PBB1946, Peru PBB1946 laid down 1946
Displacement:
13 900 t light; 14 573 t standard; 15 295 t normal; 15 873 t full load
Dimensions: Length overall / water x beam x draught
640.07 ft / 623.36 ft x 75.46 ft x 21.89 ft (normal load)
195.09 m / 190.00 m x 23.00 m x 6.67 m
Armament:
4 - 13.78" / 350 mm guns (2x2 guns), 1 308.20lbs / 593.39kg shells, 1946 Model
Breech loading guns in turrets (on barbettes)
on centreline, evenly spread
4 - 7.99" / 203 mm guns (2x2 guns), 255.24lbs / 115.78kg shells, 1946 Model
Breech loading guns in turrets (on barbettes)
on side, all amidships
4 - 4.13" / 105 mm guns (2x2 guns), 35.32lbs / 16.02kg shells, 1946 Model
Quick firing guns in deck mounts
on side, evenly spread
16 - 1.46" / 37.0 mm guns (4x4 guns), 1.55lbs / 0.70kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
16 - 0.79" / 20.0 mm guns (4x4 guns), 0.24lbs / 0.11kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 6 424 lbs / 2 914 kg
Shells per gun, main battery: 100
8 - 21.8" / 553 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.30" / 160 mm 442.91 ft / 135.00 m 7.87 ft / 2.40 m
Ends: 1.97" / 50 mm 98.43 ft / 30.00 m 6.56 ft / 2.00 m
82.02 ft / 25.00 m Unarmoured ends
Main Belt covers 109 % of normal length
- Torpedo Bulkhead:
1.57" / 40 mm 442.91 ft / 135.00 m 19.03 ft / 5.80 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.0" / 254 mm 4.72" / 120 mm 9.06" / 230 mm
2nd: 5.98" / 152 mm 4.02" / 102 mm 5.98" / 152 mm
3rd: 0.39" / 10 mm - -
4th: 0.39" / 10 mm - -
- Armour deck: 2.36" / 60 mm, Conning tower: 10.00" / 254 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 74 270 shp / 55 406 Kw = 30.00 kts
Range 5 000nm at 15.00 kts
Bunker at max displacement = 1 300 tons
Complement:
686 - 893
Cost:
£10.074 million / $40.296 million
Distribution of weights at normal displacement:
Armament: 803 tons, 5.2 %
Armour: 4 099 tons, 26.8 %
- Belts: 964 tons, 6.3 %
- Torpedo bulkhead: 491 tons, 3.2 %
- Armament: 1 061 tons, 6.9 %
- Armour Deck: 1 451 tons, 9.5 %
- Conning Tower: 133 tons, 0.9 %
Machinery: 1 855 tons, 12.1 %
Hull, fittings & equipment: 7 053 tons, 46.1 %
Fuel, ammunition & stores: 1 395 tons, 9.1 %
Miscellaneous weights: 90 tons, 0.6 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
21 794 lbs / 9 886 Kg = 16.7 x 13.8 " / 350 mm shells or 3.5 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 4.1 ft / 1.2 m
Roll period: 15.7 seconds
Steadiness - As gun platform (Average = 50 %): 53 %
- Recoil effect (Restricted arc if above 1.00): 0.64
Seaboat quality (Average = 1.00): 1.01
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.520
Length to Beam Ratio: 8.26 : 1
'Natural speed' for length: 28.87 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 53
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.89 ft / 8.50 m
- Forecastle (20 %): 21.33 ft / 6.50 m
- Mid (50 %): 17.72 ft / 5.40 m
- Quarterdeck (20 %): 17.72 ft / 5.40 m
- Stern: 17.72 ft / 5.40 m
- Average freeboard: 19.50 ft / 5.95 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 108.5 %
- Above water (accommodation/working, high = better): 150.1 %
Waterplane Area: 33 211 Square feet or 3 085 Square metres
Displacement factor (Displacement / loading): 107 %
Structure weight / hull surface area: 150 lbs/sq ft or 733 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.36
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent