Houfnice 203mm M1931 B4 – Procházka Kolem

Houfnice 203mm M1931 B4
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203 mm Houfnice Mod. 1931 (B-4)
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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	Sovětský svaz
Výrobce	Barrikady Plant
Production Years	1932–1945
Primary Role	Siege Artillery / Crushing Fortifications
Přezdívka	Stalin’s Sledgehammer (coined by German soldiers)

Technické specifikace

Ráže	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)
Posádky	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 Berlín 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.

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