Lion, Great Britain Battlecruiser laid down 1912
Displacement:
24,566 t light; 25,668 t standard; 28,900 t normal; 31,485 t full load
Dimensions: Length overall / water x beam x draught
700.91 ft / 700.00 ft x 88.00 ft x 27.00 ft (normal load)
213.64 m / 213.36 m x 26.82 m x 8.23 m
Armament:
8 - 13.50" / 343 mm guns (3 mounts), 1,230.19lbs / 558.00kg shells, 1912 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
16 - 4.00" / 102 mm guns (8x2 guns), 32.00lbs / 14.51kg shells, 1912 Model
Quick firing guns in deck mounts with hoists
on side, evenly spread, all raised mounts
Weight of broadside 10,354 lbs / 4,696 kg
Shells per gun, main battery: 90
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 9.00" / 229 mm 440.00 ft / 134.11 m 16.00 ft / 4.88 m
Ends: 5.00" / 127 mm 260.00 ft / 79.25 m 12.00 ft / 3.66 m
Main Belt covers 97 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
2.00" / 51 mm 440.00 ft / 134.11 m 27.00 ft / 8.23 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.00" / 229 mm 7.00" / 178 mm 9.00" / 229 mm
2nd: 4.00" / 102 mm 3.00" / 76 mm 4.00" / 102 mm
- Armour deck: 3.00" / 76 mm, Conning tower: 9.00" / 229 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 96,584 shp / 72,051 Kw = 28.00 kts
Range 5,700nm at 18.00 kts
Bunker at max displacement = 5,817 tons
Complement:
1,107 - 1,440
Cost:
£2.486 million / $9.944 million
Distribution of weights at normal displacement:
Armament: 1,294 tons, 4.5 %
Armour: 8,769 tons, 30.3 %
- Belts: 3,304 tons, 11.4 %
- Torpedo bulkhead: 879 tons, 3.0 %
- Armament: 1,885 tons, 6.5 %
- Armour Deck: 2,520 tons, 8.7 %
- Conning Tower: 183 tons, 0.6 %
Machinery: 3,851 tons, 13.3 %
Hull, fittings & equipment: 10,651 tons, 36.9 %
Fuel, ammunition & stores: 4,334 tons, 15.0 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
37,875 lbs / 17,180 Kg = 30.8 x 13.5 " / 343 mm shells or 5.6 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 5.7 ft / 1.7 m
Roll period: 15.5 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0.55
Seaboat quality (Average = 1.00): 1.04
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.608
Length to Beam Ratio: 7.95 : 1
'Natural speed' for length: 26.46 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 50
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 %): 19.00 ft / 5.79 m
- Mid (50 %): 19.00 ft / 5.79 m
- Quarterdeck (15 %): 19.00 ft / 5.79 m
- Stern: 19.00 ft / 5.79 m
- Average freeboard: 19.56 ft / 5.96 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 99.7 %
- Above water (accommodation/working, high = better): 148.4 %
Waterplane Area: 45,398 Square feet or 4,218 Square metres
Displacement factor (Displacement / loading): 108 %
Structure weight / hull surface area: 168 lbs/sq ft or 818 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.00
- Longitudinal: 1.05
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
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Wednesday, January 17, 2007
A version of the anachronistic Lion with oil-fired boilers
As you might expect, the anachronistic version of the Lion, when given oil-fired boilers, is more capable. My choice is to mostly use the added capability to provide an 18 knot cruising speed for 5,700nm. I hesitate to give the ship a higher maximum speed, given the relatively low freeboard. This is the Springsharp report:
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