performance of modern artillery systems.

   Maximum rate of fire is around 7-8 rounds per minute. Sustained rate of fire is around 1 round per minute.

   This artillery system is operated by a crew of 8 or 9 soldiers. The crew prepares the M1975 for firing within around 3 minutes from traveling. Before firing two large stabilizing spades are lowered to the ground at the rear of the hull.

   This self-propelled artillery system is based on a lightly armored tracked chassis. Most likely that it is a heavily modified Soviet ATS-59G artillery tractor. The original ATS-59G is powered by a 39-liter A-650 diesel engine, developing 300 hp. Actually it is a standard engine of a T-55 medium tank, developing 520 hp. However the ATS-59G has a rate reduced, which reduced the power to 300 hp in order to extend service life of the engine. The M1975 artillery system has a maximum road range of around 350 km on internal fuel and around 500 km with auxiliary fuel tanks. The same lightly armored chassis was used for other North Korean self-propelled artillery systems, such as M1974 152 mm self-propelled gun-howitzer, M1981 122 mm self-propelled gun and unidentified 100 mm self-propelled anti-tank gun.

   Armor of the M1975 provides some degree of protection for its crew against small arms fire and artillery shell splinters. The gun retains its original splinter shield. Though top of the superstructure is opened. In traveling order it can be covered with bows and canvas cover. Another version of the M1975 is used by the North Korean army. It lacks side shielding, but has a gun shield installed instead.

   This artillery system has no defensive armament, except firearms of its crew members.

 

 

 
M1975 self-propeled gun

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M1975 self-propeled gun

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M1975 self-propeled gun

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M1975 self-propeled gun

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