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Sturm-Infanteriegeschütz 33B


StuIG-33B


Overview


Sturm-Infanteriegeschütz 33B

Frontal view of a Sturm-Infanteriegeschütz 33B seen on display at the Kubina tank museum in 2017.
Source: Alan Wilson - © CC BY-SA 2.0

Origin
Nazi Germany
Type
Assault gun
Entered service
1942
Status
Out of service
Development
1941 - 1942
Developer
Nazi Germany - Alkett
Production
1942
Producer
Nazi Germany - Alkett
Number produced
24
Designations
StuIG-33B / Sturm-Infanteriegeschütz 33B
Sturmpanzer III (post war colloquial nickname)
Notable users
Nazi Germany

Details


Facts StuIG-33B
General
Origin
Nazi Germany
Type
Assault gun
Crew
5
Dimensions
Weight
21 t
Length
5.4 m
Width
2.9 m
Height
2.3 m
Main armament
Type
150mm sIG-33/1
Mount
Casemate
Ammunition
30 shells
Elevation
-3° to +25°, manual
Traverse
5.5° left to 5.5° right, manual
Stabilizer
No
Sight
Rblf 36 or Sfl ZF1a direct fire gunsight
Secondary armament
Type
7.92mm MG34
Mount
Ball mount in the casemate
Ammunition
600 rounds, 150 ready to fire
Elevation
-15° to +20°, manual
Traverse
15° left to 15° right, manual
Stabilizer
No
Sight
1.8x telescopic sight
Chassis
Chassis type
Tracked chassis, 6 roadwheels
Layout
Drive sprocket front, idler rear
Tread
2.51 m
Track width
0.40 m
Track on ground
2.86 m
Suspension
Torsion bar
Automotive
Engine model
Maybach HL120 TRM
Engine type
12-cylinder water-cooled petrol
Power output
300 hp
Transmission
SSG 77 Aphon, manual, 6 forward, 1 reverse
Fuel
310 L
Mobility
Speed
20 km/h
Range
110 km on road
85 km off road
Power to weight ratio
14.3 hp/t
Obstacle crossing
Ground clearance
0.38 m
Wall
0.6 m
Trench
2 m
Gradient
30°
Fording
0.8 m
Protection
Armor type
Stell
Armor thickness
50 mm hull front
30 mm hull sides and rear
80 mm casemate front
50 mm casemate sides
15 mm roof
NBC system
No
Smoke system
No
Equipment
Night vision
No
Fire control
Rblf 36 or Sfl ZF1a direct fire gunsight
Optics
Scherenfernrohre 14 Z commander's sight
Radio
Yes (estimate)

Media


Armament


150mm sIG-33

The main armament is the sIG-33 that is in its original form a towed heavy infantry gun.

7.92mm MG34

An MG34 is mounted in a Kugelblende 30 ball mount to the right of the main gun.