WesWorld

Repository for data pertaining to the subject

(Historical data)

The lack of true escorts for the capital ships of the Filipino Navy was the main reasoning for the decision to make these ships a priority of the fleet. Two were proposed to be built immediately in Japan with two more in the plans for the year after.

Displacement: 5,516 t light; 5,870 t standard; 6,889 t normal; 7,704 t full load

Dimensions: Length overall / water x beam x draught

562.83 ft / 556.00 ft x 56.00 ft x 17.00 ft (normal load) [171.55 m / 169.47 m x 17.07 m x 5.18 m]

Armament:

12 - 4.53" / 115 mm guns (6x2 guns), 46.40lbs / 21.05kg shells, 1935 Model Dual purpose guns in deck mounts with hoists on centreline ends, evenly spread, 4 raised mounts - superfiring
16 - 2.95" / 75.0 mm guns (8x2 guns), 12.87lbs / 5.84kg shells, 1935 Model Dual purpose guns in deck mounts with hoists on side ends, evenly spread, 4 raised mounts - superfiring
12 - 1.38" / 35.0 mm guns (6x2 guns), 1.31lbs / 0.59kg shells, 1935 Model Anti-aircraft guns in deck mounts on side, evenly spread
16 - 0.54" / 13.7 mm guns (4x4 guns), 0.08lbs / 0.04kg shells, 1935 Model Machine guns in deck mounts on side, evenly spread, 2 raised mounts
Weight of broadside 780 lbs / 354 kg
Shells per gun, main battery: 450
8 - 24.0" / 609.6 mm above water torpedoes

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 380.00 ft / 115.82 m 9.00 ft / 2.74 m
Ends: Unarmoured
Main Belt covers 105% of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.00" / 76 mm 1.00" / 25 mm 2.00" / 51 mm
2nd: 2.00" / 51 mm 1.00" / 25 mm 2.00" / 51 mm
3rd: 1.00" / 25 mm 1.00" / 25 mm -
4th: 1.00" / 25 mm 1.00" / 25 mm -

Armour deck: 1.40" / 36 mm, Conning tower: 2.75" / 70 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 3 shafts, 58,346 shp / 43,526 Kw = 32.00 kts
Range 11,000nm at 15.00 kts
Bunker at max displacement = 1,834 tons

Complement: 377 - 491

Cost: £2.581 million / $10.325 million

Distribution of weights at normal displacement:

Armament: 97 tons, 1.4%
Armour: 1,096 tons, 15.9%
- Belts: 423 tons, 6.1%
- Torpedo bulkhead: 0 tons, 0.0%
- Armament: 114 tons, 1.7%
- Armour Deck: 537 tons, 7.8%
- Conning Tower: 21 tons, 0.3%
Machinery: 1,658 tons, 24.1%
Hull, fittings & equipment: 2,416 tons, 35.1%
Fuel, ammunition & stores: 1,372 tons, 19.9%
Miscellaneous weights: 250 tons, 3.6%

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 8,234 lbs / 3,735 Kg = 177.4 x 4.5 " / 115 mm shells or 1.4 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 2.8 ft / 0.9 m
Roll period: 14.0 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.26
Seaboat quality (Average = 1.00): 1.04

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.456
Length to Beam Ratio: 9.93: 1
'Natural speed' for length: 27.07 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.50 ft / 7.77 m
- Forecastle (20%): 15.70 ft / 4.79 m
- Mid (50%): 15.70 ft / 4.79 m
- Quarterdeck (15%): 15.70 ft / 4.79 m
- Stern: 14.00 ft / 4.27 m
- Average freeboard: 16.36 ft / 4.99 m
Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 95.7%
- Above water (accommodation/working, high = better): 126.4%
Waterplane Area: 20,727 Square feet or 1,926 Square metres
Displacement factor (Displacement / loading): 127%
Structure weight / hull surface area: 78 lbs/sq ft or 382 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.89
- Longitudinal: 1.00
- Overall: 0.90
Caution: Hull subject to strain in open-sea
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

Ticao – laid down 1935
Tablas – laid down 1935
Taput – laid down 1936
Tubbataha – laid down 1936
--------------
Refit - Commencing 1944

Ticao, Philippine Light Cruiser laid down 1935

Displacement: 5,523 t light; 5,875 t standard; 6,895 t normal; 7,710 t full load

Dimensions: Length overall / water x beam x draught

562.83 ft / 556.00 ft x 56.00 ft x 16.99 ft (normal load) [171.55 m / 169.47 m x 17.07 m x 5.18 m]

Armament:

12 - 4.53" / 115 mm guns (6x2 guns), 46.40lbs / 21.05kg shells, 1935 Model Dual purpose guns in deck mounts with hoists on centreline ends, evenly spread, 4 raised mounts - superfiring
16 - 2.95" / 75.0 mm guns (8x2 guns), 12.87lbs / 5.84kg shells, 1935 Model Dual purpose guns in deck mounts with hoists on side ends, evenly spread, 4 raised mounts - superfiring
12 - 1.38" / 35.0 mm guns (6x2 guns), 1.31lbs / 0.59kg shells, 1935 Model Anti-aircraft guns in deck mounts on side, evenly spread
Weight of broadside 778 lbs / 353 kg
Shells per gun, main battery: 450
8 - 24.0" / 610 mm above water torpedoes

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 2.99" / 76 mm 379.99 ft / 115.82 m 8.99 ft / 2.74 m
Ends: Unarmoured
Main Belt covers 105 % of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.99" / 76 mm 0.98" / 25 mm 2.01" / 51 mm
2nd: 2.01" / 51 mm 0.98" / 25 mm 2.01" / 51 mm
3rd: 0.98" / 25 mm 0.98" / 25 mm -

Armour deck: 1.42" / 36 mm, Conning tower: 2.76" / 70 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 3 shafts, 58,394 shp / 43,562 Kw = 32.00 kts
Range 11,000nm at 15.00 kts
Bunker at max displacement = 1,835 tons

Complement: 377 - 491

Cost: £2.583 million / $10.330 million

Distribution of weights at normal displacement:

Armament: 97 tons, 1.4 %
Armour: 1,098 tons, 15.9 %
- Belts: 421 tons, 6.1 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 111 tons, 1.6 %
- Armour Deck: 544 tons, 7.9 %
- Conning Tower: 22 tons, 0.3 %
Machinery: 1,659 tons, 24.1 %
Hull, fittings & equipment: 2,569 tons, 37.3 %
Fuel, ammunition & stores: 1,372 tons, 19.9 %
Miscellaneous weights: 100 tons, 1.5 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 9,066 lbs / 4,112 Kg = 195.4 x 4.5 " / 115 mm shells or 1.5 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 2.9 ft / 0.9 m
Roll period: 13.8 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.26
Seaboat quality (Average = 1.00): 1.04

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.456
Length to Beam Ratio: 9.93 : 1
'Natural speed' for length: 27.07 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.49 ft / 7.77 m
- Forecastle (20 %): 15.72 ft / 4.79 m
- Mid (50 %): 15.72 ft / 4.79 m
- Quarterdeck (15 %): 15.72 ft / 4.79 m
- Stern: 14.01 ft / 4.27 m
- Average freeboard: 16.37 ft / 4.99 m
Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 93.4 %
- Above water (accommodation/working, high = better): 126.5 %
Waterplane Area: 20,737 Square feet or 1,927 Square metres
Displacement factor (Displacement / loading): 130 %
Structure weight / hull surface area: 83 lbs/sq ft or 406 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.06
- Overall: 0.96
Caution: Hull subject to strain in open-sea
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

Breakdown of miscellaneous weight:

Radar and associated directors -100 tons

Level 1 Refit:

Add radar
Remove 13.7mm machineguns

Cost - 276 tons

Time to execute - 22 days

Ticao - Refit commenced 1 October 1944, Refit Completed 23 October 1944
Tablas - Refit commenced 1 January 1945, Refit Completed 23 January 1945
Tapit - Refit commenced 1 April 1945, Refit Completed 23 April 1945
Tubataha - Refit commenced 1 April 1945, Refit Completed 23 April 1945

(Historical data)

(Sim by Vukovlad)

The Japanese designed CLAA were considered too expensive to be constructed to support secondary mission ships so a local shorter ranged ship was designed. These ships main task was to be assigned to coastal defense and escort units. First units were laid down during the second part of 1937.

Poro Class CLAA laid down 1937

Displacement: 4,156 t light; 4,377 t standard; 4,862 t normal; 5,249 t full load

Dimensions: Length overall / water x beam x draught

446.19 ft / 446.19 ft x 44.95 ft x 19.69 ft (normal load) [136.00 m / 136.00 m x 13.70 m x 6.00 m]

Armament:
12 – 4.53" / 115 mm guns (6x2 guns), 48,50lbs / 22,00kg shells, 1937 Model Dual purpose guns in deck mounts with hoists on centreline ends, evenly spread, 3 raised mounts - superfiring
24 – 1.38" / 35.0 mm guns (6x4 guns), 1,31lbs / 0,59kg shells, 1937 Model Anti-aircraft guns in deck mounts on side, all amidships, all raised mounts - superfiring
Weight of broadside 613 lbs / 278 kg
Shells per gun, main battery: 350
6 – 24.0" / 609.6 mm above water torpedoes

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 2.76" / 70 mm 354, 33 ft / 108.00 m 7.97 ft / 2.43 m
Ends: Unarmoured
Main Belt covers 122 % of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.36" / 60 mm 2.36" / 60 mm -
2nd: 0.79" / 20 mm - -

Armour deck: 0.79" / 20 mm, Conning tower: 3.15" / 80 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 2 shafts, 57 097 shp / 42 594 Kw = 33.00 kts
Range 6,500nm at 15.00 kts
Bunker at max displacement = 872 tons

Complement: 290 - 378

Cost: £2,339 million / $9,355 million

Distribution of weights at normal displacement:

Armament: 74 tons, 1.5 %
Armour: 613 tons, 12.6 %
- Belts: 313 tons, 6.4 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 90 tons, 1.8 %
- Armour Deck: 191 tons, 3.9 %
- Conning Tower: 19 tons, 0.4 %
Machinery: 1 583 tons, 32.6 %
Hull, fittings & equipment: 1 807 tons, 37.2 %
Fuel, ammunition & stores: 706 tons, 14.5 %
Miscellaneous weights: 80 tons, 1.6 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 3 692 lbs / 1 675 Kg = 79.6 x 4.5 " / 115 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 1.7 ft / 0.5 m
Roll period: 14.4 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.56
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:

Hull has rise forward of midbreak and transom stern
Block coefficient: 0,431
Length to Beam Ratio: 9.93: 1
'Natural speed' for length: 24.33 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 59
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.53 ft / 9.00 m
- Forecastle (20 %): 22.97 ft / 7.00 m
- Mid (50 %): 22.97 ft / 7.00 m (13.88 ft / 4.23 m aft of break)
- Quarterdeck (15 %): 13.88 ft / 4.23 m
- Stern: 13.88 ft / 4.23 m
- Average freeboard: 18.95 ft / 5.78 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 120.8 %
- Above water (accommodation/working, high = better): 113.5 %
Waterplane Area: 13 087 Square feet or 1 216 Square metres
Displacement factor (Displacement / loading): 109 %
Structure weight / hull surface area: 70 lbs/sq ft or 340 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.79
- Longitudinal: 2.74
- Overall: 0.90
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily


Poro, laid down 1937
Cobrador, laid down 1937
------

Refit Commencing 1944

Poro, Philippine Light Cruiser laid down 1937

Displacement: 4,161 t light; 4,377 t standard; 4,862 t normal; 5,249 t full load

Dimensions: Length overall / water x beam x draught

446.19 ft / 446.19 ft x 44.95 ft x 19.69 ft (normal load) [136.00 m / 136.00 m x 13.70 m x 6.00 m]

Armament:

12 - 4.53" / 115 mm guns (6x2 guns), 46.40lbs / 21.05kg shells, 1937 Model Dual purpose guns in deck mounts with hoists on centreline ends, evenly spread, 3 raised mounts - superfiring
24 - 1.38" / 35.0 mm guns (6x4 guns), 1.31lbs / 0.59kg shells, 1937 Model Anti-aircraft guns in deck mounts on side, all amidships, all raised mounts - superfiring
Weight of broadside 588 lbs / 267 kg
Shells per gun, main battery: 350
6 - 24.0" / 610 mm above water torpedoes

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 2.76" / 70 mm 354.33 ft / 108.00 m 7.97 ft / 2.43 m
Ends: Unarmoured
Main Belt covers 122 % of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.36" / 60 mm 2.36" / 60 mm -
2nd: 0.79" / 20 mm - -

Armour deck: 0.79" / 20 mm, Conning tower: 3.15" / 80 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 2 shafts, 57,097 shp / 42,594 Kw = 33.00 kts
Range 6,500nm at 15.00 kts
Bunker at max displacement = 872 tons

Complement: 290 - 378

Cost: £2.340 million / $9.359 million

Distribution of weights at normal displacement:

Armament: 74 tons, 1.5 %
Armour: 613 tons, 12.6 %
- Belts: 313 tons, 6.4 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 90 tons, 1.8 %
- Armour Deck: 191 tons, 3.9 %
- Conning Tower: 19 tons, 0.4 %
Machinery: 1,583 tons, 32.6 %
Hull, fittings & equipment: 1,812 tons, 37.3 %
Fuel, ammunition & stores: 701 tons, 14.4 %
Miscellaneous weights: 80 tons, 1.6 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 3,721 lbs / 1,688 Kg = 80.2 x 4.5 " / 115 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 1.7 ft / 0.5 m
Roll period: 14.4 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.54
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:

Hull has rise forward of midbreak and transom stern
Block coefficient: 0.431
Length to Beam Ratio: 9.93 : 1
'Natural speed' for length: 24.33 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 59
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.53 ft / 9.00 m
- Forecastle (20 %): 22.97 ft / 7.00 m
- Mid (50 %): 22.97 ft / 7.00 m (13.88 ft / 4.23 m aft of break)
- Quarterdeck (15 %): 13.88 ft / 4.23 m
- Stern: 13.88 ft / 4.23 m
- Average freeboard: 18.95 ft / 5.78 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 120.7 %
- Above water (accommodation/working, high = better): 113.5 %
Waterplane Area: 13,087 Square feet or 1,216 Square metres
Displacement factor (Displacement / loading): 109 %
Structure weight / hull surface area: 70 lbs/sq ft or 341 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.80
- Longitudinal: 2.75
- Overall: 0.90
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Breakdown of Miscellaneous Weight:

Radar - 50 tons - added during Refit
Reserved for future growth - 30 tons

Level 1 Refit: 5%

Radar added.

Refit cost: 208 tons
Refit time: 20 days

Poro - Refit Commenced 1 October 1944; Refit Complete 21 October 1944
Cobrador - Refit Commenced 1 January 1945; Refit Complete 21 January 1945

Surigao class, Philippines Light Cruiser laid down 1941

Displacement: 7,300 t light; 7,637 t standard; 8,493 t normal; 9,178 t full load

Dimensions: Length overall / water x beam x draught

570.88 ft / 557.74 ft x 53.31 ft x 19.69 ft (normal load) [174.00 m / 170.00 m x 16.25 m x 6.00 m]

Armament:

8 - 5.91" / 150 mm guns (4x2 guns), 106.92lbs / 48.50kg shells, 1941 Model Breech loading guns in turrets (on barbettes) on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 48.50lbs / 22.00kg shells, 1941 Model Dual purpose guns in deck mounts with hoists on side, evenly spread
16 - 1.38" / 35.0 mm guns (4x4 guns), 1.31lbs / 0.59kg shells, 1941 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 1,264 lbs / 573 kg
Shells per gun, main battery: 220
6 - 24.0" / 610 mm above water torpedoes

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 2.76" / 70 mm 360.89 ft / 110.00 m 8.20 ft / 2.50 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.15" / 80 mm 1.57" / 40 mm 1.57" / 40 mm
2nd: 0.98" / 25 mm 0.98" / 25 mm 0.98" / 25 mm
3rd: 0.59" / 15 mm 0.39" / 10 mm -

Armour deck: 1.97" / 50 mm, Conning tower: 2.76" / 70 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 2 shafts, 76,716 shp / 57,230 Kw = 33.00 kts
Range 8,500nm at 15.00 kts
Bunker at max displacement = 1,542 tons

Complement: 442 - 575

Cost: £4.123 million / $16.493 million

Distribution of weights at normal displacement:

Armament: 152 tons, 1.8 %
Armour: 1,306 tons, 15.4 %
- Belts: 338 tons, 4.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 187 tons, 2.2 %
- Armour Deck: 756 tons, 8.9 %
- Conning Tower: 25 tons, 0.3 %
Machinery: 2,027 tons, 23.9 %
Hull, fittings & equipment: 3,615 tons, 42.6 %
Fuel, ammunition & stores: 1,193 tons, 14.0 %
Miscellaneous weights: 200 tons, 2.4 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 12,615 lbs / 5,722 Kg = 122.5 x 5.9 " / 150 mm shells or 1.5 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 2.6 ft / 0.8 m
Roll period: 13.9 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0.59
Seaboat quality (Average = 1.00): 1.39

Hull form characteristics:

Hull has raised forecastle, low quarterdeck and transom stern
Block coefficient: 0.508
Length to Beam Ratio: 10.46: 1
'Natural speed' for length: 26.83 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 40
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.07 ft / 8.25 m
- Forecastle (20 %): 24.61 ft / 7.50 m (23.79 ft / 7.25 m aft of break)
- Mid (50 %): 22.97 ft / 7.00 m
- Quarterdeck (15 %): 14.76 ft / 4.50 m (22.97 ft / 7.00 m before break)
- Stern: 14.76 ft / 4.50 m
- Average freeboard: 22.38 ft / 6.82 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 95.1 %
- Above water (accommodation/working, high = better): 169.4 %
Waterplane Area: 20,754 Square feet or 1,928 Square metres
Displacement factor (Displacement / loading): 125 %
Structure weight / hull surface area: 94 lbs/sq ft or 460 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.91
- Longitudinal: 2.44
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

Breakdown of miscellaneous weight

Reserved for radar and electronics suite: 100 tons
Tropicalization: 100 tons


Surigao – Laid down 1 January 1941; Launched 16 July 1941; Completed 5 May 1942
Sarangani – Laid down 1 January 1941; Launched 16 July 1941; Completed 5 May 1942
Masbate - Laid down 1 January 1942; Launched 16 July 1942; Completed 5 May 1943
Misamis - Laid down 1 January 1942; Launched 16 July 1942; Completed 5 May 1943
Biliran - Laid down 1 January 1943; Launched 16 July 1943; Completed 4 May 1944
Bulican - Laid diwn 1 July 1943; Launched 13 January 1944; Completed 1 November 1944

Dumarao, Philippine Light Cruiser laid down 1944

Displacement: 7,433 t light; 7,800 t standard; 8,576 t normal; 9,197 t full load

Dimensions: Length overall / water x beam x draught

570.57 ft / 557.74 ft x 57.41 ft x 17.55 ft (normal load) [173.91 m / 170.00 m x 17.50 m x 5.35 m]

Armament:

9 - 5.91" / 150 mm guns (3x3 guns), 102.98lbs / 46.71kg shells, 1944 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 46.40lbs / 21.05kg shells, 1944 Model Dual purpose guns in deck mounts with hoists on side, evenly spread
12 - 1.38" / 35.0 mm guns (6x2 guns), 1.31lbs / 0.59kg shells, 1944 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 1,314 lbs / 596 kg
Shells per gun, main battery: 250
8 - 24.0" / 610 mm above water torpedoes

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 360.89 ft / 110.00 m 9.02 ft / 2.75 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.15" / 80 mm 2.36" / 60 mm 3.94" / 100 mm
2nd: 0.98" / 25 mm 0.59" / 15 mm 0.98" / 25 mm
3rd: 0.39" / 10 mm - -

Armour deck: 1.57" / 40 mm, Conning tower: 3.15" / 80 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 2 shafts, 78,784 shp / 58,773 Kw = 33.00 kts
Range 7,800nm at 15.00 kts
Bunker at max displacement = 1,397 tons

Complement: 445 - 579

Cost: £4.573 million / $18.291 million

Distribution of weights at normal displacement:

Armament: 164 tons, 1.9 %
Armour: 1,407 tons, 16.4 %
- Belts: 429 tons, 5.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 283 tons, 3.3 %
- Armour Deck: 668 tons, 7.8 %
- Conning Tower: 28 tons, 0.3 %
Machinery: 2,012 tons, 23.5 %
Hull, fittings & equipment: 3,599 tons, 42.0 %
Fuel, ammunition & stores: 1,143 tons, 13.3 %
Miscellaneous weights: 250 tons, 2.9 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 11,976 lbs / 5,432 Kg = 116.3 x 5.9 " / 150 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 2.6 ft / 0.8 m
Roll period: 14.9 seconds
Steadiness - As gun platform (Average = 50 %): 63 %
- Recoil effect (Restricted arc if above 1.00): 0.47
Seaboat quality (Average = 1.00): 1.13

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.534
Length to Beam Ratio: 9.71 : 1
'Natural speed' for length: 26.91 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 56
Bow angle (Positive = bow angles forward): 22.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.62 ft / 7.20 m
- Forecastle (49 %): 21.98 ft / 6.70 m
- Mid (50 %): 20.34 ft / 6.20 m
- Quarterdeck (15 %): 20.34 ft / 6.20 m
- Stern: 20.34 ft / 6.20 m
- Average freeboard: 21.47 ft / 6.55 m
Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 95.6 %
- Above water (accommodation/working, high = better): 154.8 %
Waterplane Area: 22,913 Square feet or 2,129 Square metres
Displacement factor (Displacement / loading): 123 %
Structure weight / hull surface area: 97 lbs/sq ft or 471 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.78
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Breakdown of Miscellaneous Weight

Reserved for radar and electronics suite - 100 tons
Reserved for tropicalization - 100 tons
Reserved for future growth - 50 tons

Dumarao - Laid down 1 October 1944; Launched 16 April 1945; Completed 5 February 1946
Dagupan - Laid down 1 January 1945; Launched 17 July 1945; Completed 8 May 1946
Panay - Laid down 1 April 1945; Launched 15 October 1945; Completed 8 August 1946
Palawan - Laid down 1 July 1945; Launched 16 January 1946; Completed 5 November 1946

Benguet, Philippine Light Cruiser laid down 1948

Displacement: 7,338 t light; 7,706 t standard; 8,565 t normal; 9,253 t full load

Dimensions: Length overall / water x beam x draught

570.57 ft / 557.74 ft x 57.41 ft x 17.55 ft (normal load) [173.91 m / 170.00 m x 17.50 m x 5.35 m]

Armament:

9 - 5.91" / 150 mm guns (3x3 guns), 102.98lbs / 46.71kg shells, 1948 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 46.40lbs / 21.05kg shells, 1948 Model Dual purpose guns in deck mounts with hoists on side, evenly spread
16 - 1.38" / 35.0 mm guns (8x2 guns), 1.31lbs / 0.59kg shells, 1948 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 1,319 lbs / 598 kg
Shells per gun, main battery: 250
8 - 24.0" / 610 mm above water torpedoes

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 360.89 ft / 110.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.15" / 80 mm 2.36" / 60 mm 3.15" / 80 mm
2nd: 0.98" / 25 mm 0.59" / 15 mm 0.98" / 25 mm
3rd: 0.39" / 10 mm - -

Armour deck: 1.57" / 40 mm, Conning tower: 3.15" / 80 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 2 shafts, 78,693 shp / 58,705 Kw = 33.00 kts
Range 9,000nm at 15.00 kts
Bunker at max displacement = 1,547 tons

Complement: 444 - 578

Cost: £4.954 million / $19.815 million

Distribution of weights at normal displacement:

Armament: 165 tons, 1.9 %
Armour: 1,411 tons, 16.5 %
- Belts: 468 tons, 5.5 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 248 tons, 2.9 %
- Armour Deck: 667 tons, 7.8 %
- Conning Tower: 28 tons, 0.3 %
Machinery: 1,923 tons, 22.5 %
Hull, fittings & equipment: 3,638 tons, 42.5 %
Fuel, ammunition & stores: 1,227 tons, 14.3 %
Miscellaneous weights: 200 tons, 2.3 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 12,622 lbs / 5,725 Kg = 122.6 x 5.9 " / 150 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 2.6 ft / 0.8 m
Roll period: 14.9 seconds
Steadiness - As gun platform (Average = 50 %): 66 %
- Recoil effect (Restricted arc if above 1.00): 0.49
Seaboat quality (Average = 1.00): 1.16

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.533
Length to Beam Ratio: 9.71: 1
'Natural speed' for length: 26.91 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 57
Bow angle (Positive = bow angles forward): 22.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.62 ft / 7.20 m
- Forecastle (49 %): 21.98 ft / 6.70 m
- Mid (50 %): 20.67 ft / 6.30 m
- Quarterdeck (15 %): 20.67 ft / 6.30 m
- Stern: 20.67 ft / 6.30 m
- Average freeboard: 21.64 ft / 6.60 m
Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 91.8 %
- Above water (accommodation/working, high = better): 157.5 %
Waterplane Area: 22,898 Square feet or 2,127 Square metres
Displacement factor (Displacement / loading): 126 %
Structure weight / hull surface area: 97 lbs/sq ft or 474 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.86
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Breakdown of Miscellaneous Weight

Reserved for radar and electronics suite - 100 tons
Reserved for tropicalization - 100 tons


Benguet – Laid down 1 January 1948; Launched 16 July 1948; Completed 7 May 1949
Batangas - Laid down 1 April 1948; Launched 15 October 1948; Completed 6 August 1949
Tarlac - Laid down 1 July 1948; Launched 28 February 1949; Completed 20 December 1949
Sorsogon - Laid down 15 November 1948; Launched 31 May 1949