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(Historical data)

Filipino Rémora-class submarine, laid down 1929

Length, 242 ft x Beam, 21.4 ft x Depth, 12.9 ft

950 tons normal displacement (831 tons standard)

Main battery: 1 x 3.94-inch / 100mm

Secondary battery: 2 x 0.98-inch / 25mm

Weight of broadside: 32 lbs

8 TT, 21.0" (6 submerged)

Operational diving depth: 185 feet

Emergency diving depth: classified

Crush depth: classified

Maximum speed for 1435 shp = 15.00 knots

Approximate cruising radius, 6000 nm / 12 kts

Typical complement: 86-111

Estimated cost, $605,000 (£151,000)

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 4 tons = 0 pct

Machinery ........................ 44 tons = 5 pct

Hull and fittings; equipment ..... 561 tons = 59 pct

Fuel, ammunition, stores ......... 140 tons = 15 pct

Miscellaneous weights ............ 200 tons = 21 pct

-----

950 tons = 100 pct

Estimated metacentric height, 0.6 ft

Displacement summary:

Light ship: 809 tons

Standard displacement: 831 tons

Normal service: 950 tons

Full load: 1041 tons

Loading submergence 93 tons/foot

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.09

Shellfire needed to sink: 584 lbs = 19.1 x 3.9-inch shells

(Approximates weight of penetrating shell hits needed to sink ship, not counting critical hits)

Torpedoes needed to sink: 0.3

(Approximates number of 'typical' torpedo hits needed to sink ship)

Relative steadiness as gun platform, 1 percent

(50 percent is 'average')

Relative rocking effect from firing to beam, 0.00

Relative quality as a seaboat: 0.00

Hull form characteristics:

Block coefficient: 0.50

Sharpness coefficient: 0.32

Hull speed coefficient 'M' = 7.51

'Natural speed' for length = 15.5 knots

Power going to wave formation at top speed: 37 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by magazines and engineering spaces: 86 percent

Relative accommodation and working space: 1 percent

Displacement factor: 297 percent (Displacement relative to loading factors)

Relative cross-sectional hull strength: 3.87

(Structure weight per square foot of hull surface: 113 lbs)

Relative longitudinal hull strength: 1.44

(for 0.1 ft average freeboard; freeboard adjustment -9.4 ft)

Relative composite hull strength: 1.85

Rémora, laid down 1929, scrapped 1945

Manta, laid down 1929, scrapped 1945

Anguila, laid down 1929, scrapped 1945

Ballena, laid down 1929, scrapped 1945

Filipino Rémora-class submarine, laid down 1929

Length, 242 ft x Beam, 21.4 ft x Depth, 12.9 ft

950 tons normal displacement (831 tons standard)

Main battery: 1 x 3.94-inch / 100mm

Secondary battery: 2 x 0.98-inch / 25mm

Weight of broadside: 32 lbs

8 TT, 21.0" (6 submerged)

Operational diving depth: 185 feet

Emergency diving depth: classified

Crush depth: classified

Maximum speed for 1435 shp = 15.00 knots

Approximate cruising radius, 6000 nm / 12 kts

Typical complement: 86-111

Estimated cost, $605,000 (£151,000)

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 4 tons = 0 pct

Machinery ........................ 44 tons = 5 pct

Hull and fittings; equipment ..... 561 tons = 59 pct

Fuel, ammunition, stores ......... 140 tons = 15 pct

Miscellaneous weights ............ 200 tons = 21 pct

-----

950 tons = 100 pct

Estimated metacentric height, 0.6 ft

Displacement summary:

Light ship: 809 tons

Standard displacement: 831 tons

Normal service: 950 tons

Full load: 1041 tons

Loading submergence 93 tons/foot

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.09

Shellfire needed to sink: 584 lbs = 19.1 x 3.9-inch shells

(Approximates weight of penetrating shell hits needed to sink ship, not counting critical hits)

Torpedoes needed to sink: 0.3

(Approximates number of 'typical' torpedo hits needed to sink ship)

Relative steadiness as gun platform, 1 percent

(50 percent is 'average')

Relative rocking effect from firing to beam, 0.00

Relative quality as a seaboat: 0.00

Hull form characteristics:

Block coefficient: 0.50

Sharpness coefficient: 0.32

Hull speed coefficient 'M' = 7.51

'Natural speed' for length = 15.5 knots

Power going to wave formation at top speed: 37 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by magazines and engineering spaces: 86 percent

Relative accommodation and working space: 1 percent

Displacement factor: 297 percent (Displacement relative to loading factors)

Relative cross-sectional hull strength: 3.87

(Structure weight per square foot of hull surface: 113 lbs)

Relative longitudinal hull strength: 1.44

(for 0.1 ft average freeboard; freeboard adjustment -9.4 ft)

Relative composite hull strength: 1.85

Rémora, laid down 1929, scrapped 1945

Manta, laid down 1929, scrapped 1945

Anguila, laid down 1929, scrapped 1945

Ballena, laid down 1929, scrapped 1945

(Historical data)

Filipino Delfin-class submarine, laid down 1931

Length, 247 ft x Beam, 30.0 ft x Depth, 19.7 ft

2085 tons normal displacement (1558 tons standard)

Main battery: 2 x 4.53-inch / 115mm

AA battery: 2 x 1.38-inch / 35mm

Light battery: 1 x 0.54-inch / 13.7mm

Weight of broadside: 96 lbs

8 TT, 21.0" (6 forwards, 2 aft)

Operational diving depth: 240 feet

Emergency diving depth: 385 feet

Crush depth: 600 feet

Maximum speed for 5000 shp = 18.27 knots

Approximate cruising radius, 9500 nm / 15 kts

Typical complement: 154-201

Estimated cost, $1.462 million (£365,000)

Remarks:

Caution: lacks seaworthiness -- very limited seakeeping ability.

Caution: Very cramped ship with excessively poor habitability; lacks suitable working space.

Ship has quick, 'lively' roll; not a steady gun platform.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 12 tons = 1 pct

Machinery ........................ 149 tons = 7 pct

Hull and fittings; equipment ..... 897 tons = 43 pct

Fuel, ammunition, stores ......... 577 tons = 28 pct

Miscellaneous weights ............ 450 tons = 22 pct

-----

2085 tons = 100 pct

Estimated metacentric height, 0.8 ft

Displacement summary:

Light ship: 1508 tons

Standard displacement: 1558 tons

Normal service: 2085 tons

Full load: 2499 tons

Loading submergence 133 tons/foot

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.01

Shellfire needed to sink: 1104 lbs = 23.7 x 4.5-inch shells

(Approximates weight of penetrating shell hits needed to sink ship, not counting critical hits)

Torpedoes needed to sink: 0.3

(Approximates number of 'typical' torpedo hits needed to sink ship)

Relative steadiness as gun platform, 1 percent

(50 percent is 'average')

Relative rocking effect from firing to beam, 0.00

Relative quality as a seaboat: 0.00

Hull form characteristics:

Block coefficient: 0.50

Sharpness coefficient: 0.35

Hull speed coefficient 'M' = 5.91

'Natural speed' for length = 15.7 knots

Power going to wave formation at top speed: 52 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by magazines and engineering spaces: 96 percent

Relative accommodation and working space: 1 percent

Displacement factor: 247 percent (Displacement relative to loading factors)

Relative cross-sectional hull strength: 2.77

(Structure weight per square foot of hull surface: 120 lbs)

Relative longitudinal hull strength: 2.32

(for 0.1 ft average freeboard; freeboard adjustment -11.0 ft)

Relative composite hull strength: 2.43

[Machine-readable parameters: Spring Style v. 1.2.1]

247.00 x 30.00 x 19.70; 0.10 -- Dimensions

0.50 -- Block coefficient

1931 -- Year laid down

18.27 / 9500 / 15.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

450 tons -- Miscellaneous weights

++++++++++

2 x 4.53; 0 -- Main battery; turrets

:

0 -- No secondary battery

2 x 1.38 -- Tertiary (QF/AA) battery

Gun-shields

:

1 x 0.54 -- Fourth (light) battery

8 / 8 / 21.00 -- TT / submerged / size

++++++++++

0.00 -- No belt armor

0.00 / 0.00 -- Deck / CT

0.00 -- No battery armor

Delfin, laid down 1931, scrapped 1946

Sello, laid down 1931, scrapped 1946

Calamar, laid down 1932, scrapped 1946

Otaria, laid down 1932, scrapped 1946

Filipino Delfin-class submarine, laid down 1931

Length, 247 ft x Beam, 30.0 ft x Depth, 19.7 ft

2085 tons normal displacement (1558 tons standard)

Main battery: 2 x 4.53-inch / 115mm

AA battery: 2 x 1.38-inch / 35mm

Light battery: 1 x 0.54-inch / 13.7mm

Weight of broadside: 96 lbs

8 TT, 21.0" (6 forwards, 2 aft)

Operational diving depth: 240 feet

Emergency diving depth: 385 feet

Crush depth: 600 feet

Maximum speed for 5000 shp = 18.27 knots

Approximate cruising radius, 9500 nm / 15 kts

Typical complement: 154-201

Estimated cost, $1.462 million (£365,000)

Remarks:

Caution: lacks seaworthiness -- very limited seakeeping ability.

Caution: Very cramped ship with excessively poor habitability; lacks suitable working space.

Ship has quick, 'lively' roll; not a steady gun platform.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 12 tons = 1 pct

Machinery ........................ 149 tons = 7 pct

Hull and fittings; equipment ..... 897 tons = 43 pct

Fuel, ammunition, stores ......... 577 tons = 28 pct

Miscellaneous weights ............ 450 tons = 22 pct

-----

2085 tons = 100 pct

Estimated metacentric height, 0.8 ft

Displacement summary:

Light ship: 1508 tons

Standard displacement: 1558 tons

Normal service: 2085 tons

Full load: 2499 tons

Loading submergence 133 tons/foot

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.01

Shellfire needed to sink: 1104 lbs = 23.7 x 4.5-inch shells

(Approximates weight of penetrating shell hits needed to sink ship, not counting critical hits)

Torpedoes needed to sink: 0.3

(Approximates number of 'typical' torpedo hits needed to sink ship)

Relative steadiness as gun platform, 1 percent

(50 percent is 'average')

Relative rocking effect from firing to beam, 0.00

Relative quality as a seaboat: 0.00

Hull form characteristics:

Block coefficient: 0.50

Sharpness coefficient: 0.35

Hull speed coefficient 'M' = 5.91

'Natural speed' for length = 15.7 knots

Power going to wave formation at top speed: 52 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by magazines and engineering spaces: 96 percent

Relative accommodation and working space: 1 percent

Displacement factor: 247 percent (Displacement relative to loading factors)

Relative cross-sectional hull strength: 2.77

(Structure weight per square foot of hull surface: 120 lbs)

Relative longitudinal hull strength: 2.32

(for 0.1 ft average freeboard; freeboard adjustment -11.0 ft)

Relative composite hull strength: 2.43

[Machine-readable parameters: Spring Style v. 1.2.1]

247.00 x 30.00 x 19.70; 0.10 -- Dimensions

0.50 -- Block coefficient

1931 -- Year laid down

18.27 / 9500 / 15.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

450 tons -- Miscellaneous weights

++++++++++

2 x 4.53; 0 -- Main battery; turrets

:

0 -- No secondary battery

2 x 1.38 -- Tertiary (QF/AA) battery

Gun-shields

:

1 x 0.54 -- Fourth (light) battery

8 / 8 / 21.00 -- TT / submerged / size

++++++++++

0.00 -- No belt armor

0.00 / 0.00 -- Deck / CT

0.00 -- No battery armor

Delfin, laid down 1931, scrapped 1946

Sello, laid down 1931, scrapped 1946

Calamar, laid down 1932, scrapped 1946

Otaria, laid down 1932, scrapped 1946

(Historical data)

Bambú, Filipino oiler, laid down 1924

Displacement: 5,573 t light; 5,697 t standard; 6,190 t normal; 6,559 t full load

Loading submergence 704 tons/feet

Dimensions: 393.70 ft x 78.74 ft x 9.84 ft (normal load) [120.00 m x 24.00 m x 3.00 m]

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 3,000 shp / 2,238 Kw = 12.92 kts

Range 10,000nm at 10.00 kts

Complement: 31 officers and 370 men

Cost: £0.608 million / $2.433 million

Distribution of weights at normal displacement:

Armament: 0 tons, 0.0 %

Machinery: 100 tons, 1.6 %

Hull, fittings & equipment: 2,223 tons, 35.9 %

Fuel, ammunition & stores: 616 tons, 10.0 %

Miscellaneous weights: 3,250 tons, 52.5 %

Metacentric height 5.3

Remarks:

Hull space for machinery, storage & compartmentation is excellent

Room for accommodation & workspaces is excellent

Ship has slow, easy roll, a good, steady gun platform

Excellent seaboat, comfortable and able to fight her guns in the heaviest weather

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.26

Shellfire needed to sink: 16,368 lbs / 7,425 Kg = 151.6 x 6 " / 152 mm shells (Approx weight of penetrating shell hits needed to sink ship excluding critical hits)

Torpedoes needed to sink: 3.0 (Approx number of typical torpedo hits needed to sink ship)

Relative steadiness as gun platform: 77 %

(Average = 50 %)

Relative rocking effect from firing to beam: 0.00

Relative quality as seaboat: 1.54

Hull form characteristics:

Block coefficient: 0.710

Sharpness coefficient: 0.50

Hull speed coefficient 'M': 6.56

'Natural speed' for length: 19.84 kts

Power going to wave formation at top speed: 28 %

Trim: 50

(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:

Underwater volume absorbed by magazines and engineering spaces: 63.2 %

Relative accommodation and working space: 234.5 %

(Average = 100%)

Displacement factor: 179 % (Displacement relative to loading factors)

Relative cross-sectional hull strength: 0.96 (Structure weight / hull surface area: 74 lbs / square foot or 363 Kg / square metre)

Relative longitudinal hull strength: 1.46 (for 17.39 ft / 5.30 m average freeboard, freeboard adjustment 3.63 ft)

Relative composite hull strength: 1.00

Misc. weight:

3175t tankerage

50t catapult + airplane

25t climatisation

Bambú, laid down 1924 in Italy, scrapped 1946

Bambú, Filipino oiler, laid down 1924

Displacement: 5,573 t light; 5,697 t standard; 6,190 t normal; 6,559 t full load

Loading submergence 704 tons/feet

Dimensions: 393.70 ft x 78.74 ft x 9.84 ft (normal load) [120.00 m x 24.00 m x 3.00 m]

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 3,000 shp / 2,238 Kw = 12.92 kts

Range 10,000nm at 10.00 kts

Complement: 31 officers and 370 men

Cost: £0.608 million / $2.433 million

Distribution of weights at normal displacement:

Armament: 0 tons, 0.0 %

Machinery: 100 tons, 1.6 %

Hull, fittings & equipment: 2,223 tons, 35.9 %

Fuel, ammunition & stores: 616 tons, 10.0 %

Miscellaneous weights: 3,250 tons, 52.5 %

Metacentric height 5.3

Remarks:

Hull space for machinery, storage & compartmentation is excellent

Room for accommodation & workspaces is excellent

Ship has slow, easy roll, a good, steady gun platform

Excellent seaboat, comfortable and able to fight her guns in the heaviest weather

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.26

Shellfire needed to sink: 16,368 lbs / 7,425 Kg = 151.6 x 6 " / 152 mm shells (Approx weight of penetrating shell hits needed to sink ship excluding critical hits)

Torpedoes needed to sink: 3.0 (Approx number of typical torpedo hits needed to sink ship)

Relative steadiness as gun platform: 77 %

(Average = 50 %)

Relative rocking effect from firing to beam: 0.00

Relative quality as seaboat: 1.54

Hull form characteristics:

Block coefficient: 0.710

Sharpness coefficient: 0.50

Hull speed coefficient 'M': 6.56

'Natural speed' for length: 19.84 kts

Power going to wave formation at top speed: 28 %

Trim: 50

(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:

Underwater volume absorbed by magazines and engineering spaces: 63.2 %

Relative accommodation and working space: 234.5 %

(Average = 100%)

Displacement factor: 179 % (Displacement relative to loading factors)

Relative cross-sectional hull strength: 0.96 (Structure weight / hull surface area: 74 lbs / square foot or 363 Kg / square metre)

Relative longitudinal hull strength: 1.46 (for 17.39 ft / 5.30 m average freeboard, freeboard adjustment 3.63 ft)

Relative composite hull strength: 1.00

Misc. weight:

3175t tankerage

50t catapult + airplane

25t climatisation

Bambú, laid down 1924 in Italy, scrapped 1946

(Historical data)

Filipino Agulón-class submarine, laid down 1933

Displacement: 499 t light; 512 t standard; 588 t normal; 648 t full load

Dimensions: Length overall / water x beam x draught

193.57 ft / 193.57 ft x 20.34 ft x 13.12 ft (normal load) [59.00 m / 59.00 m x 6.20 m x 4.00 m]

Armament:

1 - 2.95" / 75.0 mm guns in single mounts, 13.23lbs / 6.00kg shells, 1933 Model Quick firing gun in deck mount on centreline forward

1 - 1.38" / 35.0 mm guns in single mounts, 1.32lbs / 0.60kg shells, 1933 Model Anti-aircraft gun in deck mount on centreline aft

Weight of broadside 15 lbs / 7 kg

Shells per gun, main battery: 150

6 - 24.0" / 610 mm submerged torpedo tubes (4 forward, 2 aft), 12 torpedoes

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)

Main: 0.79" / 20 mm - -

2nd: 0.79" / 20 mm - -

Machinery:

Diesel Internal combustion motors, Electric cruising motors plus geared drives, 2 shafts, 2,500 shp / 1,865 Kw = 18.46 kts

Range 8,000nm at 10.00 kts

Bunker at max displacement = 136 tons

Complement: 59 - 77

Cost: £0.138 million / $0.553 million

Distribution of weights at normal displacement:

Armament: 2 tons, 0.3 %

Armour: 1 tons, 0.2 %

- Belts: 0 tons, 0.0 %

- Torpedo bulkhead: 0 tons, 0.0 %

- Armament: 1 tons, 0.2 %

- Armour Deck: 0 tons, 0.0 %

- Conning Tower: 0 tons, 0.0 %

Machinery: 73 tons, 12.4 %

Hull, fittings & equipment: 303 tons, 51.6 %

Fuel, ammunition & stores: 89 tons, 15.1 %

Miscellaneous weights: 120 tons, 20.4 %

Misc. Weight:

12 t for six torpedo reloads

108 t for ballast tanks

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 106 lbs / 48 Kg = 8.3 x 3.0 " / 75 mm shells or 0.1 torpedoes

Stability (Unstable if below 1.00): 1.00

Metacentric height 0.5 ft / 0.1 m

Roll period: 12.6 seconds

Steadiness - As gun platform (Average = 50 %): 22 %

- Recoil effect (Restricted arc if above 1.00): 0.05

Seaboat quality (Average = 1.00): 0.88

Hull form characteristics:

Hull has a flush deck

Block coefficient: 0.400

Length to Beam Ratio: 9.52 : 1

'Natural speed' for length: 13.91 kts

Power going to wave formation at top speed: 51 %

Trim (Max stability = 0, Max steadiness = 100): 11

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: 15.29 ft / 4.66 m

- Forecastle (20 %): 9.74 ft / 2.97 m

- Mid (50 %): 9.74 ft / 2.97 m

- Quarterdeck (15 %): 9.74 ft / 2.97 m

- Stern: 9.74 ft / 2.97 m

- Average freeboard: 10.19 ft / 3.11 m

Ship tends to be wet forward

Operational Diving Depth: 53 m

Emergency Depth: 85 m

Crush Depth: 132 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 244.1 %

- Above water (accommodation/working, high = better): 76.2 %

Waterplane Area: 2,423 Square feet or 225 Square metres

Displacement factor (Displacement / loading): 210 %

Structure weight / hull surface area: 48 lbs/sq ft or 234 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 1.26

- Longitudinal: 9.48

- Overall: 1.55

Hull space for machinery, storage, compartmentation is extremely poor

Room for accommodation and workspaces is cramped

Ship has quick, lively roll, not a steady gun platform

Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

Agulón, laid down 1933 - scrapped 1946

Rascacio, laid down 1933 - scrapped 1946

Dorado, laid down 1933 - scrapped 1946

Bolete, laid down 1933 - scrapped 1946

Roncador, laid down 1933 - scrapped 1946

Picuda, laid down 1933 - scrapped 1946

Filipino Agulón-class submarine, laid down 1933

Displacement: 499 t light; 512 t standard; 588 t normal; 648 t full load

Dimensions: Length overall / water x beam x draught

193.57 ft / 193.57 ft x 20.34 ft x 13.12 ft (normal load) [59.00 m / 59.00 m x 6.20 m x 4.00 m]

Armament:

1 - 2.95" / 75.0 mm guns in single mounts, 13.23lbs / 6.00kg shells, 1933 Model Quick firing gun in deck mount on centreline forward

1 - 1.38" / 35.0 mm guns in single mounts, 1.32lbs / 0.60kg shells, 1933 Model Anti-aircraft gun in deck mount on centreline aft

Weight of broadside 15 lbs / 7 kg

Shells per gun, main battery: 150

6 - 24.0" / 610 mm submerged torpedo tubes (4 forward, 2 aft), 12 torpedoes

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)

Main: 0.79" / 20 mm - -

2nd: 0.79" / 20 mm - -

Machinery:

Diesel Internal combustion motors, Electric cruising motors plus geared drives, 2 shafts, 2,500 shp / 1,865 Kw = 18.46 kts

Range 8,000nm at 10.00 kts

Bunker at max displacement = 136 tons

Complement: 59 - 77

Cost: £0.138 million / $0.553 million

Distribution of weights at normal displacement:

Armament: 2 tons, 0.3 %

Armour: 1 tons, 0.2 %

- Belts: 0 tons, 0.0 %

- Torpedo bulkhead: 0 tons, 0.0 %

- Armament: 1 tons, 0.2 %

- Armour Deck: 0 tons, 0.0 %

- Conning Tower: 0 tons, 0.0 %

Machinery: 73 tons, 12.4 %

Hull, fittings & equipment: 303 tons, 51.6 %

Fuel, ammunition & stores: 89 tons, 15.1 %

Miscellaneous weights: 120 tons, 20.4 %

Misc. Weight:

12 t for six torpedo reloads

108 t for ballast tanks

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 106 lbs / 48 Kg = 8.3 x 3.0 " / 75 mm shells or 0.1 torpedoes

Stability (Unstable if below 1.00): 1.00

Metacentric height 0.5 ft / 0.1 m

Roll period: 12.6 seconds

Steadiness - As gun platform (Average = 50 %): 22 %

- Recoil effect (Restricted arc if above 1.00): 0.05

Seaboat quality (Average = 1.00): 0.88

Hull form characteristics:

Hull has a flush deck

Block coefficient: 0.400

Length to Beam Ratio: 9.52 : 1

'Natural speed' for length: 13.91 kts

Power going to wave formation at top speed: 51 %

Trim (Max stability = 0, Max steadiness = 100): 11

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: 15.29 ft / 4.66 m

- Forecastle (20 %): 9.74 ft / 2.97 m

- Mid (50 %): 9.74 ft / 2.97 m

- Quarterdeck (15 %): 9.74 ft / 2.97 m

- Stern: 9.74 ft / 2.97 m

- Average freeboard: 10.19 ft / 3.11 m

Ship tends to be wet forward

Operational Diving Depth: 53 m

Emergency Depth: 85 m

Crush Depth: 132 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 244.1 %

- Above water (accommodation/working, high = better): 76.2 %

Waterplane Area: 2,423 Square feet or 225 Square metres

Displacement factor (Displacement / loading): 210 %

Structure weight / hull surface area: 48 lbs/sq ft or 234 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 1.26

- Longitudinal: 9.48

- Overall: 1.55

Hull space for machinery, storage, compartmentation is extremely poor

Room for accommodation and workspaces is cramped

Ship has quick, lively roll, not a steady gun platform

Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

Agulón, laid down 1933 - scrapped 1946

Rascacio, laid down 1933 - scrapped 1946

Dorado, laid down 1933 - scrapped 1946

Bolete, laid down 1933 - scrapped 1946

Roncador, laid down 1933 - scrapped 1946

Picuda, laid down 1933 - scrapped 1946

(Historical data)

The second of the ships constructed using the turrets of the scrapped Doria. While the Presidente Bonifacio was well received as a secondary role ship useful for the insular areas of the Philippines this ship was considered to be a weak compromise when compared with other similar ships that appeared during the period like the Australian Lion and the Leopards.

Presidente Aguinaldo, Philippino Battlecruiser laid down 1938

Displacement: 24,970 t light; 26,227 t standard; 28,273 t normal; 29,910 t full load

Dimensions: Length overall / water x beam x draught

752.63 ft / 750.00 ft x 80.00 ft (Bulges 91.20 ft) x 26.50 ft (normal load) [229.40 m / 228.60 m x 24.38 m (Bulges 27.80 m) x 8.08 m]

Armament:

3 - 12.60" / 320 mm guns (1x3 guns), 999.81lbs / 453.51kg shells, 1938 Model Breech loading guns in a turret (on a barbette) on centreline forward

4 - 12.60" / 320 mm guns (2x2 guns), 999.81lbs / 453.51kg shells, 1938 Model Breech loading guns in turrets (on barbettes) on centreline, all aft, 1 raised mount - superfiring

16 - 4.53" / 115 mm guns (8x2 guns), 46.40lbs / 21.05kg shells, 1938 Model Dual purpose guns in deck mounts with hoists on side ends, evenly spread

32 - 1.38" / 35.0 mm guns (8x4 guns), 1.31lbs / 0.59kg shells, 1938 Model Anti-aircraft guns in deck mounts with hoists on side, all amidships, all raised mounts - superfiring

Weight of broadside 7,783 lbs / 3,530 kg

Shells per gun, main battery: 150

Armour:

Belts: Width (max) Length (avg) Height (avg)

Main: 11.0" / 280 mm 487.50 ft / 148.59 m 13.12 ft / 4.00 m

Ends: Unarmoured

Main Belt covers 100 % of normal length

Torpedo Bulkhead and Bulges: 1.57" / 40 mm 487.50 ft / 148.59 m 25.43 ft / 7.75 m

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)

Main: 11.0" / 280 mm 7.87" / 200 mm 9.06" / 230 mm

2nd: 11.0" / 280 mm 7.87" / 200 mm 9.06" / 230 mm

3rd: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm

Armour deck: 4.72" / 120 mm, Conning tower: 11.02" / 280 mm

Machinery:

Oil fired boilers, steam turbines,

Geared drive, 4 shafts, 132,778 shp / 99,052 Kw = 32.00 kts

Range 15,000nm at 12.00 kts

Bunker at max displacement = 3,683 tons

Complement: 1,089 - 1,417

Cost: £12.401 million / $49.604 million

Distribution of weights at normal displacement:

Armament: 973 tons, 3.4 %

Armour: 9,232 tons, 32.7 %

- Belts: 2,958 tons, 10.5 %

- Torpedo bulkhead: 722 tons, 2.6 %

- Armament: 1,535 tons, 5.4 %

- Armour Deck: 3,795 tons, 13.4 %

- Conning Tower: 220 tons, 0.8 %

Machinery: 3,636 tons, 12.9 %

Hull, fittings & equipment: 10,930 tons, 38.7 %

Fuel, ammunition & stores: 3,303 tons, 11.7 %

Miscellaneous weights: 200 tons, 0.7 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 41,681 lbs / 18,906 Kg = 41.7 x 12.6 " / 320 mm shells or 6.5 torpedoes

Stability (Unstable if below 1.00): 1.15

Metacentric height 4.7 ft / 1.4 m

Roll period: 17.7 seconds

Steadiness - As gun platform (Average = 50 %): 60 %

- Recoil effect (Restricted arc if above 1.00): 0.46

Seaboat quality (Average = 1.00): 1.07

Hull form characteristics:

Hull has a flush deck and transom stern

Block coefficient: 0.546

Length to Beam Ratio: 8.22: 1

'Natural speed' for length: 31.58 kts

Power going to wave formation at top speed: 54 %

Trim (Max stability = 0, Max steadiness = 100): 56

Bow angle (Positive = bow angles forward): 5.00 degrees

Stern overhang: 0.00 ft / 0.00 m

Freeboard (% = measuring location as a percentage of overall length):

- Stem: 30.10 ft / 9.17 m

- Forecastle (20 %): 22.00 ft / 6.71 m

- Mid (50 %): 21.00 ft / 6.40 m

- Quarterdeck (15 %): 21.00 ft / 6.40 m

- Stern: 21.00 ft / 6.40 m

- Average freeboard: 22.00 ft / 6.70 m

Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 93.3 %

- Above water (accommodation/working, high = better): 161.3 %

Waterplane Area: 43,424 Square feet or 4,034 Square metres

Displacement factor (Displacement / loading): 115 %

Structure weight / hull surface area: 166 lbs/sq ft or 810 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 0.97

- Longitudinal: 1.20

- Overall: 1.00

Hull space for machinery, storage, compartmentation is adequate

Room for accommodation and workspaces is excellent

Sold to Argentina in October 1946

The second of the ships constructed using the turrets of the scrapped Doria. While the Presidente Bonifacio was well received as a secondary role ship useful for the insular areas of the Philippines this ship was considered to be a weak compromise when compared with other similar ships that appeared during the period like the Australian Lion and the Leopards.

Presidente Aguinaldo, Philippino Battlecruiser laid down 1938

Displacement: 24,970 t light; 26,227 t standard; 28,273 t normal; 29,910 t full load

Dimensions: Length overall / water x beam x draught

752.63 ft / 750.00 ft x 80.00 ft (Bulges 91.20 ft) x 26.50 ft (normal load) [229.40 m / 228.60 m x 24.38 m (Bulges 27.80 m) x 8.08 m]

Armament:

3 - 12.60" / 320 mm guns (1x3 guns), 999.81lbs / 453.51kg shells, 1938 Model Breech loading guns in a turret (on a barbette) on centreline forward

4 - 12.60" / 320 mm guns (2x2 guns), 999.81lbs / 453.51kg shells, 1938 Model Breech loading guns in turrets (on barbettes) on centreline, all aft, 1 raised mount - superfiring

16 - 4.53" / 115 mm guns (8x2 guns), 46.40lbs / 21.05kg shells, 1938 Model Dual purpose guns in deck mounts with hoists on side ends, evenly spread

32 - 1.38" / 35.0 mm guns (8x4 guns), 1.31lbs / 0.59kg shells, 1938 Model Anti-aircraft guns in deck mounts with hoists on side, all amidships, all raised mounts - superfiring

Weight of broadside 7,783 lbs / 3,530 kg

Shells per gun, main battery: 150

Armour:

Belts: Width (max) Length (avg) Height (avg)

Main: 11.0" / 280 mm 487.50 ft / 148.59 m 13.12 ft / 4.00 m

Ends: Unarmoured

Main Belt covers 100 % of normal length

Torpedo Bulkhead and Bulges: 1.57" / 40 mm 487.50 ft / 148.59 m 25.43 ft / 7.75 m

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)

Main: 11.0" / 280 mm 7.87" / 200 mm 9.06" / 230 mm

2nd: 11.0" / 280 mm 7.87" / 200 mm 9.06" / 230 mm

3rd: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm

Armour deck: 4.72" / 120 mm, Conning tower: 11.02" / 280 mm

Machinery:

Oil fired boilers, steam turbines,

Geared drive, 4 shafts, 132,778 shp / 99,052 Kw = 32.00 kts

Range 15,000nm at 12.00 kts

Bunker at max displacement = 3,683 tons

Complement: 1,089 - 1,417

Cost: £12.401 million / $49.604 million

Distribution of weights at normal displacement:

Armament: 973 tons, 3.4 %

Armour: 9,232 tons, 32.7 %

- Belts: 2,958 tons, 10.5 %

- Torpedo bulkhead: 722 tons, 2.6 %

- Armament: 1,535 tons, 5.4 %

- Armour Deck: 3,795 tons, 13.4 %

- Conning Tower: 220 tons, 0.8 %

Machinery: 3,636 tons, 12.9 %

Hull, fittings & equipment: 10,930 tons, 38.7 %

Fuel, ammunition & stores: 3,303 tons, 11.7 %

Miscellaneous weights: 200 tons, 0.7 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 41,681 lbs / 18,906 Kg = 41.7 x 12.6 " / 320 mm shells or 6.5 torpedoes

Stability (Unstable if below 1.00): 1.15

Metacentric height 4.7 ft / 1.4 m

Roll period: 17.7 seconds

Steadiness - As gun platform (Average = 50 %): 60 %

- Recoil effect (Restricted arc if above 1.00): 0.46

Seaboat quality (Average = 1.00): 1.07

Hull form characteristics:

Hull has a flush deck and transom stern

Block coefficient: 0.546

Length to Beam Ratio: 8.22: 1

'Natural speed' for length: 31.58 kts

Power going to wave formation at top speed: 54 %

Trim (Max stability = 0, Max steadiness = 100): 56

Bow angle (Positive = bow angles forward): 5.00 degrees

Stern overhang: 0.00 ft / 0.00 m

Freeboard (% = measuring location as a percentage of overall length):

- Stem: 30.10 ft / 9.17 m

- Forecastle (20 %): 22.00 ft / 6.71 m

- Mid (50 %): 21.00 ft / 6.40 m

- Quarterdeck (15 %): 21.00 ft / 6.40 m

- Stern: 21.00 ft / 6.40 m

- Average freeboard: 22.00 ft / 6.70 m

Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 93.3 %

- Above water (accommodation/working, high = better): 161.3 %

Waterplane Area: 43,424 Square feet or 4,034 Square metres

Displacement factor (Displacement / loading): 115 %

Structure weight / hull surface area: 166 lbs/sq ft or 810 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 0.97

- Longitudinal: 1.20

- Overall: 1.00

Hull space for machinery, storage, compartmentation is adequate

Room for accommodation and workspaces is excellent

Sold to Argentina in October 1946

(Historical data)

Soccsksargen class torpedo-boat tender, laid down 1928

Length, 70.0 m x Beam, 13.0 m x Depth, 4.0 m

2202 tonnes normal displacement (1929 tonnes standard)

Main battery: 2 x 100mm (2x1)

Secondary battery: 6 x 25mm (2x3)

AA battery: 4 x 13.7mm (1x4)

Weight of broadside: 31 kg

Hull unarmored

Battery armor:

Main, 30mm shields / secondary, 15mm shields

AA, 15mm shields

Maximum speed for 2999 shaft kw = 16.68 knots

Approximate cruising radius, 8000 nm / 12 knots

Typical complement: 161-209

Estimated cost, $1.383 million (£346,000)

Remarks:

Excellent seaboat; comfortable and able to fight her guns in the heaviest weather

Magazines and engineering spaces are roomy, with superior watertight subdivision

Ship is roomy, with superior accommodation and working space

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 9 tonnes = 0 pct

Armor, total ..................... 5 tonnes = 0 pct

Armament 5 tonnes = 0 pct

Machinery ........................ 125 tonnes = 6 pct

Hull and fittings; equipment ..... 840 tonnes = 38 pct

Fuel, ammunition, stores ......... 323 tonnes = 15 pct

Miscellaneous weights ............ 900 tonnes = 41 pct

-----

2202 tonnes = 100 pct

Estimated metacentric height, 0.4 m

Displacement summary:

Light ship: 1879 tonnes

Standard displacement: 1929 tonnes

Normal service: 2202 tonnes

Full load: 2412 tonnes

Loading submergence 652 tonnes/metre

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.01

Shellfire needed to sink: 1983 kg = 142.7 x 10.0-cm shells (Approximates weight of penetrating shell hits needed to sink ship, not counting critical hits)

Torpedoes needed to sink: 1.4 (Approximates number of 'typical' torpedo hits needed to sink ship)

Relative steadiness as gun platform, 60 percent (50 percent is 'average')

Relative rocking effect from firing to beam, 0.04

Relative quality as a seaboat: 2.00

Hull form characteristics:

Block coefficient: 0.60

Sharpness coefficient: 0.45

Hull speed coefficient 'M' = 5.39

'Natural speed' for length = 15.2 knots

Power going to wave formation at top speed: 57 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by magazines and engineering spaces: 67 percent

Relative accommodation and working space: 149 percent

Displacement factor: 180 percent (Displacement relative to loading factors)

Relative cross-sectional hull strength: 1.12 (Structure weight per square metre of hull surface: 352 kg)

Relative longitudinal hull strength: 5.94 (for 5.50 m average freeboard; freeboard adjustment +2.09 m)

Relative composite hull strength: 1.33

Modified version of Indian Captain Jagan Rane-class tender.

Misc. Weight:

396 t = accommodation for 198 "tendee" crew (at 2 t per)

168 t = fuel for "tendees"

78 t = ammunition and stores for tendees

25 t = flag facilities

25 t = medical facilities

100 t = workshops

108 t = repair materials

Soccsksargen, laid down 1928, scrapped January 1947

Cordillera, laid down 1928, scrapped January 1947

Soccsksargen class torpedo-boat tender, laid down 1928

Length, 70.0 m x Beam, 13.0 m x Depth, 4.0 m

2202 tonnes normal displacement (1929 tonnes standard)

Main battery: 2 x 100mm (2x1)

Secondary battery: 6 x 25mm (2x3)

AA battery: 4 x 13.7mm (1x4)

Weight of broadside: 31 kg

Hull unarmored

Battery armor:

Main, 30mm shields / secondary, 15mm shields

AA, 15mm shields

Maximum speed for 2999 shaft kw = 16.68 knots

Approximate cruising radius, 8000 nm / 12 knots

Typical complement: 161-209

Estimated cost, $1.383 million (£346,000)

Remarks:

Excellent seaboat; comfortable and able to fight her guns in the heaviest weather

Magazines and engineering spaces are roomy, with superior watertight subdivision

Ship is roomy, with superior accommodation and working space

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 9 tonnes = 0 pct

Armor, total ..................... 5 tonnes = 0 pct

Armament 5 tonnes = 0 pct

Machinery ........................ 125 tonnes = 6 pct

Hull and fittings; equipment ..... 840 tonnes = 38 pct

Fuel, ammunition, stores ......... 323 tonnes = 15 pct

Miscellaneous weights ............ 900 tonnes = 41 pct

-----

2202 tonnes = 100 pct

Estimated metacentric height, 0.4 m

Displacement summary:

Light ship: 1879 tonnes

Standard displacement: 1929 tonnes

Normal service: 2202 tonnes

Full load: 2412 tonnes

Loading submergence 652 tonnes/metre

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.01

Shellfire needed to sink: 1983 kg = 142.7 x 10.0-cm shells (Approximates weight of penetrating shell hits needed to sink ship, not counting critical hits)

Torpedoes needed to sink: 1.4 (Approximates number of 'typical' torpedo hits needed to sink ship)

Relative steadiness as gun platform, 60 percent (50 percent is 'average')

Relative rocking effect from firing to beam, 0.04

Relative quality as a seaboat: 2.00

Hull form characteristics:

Block coefficient: 0.60

Sharpness coefficient: 0.45

Hull speed coefficient 'M' = 5.39

'Natural speed' for length = 15.2 knots

Power going to wave formation at top speed: 57 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by magazines and engineering spaces: 67 percent

Relative accommodation and working space: 149 percent

Displacement factor: 180 percent (Displacement relative to loading factors)

Relative cross-sectional hull strength: 1.12 (Structure weight per square metre of hull surface: 352 kg)

Relative longitudinal hull strength: 5.94 (for 5.50 m average freeboard; freeboard adjustment +2.09 m)

Relative composite hull strength: 1.33

Modified version of Indian Captain Jagan Rane-class tender.

Misc. Weight:

396 t = accommodation for 198 "tendee" crew (at 2 t per)

168 t = fuel for "tendees"

78 t = ammunition and stores for tendees

25 t = flag facilities

25 t = medical facilities

100 t = workshops

108 t = repair materials

Soccsksargen, laid down 1928, scrapped January 1947

Cordillera, laid down 1928, scrapped January 1947

(Historical data)

Calabarzon-class submarine tender, laid down 1931

Length, 230 ft x Beam, 42.6 ft x Depth, 13.1 ft

2202 tons normal displacement (1920 tons standard)

Main battery: 2 x 2.95-inch / 75mm (2x1)

Secondary battery: 4 x 1.38-inch / 35mm (2x2)

AA battery: 4 x 0.54-inch / 13.7mm (1x4)

Weight of broadside: 32 lbs

Hull unarmored

Battery armor:

Main, 30mm shields / secondary, 20mm shields

AA, 15mm shields

Maximum speed for 3000 shp = 15.51 knots

Approximate cruising radius, 8500 nm / 12 kts

Typical complement: 161-209

Estimated cost, $1.421 million (£355,000)

Remarks:

Excellent seaboat; comfortable and able to fight her guns in the heaviest weather

Magazines and engineering spaces are roomy, with superior watertight subdivision

Ship is roomy, with superior accommodation and working space.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 4 tons = 0 pct

Armor, total ..................... 4 tons = 0 pct

Armament 4 tons = 0 pct

Machinery ........................ 90 tons = 4 pct

Hull and fittings; equipment ..... 826 tons = 38 pct

Fuel, ammunition, stores ......... 328 tons = 15 pct

Miscellaneous weights ............ 950 tons = 43 pct

-----

2202 tons = 100 pct

Estimated metacentric height, 1.5 ft

Displacement summary:

Light ship: 1874 tons

Standard displacement: 1920 tons

Normal service: 2202 tons

Full load: 2418 tons

Loading submergence 199 tons/foot

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.03

Shellfire needed to sink: 4710 lbs = 366.9 x 3.0-inch shells (Approximates weight of penetrating shell hits needed to sink ship, not counting critical hits)

Torpedoes needed to sink: 1.5 (Approximates number of 'typical' torpedo hits needed to sink ship)

Relative steadiness as gun platform, 50 percent (50 percent is 'average')

Relative rocking effect from firing to beam, 0.02

Relative quality as a seaboat: 2.00

Hull form characteristics:

Block coefficient: 0.60

Sharpness coefficient: 0.45

Hull speed coefficient 'M' = 5.39

'Natural speed' for length = 15.2 knots

Power going to wave formation at top speed: 53 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by magazines and engineering spaces: 62 percent

Relative accommodation and working space: 149 percent

Displacement factor: 189 percent (Displacement relative to loading factors)

Relative cross-sectional hull strength: 1.13 (Structure weight per square foot of hull surface: 71 lbs)

Relative longitudinal hull strength: 5.85 (for 18.0 ft average freeboard; freeboard adjustment +6.9 ft)

Relative composite hull strength: 1.33

[Machine-readable parameters: Spring Style v. 1.2.1]

229.60 x 42.64 x 13.12; 18.04 -- Dimensions

0.60 -- Block coefficient

1931 -- Year laid down

15.51 / 8500 / 12.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

950 tons -- Miscellaneous weights

++++++++++

2 x 2.95; 0 -- Main battery; turrets

Gun-shields

:

4 x 1.38; 0 -- Secondary battery; turrets

Gun-shields

:

4 x 0.54 -- Tertiary (QF/AA) battery

Gun-shields

:

0 -- No fourth (light) battery

0 -- No torpedo armament

++++++++++

0.00 -- No belt armor

0.00 / 0.00 -- Deck / CT

1.18 / 0.79 / 0.59 / 0.00 -- Battery armor

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Modified version of Soccksargen-class torpedo boat tender which is a modified version of the Indian Captain Jagan Rane-class tender.

Misc. Weight:

400 t = accommodation for 200 "tendee" crew (at 2 t per)

200 t = fuel for "tendees"

80 t = ammunition and stores for tendees

25 t = flag facilities

25 t = medical facilities

100 t = workshops

120 t = repair materials

Calabarzon, laid down 1931; Scrapped April 1947

Calabarzon-class submarine tender, laid down 1931

Length, 230 ft x Beam, 42.6 ft x Depth, 13.1 ft

2202 tons normal displacement (1920 tons standard)

Main battery: 2 x 2.95-inch / 75mm (2x1)

Secondary battery: 4 x 1.38-inch / 35mm (2x2)

AA battery: 4 x 0.54-inch / 13.7mm (1x4)

Weight of broadside: 32 lbs

Hull unarmored

Battery armor:

Main, 30mm shields / secondary, 20mm shields

AA, 15mm shields

Maximum speed for 3000 shp = 15.51 knots

Approximate cruising radius, 8500 nm / 12 kts

Typical complement: 161-209

Estimated cost, $1.421 million (£355,000)

Remarks:

Excellent seaboat; comfortable and able to fight her guns in the heaviest weather

Magazines and engineering spaces are roomy, with superior watertight subdivision

Ship is roomy, with superior accommodation and working space.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 4 tons = 0 pct

Armor, total ..................... 4 tons = 0 pct

Armament 4 tons = 0 pct

Machinery ........................ 90 tons = 4 pct

Hull and fittings; equipment ..... 826 tons = 38 pct

Fuel, ammunition, stores ......... 328 tons = 15 pct

Miscellaneous weights ............ 950 tons = 43 pct

-----

2202 tons = 100 pct

Estimated metacentric height, 1.5 ft

Displacement summary:

Light ship: 1874 tons

Standard displacement: 1920 tons

Normal service: 2202 tons

Full load: 2418 tons

Loading submergence 199 tons/foot

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.03

Shellfire needed to sink: 4710 lbs = 366.9 x 3.0-inch shells (Approximates weight of penetrating shell hits needed to sink ship, not counting critical hits)

Torpedoes needed to sink: 1.5 (Approximates number of 'typical' torpedo hits needed to sink ship)

Relative steadiness as gun platform, 50 percent (50 percent is 'average')

Relative rocking effect from firing to beam, 0.02

Relative quality as a seaboat: 2.00

Hull form characteristics:

Block coefficient: 0.60

Sharpness coefficient: 0.45

Hull speed coefficient 'M' = 5.39

'Natural speed' for length = 15.2 knots

Power going to wave formation at top speed: 53 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by magazines and engineering spaces: 62 percent

Relative accommodation and working space: 149 percent

Displacement factor: 189 percent (Displacement relative to loading factors)

Relative cross-sectional hull strength: 1.13 (Structure weight per square foot of hull surface: 71 lbs)

Relative longitudinal hull strength: 5.85 (for 18.0 ft average freeboard; freeboard adjustment +6.9 ft)

Relative composite hull strength: 1.33

[Machine-readable parameters: Spring Style v. 1.2.1]

229.60 x 42.64 x 13.12; 18.04 -- Dimensions

0.60 -- Block coefficient

1931 -- Year laid down

15.51 / 8500 / 12.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

950 tons -- Miscellaneous weights

++++++++++

2 x 2.95; 0 -- Main battery; turrets

Gun-shields

:

4 x 1.38; 0 -- Secondary battery; turrets

Gun-shields

:

4 x 0.54 -- Tertiary (QF/AA) battery

Gun-shields

:

0 -- No fourth (light) battery

0 -- No torpedo armament

++++++++++

0.00 -- No belt armor

0.00 / 0.00 -- Deck / CT

1.18 / 0.79 / 0.59 / 0.00 -- Battery armor

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Modified version of Soccksargen-class torpedo boat tender which is a modified version of the Indian Captain Jagan Rane-class tender.

Misc. Weight:

400 t = accommodation for 200 "tendee" crew (at 2 t per)

200 t = fuel for "tendees"

80 t = ammunition and stores for tendees

25 t = flag facilities

25 t = medical facilities

100 t = workshops

120 t = repair materials

Calabarzon, laid down 1931; Scrapped April 1947

(Historical data)

Visayas-class minelayer/sweeper tender, laid down 1932

Length, 230 ft x Beam, 42.6 ft x Depth, 13.1 ft

2202 tons normal displacement (1920 tons standard)

Main battery: 2 x 2.95-inch / 75mm (2x1)

Secondary battery: 4 x 1.38-inch / 35mm (2x2)

AA battery: 4 x 0.54-inch / 13.7mm (1x4)

Weight of broadside: 32 lbs

Hull unarmored

Battery armor:

Main, 30mm shields / secondary, 20mm shields

AA, 15mm shields

Maximum speed for 3000 shp = 15.51 knots

Approximate cruising radius, 8500 nm / 12 kts

Typical complement: 161-209

Estimated cost, $1.421 million (£355,000)

Remarks:

Excellent seaboat; comfortable and able to fight her guns in the heaviest weather

Magazines and engineering spaces are roomy, with superior watertight subdivision

Ship is roomy, with superior accommodation and working space.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 4 tons = 0 pct

Armor, total ..................... 4 tons = 0 pct

Armament 4 tons = 0 pct

Machinery ........................ 90 tons = 4 pct

Hull and fittings; equipment ..... 826 tons = 38 pct

Fuel, ammunition, stores ......... 328 tons = 15 pct

Miscellaneous weights ............ 950 tons = 43 pct

-----

2202 tons = 100 pct

Estimated metacentric height, 1.5 ft

Displacement summary:

Light ship: 1874 tons

Standard displacement: 1920 tons

Normal service: 2202 tons

Full load: 2418 tons

Loading submergence 199 tons/foot

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.03

Shellfire needed to sink: 4710 lbs = 366.9 x 3.0-inch shells (Approximates weight of penetrating shell hits needed to sink ship, not counting critical hits)

Torpedoes needed to sink: 1.5 (Approximates number of 'typical' torpedo hits needed to sink ship)

Relative steadiness as gun platform, 50 percent (50 percent is 'average')

Relative rocking effect from firing to beam, 0.02

Relative quality as a seaboat: 2.00

Hull form characteristics:

Block coefficient: 0.60

Sharpness coefficient: 0.45

Hull speed coefficient 'M' = 5.39

'Natural speed' for length = 15.2 knots

Power going to wave formation at top speed: 53 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by magazines and engineering spaces: 62 percent

Relative accommodation and working space: 149 percent

Displacement factor: 189 percent (Displacement relative to loading factors)

Relative cross-sectional hull strength: 1.13 (Structure weight per square foot of hull surface: 71 lbs)

Relative longitudinal hull strength: 5.85 (for 18.0 ft average freeboard; freeboard adjustment +6.9 ft)

Relative composite hull strength: 1.33

[Machine-readable parameters: Spring Style v. 1.2.1]

229.60 x 42.64 x 13.12; 18.04 -- Dimensions

0.60 -- Block coefficient

1931 -- Year laid down

15.51 / 8500 / 12.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

950 tons -- Miscellaneous weights

++++++++++

2 x 2.95; 0 -- Main battery; turrets

Gun-shields

:

4 x 1.38; 0 -- Secondary battery; turrets

Gun-shields

:

4 x 0.54 -- Tertiary (QF/AA) battery

Gun-shields

:

0 -- No fourth (light) battery

0 -- No torpedo armament

++++++++++

0.00 -- No belt armor

0.00 / 0.00 -- Deck / CT

1.18 / 0.79 / 0.59 / 0.00 -- Battery armor

Modified version of Soccksargen-class torpedo boat tender which is a modified version of the Indian Captain Jagan Rane-class tender.

Misc. Weight:

400 t = accommodation for 200 "tendee" crew (at 2 t per)

200 t = fuel for "tendees"

80 t = ammunition and stores for tendees

25 t = flag facilities

25 t = medical facilities

100 t = workshops

120 t = repair materials

Visayas, laid down 1932 – renamed Guadelupe 1941; scrapped April 1947

Kalatungan, laid down 1932 – renamed Labangon 1941; scrapped July 1947

Compostela, laid down 1933 – renamed Mambaling 1941; scrapped July 1947

Visayas-class minelayer/sweeper tender, laid down 1932

Length, 230 ft x Beam, 42.6 ft x Depth, 13.1 ft

2202 tons normal displacement (1920 tons standard)

Main battery: 2 x 2.95-inch / 75mm (2x1)

Secondary battery: 4 x 1.38-inch / 35mm (2x2)

AA battery: 4 x 0.54-inch / 13.7mm (1x4)

Weight of broadside: 32 lbs

Hull unarmored

Battery armor:

Main, 30mm shields / secondary, 20mm shields

AA, 15mm shields

Maximum speed for 3000 shp = 15.51 knots

Approximate cruising radius, 8500 nm / 12 kts

Typical complement: 161-209

Estimated cost, $1.421 million (£355,000)

Remarks:

Excellent seaboat; comfortable and able to fight her guns in the heaviest weather

Magazines and engineering spaces are roomy, with superior watertight subdivision

Ship is roomy, with superior accommodation and working space.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 4 tons = 0 pct

Armor, total ..................... 4 tons = 0 pct

Armament 4 tons = 0 pct

Machinery ........................ 90 tons = 4 pct

Hull and fittings; equipment ..... 826 tons = 38 pct

Fuel, ammunition, stores ......... 328 tons = 15 pct

Miscellaneous weights ............ 950 tons = 43 pct

-----

2202 tons = 100 pct

Estimated metacentric height, 1.5 ft

Displacement summary:

Light ship: 1874 tons

Standard displacement: 1920 tons

Normal service: 2202 tons

Full load: 2418 tons

Loading submergence 199 tons/foot

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.03

Shellfire needed to sink: 4710 lbs = 366.9 x 3.0-inch shells (Approximates weight of penetrating shell hits needed to sink ship, not counting critical hits)

Torpedoes needed to sink: 1.5 (Approximates number of 'typical' torpedo hits needed to sink ship)

Relative steadiness as gun platform, 50 percent (50 percent is 'average')

Relative rocking effect from firing to beam, 0.02

Relative quality as a seaboat: 2.00

Hull form characteristics:

Block coefficient: 0.60

Sharpness coefficient: 0.45

Hull speed coefficient 'M' = 5.39

'Natural speed' for length = 15.2 knots

Power going to wave formation at top speed: 53 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by magazines and engineering spaces: 62 percent

Relative accommodation and working space: 149 percent

Displacement factor: 189 percent (Displacement relative to loading factors)

Relative cross-sectional hull strength: 1.13 (Structure weight per square foot of hull surface: 71 lbs)

Relative longitudinal hull strength: 5.85 (for 18.0 ft average freeboard; freeboard adjustment +6.9 ft)

Relative composite hull strength: 1.33

[Machine-readable parameters: Spring Style v. 1.2.1]

229.60 x 42.64 x 13.12; 18.04 -- Dimensions

0.60 -- Block coefficient

1931 -- Year laid down

15.51 / 8500 / 12.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

950 tons -- Miscellaneous weights

++++++++++

2 x 2.95; 0 -- Main battery; turrets

Gun-shields

:

4 x 1.38; 0 -- Secondary battery; turrets

Gun-shields

:

4 x 0.54 -- Tertiary (QF/AA) battery

Gun-shields

:

0 -- No fourth (light) battery

0 -- No torpedo armament

++++++++++

0.00 -- No belt armor

0.00 / 0.00 -- Deck / CT

1.18 / 0.79 / 0.59 / 0.00 -- Battery armor

Modified version of Soccksargen-class torpedo boat tender which is a modified version of the Indian Captain Jagan Rane-class tender.

Misc. Weight:

400 t = accommodation for 200 "tendee" crew (at 2 t per)

200 t = fuel for "tendees"

80 t = ammunition and stores for tendees

25 t = flag facilities

25 t = medical facilities

100 t = workshops

120 t = repair materials

Visayas, laid down 1932 – renamed Guadelupe 1941; scrapped April 1947

Kalatungan, laid down 1932 – renamed Labangon 1941; scrapped July 1947

Compostela, laid down 1933 – renamed Mambaling 1941; scrapped July 1947

(Historical data)

Linguyen, Filipino Light Carrier laid down 1936

Displacement: 8,057 t light; 8,283 t standard; 9,190 t normal; 9,915 t full load

Dimensions: Length overall / water x beam x draught

570.12 ft / 541.34 ft x 65.62 ft (Bulges 75.46 ft) x 16.40 ft (normal load) [173.77 m / 165.00 m x 20.00 m (Bulges 23.00 m) x 5.00 m]

Armament:

6 - 4.53" / 115 mm guns in single mounts, 46.40lbs / 21.05kg shells, 1933 Model Dual purpose guns in deck mounts on side, all amidships, all raised mounts - superfiring

16 - 1.38" / 35.0 mm guns (8x2 guns), 1.31lbs / 0.59kg shells, 1918 Model Anti-aircraft guns in deck mounts on side ends, evenly spread, all raised mounts - superfiring

Weight of broadside 299 lbs / 136 kg

Shells per gun, main battery: 240

Armour:

Belts: Width (max) Length (avg) Height (avg)

Main: 1.97" / 50 mm 330.22 ft / 100.65 m 9.71 ft / 2.96 m

Ends: Unarmoured

Main Belt covers 94 % of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)

Main: 0.79" / 20 mm 0.39" / 10 mm -

2nd: 0.79" / 20 mm 0.39" / 10 mm -

Armour deck: 1.57" / 40 mm, Conning tower: 3.94" / 100 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 2 shafts, 72,862 shp / 54,355 Kw = 32.00 kts

Range 8,000nm at 15.00 kts

Bunker at max displacement = 1,632 tons

Complement: 469 - 610

Cost: £2.887 million / $11.547 million

Distribution of weights at normal displacement:

Armament: 37 tons, 0.4 %

Armour: 1,028 tons, 11.2 %

- Belts: 270 tons, 2.9 %

- Torpedo bulkhead: 0 tons, 0.0 %

- Armament: 17 tons, 0.2 %

- Armour Deck: 704 tons, 7.7 %

- Conning Tower: 37 tons, 0.4 %

Machinery: 2,123 tons, 23.1 %

Hull, fittings & equipment: 3,635 tons, 39.6 %

Fuel, ammunition & stores: 1,132 tons, 12.3 %

Miscellaneous weights: 1,234 tons, 13.4 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 14,844 lbs / 6,733 Kg = 319.9 x 4.5 " / 115 mm shells or 2.0 torpedoes

Stability (Unstable if below 1.00): 1.20

Metacentric height 3.7 ft / 1.1 m

Roll period: 16.4 seconds

Steadiness - As gun platform (Average = 50 %): 70 %

- Recoil effect (Restricted arc if above 1.00): 0.03

Seaboat quality (Average = 1.00): 1.22

Hull form characteristics:

Hull has rise forward of midbreak and transom stern

Block coefficient: 0.480

Length to Beam Ratio: 7.17: 1

'Natural speed' for length: 27.38 kts

Power going to wave formation at top speed: 61 %

Trim (Max stability = 0, Max steadiness = 100): 58

Bow angle (Positive = bow angles forward): 30.00 degrees

Stern overhang: 9.84 ft / 3.00 m

Freeboard (% = measuring location as a percentage of overall length):

- Stem: 32.81 ft / 10.00 m

- Forecastle (22 %): 29.53 ft / 9.00 m

- Mid (50 %): 26.25 ft / 8.00 m (19.69 ft / 6.00 m aft of break)

- Quarterdeck (17 %): 19.69 ft / 6.00 m

- Stern: 19.69 ft / 6.00 m

- Average freeboard: 24.44 ft / 7.45 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 93.4 %

- Above water (accommodation/working, high = better): 230.1 %

Waterplane Area: 24,163 Square feet or 2,245 Square metres

Displacement factor (Displacement / loading): 135 %

Structure weight / hull surface area: 92 lbs/sq ft or 450 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 0.91

- Longitudinal: 2.18

- 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

Space for 32 aircraft, along with 4 spares at 25 tons each.

110 tons reserved for command spaces and growth.

Linguyen, Filipino Light Carrier laid down 1936

Displacement: 8,057 t light; 8,283 t standard; 9,190 t normal; 9,915 t full load

Dimensions: Length overall / water x beam x draught

570.12 ft / 541.34 ft x 65.62 ft (Bulges 75.46 ft) x 16.40 ft (normal load) [173.77 m / 165.00 m x 20.00 m (Bulges 23.00 m) x 5.00 m]

Armament:

6 - 4.53" / 115 mm guns in single mounts, 46.40lbs / 21.05kg shells, 1933 Model Dual purpose guns in deck mounts on side, all amidships, all raised mounts - superfiring

16 - 1.38" / 35.0 mm guns (8x2 guns), 1.31lbs / 0.59kg shells, 1918 Model Anti-aircraft guns in deck mounts on side ends, evenly spread, all raised mounts - superfiring

Weight of broadside 299 lbs / 136 kg

Shells per gun, main battery: 240

Armour:

Belts: Width (max) Length (avg) Height (avg)

Main: 1.97" / 50 mm 330.22 ft / 100.65 m 9.71 ft / 2.96 m

Ends: Unarmoured

Main Belt covers 94 % of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)

Main: 0.79" / 20 mm 0.39" / 10 mm -

2nd: 0.79" / 20 mm 0.39" / 10 mm -

Armour deck: 1.57" / 40 mm, Conning tower: 3.94" / 100 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 2 shafts, 72,862 shp / 54,355 Kw = 32.00 kts

Range 8,000nm at 15.00 kts

Bunker at max displacement = 1,632 tons

Complement: 469 - 610

Cost: £2.887 million / $11.547 million

Distribution of weights at normal displacement:

Armament: 37 tons, 0.4 %

Armour: 1,028 tons, 11.2 %

- Belts: 270 tons, 2.9 %

- Torpedo bulkhead: 0 tons, 0.0 %

- Armament: 17 tons, 0.2 %

- Armour Deck: 704 tons, 7.7 %

- Conning Tower: 37 tons, 0.4 %

Machinery: 2,123 tons, 23.1 %

Hull, fittings & equipment: 3,635 tons, 39.6 %

Fuel, ammunition & stores: 1,132 tons, 12.3 %

Miscellaneous weights: 1,234 tons, 13.4 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 14,844 lbs / 6,733 Kg = 319.9 x 4.5 " / 115 mm shells or 2.0 torpedoes

Stability (Unstable if below 1.00): 1.20

Metacentric height 3.7 ft / 1.1 m

Roll period: 16.4 seconds

Steadiness - As gun platform (Average = 50 %): 70 %

- Recoil effect (Restricted arc if above 1.00): 0.03

Seaboat quality (Average = 1.00): 1.22

Hull form characteristics:

Hull has rise forward of midbreak and transom stern

Block coefficient: 0.480

Length to Beam Ratio: 7.17: 1

'Natural speed' for length: 27.38 kts

Power going to wave formation at top speed: 61 %

Trim (Max stability = 0, Max steadiness = 100): 58

Bow angle (Positive = bow angles forward): 30.00 degrees

Stern overhang: 9.84 ft / 3.00 m

Freeboard (% = measuring location as a percentage of overall length):

- Stem: 32.81 ft / 10.00 m

- Forecastle (22 %): 29.53 ft / 9.00 m

- Mid (50 %): 26.25 ft / 8.00 m (19.69 ft / 6.00 m aft of break)

- Quarterdeck (17 %): 19.69 ft / 6.00 m

- Stern: 19.69 ft / 6.00 m

- Average freeboard: 24.44 ft / 7.45 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 93.4 %

- Above water (accommodation/working, high = better): 230.1 %

Waterplane Area: 24,163 Square feet or 2,245 Square metres

Displacement factor (Displacement / loading): 135 %

Structure weight / hull surface area: 92 lbs/sq ft or 450 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 0.91

- Longitudinal: 2.18

- 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

Space for 32 aircraft, along with 4 spares at 25 tons each.

110 tons reserved for command spaces and growth.

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