Data Quality85%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the field guns category.
01 / Overview
21 cm K 12 (E)
Category
Country
Prime contractor
Production
1938–1940
Quantity
2
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
FIELD GUNS · INTERWAR PERIOD
10
PERFORMANCE/PRICE
30
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the field guns category, regardless of era.
02 / Specs & Design
◎General3MOD.3
- Service Entry Year1939
- Combat Weight302,000 kg
- Carriage TypeRailway Mounting
◈Ordnance6MOD.6
- Calibre211 mm
- Barrel Length (calibres)158
- Ordnance Typerailroad gun
- Breech TypeSliding Block
- Recoil SystemHydro-Pneumatic
- Tube Life (rounds)65
▣Performance4MOD.4
- Maximum Range (standard)115 km
- Muzzle Velocity1,500 m/s
- Elevation25° – 55°
- Traverse0° 25' on mounting; 360° on Vögele turntable
◇Ammunition3MOD.3
- Projectile Weight107.5 kg
- Ammunition TypesHE
- HE RoundYes
◆Dimensions1MOD.1
- Length41.3 m
▤Production2MOD.2
- Total Production2
- Production Start1,938 year
03 / History
SERVICE LIFESPANRetired
- 1938Production started
- 1939First deployment: World War II
- 1940Production ended
- 1942Entered service
88
years in service
2
years in production
2
units produced
0
countries operating
ⓘ The producing country no longer actively operates it. 1 countries retired it.
05 / MASS Score
FIELD GUNS RANKING Field Guns · Interwar Period
MASS RANKINGSMASS ↗
ⓘ Rankings are within theField Gunscategory.
📖 TERMS ON THIS PAGE4terms
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.
Method of transporting artillery by mounting it on a railway flatcar for movement along rail lines.
A breech mechanism in artillery where a solid block slides horizontally to open and close the breech for loading.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources