During World War II Battery Hamburg at Nordeney was still in action and later was moved to Cherbourg. This was the first German heavy gun to use brass cartridge cases. This gun or a very similar one was built by Krupp for Austria-Hungary coast defense ships. The first German twelve guns were constructed of A tube, two reinforcing layers and a jacket. Later guns had three reinforcing hoops added near the breech, apparently to compensate for the higher gas pressures generated by smokeless propellants. Actual bore diameter of all guns was 23.8 cm (9.37"). Unless otherwise noted, the data that follows is for the German 24 cm/40 SK L/40 guns. |
![]() German Armored Cruiser Wittlesbach
|
.
|
Designation | 24 cm/40 (9.4") SK L/40 |
Ship Class Used On | Kaiser Friedrich III, Wittelsbach, Fürst Bismarck and Prinz Heinrich Classes |
Date Of Design | 1894 |
Date In Service | 1898 |
Gun Weight | Original 12 guns: 53,000 lbs. (24,040
kg)
Later guns: 56,526 lbs. (25,640 mt) |
Gun Length oa | 376 in (9.550 m) |
Bore Length | 349 in (8.866 m) |
Rifling Length | N/A |
Grooves | N/A |
Lands | N/A |
Twist | N/A |
Chamber Volume | 4,406 in3 (72.2 dm3) |
Rate Of Fire
(see Mounting Notes) |
C/92 Turrets: about 1.5 rounds per
minute
C/98 Turrets: about 3 - 4 rounds per minute |
Type | Separate |
Projectile Types and Weights
(see Note 3) |
AP L/2.6 C/01 - 308.6 lbs. (140 kg)
Common L/2.8 C/01 - 308.6 lbs. (140 kg) HE L/4,1 nose fuze - 332.9 lbs. (151 kg)
|
Bursting Charge | AP L/2.6 C/01: 7.67 lbs. (3.48 kg)
Common L/2.8 C/01: 6.35 lbs. (2.88 kg) Others: N/A |
Projectile Length | 1895 AP - N/A
1914 AP L/2,6 - about 24.4 in (62 cm) HE L/4,1 base fuze - about 38.6 in (98 cm) HE L/4,2 base and nose fuze - about 39.8 in (101 cm) |
Propellant Charge | 1895 - 91.2 lbs. (41.35 kg)
World War II - 103 lbs. (47 kg) RPC/38 (12/6.6) |
Muzzle Velocity | 1895 - 2,263 fps (690 mps)
World War II - 2,657 fps (810 mps) |
Working Pressure | N/A |
Approximate Barrel Life | N/A |
Ammunition stowage per gun | Kaiser Friedrich III and Prinz Heinrich:
75 rounds
Wittelsbach: 85 rounds Fürst Bismarck: 78 rounds Others: N/A |
Notes:
1) Actual Projectile designations were
as follows:
2) Propellant was in a brass cartridge case weighing 48.8 lbs. (25.15 kg) empty. 3) "Austria-Hungary's Monarch Class Coast Defense Ships" says the Austrian-Hungarian Monarch class carried armor piercing and explosive shells weighing 474 lbs. (215 kg) each. This weight is much heavier than the German projectiles for these weapons, but it is similar to the weight of shells for French 24 cm guns and Krupp-built 24 cm guns for the Netherlands Navy. Muzzle velocity for the Monarch class is not available. |
Elevation | With 308.6 lbs. (140 kg) Shell
(1890 design) |
Range @ 30 degrees
(max. elevation of turrets) |
18,500 yards (16,900 m) |
Range @ 45.8 degrees
(as coastal artillery) |
20,870 yards (19,080 m) |
Elevation | With 327.4 lbs. (148.5 kg) HE 4,2 Shell |
Range @ 45.8 degrees
(as coastal artillery) |
29,090 yards (26,600 m) |
Designation | Two-gun Turrets
Kaiser Friedrich III (2), Wittelsbach (2), Fürst Bismarck (2) and Prinz Heinrich (1): Drh.L. C/98 |
Weight | N/A |
Elevation | -5 / +30 degrees |
Elevation Rate | N/A |
Train | about +150 / -150 degrees |
Train Rate | N/A |
Gun recoil | N/A |
Loading Angle | +4 degrees |
Notes:
1) Rammers were pneumatically powered. Each gun had its own ammunition hoist. Each turret required a crew of 20 men. 2) A cutaway sketch of the turrets on the Austria-Hungary ship Monarch shows that the ammunition hoists for this mounting rotated with the gunhouse. From that, I would conclude that the German C/98 turret would have been similar. These assumptions are reflected in the Rate of Fire figures given above. |
22 November 2008 - Benchmark
06 April 2009 - Removed mention of Kurfürst
Friedrich Wilhelm class, added mention of Skoda guns, added pictures of
Erzherzog Ferdinand Max and Wittelsbach
20 November 2012 - Added details on projectiles
and made Austria-Hungary 24 cm guns a separate datapage
15 May 2013 - Additional Pictures page