Here`s a SS report on the as planned Lexington class:
USS Lexington CC-1, USA, Battlecruiser laid down 1921
Displacement:
40 162 t light; 42 568 t standard; 44 200 t normal; 45 506 t full load
Dimensions: Length overall / water x beam x draught
874,03 ft / 850,00 ft x 105,40 ft x 31,00 ft (normal load)
266,40 m / 259,08 m x 32,13 m x 9,45 m
Armament:
8 - 16,00" / 406 mm guns (4x2 guns), 2 048,00lbs / 928,96kg shells, 1921 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
Main guns limited to end-on fire
8 - 6,00" / 152 mm guns in single mounts, 108,00lbs / 48,99kg shells, 1921 Model
Breech loading guns in casemate mounts
on side, all amidships
6 - 6,00" / 152 mm guns in single mounts, 108,00lbs / 48,99kg shells, 1921 Model
Breech loading guns in deck mounts
on side, evenly spread
6 - 3,00" / 76,2 mm guns in single mounts, 13,50lbs / 6,12kg shells, 1921 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 17 977 lbs / 8 154 kg
Shells per gun, main battery: 150
8 - 21,0" / 533,4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 7,00" / 178 mm 530,00 ft / 161,54 m 18,80 ft / 5,73 m
Ends: Unarmoured
Main Belt covers 96 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
0,78" / 20 mm 530,00 ft / 161,54 m 18,80 ft / 5,73 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 11,0" / 279 mm 6,00" / 152 mm 9,00" / 229 mm
- Armour deck: 2,25" / 57 mm, Conning tower: 12,00" / 305 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 219 221 shp / 163 539 Kw = 33,00 kts
Range 10 000nm at 10,00 kts
Bunker at max displacement = 2 938 tons
Complement:
1 523 - 1 981
Cost:
£11,073 million / $44,292 million
Distribution of weights at normal displacement:
Armament: 2 247 tons, 5,1 %
Armour: 9 366 tons, 21,2 %
- Belts: 2 994 tons, 6,8 %
- Torpedo bulkhead: 288 tons, 0,7 %
- Armament: 3 142 tons, 7,1 %
- Armour Deck: 2 620 tons, 5,9 %
- Conning Tower: 323 tons, 0,7 %
Machinery: 7 549 tons, 17,1 %
Hull, fittings & equipment: 20 900 tons, 47,3 %
Fuel, ammunition & stores: 4 038 tons, 9,1 %
Miscellaneous weights: 100 tons, 0,2 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
55 231 lbs / 25 052 Kg = 27,0 x 16,0 " / 406 mm shells or 5,4 torpedoes
Stability (Unstable if below 1.00): 1,07
Metacentric height 6,1 ft / 1,9 m
Roll period: 17,9 seconds
Steadiness - As gun platform (Average = 50 %): 62 %
- Recoil effect (Restricted arc if above 1.00): 1,01
Seaboat quality (Average = 1.00): 1,25
Hull form characteristics:
Hull has raised forecastle, rise aft of midbreak, low quarterdeck
Block coefficient: 0,557
Length to Beam Ratio: 8,06 : 1
'Natural speed' for length: 29,15 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 33,36 degrees
Stern overhang: -12,00 ft / -3,66 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 36,50 ft / 11,13 m
- Forecastle (20 %): 34,00 ft / 10,36 m (33,00 ft / 10,06 m aft of break)
- Mid (50 %): 31,00 ft / 9,45 m (33,00 ft / 10,06 m aft of break)
- Quarterdeck (15 %): 22,00 ft / 6,71 m (31,00 ft / 9,45 m before break)
- Stern: 22,00 ft / 6,71 m
- Average freeboard: 31,10 ft / 9,48 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 117,4 %
- Above water (accommodation/working, high = better): 236,4 %
Waterplane Area: 62 937 Square feet or 5 847 Square metres
Displacement factor (Displacement / loading): 104 %
Structure weight / hull surface area: 222 lbs/sq ft or 1 086 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,99
- Longitudinal: 1,58
- Overall: 1,04
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily
Compare that to my 1930 refit which almost doubles the ammount of armor:
USS Lexington CC-1, USA, Battlecruiser laid down 1930
Displacement:
45 809 t light; 48 320 t standard; 49 942 t normal; 51 240 t full load
Dimensions: Length overall / water x beam x draught
874,03 ft / 850,00 ft x 105,40 ft (Bulges 114,83 ft) x 32,15 ft (normal load)
266,40 m / 259,08 m x 32,13 m (Bulges 35,00 m) x 9,80 m
Armament:
8 - 16,00" / 406 mm guns (4x2 guns), 2 048,00lbs / 928,96kg shells, 1930 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 6,00" / 152 mm guns in single mounts, 108,00lbs / 48,99kg shells, 1930 Model
Breech loading guns in casemate mounts
on side, all amidships
10 - 5,00" / 127 mm guns in single mounts, 62,50lbs / 28,35kg shells, 1930 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 17 873 lbs / 8 107 kg
Shells per gun, main battery: 150
8 - 21,0" / 533,4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12,0" / 305 mm 530,00 ft / 161,54 m 18,80 ft / 5,73 m
Ends: Unarmoured
Main Belt covers 96 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead and Bulges:
2,00" / 51 mm 530,00 ft / 161,54 m 18,80 ft / 5,73 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 11,0" / 279 mm 6,00" / 152 mm 9,00" / 229 mm
- Armour deck: 5,00" / 127 mm, Conning tower: 12,00" / 305 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 239 450 shp / 178 630 Kw = 33,00 kts
Range 10 000nm at 10,00 kts
Bunker at max displacement = 2 920 tons
Complement:
1 669 - 2 171
Cost:
£18,801 million / $75,203 million
Distribution of weights at normal displacement:
Armament: 2 234 tons, 4,5 %
Armour: 15 184 tons, 30,4 %
- Belts: 5 132 tons, 10,3 %
- Torpedo bulkhead: 737 tons, 1,5 %
- Armament: 3 142 tons, 6,3 %
- Armour Deck: 5 822 tons, 11,7 %
- Conning Tower: 351 tons, 0,7 %
Machinery: 7 256 tons, 14,5 %
Hull, fittings & equipment: 21 036 tons, 42,1 %
Fuel, ammunition & stores: 4 133 tons, 8,3 %
Miscellaneous weights: 100 tons, 0,2 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
69 176 lbs / 31 378 Kg = 33,8 x 16,0 " / 406 mm shells or 8,5 torpedoes
Stability (Unstable if below 1.00): 1,12
Metacentric height 6,8 ft / 2,1 m
Roll period: 18,6 seconds
Steadiness - As gun platform (Average = 50 %): 61 %
- Recoil effect (Restricted arc if above 1.00): 0,70
Seaboat quality (Average = 1.00): 1,23
Hull form characteristics:
Hull has raised forecastle, rise aft of midbreak, low quarterdeck
Block coefficient: 0,557
Length to Beam Ratio: 7,40 : 1
'Natural speed' for length: 29,15 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 33,36 degrees
Stern overhang: -12,00 ft / -3,66 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 36,50 ft / 11,13 m
- Forecastle (20 %): 34,00 ft / 10,36 m (33,00 ft / 10,06 m aft of break)
- Mid (50 %): 31,00 ft / 9,45 m (33,00 ft / 10,06 m aft of break)
- Quarterdeck (15 %): 22,00 ft / 6,71 m (31,00 ft / 9,45 m before break)
- Stern: 22,00 ft / 6,71 m
- Average freeboard: 31,10 ft / 9,48 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 101,7 %
- Above water (accommodation/working, high = better): 215,7 %
Waterplane Area: 62 936 Square feet or 5 847 Square metres
Displacement factor (Displacement / loading): 105 %
Structure weight / hull surface area: 218 lbs/sq ft or 1 062 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,96
- Longitudinal: 1,56
- Overall: 1,01
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily
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