WesWorld

Repository for data pertaining to vessels lost, scrapped, sold or otherwise disposed of.

These vessels were paid off in January 1941 prior to scrapping

(Historical data)

Filipino Cavite class gunboat, laid down 1925

Displacement: 478 t light; 501 t standard; 545 t normal; 577 t full load

Dimensions: Length overall / water x beam x draught

173.52 ft / 172.00 ft x 28.00 ft x 9.00 ft (normal load) [52.89 m / 52.43 m x 8.53 m x 2.74 m]

Armament:

2 - 3.94" / 100 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1923 Model Quick firing guns in deck mounts on centreline ends, evenly spread
2 - 3.94" / 100 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1923 Model Quick firing guns in deck mounts on side, all amidships
1 - 2.24" / 57.0 mm guns in a single mount, 6.00lbs / 2.72kg shells, 1923 Model Dual purpose gun in a deck mount on centreline aft, raised - superfiring
2 - 0.54" / 13.7 mm guns in single mounts, 0.11lbs / 0.05kg shells, 1925 Model Machine guns in deck mounts on side, all aft
Weight of broadside 134 lbs / 61 kg
Shells per gun, main battery: 150

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 111.80 ft / 34.08 m 6.35 ft / 1.94 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

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

Armour deck: 0.98" / 25 mm, Conning tower: 2.36" / 60 mm

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 1,244 shp / 928 Kw = 16.09 kts
Range 5,000nm at 10.00 kts (Bunkerage = 78 tons)

Complement: 9 officers and 56 men

Cost: £0.117 million / $0.469 million

Distribution of weights at normal displacement:

Armament: 16 tons, 2.9 %
Armour: 196 tons, 36.0 %
- Belts: 121 tons, 22.2 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 14 tons, 2.6 %
- Armour Deck: 58 tons, 10.6 %
- Conning Tower: 3 tons, 0.6 %
Machinery: 40 tons, 7.4 %
Hull, fittings & equipment: 220 tons, 40.4 %
Fuel, ammunition & stores: 67 tons, 12.3 %
Miscellaneous weights: 5 tons, 0.9 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 1,550 lbs / 703 Kg = 50.8 x 3.9 " / 100 mm shells or 1.2 torpedoes
Stability (Unstable if below 1.00): 1.28
Metacentric height 1.2 ft / 0.4 m
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.20
Seaboat quality (Average = 1.00): 1.63

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.440
Length to Beam Ratio: 6.14: 1
'Natural speed' for length: 15.77 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 43
Bow angle (Positive = bow angles forward): 6.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 14.43 ft / 4.40 m
- Forecastle (20 %): 9.18 ft / 2.80 m
- Mid (50 %): 9.18 ft / 2.80 m
- Quarterdeck (15 %): 9.18 ft / 2.80 m
- Stern: 9.18 ft / 2.80 m
- Average freeboard: 9.60 ft / 2.93 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 50.2 %
- Above water (accommodation/working, high = better): 98.8 %
Waterplane Area: 3,165 Square feet or 294 Square metres
Displacement factor (Displacement / loading): 133 %
Structure weight / hull surface area: 44 lbs/sq ft or 213 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 4.13
- Overall: 1.15
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather


Cavite – laid down 1925 – renamed Hulk 201 Jan 1941 prior to scrapping
Isabela – laid down 1925 – renamed Hulk 202 Jan 1941 prior to scrapping
Bataan – laid down 1925 – renamed Hulk 203 Jan 1941 prior to scrapping
Kudarat – laid down 1925 – renamed Hulk 204 Jan 1941 prior to scrapping
Capital – laid down 1925 – sunk 1929
Batanes – laid down 1925 – renamed Hulk 205 Jan 1941 prior to scrapping
Mindoro – laid down 1925 – renamed Hulk 206 Jan 1941 prior to scrapping
Antarctica – laid down 1925 – renamed Hulk 207 Jan 1941 prior to scrapping

These vessels were paid off in January 1941 prior to scrapping

(Historical data)

Filipino La Union-class gunboat, laid down 1927

Displacement: 517 t light; 551 t standard; 596 t normal; 632 t full load

Dimensions: Length overall / water x beam x draught

173.52 ft / 172.00 ft x 28.00 ft x 9.84 ft (normal load) [52.89 m / 52.43 m x 8.53 m x 3.00 m]

Armament:

2 - 6.10" / 155 mm guns in single mounts, 120.00lbs / 54.43kg shells, 1926 Model Breech loading guns in deck mounts on centreline ends, evenly spread
2 - 2.24" / 57.0 mm guns in single mounts, 6.00lbs / 2.72kg shells, 1923 Model Quick firing guns in deck mounts on side, all amidships
1 - 1.57" / 40.0 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1918 Model Anti-aircraft gun in deck mount on centreline aft, 1 raised gun
2 - 0.54" / 13.7 mm guns in single mounts, 0.11lbs / 0.05kg shells, 1925 Model Machine guns in deck mounts on side, all aft
Weight of broadside 254 lbs / 115 kg
Shells per gun, main battery: 150

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 111.80 ft / 34.08 m 6.35 ft / 1.94 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.57" / 40 mm - -
2nd: 1.57" / 40 mm - -
3rd: 0.79" / 20 mm - -

Armour deck: 0.98" / 25 mm, Conning tower: 2.36" / 60 mm

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 1,313 shp / 980 Kw = 16.09 kts
Range 5,000nm at 10.00 kts (Bunkerage = 81 tons)

Complement: 59 - 78

Cost: £0.179 million / $0.715 million

Distribution of weights at normal displacement:

Armament: 30 tons, 5.0 %
Armour: 197 tons, 33.1 %
- Belts: 121 tons, 20.3 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 15 tons, 2.5 %
- Armour Deck: 58 tons, 9.7 %
- Conning Tower: 4 tons, 0.6 %
Machinery: 41 tons, 7.0 %
Hull, fittings & equipment: 244 tons, 40.9 %
Fuel, ammunition & stores: 79 tons, 13.2 %
Miscellaneous weights: 5 tons, 0.8 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 1,266 lbs / 574 Kg = 11.1 x 6.1 " / 155 mm shells or 0.9 torpedoes
Stability (Unstable if below 1.00): 1.27
Metacentric height 1.1 ft / 0.3 m
Roll period: 11.0 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.36
Seaboat quality (Average = 1.00): 1.60

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.440
Length to Beam Ratio: 6.14: 1
'Natural speed' for length: 15.77 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 44
Bow angle (Positive = bow angles forward): 6.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 14.43 ft / 4.40 m
- Forecastle (20 %): 9.18 ft / 2.80 m
- Mid (50 %): 9.18 ft / 2.80 m
- Quarterdeck (15 %): 9.18 ft / 2.80 m
- Stern: 9.18 ft / 2.80 m
- Average freeboard: 9.60 ft / 2.93 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 63.5 %
- Above water (accommodation/working, high = better): 93.8 %
Waterplane Area: 3,165 Square feet or 294 Square metres
Displacement factor (Displacement / loading): 113 %
Structure weight / hull surface area: 47 lbs/sq ft or 230 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 4.56
- Overall: 1.14

Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather


La Union – laid down 1927 – Renamed Hulk 210 Jan 1941 prior to scrapping
Pangasinan – laid down 1927 – Renamed Hulk 211 Jan 1941 prior to scrapping
Zambales – laid down 1927 – Renamed Hulk 212 Jan 1941 prior to scrapping
Nueva Ecija – laid down 1927 – Renamed Hulk 213 Jan 1941 prior to scrapping

Nueva Vizcaya – projected but cancelled
Compostela – projected but cancelled
Sibugay – projected but cancelled
Maguindanao – projected but cancelled

(Historical data)

Filipino Sierra-class subchaser, laid down 1925

Displacement: 284 t light; 296 t standard; 330 t normal; 357 t full load

Dimensions: Length overall / water x beam x draught

213.08 ft / 210.00 ft x 20.00 ft x 5.00 ft (normal load) [64.95 m / 64.01 m x 6.10 m x 1.52 m]

Armament:

2 - 3.94" / 100 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1923 Model Quick firing guns in deck mounts with hoists on centreline ends, evenly spread
2 - 1.57" / 40.0 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1918 Model Anti-aircraft guns in deck mounts on side, all amidships
2 - 0.54" / 13.7 mm guns in single mounts, 0.11lbs / 0.05kg shells, 1925 Model Machine guns in deck mounts on side, all amidships, all raised mounts
Weight of broadside 68 lbs / 31 kg
Shells per gun, main battery: 150

Depth charges @ 550lb each: 40

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.18" / 30 mm 0.59" / 15 mm 0.79" / 20 mm
2nd: 0.79" / 20 mm - -

Machinery:

Diesel Internal combustion motors, Geared drive, 1 shaft, 2,001 shp / 1,493 Kw = 19.08 kts
Range 3,000nm at 12.00 kts (Bunkerage = 60 tons)

Complement: 9 officers and 35 men

Cost: £0.085 million / $0.339 million

Distribution of weights at normal displacement:

Armament: 8 tons, 2.5 %
Armour: 5 tons, 1.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 1.6 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 65 tons, 19.7 %
Hull, fittings & equipment: 196 tons, 59.3 %
Fuel, ammunition & stores: 46 tons, 14.0 %
Miscellaneous weights: 10 tons, 3.0 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship):
572 lbs / 259 Kg = 18.7 x 3.9 " / 100 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 0.5 ft / 0.2 m
Roll period: 11.5 seconds
Steadiness - As gun platform (Average = 50 %): 61 %
- Recoil effect (Restricted arc if above 1.00): 0.56
Seaboat quality (Average = 1.00): 1.22

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.550
Length to Beam Ratio: 10.50 : 1
'Natural speed' for length: 14.49 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 50
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: 11.50 ft / 3.51 m
- Forecastle (20 %): 9.00 ft / 2.74 m
- Mid (60 %): 7.00 ft / 2.13 m
- Quarterdeck (15 %): 7.00 ft / 2.13 m
- Stern: 7.00 ft / 2.13 m
- Average freeboard: 8.00 ft / 2.44 m
Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 86.9 %
- Above water (accommodation/working, high = better): 108.5 %
Waterplane Area: 2,843 Square feet or 264 Square metres
Displacement factor (Displacement / loading): 157 %
Structure weight / hull surface area: 40 lbs/sq ft or 195 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.13
- Longitudinal: 2.29
- Overall: 1.21
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily


Sierra – laid down 1925 – renamed Hulk 301 Jan 1941 prior to scrapping
Colorado – laid down 1925 – renamed Hulk 302 Jan 1941 prior to scrapping
Alta – laid down 1925 – renamed Hulk 303 Jan 1941 prior to scrapping
Baja – laid diwon 1935 – renamed Hulk 304 Jan 1941 prior to scrapping
Uncompahgre – laid down 1926 – renamed Hulk 305 Jan 1941 prior to scrapping
Vista – laid down 1926 – renamed Hulk 306 Jan 1941 prior to scrapping
Vallejo – laid down 1926 – renamed Hulk 307 Jan 1941 prior to scrapping
Punta – laid down 1926 – renamed Hulk 308 Jan 1941 prior to scrapping
Cabo – laid down 1926 – renamed Hulk 309 Jan 1941 prior to scrapping
Isla – laid down 1926 – renamed Hulk 310 Jan 1941 prior to scrapping
Casa – laid down 1926 – renamed Hulk 311 Jan 1941 prior to scrapping
Golfo – laid down 1926 – renamed Hulk 312 Jan 1941 prior to scrapping

This vessel was sold to the Bharati Navy in January 1942.

--------

Sulu class Aircraft Carrier

Sulu, Filipino aircraft carrier, laid down 1927

Displacement: 12,675 t light; 13,083 t standard; 14,627 t normal; 15,862 t full load

Dimensions: Length overall / water x beam x draught

678.32 ft / 665.85 ft x 74.11 ft x 20.34 ft (normal load) [206.75 m / 202.95 m x 22.59 m x 6.20 m]

Air Group:
40 aircraft

Armament:

6 - 6.10" / 155 mm guns (2x3 guns), 120.00lbs / 54.43kg shells, 1926 Model Breech loading guns in turrets (on barbettes) on centreline, all aft, 1 raised mount aft - superfiring
16 - 3.94" / 100 mm guns (8x2 guns), 32.00lbs / 14.51kg shells, 1923 Model Dual purpose guns in deck mounts with hoists on side, evenly spread, all raised mounts
12 - 0.98" / 25.0 mm guns (4x3 guns), 0.57lbs / 0.26kg shells, 1925 Model Anti-aircraft guns in deck mounts on side ends, evenly spread, all raised mounts - superfiring
4 - 0.54" / 13.7 mm guns (2x2 guns), 0.11lbs / 0.05kg shells, 1925 Model Machine guns in deck mounts on side, all amidships, all raised mounts - superfiring
4 - 0.54" / 13.7 mm guns in single mounts, 0.11lbs / 0.05kg shells, 1925 Model Machine guns in deck mounts on side ends, evenly spread
Weight of broadside 1,240 lbs / 562 kg
Shells per gun, main battery: 150

4 - 18.0" / 457.2 mm submerged torpedo tubes

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 419.95 ft / 128.00 m 10.66 ft / 3.25 m
Ends: Unarmoured
Upper: 1.97" / 50 mm 492.13 ft / 150.00 m 17.22 ft / 5.25 m
Main Belt covers 97 % of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.94" / 100 mm 1.97" / 50 mm 3.15" / 80 mm
2nd: 1.18" / 30 mm 0.59" / 15 mm 0.79" / 20 mm
3rd: 0.59" / 15 mm - -

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

Machinery:

Oil fired boilers, steam turbines, Geared drive, 4 shafts, 104,370 shp / 77,860 Kw = 32.01 kts
Range 14,875nm at 12.00 kts (Bunkerage = 2,779 tons)

Complement: 664 - 864

Cost: £3.740 million / $14.958 million

Distribution of weights at normal displacement:

Armament: 147 tons, 1.0 %
Armour: 2,456 tons, 16.8 %
- Belts: 1,283 tons, 8.8 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 166 tons, 1.1 %
- Armour Deck: 967 tons, 6.6 %
- Conning Tower: 41 tons, 0.3 %
Machinery: 3,295 tons, 22.5 %
Hull, fittings & equipment: 5,153 tons, 35.2 %
Fuel, ammunition & stores: 1,951 tons, 13.3 %
Miscellaneous weights: 1,625 tons, 11.1 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 17,778 lbs / 8,064 Kg = 156.5 x 6.1 " / 155 mm shells or 2.0 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 4.0 ft / 1.2 m
Roll period: 15.6 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.18
Seaboat quality (Average = 1.00): 1.10

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.510
Length to Beam Ratio: 8.98 : 1
'Natural speed' for length: 25.80 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 64
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: 25.26 ft / 7.70 m
- Forecastle (27 %): 22.74 ft / 6.93 m
- Mid (87 %): 15.16 ft / 4.62 m
- Quarterdeck (10 %): 15.16 ft / 4.62 m
- Stern: 15.16 ft / 4.62 m
- Average freeboard: 19.75 ft / 6.02 m
Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 96.3 %
- Above water (accommodation/working, high = better): 178.6 %
Waterplane Area: 33,182 Square feet or 3,083 Square metres
Displacement factor (Displacement / loading): 123 %
Structure weight / hull surface area: 107 lbs/sq ft or 523 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.04
- 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

This vessel was sold to Mexico and delivered in January 1942.

(Historical data)

Samal, Filipino battlecruiser, laid down 1925

Displacement: 23,120 t light; 24,355 t standard; 26,422 t normal; 27,969 t full load

Dimensions: Length overall / water x beam x draught

752.68 ft / 750.00 ft x 80.00 ft (Bulges 91.20 ft) x 26.00 ft (normal load) [229.42 m / 228.60 m x 24.38 m (Bulges 27.80 m) x 7.92 m]

Armament:

6 - 12.60" / 320 mm guns (3x2 guns), 1,050.00lbs / 476.27kg shells, 1926 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring
10 - 6.10" / 155 mm guns (5x2 guns), 120.00lbs / 54.43kg shells, 1926 Model Breech loading guns in turrets (on barbettes) on side, all amidships, 1 raised mount - superfiring
18 - 3.94" / 100 mm guns (6x2, 6x1 guns), 32.00lbs / 14.51kg shells, 1923 Model Dual purpose guns in deck mounts with hoists on side, evenly spread, 8 raised mounts - 2 superfiring
4 - 2.24" / 57.0 mm guns in single mounts, 6.00lbs / 2.72kg shells, 1923 Model Dual purpose guns in deck mounts on side, all amidships, all raised mounts
8 - 1.57" / 40.0 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1918 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 8,116 lbs / 3,681 kg
Shells per gun, main battery: 150

8 - 21.0" / 533.5 mm above water torpedoes (provision for 24" / 610 mm)

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 8.27" / 210 mm 564.00 ft / 171.91 m 11.46 ft / 3.49 m
Ends: Unarmoured
Upper: 1.57" / 40 mm 564.00 ft / 171.91 m 14.00 ft / 4.27 m
Main Belt covers 116 % of normal length

Torpedo Bulkhead and Bulges: 1.18" / 30 mm 564.00 ft / 171.91 m 23.33 ft / 7.11 m

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8.27" / 210 mm 5.12" / 130 mm 8.27" / 210 mm
2nd: 2.95" / 75 mm 1.57" / 40 mm 2.95" / 75 mm
3rd: 1.18" / 30 mm 0.54" / 14 mm 0.59" / 15 mm
4th: 0.98" / 25 mm - -
5th: 0.79" / 20 mm - -

Armour deck: 3.15" / 80 mm, Conning tower: 5.12" / 130 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 4 shafts, 140,750 shp / 105,000 Kw = 31.73 kts
Range 13,500nm at 12.00 kts (Bunkerage = 3,683 tons)

Complement: 67 officers and 1,125 men

Cost: £7.396 million / $29.584 million

Distribution of weights at normal displacement:

Armament: 965 tons, 3.7 %
Armour: 7,141 tons, 27.0 %
- Belts: 2,697 tons, 10.2 %
- Torpedo bulkhead: 575 tons, 2.2 %
- Armament: 1,482 tons, 5.6 %
- Armour Deck: 2,289 tons, 8.7 %
- Conning Tower: 98 tons, 0.4 %
Machinery: 4,570 tons, 17.3 %
Hull, fittings & equipment: 10,344 tons, 39.1 %
Fuel, ammunition & stores: 3,302 tons, 12.5 %
Miscellaneous weights: 100 tons, 0.4 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship):
19,970 lbs / 9,058 Kg = 19.1 x 12.6 " / 320 mm shells or 2.8 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 5.3 ft / 1.6 m
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.56
Seaboat quality (Average = 1.00): 1.11

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.520
Length to Beam Ratio: 8.22: 1
'Natural speed' for length: 27.39 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 63
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 30.60 ft / 9.33 m
- Forecastle (20 %): 22.50 ft / 6.86 m
- Mid (50 %): 21.50 ft / 6.55 m
- Quarterdeck (15 %): 21.50 ft / 6.55 m
- Stern: 21.50 ft / 6.55 m
- Average freeboard: 22.50 ft / 6.86 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 115.6 %
- Above water (accommodation/working, high = better): 138.1 %
Waterplane Area: 39,280 Square feet or 3,649 Square metres
Displacement factor (Displacement / loading): 110 %
Structure weight / hull surface area: 163 lbs/sq ft or 798 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.11
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform

Armour belt is 210mm + 40mm decapping plate

Misc. weight:
50t...catapult+aircraft
25t...flag accommodations
25t...acclimatization

Trials @ 24,000t, 20% overload: 33.67knt

This vessel was sold to Mexico and delivered in January 1942.

(Historical data)

Bohol, Filipino Battlecruiser laid down 1926

Displacement: 23,452 t light; 24,670 t standard; 26,930 t normal; 28,738 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:

6 - 12.60" / 320 mm guns (3x2 guns), 1,050.00lbs / 476.27kg shells, 1926 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring
10 - 6.10" / 155 mm guns (5x2 guns), 120.00lbs / 54.43kg shells, 1926 Model Breech loading guns in turrets (on barbettes) on side, all amidships, 1 raised mount - superfiring
24 - 2.95" / 75.0 mm guns (12x2 guns), 13.00lbs / 5.90kg shells, 1926 Model Dual purpose guns in deck mounts with hoists on side, evenly spread, 8 raised mounts - 2 superfiring
8 - 1.38" / 35.0 mm guns (2x2, 4x1 guns), 1.32lbs / 0.60kg shells, 1929 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
8 - 1.38" / 35.0 mm guns (4x2 guns), 1.32lbs / 0.60kg shells, 1929 Model Breech loading guns in deck mounts on side, all amidships, all raised mounts
Weight of broadside 7,833 lbs / 3,553 kg
Shells per gun, main battery: 150

8 - 21.0" above water torpedoes (provision for 24" / 610mm)

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 8.27" / 210 mm 534.78 ft / 163.00 m 11.48 ft / 3.50 m
Ends: Unarmoured
Upper: 1.57" / 40 mm 534.78 ft / 163.00 m 13.12 ft / 4.00 m
Main Belt covers 110 % of normal length

Torpedo Bulkhead and Bulges: 1.18" / 30 mm 534.78 ft / 163.00 m 23.29 ft / 7.10 m

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8.27" / 210 mm 5.12" / 130 mm 8.27" / 210 mm
2nd: 2.95" / 75 mm 1.57" / 40 mm 2.95" / 75 mm
3rd: 1.18" / 30 mm - -
4th: 0.79" / 20 mm - -
5th: 0.59" / 15 mm - -

Armour deck: 3.94" / 100 mm, Conning tower: 5.12" / 130 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 4 shafts, 140,929 shp / 105,133 Kw = 31.66 kts
Range 14,850nm at 12.00 kts (Bunkerage = 4,069 tons)

Complement: 1,050 - 1,366

Cost: £7.725 million / $30.901 million

Distribution of weights at normal displacement:

Armament: 933 tons, 3.5 %
Armour: 7,615 tons, 28.3 %
- Belts: 2,552 tons, 9.5 %
- Torpedo bulkhead: 544 tons, 2.0 %
- Armament: 1,453 tons, 5.4 %
- Armour Deck: 2,966 tons, 11.0 %
- Conning Tower: 99 tons, 0.4 %
Machinery: 4,511 tons, 16.8 %
Hull, fittings & equipment: 10,292 tons, 38.2 %
Fuel, ammunition & stores: 3,478 tons, 12.9 %
Miscellaneous weights: 100 tons, 0.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
22,576 lbs / 10,240 Kg = 22.6 x 12.6 " / 320 mm shells or 3.1 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 4.4 ft / 1.3 m
Roll period: 18.2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.52
Seaboat quality (Average = 1.00): 1.11

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.520
Length to Beam Ratio: 8.22: 1
'Natural speed' for length: 27.39 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 63
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: -2.00 ft / -0.61 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): 109.7 %
- Above water (accommodation/working, high = better): 138.0 %
Waterplane Area: 40,718 Square feet or 3,783 Square metres
Displacement factor (Displacement / loading): 111 %
Structure weight / hull surface area: 161 lbs/sq ft or 787 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.10
- 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

Armour belt is 210mm + 40mm decapping plate

Misc. weight:
75t...catapult+2 aircraft
25t...acclimatization

(Historical data)

Panabo (former Peruvian Lima-class Coast Defense Battleship) laid down 1926, sold to Poland 1936

Displacement: 7,594 t light; 8,002 t standard; 8,672 t normal; 9,208 t full load

Dimensions: Length overall / water x beam x draught

417.29 ft / 408.00 ft x 63.50 ft x 21.30 ft (normal load) [127.19 m / 124.36 m x 19.35 m x 6.49 m]

Armament:

4 - 12.00" / 305 mm guns (2x2 guns), 864.00lbs / 391.90kg shells, 1926 Model Breech loading guns in turrets (on barbettes) on centreline ends, evenly spread
4 - 6.00" / 152 mm guns (2x2 guns), 108.00lbs / 48.99kg shells, 1926 Model Quick firing guns in turrets (on barbettes) on centreline ends, evenly spread, all raised mounts - superfiring
12 - 3.00" / 76.2 mm guns (6x2 guns), 13.50lbs / 6.12kg shells, 1926 Model Quick firing guns in deck mounts with hoists on side, evenly spread
8 - 1.57" / 40.0 mm guns (6 mounts), 1.95lbs / 0.89kg shells, 1926 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
8 - 0.98" / 25.0 mm guns (6 mounts), 0.48lbs / 0.22kg shells, 1926 Model Anti-aircraft guns in deck mounts on side, evenly spread
Weight of broadside 4,069 lbs / 1,846 kg
Shells per gun, main battery: 100

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 10.0" / 255 mm 183.73 ft / 56.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 69 % of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.0" / 255 mm 5.91" / 150 mm 10.0" / 255 mm
2nd: 1.97" / 50 mm 1.18" / 30 mm 1.97" / 50 mm
3rd: 1.18" / 30 mm - -
4th: 0.79" / 20 mm - -
5th: 0.59" / 15 mm - -

Armour deck: 3.54" / 90 mm, Conning tower: 2.56" / 65 mm

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 20,600 shp / 15,368 Kw = 21.75 kts
Range 13,700nm at 10.00 kts (Bunkerage = 1,206 tons)

Complement: 449 - 584

Cost: £2.713 million / $10.853 million

Distribution of weights at normal displacement:

Armament: 509 tons, 5.9 %
Armour: 2,837 tons, 32.7 %
- Belts: 868 tons, 10.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 761 tons, 8.8 %
- Armour Deck: 1,185 tons, 13.7 %
- Conning Tower: 23 tons, 0.3 %
Machinery: 659 tons, 7.6 %
Hull, fittings & equipment: 3,589 tons, 41.4 %
Fuel, ammunition & stores: 1,077 tons, 12.4 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 12,246 lbs / 5,555 Kg = 14.2 x 12.0 " / 305 mm shells or 2.2 torpedoes
Stability (Unstable if below 1.00): 1.05
Metacentric height 2.8 ft / 0.8 m
Roll period: 16.0 seconds
Steadiness - As gun platform (Average = 50 %): 63 %
- Recoil effect (Restricted arc if above 1.00): 0.80
Seaboat quality (Average = 1.00): 1.23

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.550
Length to Beam Ratio: 6.43 : 1
'Natural speed' for length: 20.20 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 51
Bow angle (Positive = bow angles forward): 22.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.00 ft / 7.01 m
- Forecastle (20 %): 16.00 ft / 4.88 m
- Mid (50 %): 15.00 ft / 4.57 m
- Quarterdeck (15 %): 15.00 ft / 4.57 m
- Stern: 15.00 ft / 4.57 m
- Average freeboard: 15.91 ft / 4.85 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 69.2 %
- Above water (accommodation/working, high = better): 116.8 %
Waterplane Area: 18,081 Square feet or 1,680 Square metres
Displacement factor (Displacement / loading): 105 %
Structure weight / hull surface area: 134 lbs/sq ft or 653 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 2.41
- Overall: 1.04
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily

(Historical data)

Filipino Palawan-class Escort cruiser, laid down 1915, rebuilt 1919

Displacement: 4,314 t light; 4,522 t standard; 7,065 t normal; 9,099 t full load

Dimensions: Length overall / water x beam x draught

321.00 ft / 321.00 ft x 56.00 ft x 21.00 ft (normal load) [97.84 m / 97.84 m x 17.07 m x 6.40 m]

Armament:

6 - 6.00" / 152 mm guns (3x2 guns), 108.00lbs / 48.99kg shells, 1919 Model Breech loading guns in turrets (on barbettes) on centreline, evenly spread, Aft Main mounts separated by engine room
6 - 3.00" / 76.2 mm guns in single mounts, 14.00lbs / 6.35kg shells, 1919 Model Quick firing guns in casemate mounts on side, evenly spread
12 - 1.57" / 40.0 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1918 Model Quick firing guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 756 lbs / 343 kg
Shells per gun, main battery: 150

8 - 21.0" / 533.4 mm above water torpedoes

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 2.00" / 51 mm 142.97 ft / 43.58 m 8.98 ft / 2.74 m
Ends: 0.50" / 13 mm 178.01 ft / 54.26 m 8.98 ft / 2.74 m
Upper: 0.50" / 13 mm 142.97 ft / 43.58 m 8.00 ft / 2.44 m
Main Belt covers 69 % of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.00" / 102 mm 2.00" / 51 mm 4.00" / 102 mm
2nd: 2.00" / 51 mm - -
3rd: 0.25" / 6 mm - -

Armour deck: 1.00" / 25 mm, Conning tower: 5.00" / 127 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 4 shafts, 32,765 shp / 24,442 Kw = 24.00 kts
Range 6,257nm at 21.00 kts (Bunkerage = 4,577 tons)

Complement: 34 officers and 408 men

Cost: £0.587 million / $2.349 million

Distribution of weights at normal displacement:

Armament: 94 tons, 1.3 %
Armour: 693 tons, 9.8 %
- Belts: 185 tons, 2.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 212 tons, 3.0 %
- Armour Deck: 256 tons, 3.6 %
- Conning Tower: 40 tons, 0.6 %
Machinery: 1,241 tons, 17.6 %
Hull, fittings & equipment: 2,271 tons, 32.1 %
Fuel, ammunition & stores: 2,751 tons, 38.9 %
Miscellaneous weights: 15 tons, 0.2 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 11,477 lbs / 5,206 Kg = 106.3 x 6.0 " / 152 mm shells or 2.0 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 2.7 ft / 0.8 m
Roll period: 14.4 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.26
Seaboat quality (Average = 1.00): 0.93

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.655
Length to Beam Ratio: 5.73 : 1
'Natural speed' for length: 17.92 kts
Power going to wave formation at top speed: 69 %
Trim (Max stability = 0, Max steadiness = 100): 76
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: 19.40 ft / 5.91 m
- Forecastle (28 %): 19.40 ft / 5.91 m
- Mid (50 %): 19.40 ft / 5.91 m
- Quarterdeck (28 %): 19.40 ft / 5.91 m
- Stern: 19.40 ft / 5.91 m
- Average freeboard: 19.40 ft / 5.91 m
Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 68.5 %
- Above water (accommodation/working, high = better): 92.3 %
Waterplane Area: 13,834 Square feet or 1,285 Square metres
Displacement factor (Displacement / loading): 179 %
Structure weight / hull surface area: 102 lbs/sq ft or 497 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.07
- Longitudinal: 4.20
- Overall: 1.22
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather


Palawan – laid down 1915, rebuild 1919, destroyed 1927
Leyte– laid down 1922, to Pacifica 1926
Panay – laid down 1922, scrapped by India 1929
Mindanao – laid down 1923, constructive total loss 1924
Negros - cancelled
Basilan - cancelled

(Historical data)

Bugsuk, ex-Japanese Nisshin, Filipino armoured cruiser, laid down 1902 (Engine 1928?)

Displacement: 6,836 t light; 7,295 t standard; 8,545 t normal; 9,546 t full load

Dimensions: Length overall / water x beam x draught

362.57 ft / 357.00 ft x 62.00 ft x 23.50 ft (normal load) [110.51 m / 108.81 m x 18.90 m x 7.16 m]

Armament:

4 - 8.27" / 210 mm guns (2x2 guns), 300.00lbs / 136.08kg shells, 1928 Model Breech loading guns in turrets (on barbettes) on centreline, evenly spread
14 - 5.91" / 150 mm guns in single mounts, 106.92lbs / 48.50kg shells, 1931 Model Breech loading guns in casemate mounts on side, evenly spread, 10 guns in hull casemates - Limited use in heavy seas
8 - 4.53" / 115 mm guns (4x2 guns), 48.50lbs / 22.00kg shells, 1932 Model Dual purpose guns in deck mounts with hoists on side, all amidships
12 - 1.38" / 35.0 mm guns (6x2 guns), 1.32lbs / 0.60kg shells, 1932 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
16 - 0.54" / 13.7 mm guns (4x4 guns), 0.11lbs / 0.05kg shells, 1932 Model Machine guns in deck mounts on side, evenly spread, 2 raised mounts
Weight of broadside 3,102 lbs / 1,407 kg
Shells per gun, main battery: 150
4 - 24.0" / 610 mm above water torpedoes

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 6.00" / 152 mm 261.00 ft / 79.55 m 10.00 ft / 3.05 m
Ends: 4.50" / 114 mm 96.00 ft / 29.26 m 10.00 ft / 3.05 m
Upper: 5.00" / 127 mm 261.00 ft / 79.55 m 8.00 ft / 2.44 m
Main Belt covers 112 % of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 6.10" / 155 mm 4.72" / 120 mm 5.00" / 127 mm
2nd: 4.02" / 102 mm 2.99" / 76 mm 4.02" / 102 mm
3rd: 1.18" / 30 mm 0.59" / 15 mm 0.98" / 25 mm
4th: 0.59" / 15 mm - -
5th: 0.59" / 15 mm - -

Armour deck: 3.94" / 100 mm, Conning tower: 4.75" / 121 mm

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 19,995 shp / 14,916 Kw = 21.22 kts
Range 10,075nm at 15.00 kts
Bunker at max displacement = 2,250 tons

Complement: 443 - 577

Cost: £0.637 million / $2.549 million

Distribution of weights at normal displacement:

Armament: 370 tons, 4.3 %
Armour: 2,969 tons, 34.7 %
- Belts: 1,280 tons, 15.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 493 tons, 5.8 %
- Armour Deck: 1,153 tons, 13.5 %
- Conning Tower: 43 tons, 0.5 %
Machinery: 622 tons, 7.3 %
Hull, fittings & equipment: 2,775 tons, 32.5 %
Fuel, ammunition & stores: 1,709 tons, 20.0 %
Miscellaneous weights: 100 tons, 1.2 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 14,743 lbs / 6,687 Kg = 52.2 x 8.3 " / 210 mm shells or 2.6 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 3.1 ft / 0.9 m
Roll period: 14.8 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.53
Seaboat quality (Average = 1.00): 1.29

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.575
Length to Beam Ratio: 5.76 : 1
'Natural speed' for length: 18.89 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 55
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.80 ft / 6.34 m
- Forecastle (18 %): 17.60 ft / 5.36 m
- Mid (50 %): 17.60 ft / 5.36 m
- Quarterdeck (18 %): 17.60 ft / 5.36 m
- Stern: 17.60 ft / 5.36 m
- Average freeboard: 17.83 ft / 5.43 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 59.7 %
- Above water (accommodation/working, high = better): 100.2 %
Waterplane Area: 15,814 Square feet or 1,469 Square metres
Displacement factor (Displacement / loading): 117 %
Structure weight / hull surface area: 112 lbs/sq ft or 547 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 3.33
- Overall: 1.10
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Misc. weight:
Catapult + floatplane @ 50t
Flag accomodations @ 25t
Climatisation @ 25t


PRS Bugsuk (CE-5), ex-RCN Nisshin, ex-IJN Nisshin, ex-Argentine Moreno, ex-RM Roca, laid down 1902, rebuilt 1928, partial reconstruction 1932, scrapped July 1939

Disposed of some time prior to 1939; available records have not yet disclosed the fate of this vessel

(Historical data)

PRS Calayan, ex-Italian light cruiser, laid down 1913, as refit 1925

Displacement: 4,272 t light; 4,461 t standard; 4,747 t normal; 4,976 t full load

Dimensions: Length overall / water x beam x draught

429.01 ft / 426.51 ft x 42.65 ft x 19.03 ft (normal load) [130.76 m / 130.00 m x 13.00 m x 5.80 m]

Armament:

6 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1913 Model Breech loading guns in deck mounts with hoists on side ends, majority forwards
2 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1913 Model Breech loading guns in casemate mounts on side, all aft
4 - 3.94" / 100 mm guns (2x2 guns), 32.00lbs / 14.51kg shells, 1923 Model Dual purpose guns in deck mounts with hoists on side, all amidships
8 - 2.24" / 57.0 mm guns in single mounts, 6.00lbs / 2.72kg shells, 1923 Model Quick firing guns in casemate mountson side, all amidships
8 guns in hull casemates - Limited use in heavy seas
8 - 0.54" / 13.7 mm guns (4x2 guns), 0.11lbs / 0.05kg shells, 1925 Model Machine guns in deck mountson side ends, evenly spread, all raised mounts
Weight of broadside 1,041 lbs / 472 kg
Shells per gun, main battery: 150

4 - 18.0" / 457.2 mm submerged torpedo tubes

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 189.60 ft / 57.79 m 13.12 ft / 4.00 m
Ends: 2.76" / 70 mm 148.00 ft / 45.11 m 8.20 ft / 2.50 m
88.91 ft / 27.10 m Unarmoured ends
Upper: 0.79" / 20 mm 83.23 ft / 25.37 m 10.79 ft / 3.29 m
Main Belt covers 68 % of normal length
Main belt does not fully cover magazines and engineering spaces

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.57" / 40 mm 0.79" / 20 mm 0.98" / 25 mm
2nd: 1.57" / 40 mm - 0.98" / 25 mm
3rd: 1.18" / 30 mm 0.59" / 15 mm 0.98" / 25 mm
4th: 0.79" / 20 mm - -

Armour deck: 1.18" / 30 mm, Conning tower: 3.94" / 100 mm

Machinery:

Coal and oil fired boilers, steam turbines, Geared drive, 4 shafts, 35,301 shp / 26,334 Kw = 28.00 kts
Range 5,250nm at 10.00 kts (Bunkerage = 515 tons)

Complement: 25 officers and 303 men

Cost: £0.497 million / $1.988 million

Distribution of weights at normal displacement:

Armament: 129 tons, 2.7 %
Armour: 940 tons, 19.8 %
- Belts: 597 tons, 12.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 58 tons, 1.2 %
- Armour Deck: 260 tons, 5.5 %
- Conning Tower: 24 tons, 0.5 %
Machinery: 1,413 tons, 29.8 %
Hull, fittings & equipment: 1,765 tons, 37.2 %
Fuel, ammunition & stores: 475 tons, 10.0 %
Miscellaneous weights: 25 tons, 0.5 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 3,512 lbs / 1,593 Kg = 32.5 x 6.0 " / 152 mm shells or 0.7 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 1.9 ft / 0.6 m
Roll period: 12.8 seconds
Steadiness - As gun platform (Average = 50 %): 57 %
- Recoil effect (Restricted arc if above 1.00): 0.65
Seaboat quality (Average = 1.00): 1.28

Hull form characteristics:

Hull has rise forward of midbreak
Block coefficient: 0.480
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 20.65 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 45
Bow angle (Positive = bow angles forward): -5.00 degrees
Stern overhang: 2.5 ft / 0.76 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19.69 ft / 6.00 m
- Forecastle (12 %): 19.69 ft / 6.00 m
- Mid (70 %): 19.69 ft / 6.00 m (9.84 ft / 3.00 m aft of break)
- Quarterdeck (10 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 16.73 ft / 5.10 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 128.5 %
- Above water (accommodation/working, high = better): 136.5 %
Waterplane Area: 11,905 Square feet or 1,106 Square metres
Displacement factor (Displacement / loading): 98 %
Structure weight / hull surface area: 77 lbs/sq ft or 377 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.27
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

Calayan, ex-Cíudad Rodrigo, ex-RM Cíudad Rodrigo, laid down 1913, refit 1925

(Historical data)

ex-German Gazelle-class Light Cruisers, laid down 1898

Length, 345 ft x Beam, 40.3 ft x Depth, 18.4 ft
3289 tons normal displacement (2941 tons standard)

Main battery: 4 x 3.94-inch / 100mm
Secondary battery: 6 x 3.94-inch / 100mm
QF battery: 8 x 1.57-inch / 40mm
Light battery: 3 x 0.98-inch / 25mm
MG battery: 4 x 0.54-inch / 13.7mm

Weight of broadside: 323 lbs

2 TT, 17.7" (submerged)

Armor deck, average 35mm
C.T., 80mm

Battery armor:
Main, 30mm shields / secondary, 50mm shields
QF, 20mm shields / light guns, 15mm shields

Maximum speed for 10715 ihp = 21.48 knots
Approximate cruising radius, 4700 nm / 10 kts

Typical complement: 217-282


Estimated cost, $1.433 million (£358,000)

Remarks:

Caution: Hull structure is subject to strain in open-sea
conditions.

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

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

Magazines and engineering spaces are cramped, with poor
watertight subdivision.

Cramped ship; poor crew accommodation, limited working space.

Main deck secondary guns subject to being washed down
in a seaway.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 40 tons = 1 pct
Armor, total ..................... 250 tons = 8 pct

Deck 208 tons = 6 pct
C.T. 15 tons = 0 pct
Armament 28 tons = 1 pct

Machinery ........................ 1605 tons = 49 pct
Hull and fittings; equipment ..... 903 tons = 27 pct
Fuel, ammunition, stores ......... 441 tons = 13 pct
Miscellaneous weights ............ 50 tons = 2 pct
-----
3289 tons = 100 pct

Estimated metacentric height, 2.7 ft

Displacement summary:

Light ship: 2848 tons
Standard displacement: 2941 tons
Normal service: 3289 tons
Full load: 3554 tons

Loading submergence 233 tons/foot

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


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.55

Shellfire needed to sink: 1160 lbs = 37.9 x 3.9-inch shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 0.4
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 75 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.10

Relative quality as a seaboat: 1.53

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


Hull form characteristics:

Block coefficient: 0.45
Sharpness coefficient: 0.33
Hull speed coefficient 'M' = 7.09
'Natural speed' for length = 18.6 knots
Power going to wave formation
at top speed: 49 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 178 percent

Relative accommodation and working space: 87 percent


Displacement factor: 81 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.90
(Structure weight per square
foot of hull surface: 60 lbs)

Relative longitudinal hull strength: 1.72
(for 12.1 ft average freeboard)

Relative composite hull strength: 0.96

Ticao, ex-SMS Nymphe, laid down 1898, acq. 1927, to target ship 1928
Taput, ex-SMS Niobe, laid down 1899, refit 1921, acq./rearmed 1927, sold to Bulgaria 1933
Tablas, ex-SMS Thetis, laid down 1901, refit 1920, acq. 1927, SUNK 1928

(Historical data)

ex-German Bremen-class Light Cruiser, laid down 1902

Length, 365 ft x Beam, 43.6 ft x Depth, 18.4 ft
3760 tons normal displacement (3431 tons standard)

Main battery: 2 x 6.10-inch / 155mm (lined to 152mm)
Secondary battery: 6 x 3.94-inch / 100mm
QF battery: 10 x 1.57-inch / 40mm
Light battery: 3 x 0.98-inch / 25mm

Weight of broadside: 431 lbs

2 TT, 17.7" (submerged)

Armor deck, average 35mm
C.T., 100mm

Battery armor:
Main, 50mm shields / secondary, 50mm shields
QF, 20mm shields / light guns, 15mm shields

Maximum speed for 12602 ihp = 22.03 knots
Approximate cruising radius, 4300 nm / 10 kts

Typical complement: 240-312


Estimated cost, $1.665 million (£416,000)

Remarks:

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

Good seaboat; rides out heavy weather easily.

Magazines and engineering spaces are cramped, with poor
watertight subdivision.

Cramped ship; poor crew accommodation, limited working space.

Main deck secondary guns subject to being washed down
in a seaway.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 54 tons = 1 pct
Armor, total ..................... 288 tons = 8 pct

Deck 238 tons = 6 pct
C.T. 20 tons = 1 pct
Armament 30 tons = 1 pct

Machinery ........................ 1820 tons = 48 pct
Hull and fittings; equipment ..... 1138 tons = 30 pct
Fuel, ammunition, stores ......... 439 tons = 12 pct
Miscellaneous weights ............ 20 tons = 1 pct
-----
3760 tons = 100 pct

Estimated metacentric height, 3.2 ft

Displacement summary:

Light ship: 3320 tons
Standard displacement: 3431 tons
Normal service: 3760 tons
Full load: 4007 tons

Loading submergence 266 tons/foot

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


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.60

Shellfire needed to sink: 1426 lbs = 12.6 x 6.1-inch shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 0.4
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 72 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.10

Relative quality as a seaboat: 1.44

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


Hull form characteristics:

Block coefficient: 0.45
Sharpness coefficient: 0.33
Hull speed coefficient 'M' = 7.17
'Natural speed' for length = 19.1 knots
Power going to wave formation
at top speed: 49 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 176 percent

Relative accommodation and working space: 89 percent


Displacement factor: 82 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 1.01
(Structure weight per square
foot of hull surface: 70 lbs)

Relative longitudinal hull strength: 1.72
(for 12.1 ft average freeboard;
freeboard adjustment -0.4 ft)

Relative composite hull strength: 1.06

Tubbataha, ex-SMS Hamburg, laid down 1902, refit 1920, acq./rearmed 1927, sold to Bulgaria 1933

Disposed of some time prior to 1939; available records have not yet disclosed the fate of this vessel

(Historical data)

PRS Coron (ex-HNLMS Amsterdam), light cruiser laid down 1903


Displacement:
3.738 t light; 3.834 t standard; 4.104 t normal; 4.304 t full load
Loading submergence 264 tons/feet

Dimensions:
344,49 ft x 41,83 ft x 19,36 ft (normal load)
105,00 m x 12,75 m x 5,90 m

Armament:
3 - 4,13" / 105 mm guns
4 - 2,95" / 75 mm QF guns
2 - 1,57" / 40 mm guns
Weight of broadside 161 lbs / 73 kg
5 - 18,0" / 457,2 mm above water torpedoes

Armour:
Belt 1,50" / 38 mm, ends unarmoured
Belts cover 200 % of normal area
Main gun shields 1,50" / 38 mm,
Armour deck 0,25" / 6 mm, Conning tower 1,00" / 25 mm

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 17.344 ihp / 12.938 Kw = 23,25 kts
Range 3.500nm at 10,00 kts

Complement:
256 - 333

Cost:
£0,490 million / $1,962 million

Distribution of weights at normal displacement:
Armament: 20 tons, 0,5 %
Armour: 272 tons, 6,6 %
Belts: 218 tons, 5,3 %, Armament: 5 tons, 0,1 %, Armour Deck: 43 tons, 1,0 %
Conning Tower: 6 tons, 0,1 %, Torpedo bulkhead: 0 tons, 0,0 %
Machinery: 2.448 tons, 59,6 %
Hull, fittings & equipment: 999 tons, 24,3 %
Fuel, ammunition & stores: 366 tons, 8,9 %
Miscellaneous weights: 0 tons, 0,0 %

Metacentric height 2,6

Remarks:
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1,45
Shellfire needed to sink: 1.095 lbs / 497 Kg = 31,0 x 4,1 " / 105 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0,4
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 71 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0,04
Relative quality as seaboat: 1,02

Hull form characteristics:
Block coefficient: 0,515
Sharpness coefficient: 0,36
Hull speed coefficient 'M': 6,58
'Natural speed' for length: 18,56 kts
Power going to wave formation at top speed: 57 %
Trim: 70
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 196,2 %
Relative accommodation and working space: 62,3 %
(Average = 100%)
Displacement factor: 73 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0,98
(Structure weight / hull surface area: 63 lbs / square foot or 307 Kg / square metre)
Relative longitudinal hull strength: 1,57
(for 10,99 ft / 3,35 m average freeboard, freeboard adjustment -1,68 ft)
Relative composite hull strength: 1,02


Coron, ex-HNLMS Amsterdam, laid down 1903, acquired 1932

(Historical data)

PRS Fernando, ex-Austrian battleship, laid down 1907

Length, 448 ft x Beam, 80.3 ft x Depth, 26.5 ft
14986 tons normal displacement (14505 tons standard)

Main battery: 4 x 12.00-inch / 305mm (2 x 2)
Secondary battery: 8 x 9.44-inch / 240mm (4 x 2)
QF battery: 20 x 3.94-inch / 100mm (casemates)
Light battery: 8 x 2.24-inch / 57mm (AA)
Fifth battery: 6 x 0.98-inch / 25mm (AA)

Weight of broadside: 8021 lbs

4 TT, 17.7" (submerged)

Main belt, 9.0 inches; bow and stern, 4.0 inches
Upper belt, 6.0 inches
Armor deck, average 1.88 inches
C.T., 9.75 inches

Battery armor:
Main, 9.75" / secondary, 8.0"
QF casemates, 4.75" / light guns, 0.98" shields
Fifth, 0.54" shields

Maximum speed for 18108 ihp = 19.40 knots
Approximate cruising radius, 3000 nm / 10 kts

Typical complement: 43 officers and 731 men


Estimated cost, $6.186 million (£1.547 million)

Remarks:

Relative extent of belt armor, 102 percent of 'typical' coverage.

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

Good seaboat; rides out heavy weather easily.

Main deck QF guns subject to being washed down in a seaway.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 930 tons = 6 pct
Armor, total ..................... 5057 tons = 34 pct

Belt 2153 tons = 14 pct
Deck 839 tons = 6 pct
C.T. 128 tons = 1 pct
Armament 1937 tons = 13 pct

Machinery ........................ 2012 tons = 13 pct
Hull and fittings; equipment ..... 5576 tons = 37 pct
Fuel, ammunition, stores ......... 1408 tons = 9 pct
Miscellaneous weights ............ 4 tons = 0 pct
-----
14986 tons = 100 pct

Estimated metacentric height, 4.0 ft

Displacement summary:

Light ship: 13578 tons
Standard displacement: 14505 tons
Normal service: 14986 tons
Full load: 15312 tons

Loading submergence 689 tons/foot

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


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.06

Shellfire needed to sink: 14133 lbs = 16.4 x 12.0-inch shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 1.9
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 71 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.67

Relative quality as a seaboat: 1.41

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


Hull form characteristics:

Block coefficient: 0.55
Sharpness coefficient: 0.42
Hull speed coefficient 'M' = 5.56
'Natural speed' for length = 21.2 knots
Power going to wave formation
at top speed: 47 percent


Estimated hull characteristics and strength:

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

Relative accommodation and working space: 112 percent


Displacement factor: 90 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.93
(Structure weight per square
foot of hull surface: 158 lbs)

Relative longitudinal hull strength: 2.09
(for 16.5 ft average freeboard;
freeboard adjustment +0.1 ft)

Relative composite hull strength: 1.00

Fernando, ex-SMKuKS Erzherzog Franz Ferdinand, laid down 1907, refit 1925

(Historical data)

Filipino Ajo-class torpedo boat, laid down 1922

Displacement: 600 t light; 615 t standard; 694 t normal; 758 t full load

Dimensions: Length overall / water x beam x draught

237.76 ft / 235.00 ft x 23.50 ft x 11.00 ft (normal load) [72.47 m / 71.63 m x 7.16 m x 3.35 m]

Armament:

1 - 3.00" / 76.2 mm guns in single mounts, 14.00lbs / 6.35kg shells, 1922 Model Quick firing gun in a deck mount with a hoist on centreline forward
2 - 1.57" / 40.0 mm guns (1x2 guns), 2.00lbs / 0.91kg shells, 1918 Model Anti-aircraft guns in a deck mount on centreline aft
2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1922 Model Machine guns in deck mounts on side, all amidships, all raised mounts - superfiring
Weight of broadside 18 lbs / 8 kg
Shells per gun, main battery: 150
8 - 18.0" / 457.2 mm above water torpedoes

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -
2nd: 0.50" / 13 mm - -

Machinery:

Oil fired boilers, steam turbines, Geared drive, 2 shafts, 10,403 shp / 7,760 Kw = 26.25 kts
Range 1,030nm at 21.00 kts (Bunkerage = 142 tons)

Complement: 9 officers and 68 men

Cost: £0.192 million / $0.768 million

Distribution of weights at normal displacement:

Armament: 2 tons, 0.3 %
Armour: 2 tons, 0.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 2 tons, 0.3 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 340 tons, 49.0 %
Hull, fittings & equipment: 256 tons, 36.8 %
Fuel, ammunition & stores: 95 tons, 13.6 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 316 lbs / 143 Kg = 23.4 x 3.0 " / 76 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 0.7 ft / 0.2 m
Roll period: 11.6 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0.08
Seaboat quality (Average = 1.00): 1.06

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.400
Length to Beam Ratio: 10.00: 1
'Natural speed' for length: 15.33 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 53
Bow angle (Positive = bow angles forward): 12.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 13.00 ft / 3.96 m
- Forecastle (20 %): 10.00 ft / 3.05 m
- Mid (50 %): 10.00 ft / 3.05 m
- Quarterdeck (15 %): 10.00 ft / 3.05 m
- Stern: 10.00 ft / 3.05 m
- Average freeboard: 10.24 ft / 3.12 m
Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 160.8 %
- Above water (accommodation/working, high = better): 26.2 %
Waterplane Area: 3,399 Square feet or 316 Square metres
Displacement factor (Displacement / loading): 96 %
Structure weight / hull surface area: 35 lbs/sq ft or 172 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.80
- Longitudinal: 3.33
- Overall: 0.92
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is extremely poor


R-1, laid down 1922, to Yugoslavia 1924
R-2, laid down 1922, to Yugoslavia 1924
R-3, laid down 1922, to Yugoslavia 1924
Ajo, laid down 1922 (expended at some point, name having been reused for an Aquila class DD)
Escabiosa, laid down 1922 (expended at some point, no longer in order of battle)
R-6, laid down 1922, CTL+scrapped 1924
Cardo, laid down 1922 (expended at some point, name having been reused for an Aquila class DD)
Siemperviva, laid down 1922, to Pacifica 1927
Mentha, laid down 1923, to Pacifica 1927
R-10, laid down 1923, sunk 1924

(Historical data)

Tiburón, Filipino submarine, laid down 1924

Length, 225 ft x Beam, 20.0 ft x Depth, 12.5 ft
804 tons normal displacement (711 tons standard)

Main battery: 1 x 3.94-inch / 100mm
Light battery: 1 x 0.30-inch / 7.62mm

Weight of broadside: 30 lbs

6 TT, 21.0" (four bow, two stern)

Operational diving depth: 187 feet
Emergency diving depth: 299 feet
Crush depth: 467 feet

Maximum speed for 1318 shp = 15.00 knots
Approximate cruising radius, 7500 nm / 10 kts

Typical complement: 7 officers and 31 men

Estimated cost, $413,000 (£103,000)

Remarks:

Magazines and engineering spaces are cramped, with poor watertight subdivision.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 4 tons = 0 pct
Machinery ........................ 43 tons = 5 pct
Hull and fittings; equipment ..... 455 tons = 57 pct
Fuel, ammunition, stores ......... 112 tons = 14 pct
Miscellaneous weights ............ 190 tons = 24 pct
-----
804 tons = 100 pct

Estimated metacentric height, 0.5 ft

Displacement summary:

Light ship: 692 tons
Standard displacement: 711 tons
Normal service: 804 tons
Full load: 875 tons

Loading submergence 81 tons/foot

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.01

Shellfire needed to sink: 300 lbs = 10.1 x 3.9-inch shells
(Approximates weight of penetrating shell hits needed to sink ship, not counting critical hits)

Torpedoes needed to sink: 0.1
(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' = 7.39
'Natural speed' for length = 15.0 knots
Power going to wave formation
at top speed: 38 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 116 percent

Relative accommodation and working space: 1 percent

Displacement factor: 262 percent
(Displacement relative to loading factors)

Relative cross-sectional hull strength: 3.69
(Structure weight per square foot of hull surface: 103 lbs)

Relative longitudinal hull strength: 1.50
(for 0.1 ft average freeboard; freeboard adjustment -9.0 ft)

Relative composite hull strength: 1.87


Tiburón, laid down 1924, lost 1931

(Historical data)

Filipino Págalo-class destroyer minesweeper (ex-Australian Thorneycroft 'R' rebuild) laid down 1916 (Engine 1932)

Displacement: 917 t light; 944 t standard; 1,054 t normal; 1,143 t full load

Dimensions: Length overall / water x beam x draught

279.61 ft / 274.25 ft x 27.00 ft x 11.00 ft (normal load) [85.22 m / 83.59 m x 8.23 m x 3.35 m]

Armament:

2 - 2.95" / 75.0 mm guns (1x2 guns), 13.00lbs / 5.90kg shells, 1932 Model Dual purpose guns in a deck mount with hoist on centreline forward
4 - 1.38" / 35.0 mm guns (2x2 guns), 1.32lbs / 0.60kg shells, 1932 Model Anti-aircraft guns in deck mounts on centreline, all amidships, all raised mounts - superfiring
8 - 0.54" / 13.7 mm guns (4x2 guns), 0.11lbs / 0.05kg shells, 1932 Model Machine guns in deck mounts on side, evenly spread, 2 raised mounts
Weight of broadside 32 lbs / 15 kg
Shells per gun, main battery: 250
4 - 18.0" / 457.2 mm above water torpedoes

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.18" / 30 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm - -

Machinery:

Oil fired boilers, steam turbines, Geared drive, 2 shafts, 28,265 shp / 21,086 Kw = 33.00 kts
Range 3,500nm at 15.00 kts
Bunker at max displacement = 199 tons

Complement: 92 - 120

Cost: £0.185 million / $0.739 million

Distribution of weights at normal displacement:

Armament: 4 tons, 0.4 %
Armour: 3 tons, 0.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 0.3 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 554 tons, 52.5 %
Hull, fittings & equipment: 287 tons, 27.2 %
Fuel, ammunition & stores: 137 tons, 13.0 %
Miscellaneous weights: 70 tons, 6.6 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 271 lbs / 123 Kg = 21.1 x 3.0 " / 75 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 1.0 ft / 0.3 m
Roll period: 11.6 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.10
Seaboat quality (Average = 1.00): 0.77

Hull form characteristics:

Hull has raised forecastle and transom stern
Block coefficient: 0.453
Length to Beam Ratio: 10.16 : 1
'Natural speed' for length: 18.99 kts
Power going to wave formation at top speed: 73 %
Trim (Max stability = 0, Max steadiness = 100): 65
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: 20.00 ft / 6.10 m
- Forecastle (20 %): 15.00 ft / 4.57 m (12.00 ft / 3.66 m aft of break)
- Mid (50 %): 12.00 ft / 3.66 m
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 13.00 ft / 3.96 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 179.9 %
- Above water (accommodation/working, high = better): 88.8 %
Waterplane Area: 4,919 Square feet or 457 Square metres
Displacement factor (Displacement / loading): 59 %
Structure weight / hull surface area: 27 lbs/sq ft or 133 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.68
- Overall: 0.59
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather


Págalo, ex-HMAS Teazer, laid down 1915, converted to DM 1932; Scrapped
Gavión, ex-HMAS Retriever, laid down 1916, converted to DM 1932; Scrapped
Charrán, ex-HMAS Rosalind, laid down 1915, converted to DM 1932-33; Scrapped
Fumarel, ex-HMAS Taurus, laid down 1916, converted to DM 1932-33; Scrapped

This vessel was sold to Chile for delivery in January 1942.

Pacifica, Filipino Polar Exploration Ship, laid down 1928

Displacement: 8,232 t light; 8,474 t standard; 10,766 t normal; 12,600 t full load

Dimensions: Length overall / water x beam x draught

498.69 ft / 498.69 ft x 88.58 ft x 13.12 ft (normal load) [152.00 m / 152.00 m x 27.00 m x 4.00 m]

Armament:

2 - 6.00" / 152 mm guns (1x2 guns), 108.00lbs / 48.99kg shells, 1919 Model Breech loading guns in a turret (on a barbette) on centreline aft
2 - 3.94" / 100 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1923 Model Quick firing guns in deck mounts with hoists on side, all forward
6 - 2.24" / 57.0 mm guns in single mounts, 6.00lbs / 2.72kg shells, 1923 Model Quick firing guns in deck mounts on side, evenly spread
3 - 0.98" / 25.0 mm guns (1x3 guns), 0.57lbs / 0.26kg shells, 1925 Model Anti-aircraft guns in deck mount on side aft, all raised guns
8 - 0.54" / 13.7 mm guns (2x4 guns), 0.11lbs / 0.05kg shells, 1928 Model Anti-aircraft guns in deck mounts on side, all amidships, all raised mounts - superfiring
Weight of broadside 319 lbs / 145 kg
Shells per gun, main battery: 135

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 2.95" / 75 mm 328.08 ft / 100.00 m 11.48 ft / 3.50 m
Ends: 3.94" / 100 mm 170.60 ft / 52.00 m 11.48 ft / 3.50 m
Main Belt covers 101 % of normal length

Torpedo Bulkhead: 1.97" / 50 mm 498.69 ft / 152.00 m 12.30 ft / 3.75 m

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.00" / 102 mm 2.00" / 51 mm 1.97" / 50 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm
3rd: 0.98" / 25 mm 0.59" / 15 mm -
4th: 0.59" / 15 mm - -
5th: 0.59" / 15 mm - -

Conning tower: 3.15" / 80 mm

Machinery:

Diesel Internal combustion generators, Electric motors, 4 shafts, 18,000 shp / 13,428 Kw = 19.95 kts
Range 15,000nm at 15.00 kts (Bunkerage = 4,126 tons)

Complement: 528 - 687

Cost: £1.525 million / $6.101 million

Distribution of weights at normal displacement:

Armament: 39 tons, 0.4 %
Armour: 1,312 tons, 12.2 %
- Belts: 780 tons, 7.2 %
- Torpedo bulkhead: 447 tons, 4.2 %
- Armament: 52 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 33 tons, 0.3 %
Machinery: 560 tons, 5.2 %
Hull, fittings & equipment: 5,321 tons, 49.4 %
Fuel, ammunition & stores: 2,534 tons, 23.5 %
Miscellaneous weights: 1,000 tons, 9.3 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 40,862 lbs / 18,535 Kg = 378.4 x 6.0 " / 152 mm shells or 10.6 torpedoes
Stability (Unstable if below 1.00): 1.52
Metacentric height 8.5 ft / 2.6 m
Roll period: 12.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.02
Seaboat quality (Average = 1.00): 1.29

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.650
Length to Beam Ratio: 5.63 : 1
'Natural speed' for length: 22.33 kts
Power going to wave formation at top speed: 43 %
Trim (Max stability = 0, Max steadiness = 100): 54
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: -6.56 ft / -2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.43 ft / 7.75 m
- Forecastle (20 %): 17.22 ft / 5.25 m
- Mid (50 %): 16.40 ft / 5.00 m
- Quarterdeck (15 %): 16.40 ft / 5.00 m
- Stern: 16.40 ft / 5.00 m
- Average freeboard: 17.35 ft / 5.29 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 40.5 %
- Above water (accommodation/working, high = better): 202.6 %
Waterplane Area: 33,841 Square feet or 3,144 Square metres
Displacement factor (Displacement / loading): 287 %
Structure weight / hull surface area: 131 lbs/sq ft or 640 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.44
- Longitudinal: 1.45
- Overall: 1.44
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

25t for flag facilities
50t for winterisation
175t for 6 aircraft + one catapult
750t for scientific crew + equipment

Filipino Rabihorcado-class destroyer, laid down 1923

Displacement:
1,411 t light; 1,451 t standard; 1,574 t normal; 1,673 t full load

Dimensions: Length overall / water x beam x draught
309.64 ft / 300.00 ft x 32.00 ft x 14.00 ft (normal load)
94.38 m / 91.44 m x 9.75 m x 4.27 m

Armament:
2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model
Quick firing guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 2.24" / 57.0 mm guns (2x2 guns), 6.00lbs / 2.72kg shells, 1923 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts - superfiring
3 - 0.98" / 25.0 mm guns in single mounts, 0.57lbs / 0.26kg shells, 1918 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1923 Model
Machine guns in deck mounts
on side, all amidships, all raised mounts - superfiring
2 - 0.30" / 7.62 mm guns in single mounts, 0.01lbs / 0.01kg shells, 1914 Model
Machine guns in deck mounts
on side, all aft, all raised mounts - superfiring

Weight of broadside 90 lbs / 41 kg
Shells per gun, main battery: 150

4 - 18.0" / 457.2 mm above water torpedoes

Depth charges @ 550lb each: 35

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm 0.50" / 13 mm 1.00" / 25 mm
2nd: 0.50" / 13 mm - -
3rd: 0.25" / 6 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 39,975 shp / 29,821 Kw = 32.76 kts
Range 4,375nm at 12.00 kts (Bunkerage = 222 tons)

Complement:
18 officers and 125 men

Cost:
£0.539 million / $2.155 million

Distribution of weights at normal displacement:
Armament: 11 tons, 0.7 %
Armour: 12 tons, 0.8 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 12 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 904 tons, 57.4 %
Hull, fittings & equipment: 472 tons, 30.0 %
Fuel, ammunition & stores: 164 tons, 10.4 %
Miscellaneous weights: 12 tons, 0.8 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
382 lbs / 173 Kg = 11.9 x 4.0 " / 102 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 1.3 ft / 0.4 m
Roll period: 11.7 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.23
Seaboat quality (Average = 1.00): 1.07

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.410
Length to Beam Ratio: 9.38 : 1
'Natural speed' for length: 17.32 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 67
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 2.00 ft / 0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.00 ft / 6.40 m
- Forecastle (20 %): 16.30 ft / 4.97 m
- Mid (50 %): 15.00 ft / 4.57 m
- Quarterdeck (15 %): 15.00 ft / 4.57 m
- Stern: 15.00 ft / 4.57 m
- Average freeboard: 15.83 ft / 4.83 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 191.5 %
- Above water (accommodation/working, high = better): 110.3 %
Waterplane Area: 5,945 Square feet or 552 Square metres
Displacement factor (Displacement / loading): 57 %
Structure weight / hull surface area: 34 lbs/sq ft or 166 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 3.75
- Overall: 0.61
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

Rabihorcado, laid down 1923, converted to DM 1931
Alcatraz, laid down 1923, SUNK 1928
Pelícano, laid down 1923, converted to DM 1931
Águila, laid down 1924, SUNK 1929
Zampullín, laid down 1924, SUNK 1928
Rabijunco, laid down 1924, SUNK 1929
Cormorán, laid down 1924, converted to DM 1931
Martinete, laid down 1925 – fate uncertain
Cigüeña, cancelled