Sturmpanzer I
15 cm sIG 33 (Sf) auf Panzerkampfwagen I Ausf B
Overview
Sturmpanzer I
Colorized photo of a Sturmpanzer I in the Soviet Union in June of 1942.
Source: Bundesarchiv Bild 101I-216-0406-37 -
© CC BY-SA 4.0
Origin
Nazi Germany
Type
Assault gun
Entered service
1940
Status
Out of service
Development
1940
Developer
Nazi Germany
-
Alkett
Production
February of 1940
Producer
Nazi Germany
-
Alkett
Number produced
38 converted from Panzer I chassis
Designations
Sturmpanzer I
Geschützwagen I
Bison
15-cm-schweres Infanteriegeschütz 33 (Sf) auf Fahrgestell Panzerkampfwagen I Ausf. B
Geschützwagen I
Bison
15-cm-schweres Infanteriegeschütz 33 (Sf) auf Fahrgestell Panzerkampfwagen I Ausf. B
Notable users
Nazi Germany
Details
Facts
Sturmpanzer I
General
Origin
Nazi Germany
Type
Assault gun
Crew
4 (commander, driver, gunner, loader)
Dimensions
Weight
8.5 t
Length
4.67 m
Width
2.06 m
Height
2.8 m
Main armament
Type
150mm sIG-33 infantry gun
Mount
Towed gun in open roof and rear superstructure
Ammunition
No ammunition storage on vehicle
In practice, 1 loaded plus 2 shells on vehicle
Elevation
-4° to +75°, manual
Traverse
11° in total, manual
Stabilizer
No
Chassis
Chassis type
Tracked chassis
Layout
5 roadwheels, drive sprocket front, idler rear
Suspension
Leaf spring
Automotive
Engine model
Maybach NL38 TR
Engine type
6-cylinder water-cooled petrol
Power output
100 hp
Transmission
Manual, 5 forward, 1 reverse
Mobility
Speed
35 km/h on road
Range
140 km on road
Power to weight ratio
8.5 hp/t
Obstacle crossing
Ground clearance
0.29 m
Protection
Armor type
Steel
Armor thickness
5 to 15 mm hull
10 to 13 mm superstructure
Open rear and roof
NBC system
No
Smoke system
No
Equipment
Night vision
No
Fire control
Rblf36 sight unit
Radio
No
Media
Sturmpanzer I
Red Army soldiers inspect a German Sturmpanzer I that was captured in the Moscow region.
Source: Pavel Troshkin
Copyright: Public domain
Sturmpanzer I
A Red Army soldier inspects a Sturmpanzer I that was captured in the Moscow region. Note the that the Sturmpanzer I mounted the entire sIG-33 with its large wheels still attached.
Source: Pavel Troshkin
Copyright: Public domain
Sturmpanzer I
A Sturmpanzer I in Greece in April of 1941.
Source: Bundesarchiv, Bild 101I-163-0328-15
Copyright: CC BY-SA 3.0
Related articles
150mm sIG-33
The Sturmpanzer I is armed with the 150mm sIG-33 infantry gun.
Sturmpanzer II Bison
The Sturmpanzer II was based on a widened and lengthened Panzer II chassis. This was a much better chassis for the sIG-33 than the Panzer I.