Used almost exclusively for coastal defense at Needles, Malta and Gibraltar. One gun was located at Bere Island for a short time.
Wire-wound construction, with the wire extending for about 60 percent of the barrel length, and was trunnioned. The breech was a three-motion type as completed and the interrupted screw block was cylindrical. A total of 14 guns were manufactured. Most guns were later modified to use a single-motion breech mechanism and altered so as to be able to use the same coastal mountings as the 9.2"/47 (23.4 cm) Mark X. Modified guns were designated as 'C' IX.
One gun was more extensively modified to use a Welin breech block, the trunnion ring was replaced by a seating for the naval mounting and two additional short tubes were screwed and shrunk on. This gun was designated as the Mark IX/X and used on the gunnery school boat Drudge.
| Designation | 9.2"/47 (23.4 cm) Mark IX |
|---|---|
| Ship Class Used On | Coastal Defense and Drudge |
| Date Of Design | about 1895 |
| Date In Service | 1900 |
| Gun Weight | Mark IX: 26.8 tons (27.2 kg) Mark IX/X: 28.4 tons (28.9 tons) |
| Gun Length oa | 445.3 in (11.311 m) |
| Bore Length | 430.0 in (10.922 m) |
| Rifling Length | N/A |
| Grooves | N/A |
| Lands | N/A |
| Twist | N/A |
| Chamber Volume | 8,123 in3 (133.1 dm3) |
| Rate Of Fire | 3 - 4 rounds per minute |
| Type | Bag |
|---|---|
| Projectile Types and Weights | APC 2crh: 380 lbs. (172.4 kg) CPC 2crh: 380 lbs. (172.4 kg) |
| Bursting Charge | APC: N/A CPC: 35.4 lbs. (16.1 kg) |
| Projectile Length | APC: N/A CPC: 35.4 in (89.9 cm) |
| Propellant Charge | 120 lbs. (54.4 kg) MD37 107 lbs. (48.5 kg) MD26 109 lbs. (49.4 kg) SC150 |
| Muzzle Velocity | MD37: 2,778 fps (847 mps) Others: 2,748 fps (838 mps) |
| Working Pressure | N/A |
| Approximate Barrel Life | 450 rounds |
| Ammunition stowage per gun | N/A |
| Elevation | Distance |
|---|---|
| 15 degrees | 15,500 yards (14,170 m) @ 2,778 fps (847 mps) |
| Range | Muzzle Velocity | Vertical Steel Plate |
|---|---|---|
| 3,000 yards (2,740 m) | 2,751 fps (839 mps) | 14 in (35.6 cm) |
| 4,550 yards (4,160 m) | 9.2 in (23.4 cm) |
These figures are from "British Battleships: 1860 to 1950".
| Range | KC-type Armor |
|---|---|
| 3,000 yards (2,740 m) | 9.7 in (24.6 cm) |
| 6,000 yards (5,480 m) | 7.7 in (19.6 cm) |
| 9,000 yards (8,230 m) | 5.3 in (13.5 cm) |
These figures are from "The Grand Fleet: Warship Design and Development 1906-1922" and assume a 90 degree inclination.
| Designation |
|
|---|---|
| Weight | N/A |
| Elevation | Army Coastal Artillery: -5 / +15, +30 or +35 degrees 1 |
| Elevation Rate | N/A |
| Train | N/A |
| Train Rate | N/A |
| Gun recoil | N/A |
| Loading Angle | N/A |
- ^The Gibraltar guns were mounted on the crest in a special mounting allowing 20 degrees depression.
Data from:
- "Warrior to Dreadnought: Warship Development 1860-1905" by D.K. Brown
- "Naval Weapons of World War Two" and "British Naval Guns 1880-1945 No 7" article in "Warship Volume VI" both by John Campbell
- "British Battleships: 1860 to 1950" by Oscar Parkes
- 08 May 2008
- Benchmark
- 11 February 2012
- Updated to latest template
- 14 April 2013
- Added pictures