2S7 Pion (M1975) Russian 203mm Self-Propelled Gun (SPG)

2S7 Pion

Self-Propelled Gun (SPG)

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Basic Information

Name

2S7 Pion (M1975) Russian 203mm Self-Propelled Gun (SPG)

Designation

2S7 Pion

Alternate Designation

2S7 Pion; M-1975 (NATO designation)

Equipment Type

Self-Propelled Gun (SPG)

Manufacturer

Kirov Factory, St. Petersburg, Russia (chassis) Barrikady Plant, Volgograd, Russia (gun and mount)

Date of Introduction

1975

Description

The 2S7 Pion ("peony") or Malka is a Soviet self-propelled 203mm heavy artillery. "2S7" is its GRAU designation. It was identified for the first time in 1975 in the Soviet Army and so was called M-1975 by NATO (the 2S4 Tyulpan also received the M-1975 designation), whereas its official designation is SO-203 (2S7). Its design is based on a T-80 chassis carrying an externally mounted 2A44 203 mm gun on the hull rear. The 203-mm 2S7 Pion (M1975) (2S7/SO-203) is the largest tracked self-propelled gun in the Russian inventory.

Ground Specifications

Crew 7

Mobility Type Tracked

Main Weapon 2A44 203 mm gun

Engine V-12 Turbocharged Diesel (840 hp)

Active Protection None

Max Speed 51.0 km/h

Range 500.0 km

Variants

2S7 Pion The 2S7 Pion is the original variant of the 2S7 family, it was originally designed to be capable of delivering a small nuclear payload against NATO forces. Its primary role on a modern battlespace is that of long-range fire support.

2S7M Malka An improved variant, which entered service in 1983, improved the gun's fire control systems, increased the rate of fire from 1.5 to 2.5 rds/min to 2.5 rounds per minute, and increased the ammunition load to eight projectiles.

BTM-4 Trench Digger INA

System

Alternative Designation 2S7 Pion; M-1975 (NATO designation)

Type Self-Propelled Gun (SPG)

Caliber 203 mm

Manufacturer Kirov Factory, St. Petersburg, Russia (chassis) Barrikady Plant, Volgograd, Russia (gun and mount)

In Service 1976-Present

Family S27

Crew 7 ea

Chassis Obiekt 216

Emplacement Time 5-6 min

Displacement Time 3-5 min

Dimensions

Length, Gun Forward 13.12 m

Length, Hull 10.5 m

Width 3.38 m

Height 3.0 m

Weight, Combat 46,500 kg

Ground Pressure 0.8kg/cm² (78453Pa) (11.38psi)

Ground Clearance 0.4 m

Automotive

Engine Name Model V-46-I

Engine Type V-12 Turbocharged Diesel

Engine Power 840 hp

Transmission Manual

Cruising Range 500 km

Speed, Maximum Road 51 km/h

Speed, Average Cross INA

Speed Maximum Swim Not Amphibious

Gradient 40 %

Side Slope 20 %

Vertical Step 0.7 m

Trench 2.5 m

Fording Depth 1.2 m

Communications

Primary R-123M radio system

Secondary R-173 radio system

Crew Communcation System 1V116 crew communication system

Main Gun

System

Name 1 x 2A44, 203mm Cannon

Type Self-Propelled Gun (SPG)

Caliber 203 mm

Length, Barrel 56.2 Caliber

Weight, Barrel 7,800 kg

Barrel Life 450 rounds

Max Rate of Fire 1.5 rds/min

Effective Firing Range 37.5-55 km

Travel Lock Manually operated travel lock

Max Elevation +60 deg

Min Elevation -0 deg

Traverse Range 30 deg

Traverse Left 15 deg

Traverse Right 15 deg

Loader Type Load Assisting System

Muzzle Brake No

Fume Extractor No

Breech Mechansim Two-cycle screw type

Recoil Braking Hydraulic

Recuperation Pneumatic

Note #1 The 2S7 can fire ordinary and rocket-assisted HE-FRAG projectiles, chemical and nuclear projectiles. A standard HE-FRAG projectile,

Note #2 Regular Rates of Fire: eight rounds in five minutes; 15 rounds in 10 minutes; 24 rounds in 20 minutes; 30 rounds in 30 minutes; 40 rounds in 60 minutes.

Ammunition (Option 1)

Type HE FRAG

Caliber 203 mm

Muzzle Velocity 960 m/s

Projectile Weight 110 kg

Filler Weight 17.8 kg

Charge Weight 44 kg

Maximum Range 37.5 km

Basic Load 8 ea

Ammunition (Option 2)

Type RAP

Caliber 203 mm

Muzzle Velocity INA

Projectile Weight 103 kg

Filler Weight 13.8 kg

Charge Weight 44 kg

Maximum Range 47.5 km

Basic Load 8 ea

Fire Control

Name INA

Computerized FCS INA

Thermal Sight Vehicle Commander No

Thermal Sight Gunner Yes

Main Gun Stabilization Yes, a large recoil spade lowered to the ground, provides stability at all angles and charges.

Collimator K-1

Telescope PG-1M panoramic day telescope

Indirect Fire Yes

Direct Fire Yes, using the OP4M-87 telescope.

Protection

Hull Armor All-welded steel armor (10mm thickness), which provides protection against small arms fire and shell splinters.

Turret Armor INA

Applique Armor No

Explosive Reactive Armor No

Active Protection System No

Mine Clearing No

Self-Entrenching Blade (Dozer blade) Yes

NBC Protection Yes, The vehicle also includes an NBC protection system as well as anti-radiation linings that reduce the effects of radiation by three times.

Smoke Equipment INA

Note Additionally, the 2S7 can carry a Russian Strela-2 man-portable SAM system

Image Sources

Notes https://commons.wikimedia.org/wiki/File:203-mm_2S7_Pion_%287%29.jpg; https://en.m.wikipedia.org/wiki/File:Armata_samobiezna_2S7_Pion.jpg; https://charter97.org/en/news/2023/1/14/532202/;

Details

Country of Origin Russia

Category Self-Propelled Gun/Howitzer Artillery Systems

Land > Artillery > Self-Propelled Gun/Howitzer Artillery Systems

Classification

Domain

Ground

Equipment Status

Active

Dimensions

Length

13.12 m

Width

3.38 m

Height

3 m

Weight

46500 kg

Operators (9)

Russia

Ukraine

Belarus

Angola

Azerbaijan

Georgia

Slovakia

Uzbekistan

CFE Treaty

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