The E2 design study from 1913 is interesting, as an example of a 9.2in gun armoured cruiser with a good speed. There are no dimensions, just a displacement and weights, in the specifcation in D. K. Brown's book,
The Grand Fleet (1999). These are the specified weights:
Hull 5500 tons
Armament 1900 tons
Armour 3560 tons
Machinery 2700 tons
This is the Springsharp report:
GB/CA/1913 Design E2, Enter country Enter ship type laid down 1913
Displacement:
13,603 t light; 14,186 t standard; 17,250 t normal; 19,701 t full load
Dimensions: Length overall / water x beam x draught
550.00 ft / 550.00 ft x 78.00 ft x 25.00 ft (normal load)
167.64 m / 167.64 m x 23.77 m x 7.62 m
Armament:
4 - 9.20" / 234 mm guns (2x2 guns), 389.34lbs / 176.60kg shells, 1913 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 9.20" / 234 mm guns (2x2 guns), 389.34lbs / 176.60kg shells, 1913 Model
Breech loading guns in turrets (on barbettes)
on side, all amidships
8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1913 Model
Quick firing guns in casemate mounts
on side, evenly spread
8 guns in hull casemates - Limited use in heavy seas
Weight of broadside 3,979 lbs / 1,805 kg
Shells per gun, main battery: 100
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.00" / 152 mm 370.00 ft / 112.78 m 8.00 ft / 2.44 m
Ends: 3.00" / 76 mm 120.00 ft / 36.58 m 8.00 ft / 2.44 m
60.00 ft / 18.29 m Unarmoured ends
Upper: 4.00" / 102 mm 370.00 ft / 112.78 m 8.00 ft / 2.44 m
Main Belt covers 103 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
1.50" / 38 mm 370.00 ft / 112.78 m 25.00 ft / 7.62 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 6.00" / 152 mm 4.00" / 102 mm 6.00" / 152 mm
2nd: 6.00" / 152 mm 4.00" / 102 mm 6.00" / 152 mm
3rd: 6.00" / 152 mm 6.00" / 152 mm 6.00" / 152 mm
- Armour deck: 2.00" / 51 mm, Conning tower: 6.00" / 152 mm
Machinery:
Coal fired boilers, steam turbines,
Direct drive, 4 shafts, 76,885 shp / 57,356 Kw = 28.00 kts
Range 5,500nm at 18.00 kts
Bunker at max displacement = 5,514 tons (100% coal)
Complement:
752 - 978
Cost:
£1.481 million / $5.925 million
Distribution of weights at normal displacement:
Armament: 497 tons, 2.9 %
Armour: 3,983 tons, 23.1 %
- Belts: 1,376 tons, 8.0 %
- Torpedo bulkhead: 513 tons, 3.0 %
- Armament: 886 tons, 5.1 %
- Armour Deck: 1,121 tons, 6.5 %
- Conning Tower: 86 tons, 0.5 %
Machinery: 3,314 tons, 19.2 %
Hull, fittings & equipment: 5,809 tons, 33.7 %
Fuel, ammunition & stores: 3,647 tons, 21.1 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
24,308 lbs / 11,026 Kg = 62.4 x 9.2 " / 234 mm shells or 3.5 torpedoes
Stability (Unstable if below 1.00): 1.30
Metacentric height 5.5 ft / 1.7 m
Roll period: 14.0 seconds
Steadiness - As gun platform (Average = 50 %): 64 %
- Recoil effect (Restricted arc if above 1.00): 0.33
Seaboat quality (Average = 1.00): 1.15
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.563
Length to Beam Ratio: 7.05 : 1
'Natural speed' for length: 23.45 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 55
Bow angle (Positive = bow angles forward): -2.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.00 ft / 7.92 m
- Forecastle (20 %): 24.00 ft / 7.32 m
- Mid (67 %): 24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 16.00 ft / 4.88 m
- Average freeboard: 21.52 ft / 6.56 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 113.7 %
- Above water (accommodation/working, high = better): 167.2 %
Waterplane Area: 30,305 Square feet or 2,815 Square metres
Displacement factor (Displacement / loading): 118 %
Structure weight / hull surface area: 128 lbs/sq ft or 626 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.78
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
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