Originally developed as a small anti-torpedo boat gun. During World War I this weapon was mounted on some landing craft and also used as a landing gun. Used during World War II on some small coastal defense boats and submarine chasers.
| Designation | 6 cm/21 (2.4") Casemate Gun C/98 6 cm/21 (2.4") S-Bts KL/21 6 cm/21 (2.4") Bts KL/21 |
|---|---|
| Ship Class Used On | Boat Gun |
| Date Of Design | 1898 |
| Date In Service | 1900 (?) |
| Gun Weight | N/A |
| Gun Length oa | 107 in (0.121 m) |
| Bore Length | 99 in (2.505 m) |
| Rifling Length | N/A |
| Grooves | N/A |
| Lands | N/A |
| Twist | N/A |
| Chamber Volume | N/A |
| Rate Of Fire | 12 - 14 rounds per minute |
| Type | Separate |
|---|---|
| Projectiles and Weight | HE: 6.0 lbs. (2.71 kg) Shrapnel: 5.2 lbs. (2.38 kg) |
| Bursting Charge | HE: 0.32 lbs. (0.144 kg) |
| Projectile Length | HE: 7.5 in (19 cm) |
| Propellant Charge | 0.25 lbs. (0.115 kg) W.P. 07 |
| Cartridge | 1.74 lbs. (0.79 kg) 60 mm x 64 mm R |
| Muzzle Velocity | HE: 1,434 fps (437 mps) Shrapnel: 1,470 fps (448 mps) |
| Working Pressure | N/A |
| Approximate Barrel Life | N/A |
| Ammunition stowage per gun | N/A |
Data from:
- "Naval Weapons of World War Two" by John Campbell
- "Munitionslexikon Band2" by Karl R. Pawlas
- "Waffenlehre" by Richard Berlin Wille
Special help from H. Zertner and Peter Lienau
- 28 May 2008
- Benchmark
- 19 May 2012
- Updated to latest template
- 22 April 2016
- Added photographs of gun from early 1900s