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Iron Duke Class Battleships Class Overview |
Dimensions, Machinery and Performance |
Length: |
622' 7" |
Engines: |
4 Parsons steam turbines |
Beam: |
89' 8" |
Boilers: |
18 (coal fired) see notes |
Draft: |
32' 9" (max) |
Shafts: |
4 |
Displacement: |
25,820 std. / 30,380 full |
SHP: |
29,000 |
Speed: |
21 knots |
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Crew: |
1,000+ |
Range: |
4,840 NM @ 19 knots / 7,780 NM @ 10 knots |
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Armament |
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Number Carried
|
Type
|
Arrangement |
Maximum Range / Ceiling |
10 |
13.5"/45 (343mm) |
5 twin turrets |
23,820 yards @ 20° (13.5 miles) with a 567 lb. armor piercing shell |
12 |
6"/45 (152mm) Mk VII |
single mounts |
15,800 yards @ 20° (8.9 miles) with a 100 lb. HE shell |
2 |
3"/45 (76mm) QF |
single mounts |
12,950 yards @ 40° (7.3 miles) AA ceiling 15,700' with a 17.5 lb. HE shell |
4 |
21" (533mm) torpedo tubes |
all submerged broadside |
4,500 yards @ 45 knots (2.5 miles) 10,750 yards @ 31 knots (6.1 miles) 515 lb. TNT warhead |
Armament notes: |
The original design placed two of the 6" guns in casemates at the stern however, it was
found that the guns were ineffective in that position and that the open casemates allowed flooding to occur. These guns were reinstalled on the forecastle deck. |
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Iron Duke was disarmed due to the London Naval Treaty in 1931-32 and used as a gunnery training ship. In addition to loosing both B and Y turrets the torpedo tubes were removed and two 4" AA guns were mounted aft in single mounts. Another AA gun was mounted in place of B turret (unknown type). In 1939 a twin 4.5" turret was mounted just aft of X turret. |
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Name |
Builder |
Launched |
Commissioned |
|
Portsmouth Dockyard Portsmouth, England |
Oct. 12, 1912 |
Mar. 10, 1914 |
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Fate |
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|
Sold Mar. 1946 and scrapped in Glasgow, Scotland.
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Name |
Builder |
Launched |
Commissioned |
|
Devonport Dockyard Plymouth, England |
Oct. 24, 1912 |
June 2, 1914 |
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Fate |
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|
Sold May 1931 and scrapped.
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Name |
Builder |
Launched |
Commissioned |
|
|
William Beardmore & Co. Ltd. Dalmuir, Scotland |
Nov. 12, 1913 |
Oct. 7, 1914 |
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Fate |
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|
Sold Jan. 1931 and scrapped.
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Name |
Builder |
Launched |
Commissioned |
|
Emperor of India (ex-Delhi)* |
Vickers Ltd. Barrow-in-Furness, England |
Nov. 27, 1913 |
Oct. 12, 1914 |
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Fate |
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|
Sold Dec. 1931 and scrapped.
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Class Notes: |
*Laid down as Delhi but renamed in 1913. |
Boilers notes: |
Iron Duke & Benbow by Babcock & Wilcox, Marlborough & Emperor of India by Yarrow. |
Est. cost each: |
£1,891,600 |
Page revised Mar. 10, 2007 |