Iron Duke 1916
Emperor of India 1918
| Name | No | Builder | Laid down | Launched | Comp | Fate |
| Benbow | Beardmore, Dalmuir | 30/5/1912 | 12/11/1913 | 10/1914 | sold for BU 3/1931 | |
| Emperor of India (ex-Delhi) | Vickers, Barrow | 31/5/1912 | 27/11/1913 | 11/1914 | sunk as target 1/9/1931 | |
| Iron Duke | Portsmouth DYd | 12/1/1912 | 12/10/1912 | 3/1914 | gunnery TS 1931, depot ship 1939, sold for BU 2/3/1946 | |
| Marlborough | Devonport DYd | 25/1/1912 | 24/10/1912 | 6/1914 | sold for BU 27/6/1932 |
|
Displacement normal, t |
25000 |
|
Displacement full, t |
30380 |
|
Length, m |
189.8 |
|
Breadth, m |
27.4 |
|
Draught, m |
9.00 |
|
No of shafts |
4 |
|
Machinery |
Iron Duke, Benbow: Parsons steam turbines, 18 Babcock & Wilcox boilers Marlborough, Emperor of India: Parsons steam turbines, 18 Yarrow boilers |
|
Power, h. p. |
29000 |
|
Max speed, kts |
21.25 |
|
Fuel, t |
coal 3250 + oil 1050 |
|
Armour, mm |
belt: 305 - 102, bulkheads: 203 - 38, turrets: 280 (face) - 203 (sides and rear) - 102 - 76 (roof), barbettes: 254 - 178 (over main deck) - 178 - 76 (under main deck), deck: 64 - 25, CT: 305 (face and sides) - 76 (roof) |
|
Armament |
5 x 2 - 343/45 Mk V, 12 x 1 - 152/45 BL Mk VII, 2 x 1 - 76/45 QF HA Mk I, 4 x 1 - 47/40 Hotchkiss, 4 - 533 TT (beam) |
|
Complement |
995 - 1022 |
Ship project history: Increased and improved King George V carrying 6`` secondary guns protected by casemates.
Protection: Main belt has 305mm thickness between barbettes "A" and "Y", 152-102mm belt extended fwd from barbette "A", ending in 13m from stem, and aft from barbette "Y", ending in 14m from stern, armour height was 6.25m at full length. Lower belt with some length as main belt extended between main and middle decks. Its thickness was 229mm (between barbettes "A" and "Y") - 152 - 102 - 64mm. Upper belt extended between barbettes "A" and "Y" between main and upper decks. Its thickness was 203mm. 305mm main belt closed by fore 152mm and after 254mm bulkheads. Upper belt has 203mm bulkheads. Second fore 102mm bulkhead was at the end of 102mm part main belt, its thickness between main and upper decks was 38mm. End of 64mm after part of lower belt closed by 64mm bulkhead. Upper deck between barbettes "A" and "Y" was 38mm. Main deck was 64mm between first and second fore bulkheads and first and second aft bulkheads, 25mm middle deck with 25mm slopes closed citadel. Lower deck was 102-76mm aft from barbette "Y" and 64 - 25mm fwd from barbette "A". Funnel uptakes had 38-25mm splinter protection.
Modernizations: 1916, all: adding of 51 - 25mm of deck armour around barbettes, thickening of magazine bulkheads.
1918, all: + flying-off platforms on turrets "B" & "X".
Naval service: Iron Duke was converted in 1931 to gunnery TS: armour belt removed, 2 x 2 - 343/45 ("B" & "Y" turrets) removed, part of boilers removed, maximal speed decreased to 18 kts
Emperor of India 1914
Iron Duke 1921
© Ivan Gogin, 2008-09