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ZSU-37



Introduction


ZSU-37

Oblique forward view of ZSU-37 self-propelled anti-aircraft gun.
Source: Unknown author - © Copyright lies with original owner

Origin
Soviet Union
Type
Self-propelled anti-aircraft gun
Entered service
1944
Status
Out of service
Development
Late 1943 - 1944
Developer
Soviet Union - Design bureau of the MMZ plant
Soviet Union - Design bureau of the GAZ plant
Production
1945 - 1946 (or up to 1948?)
Producer
Soviet Union - No. 40 MMZ (Mytishchi machine-building plant)
Number produced
75
Designations
ЗСУ-37 / Зенитная самоходная установка - 37 миллиметров (Cyrillic)
ZSU-37 / Zenitnaya Samokhodnaya Ustanovka 37
Russian for "anti-aircraft self-propelled mount"
Notable users
Soviet Union

Description


Introduction

The ZSU-37 is a World War 2 era self-propelled anti-aircraft gun of Soviet origin. It was developed at the later stages of World War 2 to accompany tank formations. Earlier Soviet self-propelled guns lacked both armor and tracked chassis, being unable to keep up with tank or to operate in the front line. ZSU-37 became operation just after World War 2 and could be seen in various parades on the Red Square in Moscow. The design was unsuccessful and only a small number was ever produced.

Design

The ZSU-37 is based on the chassis of the SU-76M self-propelled gun. This has the twin engine setup and transmission in the front, allowing for a large rear compartment. ZSU-37 is fitted with an open roof turret. Armament is the towed 37mm 61-K anti-aircraft gun, including the sighting equipment for both gunners.

Firepower

The ZSU-37 is armed with a single 37mm 61-K anti-aircraft gun. This is fed from 5 round clips. Cyclic rate of fire is over 150 rpm. Practical rate of fire is 50 to 60 rpm. Anti-aircraft ceiling is 4 km and the practical range against surface targets is 5 km. A total of 320 rounds are carried.

Fire control

Two gunners use collimator sights to aim the 37mm 61-K. One operates the traverse and the other the elevation. The ZSU-37 is even less effective against faster aircraft than the towed gun. The manually traversed turret is heavier and requires more effort to rotate.

Protection

The face hardened welded steel armor protects against small arms fire and shell splinters all around. Over the frontal arc the protection level is higher. The turret roof is open and the crew is vulnerable from above. There are no smoke grenade dischargers or NBC system.

Mobility

The tracked chassis is very similar to the SU-76M. This has two combined petrol engines in the front of the hull. The engines have been uprated to 80 hp each to cope with the increased weight over the SU-76M. A difficult for the Soviet forces was the post-WW2 was the petrol engines in the ZSU-37 due to the transition to diesel engines for all frontline vehicles.

Users

The Soviet Union was the only user of the ZSU-37. The need for a self-propelled anti-aircraft gun became evident during World War 2. Protracted development and other priorities resulted in protypes during the later stages of the war. The ZSU-37 was not actively used during World War 2. By the end of 1945 an experimental self-propelled anti-aircraft artillery battalion equipped with 12 ZSU-37 was formed. Production was limited since

Media


Details


Facts ZSU-37
General
Origin
Soviet Union
Type
Self-propelled anti-aircraft gun
Crew
6 (commander, driver-mechanic, 2 gunners, loader, radio operator)
Dimensions
Weight
12.2 t combat load
10.5 t empty
Length
5.25 m
Width
2.75 m
Height
2.18 m
Main armament
Type
37mm 61-K autocannon
Mount
Main gun in open roof turret
Ammunition
130 rounds ready in 5 round clips
190 rounds in storage boxes
Elevation
-5° to +85°, manual
Traverse
360°, manual
Stabilizer
no
Chassis
Chassis type
Tracked chassis, 6 roadwheels
Layout
Drive sprocket front, idler rear
Suspension
Torsion bar
Automotive
Engine model
GAZ-203 (uprated to 2x 80 hp for ZSU-37)
Engine type
Two combined 6-cylinder liquid-cooled petrol with carburetor
Power output
160 hp combined at 3.600 rpm (2x 80 hp)
Mobility
Speed
42 km/h on road
20 - 25 km/h off road
Range
250 to 330 km on road
Power to weight ratio
13 hp/t
Obstacle crossing
Ground clearance
0.32 m
Wall
0.6 m
Trench
1.7 m
Gradient
60 %
Fording
1.0 m
Protection
Armor type
Steel, face hardened welded hul and turret
Armor thickness
25 mm at 60° upper hull front
35 mm at 30° lower hull front
15 mm hull sides and rear
10 mm hull top
10 mm hull floor
Open roof turret
NBC system
No
Smoke system
No
Equipment
Night vision
No
Fire control
Mechanical sights, two collimator sights and a 1 meter stereoscopic range finder
Radio
10RK-12M or 12RT-3 radio
TPU-3F intercom

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