WesWorld

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(Historical data)

The purchase of the former battlecruiser Warzawa was agreed late in 1935, the purchase making possible to replace the old predreadnaught Fernando in the order of battle. After consideration it was decided to use the 280mm Indian round as the main gun instead to the 320mm used in the Samal class, with more barrels of the smaller caliber giving a larger rate of fire. Here is the version after changes made to original design.

Thanks to Hrolf for the SIM

Mindanao, Filipino Battlecruiser laid down 1935

Displacement: 25,653 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 / 303.82kg shells, 1936 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 (2x2 guns), 1.31lbs / 0.59kg shells, 1935 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread, all raised mounts
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
32 - 0.59" / 15.0 mm guns (8x4 guns), 0.10lbs / 0.05kg shells, 1935 Model Machine guns in deck mounts on side, evenly spread, 4 raised mounts
Weight of broadside 6,821 lbs / 3,094 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 -
5th: 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, 165,227 shp / 123,259 Kw = 33.75 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 3,236 tons

Complement: 1,099 - 1,429

Cost: £11.563 million / $46.250 million

Distribution of weights at normal displacement:

Armament: 853 tons, 3.0 %
Armour: 9,212 tons, 32.2 %
- Belts: 2,663 tons, 9.3 %
- Torpedo bulkhead: 933 tons, 3.3 %
- Armament: 1,924 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: 10,714 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): 40,714 lbs / 18,468 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): 1.00

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: 25.50 ft / 7.77 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 4,195 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: 1.50
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

180 tons reserved for aircraft and growth.

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Refit Scheme

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

Mindanao - Refit Commenced 30 November 1944; Refit Completed 21 January 1945