Data Quality88%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the towed artillery & mortars category.
01 / Overview
203 mm howitzer M1931 (B-4)
Category
Country
Production
1932–1945
Quantity
871
Operators
Conflicts
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
TOWED ARTILLERY & MORTARS · INTERWAR PERIOD
7
PERFORMANCE/PRICE
85
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the towed artillery & mortars category, regardless of era.
02 / Specs & Design
◎General6MOD.6
- Service Entry Year1933
- Combat Weight17,700 kg
- Travel Weight19,000 kg
- Crew15
- Carriage TypeBox Trail
- In ServiceYes
◈Ordnance6MOD.6
- Calibre203 mm
- Barrel Length (calibres)24.1
- Ordnance TypeSeparate loading charge and projectile
- Breech TypeInterrupted Screw
- Recoil SystemHydro-Pneumatic
- Muzzle BrakeNo
▣Performance5MOD.5
- Maximum Range (standard)18 km
- Muzzle Velocity607 m/s
- Rate of Fire (sustained)0.25
- Elevation0° to 60°
- Traverse8°
◇Ammunition4MOD.4
- Projectile Weight100 kg
- Ammunition TypesHE
- Charge Zones12
- HE RoundYes
◆Mobility2MOD.2
- Self-PropelledNo
- Prime MoverAT-T artillery tractor (B-4M variant)
▤Dimensions3MOD.3
- Length11.15 m
- Width2.7 m
- Height2.5 m
⬢Production2MOD.2
- Total Production871
- Production Start1,932 year
▲Self-Propelled Chassis1MOD.1
- Suspensiontracked
03 / History
SERVICE LIFESPANStill in Service
- 1932Production started
- 1939First deployment: Winter War
- 1945Production ended
94
years in service
13
years in production
871
units produced
4
countries operating
ⓘ The producing country still actively operates it. 1 countries retired it.
04 / Conflicts
203 MM HOWITZER M1931 (B-4) · CONFLICTS SERVED IN0% win·100% loss
Total Conflicts
1
Victories
0
Ongoing
0
Losses
1
ⓘ Shown only from conflicts recorded in our database.
05 / Operators
Operator Countries5country
06 / MASS Score
TOWED ARTILLERY & MORTARS RANKING Towed Artillery & Mortars · Interwar Period
MASS RANKINGSMASS ↗
93TOWED ARTILLERY & MORTARS7INTERWAR PERIOD · TOWED ARTILLERY & MORTARS959RUSSIA · ALL WEAPONS56PERFORMANCE/PRICE · TOWED ARTILLERY & MORTARS
ⓘ Rankings are within theTowed Artillery & Mortarscategory.
📖 TERMS ON THIS PAGE4terms
A towed artillery carriage configuration where the gun is mounted between two wheels with a box-like structure connecting them.
High Explosive (HE) round: an artillery or mortar projectile containing explosive filler designed to inflict damage through blast and fragmentation effects.
Recoil system using a combination of liquid and compressed gas to absorb and return energy from firing.
A breech mechanism in artillery where the screw threads are interrupted to allow quick opening and closing of the breech.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources