Updated 12 October 2013
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Actual bore diameter of all guns was 23.8 cm (9.37"). |
Austria-Hungary Armored Cruiser Erzherzog
Ferdinand Max in December 1912
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Aft turret on Austria-Hungary Coast Defense
Ship Budapest
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Armored cruiser Sankt Georg
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24 cm/40 gun being removed from Budapest
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| Designation | 24 cm (9.4") L/40 K94 Krupp
24 cm (9.4") L/40 K97 Skoda 24 cm (9.4") G. L/40 K/01 Skoda |
| Ship Class Used On | K94: Kaiser Karl IV and Monarch
class
K97: Habsburg, Arpad, Babenburg and Erzerzog class K/01: Sankt Georg |
| Date Of Design | K94: 1894
K97: 1897 K/01: 1901 |
| Date In Service | K94: 1898
K97: 1904 K/01: 1904 |
| Gun Weight
(see Note 1) |
K94: 27.85 tons (28.3 mt) without
breech
K97: 27.85 tons (28.3 mt) without breech and breech 1,451 lbs. (658 kg) K/01: 28.15 tons (28.606 mt) without breech |
| Gun Length oa | 378 in (9.600 m) |
| Bore Length | 349 in (8.866 m) |
| Rifling Length | 286 in (7.277 m) |
| Grooves | (72) 0.059 in D x 0.274 in W (1.5 mm D x 6.97 mm W) |
| Lands | 0.138 in (3.5 mm) |
| Twist | RH increasing 0 to 1 in 25 |
| Chamber Volume | N/A |
| Rate Of Fire
(see Note 2) |
K94 - 0.25 to 0.33 rounds per minute
K97 - about 2 rounds per minute K/01 - 2.5 rounds per minute |
| Notes:
1) "Naval Weapons of World War One" says that the K97 gun "weighed 307,000 kg (plus 658 kg breech)" but this is an impossibly high value. I believe that the author mistook the twin turret weight for the gun weight. 2) The K94 had manually operated hoists, which greatly affected the rate at which rounds could be delivered to the guns. |
|
| Type | Separate |
| Projectile Types and Weights | K94 guns
APC L/3.5 - 468.9 lbs. (212.7 kg) CPC L/4.4 - 468.9 lbs. (212.7 kg) K97 and K/01 guns
|
| Bursting Charge | K94 guns
APC L/3.5 - 5.1 lbs. (2.3 kg) CPC L/4.4 - 47.2 lbs. (21.42 kg) K97 and K/01 guns
|
| Projectile Length | APC L/3.5 - about 33.0 in (84 cm)
CPC L/4.4 - about 41.6 in (105.6 cm) |
| Propellant Charge | K94 - 91.5 lbs. (41.5 kg) 21/700 mm M/97
K97 - 101.7 lbs. (46.15 kg) 21/700 mm M/97 K/01 - 99.2 lbs. (45.0 kg) |
| Cartridge Case Weights | K94 - 146.6 lbs. (66.5 kg)
K97 - 157.6 lbs. (71.5 kg) K/01 - 155.3 lbs. (70.45 kg) |
| Muzzle Velocity | K94 - 2,264 fps (690 mps)
K97 - 2,313 fps (705 mps) K/01 - 2,379 fps (725 mps) |
| Working Pressure | N/A |
| Approximate Barrel Life | N/A |
| Ammunition stowage per gun
(see Note) |
Monarch - 80 rounds
Sankt Georg - 80 rounds Others: N/A |
| Note: Outfit for Monarch class and Sankt George was 40 APC and 40 HE per gun. The Hapsburg class carried 80 rounds per gun. | |
| Elevation | Range |
| K94 Range @ 4.78 degrees | 6,560 yards (6,000 m) |
| K94 Range @ 10.48 degrees | 10,940 yards (10,000 m) |
| K94 Range @ 24.93 degrees | 17,280 yards (15,800 m) |
| K97 Range @ 16.25 degrees | 13,120 yards (12,000 m) |
| K/01 Range @ 9.15 degrees | 10,940 yards (10,000 m) |
| Note: It should be understood that the maximum range of these guns could not be used and that the range tables of the time rarely exceeded 13,120 yards (12,000 m). | |
| Range | Vertical Iron Plate |
| 6,560 yards (6,000 m) | 16.9 in (43 cm) |
| 11,000 yards (10,000 m) | 11.8 in (30 cm) |
| 17,280 yards (15,800 m) | 10.2 in (26 cm) |
| Range | Vertical Harvey Plate |
| 10,940 yards (10,000 m) | 7 in (18 cm) |
| Range | Vertical Krupp Cemented Plate |
| 10,940 yards (10,000 m) | 4.7 in (12 cm) |
| Note: Data from "Austria-Hungary's Monarch Class Coast Defense Ships" and from "Naval Weapons of World War One." | |
| Range | Vertical Krupp Cemented Plate |
| APC @ (6,000 m) | 9.4 in (23.9 cm) |
| CPC @ (6,000 m) | 7.4 in (18.8 cm) |
| CPC @ (10,000 m) | 4.4 in (11.1 cm) |
| CPC @ (12,000 m) | 3.6 in (9.2 cm) |
| Note: Data from "Naval Weapons of World War One." | |
| Range | Vertical Krupp Cemented Plate |
| APC @ (1,000 m) | 11.0 in (28 cm) |
| Note: Data from "Naval Weapons of World War One" which also notes that this gun could penetrate (52 cm) of vertical wrought Iron plate at (5,000 m). | |
| Designation | Single Turret
Kaiser Karl IV (2): K94 Habsburg (1): K97 Two-gun Turrets
Two-gun Turret
|
| Weight
(see Note 4) |
K94 single: 120.9 tons (122.9 mt)
K94 twin: 189.7 tons (192.7 mt) K97 twin: 302.2 tons (307 mt) Others: N/A |
| Elevation | K94 single: -4 / +20 degrees
K97 single: -4 / +20 degrees K94 twin: -4 / +25 degrees
K/01: N/A |
| Elevation Rate
(see Note 5) |
K94 single: 0.8 degrees per second
K94 twin: 1.9 degrees per second K97 single and twin: 0.5 degrees per second K/01: N/A |
| Train | +130 / -130 degrees |
| Train Rate | K94 twin: 5.2 degrees per second
K97 single and twin: 4.4 degrees per second Others: N/A |
| Gun recoil | K/01: 23.1 in (58.6 cm) nominal
Others: N/A |
| Loading Angle | +4 degrees |
| Notes:
1) The Monarch class with their K94 turrets were the first Austro-Hungarian battleships to have fully enclosed mountings. The K94 mountings had manually powered hoists for each gun and the shells were pneumatically rammed. Each turret had a crew of 20 men. 2) K97 mountings were electrically powered for training, elevation and ramming. Hoists were also electrically powered. Twin turrets required a crew of 20 men. 3) K/01 mountings used electric power for elevation. Rammers were pneumatically powered. Each gun had its own ammunition hoist. Each twin turret required a crew of 20 men. 4) As described in the Gun Characteristics note, I believe that the value given in "Naval Weapons of World War One" for the gun weight is actually the twin turret weight. 5) Elevation rates from "Naval Weapons of World War One," but I have to wonder if these are misprints as they seem unusually slow for the single K94 and for the single and twin K97 mountings, especially as compared to the K94 twin mounting elevation rate. 6) The pre-dreadnought Budapest was reactivated in 1918 and had its forward turret removed. A 38 cm/L17 Skoda howitzer was mounted in its place, but firing trials showed poor accuracry due to the ship's roll after firing. The howitzer was later removed and the ship did not take part in the final actions of the war. |
|
20 November 2012 - New datapage
12 October 2013 - Added outfit and turret
information