Mindanao, Philippine Battlecruiser laid down 1935
Displacement: 25,654 t light; 26,791 t standard; 28,589 t normal; 30,027 t full load
Dimensions: Length overall / water x beam x draught
745.90 ft / 721.78 ft x 86.94 ft x 29.53 ft (normal load) [227.35 m / 220.00 m x 26.50 m x 9.00 m]
Armament:
9 - 11.02" / 280 mm guns (3x3 guns), 669.80lbs / 303.81kg shells, 1935 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring
16 - 4.53" / 115 mm guns (8x2 guns), 46.40lbs / 21.05kg shells, 1935 Model Dual purpose guns in deck mounts with hoists on side, evenly spread
4 - 1.38" / 35.0 mm guns in single mounts, 1.31lbs / 0.59kg shells, 1935 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread, all raised mounts - superfiring
32 - 1.38" / 35.0 mm guns (16x2 guns), 1.31lbs / 0.59kg shells, 1935 Model Anti-aircraft guns in deck mounts on side, evenly spread, 8 raised mounts
Weight of broadside 6,818 lbs / 3,092 kg
Shells per gun, main battery: 145
Armour:
Belts: Width (max) Length (avg) Height (avg)
Main: 11.8" / 300 mm 476.38 ft / 145.20 m 11.19 ft / 3.41 m
Ends: Unarmoured
Main Belt covers 102 % of normal length
Torpedo Bulkhead:
1.97" / 50 mm 476.38 ft / 145.20 m 26.90 ft / 8.20 m
Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 11.8" / 300 mm 5.91" / 150 mm 11.8" / 300 mm
2nd: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
3rd: 0.79" / 20 mm 0.39" / 10 mm -
4th: 0.79" / 20 mm 0.39" / 10 mm -
Armour deck: 4.13" / 105 mm, Conning tower: 11.81" / 300 mm
Machinery:
Oil fired boilers, steam turbines, Geared drive, 4 shafts, 165,229 shp / 123,261 Kw = 33.75 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 3,236 tons
Complement: 1,099 - 1,429
Cost: £11.561 million / $46.244 million
Distribution of weights at normal displacement:
Armament: 852 tons, 3.0 %
Armour: 9,212 tons, 32.2 %
- Belts: 2,663 tons, 9.3 %
- Torpedo bulkhead: 933 tons, 3.3 %
- Armament: 1,923 tons, 6.7 %
- Armour Deck: 3,454 tons, 12.1 %
- Conning Tower: 238 tons, 0.8 %
Machinery: 4,694 tons, 16.4 %
Hull, fittings & equipment: 10,716 tons, 37.5 %
Fuel, ammunition & stores: 2,935 tons, 10.3 %
Miscellaneous weights: 180 tons, 0.6 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship): 40,722 lbs / 18,471 Kg = 60.8 x 11.0 " / 280 mm shells or 5.6 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 4.9 ft / 1.5 m
Roll period: 16.5 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.52
Seaboat quality (Average = 1.00): 1.01
Hull form characteristics:
Hull has a flush deck and transom stern
Block coefficient: 0.540
Length to Beam Ratio: 8.30 : 1
'Natural speed' for length: 30.98 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 36.09 ft / 11.00 m
- Forecastle (20 %): 24.61 ft / 7.50 m
- Mid (50 %): 24.61 ft / 7.50 m
- Quarterdeck (15 %): 24.61 ft / 7.50 m
- Stern: 24.61 ft / 7.50 m
- Average freeboard: 25.52 ft / 7.78 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 100.8 %
- Above water (accommodation/working, high = better): 192.6 %
Waterplane Area: 45,160 Square feet or 4,196 Square metres
Displacement factor (Displacement / loading): 112 %
Structure weight / hull surface area: 158 lbs/sq ft or 770 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.51
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Breakdown of Miscellaneous Weight
Surface search radar - 40 tons
Air search radars and directors - 50 tons
Reserved for future growth - 90 tons
Cost to refit: 1,283 tons
Time to execute: 52 days