USS Ranger, United States Aircraft Carrier laid down 1920 (Engine 1941)
Displacement:
29,886 t light; 30,730 t standard; 33,201 t normal; 35,177 t full load
Dimensions: Length overall / water x beam x draught
869.61 ft / 850.00 ft x 102.00 ft (Bulges 110.00 ft) x 26.00 ft (normal load)
265.06 m / 259.08 m x 31.09 m (Bulges 33.53 m) x 7.92 m
Armament:
8 - 5.00" / 127 mm guns (4x2 guns), 55.12lbs / 25.00kg shells, 1941 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships, all raised mounts - superfiring
8 - 5.00" / 127 mm guns in single mounts, 55.12lbs / 25.00kg shells, 1941 Model
Dual purpose guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
76 - 1.10" / 27.9 mm guns (19x4 guns), 0.67lbs / 0.30kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
90 - 0.50" / 12.7 mm guns (45x2 guns), 0.06lbs / 0.03kg shells, 1941 Model
Machine guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 938 lbs / 426 kg
Shells per gun, main battery: 300
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.00" / 102 mm 563.00 ft / 171.60 m 12.12 ft / 3.69 m
Ends: Unarmoured
Main Belt covers 102 % of normal length
- Torpedo Bulkhead and Bulges:
2.50" / 64 mm 563.00 ft / 171.60 m 19.70 ft / 6.00 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 1.00" / 25 mm 2.00" / 51 mm
- Armour deck: 3.00" / 76 mm, Conning tower: 3.00" / 76 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 159,251 shp / 118,801 Kw = 32.00 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 4,446 tons
Complement:
1,229 - 1,598
Cost:
£4.127 million / $16.509 million
Distribution of weights at normal displacement:
Armament: 132 tons, 0.4 %
Armour: 5,425 tons, 16.3 %
- Belts: 1,149 tons, 3.5 %
- Torpedo bulkhead: 1,026 tons, 3.1 %
- Armament: 39 tons, 0.1 %
- Armour Deck: 3,143 tons, 9.5 %
- Conning Tower: 67 tons, 0.2 %
Machinery: 4,209 tons, 12.7 %
Hull, fittings & equipment: 12,020 tons, 36.2 %
Fuel, ammunition & stores: 3,315 tons, 10.0 %
Miscellaneous weights: 8,100 tons, 24.4 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
49,441 lbs / 22,426 Kg = 791.1 x 5.0 " / 127 mm shells or 8.5 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 6.9 ft / 2.1 m
Roll period: 17.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.03
Seaboat quality (Average = 1.00): 1.17
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.478
Length to Beam Ratio: 7.73 : 1
'Natural speed' for length: 29.15 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 60
Bow angle (Positive = bow angles forward): 26.00 degrees
Stern overhang: 6.00 ft / 1.83 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.90 ft / 8.50 m
- Forecastle (17 %): 27.90 ft / 8.50 m (20.00 ft / 6.10 m aft of break)
- Mid (50 %): 20.00 ft / 6.10 m
- Quarterdeck (17 %): 20.00 ft / 6.10 m
- Stern: 20.00 ft / 6.10 m
- Average freeboard: 21.31 ft / 6.49 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 89.3 %
- Above water (accommodation/working, high = better): 175.6 %
Waterplane Area: 56,638 Square feet or 5,262 Square metres
Displacement factor (Displacement / loading): 144 %
Structure weight / hull surface area: 154 lbs/sq ft or 751 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.20
- Longitudinal: 0.95
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
90 Aircraft as built
USS Ranger, United States Aircraft Carrier laid down 1920
Displacement:
26,041 t light; 26,762 t standard; 28,253 t normal; 29,446 t full load
Dimensions: Length overall / water x beam x draught
870.10 ft / 850.00 ft x 102.00 ft (Bulges 106.00 ft) x 25.00 ft (normal load)
265.21 m / 259.08 m x 31.09 m (Bulges 32.31 m) x 7.62 m
Armament:
8 - 6.00" / 152 mm guns (4x2 guns), 108.00lbs / 48.99kg shells, 1920 Model
Breech loading guns in deck mounts with hoists
on side, all amidships, all raised mounts - superfiring
12 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1920 Model
Breech loading guns in deck mounts
on side ends, evenly spread, 6 raised mounts - superfiring
6 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1920 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 1,695 lbs / 769 kg
Shells per gun, main battery: 150
6 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.00" / 102 mm 563.00 ft / 171.60 m 12.12 ft / 3.69 m
Ends: Unarmoured
Main Belt covers 102 % of normal length
- Torpedo Bulkhead and Bulges:
1.50" / 38 mm 563.00 ft / 171.60 m 19.70 ft / 6.00 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.50" / 13 mm 0.50" / 13 mm -
- Armour deck: 1.50" / 38 mm, Conning tower: 3.00" / 76 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 110,278 shp / 82,267 Kw = 30.00 kts
Range 12,000nm at 10.00 kts
Bunker at max displacement = 2,684 tons
Complement:
1,089 - 1,416
Cost:
£3.851 million / $15.404 million
Distribution of weights at normal displacement:
Armament: 212 tons, 0.7 %
Armour: 3,360 tons, 11.9 %
- Belts: 1,146 tons, 4.1 %
- Torpedo bulkhead: 616 tons, 2.2 %
- Armament: 17 tons, 0.1 %
- Armour Deck: 1,521 tons, 5.4 %
- Conning Tower: 60 tons, 0.2 %
Machinery: 3,856 tons, 13.6 %
Hull, fittings & equipment: 10,513 tons, 37.2 %
Fuel, ammunition & stores: 2,212 tons, 7.8 %
Miscellaneous weights: 8,100 tons, 28.7 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
40,598 lbs / 18,415 Kg = 375.9 x 6.0 " / 152 mm shells or 6.2 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 7.1 ft / 2.2 m
Roll period: 16.7 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.06
Seaboat quality (Average = 1.00): 1.42
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.439
Length to Beam Ratio: 8.02 : 1
'Natural speed' for length: 29.15 kts
Power going to wave formation at top speed: 44 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 26.00 degrees
Stern overhang: 6.00 ft / 1.83 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.90 ft / 8.81 m
- Forecastle (17 %): 28.90 ft / 8.81 m (21.00 ft / 6.40 m aft of break)
- Mid (50 %): 21.00 ft / 6.40 m
- Quarterdeck (17 %): 21.00 ft / 6.40 m
- Stern: 21.00 ft / 6.40 m
- Average freeboard: 22.31 ft / 6.80 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 101.8 %
- Above water (accommodation/working, high = better): 191.8 %
Waterplane Area: 54,819 Square feet or 5,093 Square metres
Displacement factor (Displacement / loading): 135 %
Structure weight / hull surface area: 140 lbs/sq ft or 683 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.09
- Longitudinal: 0.97
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
90 Aircraft as built