Haubits 203mm M1931 B4 - Gå Rundt

203 mm M1931 B-4
Land	URSS
Type	Tung haubits
Produceret	1932-1940'erne
Bygget	871

203 mm haubits M1931 var en 203 mm sovjetisk tung haubits. Under anden verdenskrig var det under kommando af Stavkas strategiske reserve. Det fik tilnavnet "Stalins forhammer" af tyske soldater. Disse kanoner blev brugt med succes mod tunge tyske befæstninger og i bykamp for at knuse beskyttede bygninger og bunkere. Dette våben blev brugt indtil slutningen af krigen i slaget ved Berlin, hvor Den Røde Hær ville bringe disse kanoner op på klos hold for at smadre tyske befæstninger med deres tunge 203 mm granater. I foråret 1944 blev et KV-1s tankchassis brugt til at skabe en selvkørende variant, S-51. Den kraftige rekyl fra mundingseksplosionen kastede besætningen ned fra deres sæder og beskadigede transmissionen, og den blev derfor aflyst.

Haubits 203mm M1931 B4
Fotograf	Unknow
Lokalisering	Unknow
Billeder	200

203mm B-4 Howitzer 001

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203mm B-4 Howitzer 009

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203 mm haubits Mod. 1931 (B-4)
Fotograf	Unknow
Lokalisering	Unknow
Billeder	21

203 mm haubits M1931

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General Overview

The B-4 was a Soviet high-power heavy howitzer used to destroy heavily fortified positions and bunkers during World War II.

Official Name	203 mm howitzer M1931 (B-4)
Place of Origin	Sovjetunionen
Producent	Barrikady Plant
Production Years	1932–1945
Primary Role	Siege Artillery / Crushing Fortifications
Kælenavn	Stalin’s Sledgehammer (coined by German soldiers)

Tekniske specifikationer

Kaliber	203 mm (8 inch)
Mass (Combat)	17,700 kg (39,022 lbs)
Mass (Travel)	19,000 kg (41,888 lbs)
Shell Weight (HE)	100 kg (220 lbs)
Maximum Firing Range	18 km (11 mi)
Rate of Fire	Approx. 1 round every 4 minutes (Slow due to shell weight)
Carriage Type	Tracked Carriage (Unique feature for stability)
Besætning	15
Towing Vehicle	Voroshilovets or Komintern Artillery Tractor

Operational Role in WWII

The B-4 was held under the direct command of the Stavka Strategic Reserve and was deployed only where its massive firepower was required.

Winter War: Known as the “Karelia Sculptor” for its effectiveness against Finnish pillboxes on the Mannerheim Line.
Urban Combat: Used for direct fire against German fortified buildings and bunkers, notably during the Battle of Berlin in 1945.
Loading Challenge: Due to the heavy 100 kg projectile, a special hoisting crane was often used to assist in loading the breech.

Key Innovation: The unique tracked carriage allowed the gun to be fired directly from the ground without a separate firing platform, a significant innovation for heavy artillery of that era.