WesWorld

Patagonia Class
ARA Patagonia,
[ARA Pampas sunk 15/06/1935]

Battlecruiser laid down 1928
(sim by Red Admiral)

Displacement:
24,887 t light; 26,088 t standard; 27,586 t normal; 28,785 t full load

Dimensions: Length overall / water x beam x draught
737.60 ft / 721.78 ft x 87.60 ft x 28.54 ft (normal load)
224.82 m / 220.00 m x 26.70 m x 8.70 m

Armament:
8 - 12.01" / 305 mm guns (4x2 guns), 996.49lbs / 452.00kg shells, 1928 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
18 - 5.98" / 152 mm guns (6x3 guns), 110.23lbs / 50.00kg shells, 1928 Model
Breech loading guns in turrets (on barbettes)
on side, all forward
8 - 3.94" / 100 mm guns (4x2 guns), 30.42lbs / 13.80kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on side, all forward
12 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 10,218 lbs / 4,635 kg
Shells per gun, main battery: 110

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 10.6" / 270 mm 469.16 ft / 143.00 m 11.48 ft / 3.50 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

- Torpedo Bulkhead:
1.18" / 30 mm 469.16 ft / 143.00 m 22.97 ft / 7.00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.6" / 270 mm 7.09" / 180 mm 9.84" / 250 mm
2nd: 3.94" / 100 mm 1.97" / 50 mm 2.76" / 70 mm
3rd: 0.79" / 20 mm - -
4th: 0.39" / 10 mm - -

- Armour deck: 25mm forwards, 90mm over machinery, 120mm over magazines, 90mm over steering gear, Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 116,000 shp / 86,536 Kw = 31.00 kts
Range 10,000nm at 12.00 kts
Bunker at max displacement = 2,696 tons

Complement:
1,069 - 1,391

Cost:
£8.911 million / $35.646 million

Distribution of weights at normal displacement:
Armament: 1,140 tons, 4.1 %
Armour: 8,424 tons, 30.5 %
- Belts: 2,431 tons, 8.8 %
- Torpedo bulkhead: 471 tons, 1.7 %
- Armament: 2,405 tons, 8.7 %
- Armour Deck: 3,063 tons, 11.1 %
- Conning Tower: 54 tons, 0.2 %
Machinery: 3,611 tons, 13.1 %
Hull, fittings & equipment: 11,662 tons, 42.3 %
Fuel, ammunition & stores: 2,699 tons, 9.8 %
Miscellaneous weights: 50 tons, 0.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
41,520 lbs / 18,833 Kg = 48.0 x 12.0 " / 305 mm shells or 5.5 torpedoes
Stability (Unstable if below 1.00): 1.05
Metacentric height 4.5 ft / 1.4 m
Roll period: 17.3 seconds
Steadiness - As gun platform (Average = 50 %): 59 %
- Recoil effect (Restricted arc if above 1.00): 0.91
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.535
Length to Beam Ratio: 8.24 : 1
'Natural speed' for length: 31.01 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 49
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: 34.45 ft / 10.50 m
- Forecastle (20 %): 27.89 ft / 8.50 m
- Mid (70 %): 27.89 ft / 8.50 m (18.04 ft / 5.50 m aft of break)
- Quarterdeck (15 %): 18.04 ft / 5.50 m
- Stern: 18.04 ft / 5.50 m
- Average freeboard: 25.46 ft / 7.76 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 96.8 %
- Above water (accommodation/working, high = better): 206.7 %
Waterplane Area: 45,283 Square feet or 4,207 Square metres
Displacement factor (Displacement / loading): 111 %
Structure weight / hull surface area: 173 lbs/sq ft or 845 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.54
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

****

1946 Refit
Patagonia, Argentina/ Italy Battlecruiser laid down 1928

Displacement:
24,882 t light; 26,088 t standard; 27,586 t normal; 28,785 t full load

Dimensions: Length overall / water x beam x draught
737.60 ft / 721.78 ft x 87.60 ft x 28.54 ft (normal load)
224.82 m / 220.00 m x 26.70 m x 8.70 m

Armament:
8 - 12.01" / 305 mm guns (4x2 guns), 996.49lbs / 452.00kg shells, 1928 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
18 - 5.98" / 152 mm guns (6x3 guns), 110.23lbs / 50.00kg shells, 1928 Model
Breech loading guns in turrets (on barbettes)
on side, evenly spread
8 - 3.94" / 100 mm guns (4x2 guns), 30.42lbs / 13.80kg shells, 1928 Model
Dual purpose guns in deck mounts
on side, all forward
16 - 2.17" / 55.0 mm guns (8x2 guns), 5.08lbs / 2.30kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 4 raised mounts
12 - 0.79" / 20.0 mm guns (6x2 guns), 0.24lbs / 0.11kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 4 raised mounts
Weight of broadside 10,284 lbs / 4,665 kg
Shells per gun, main battery: 110

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 10.6" / 270 mm 469.16 ft / 143.00 m 11.48 ft / 3.50 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

- Torpedo Bulkhead:
1.18" / 30 mm 469.16 ft / 143.00 m 22.97 ft / 7.00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.6" / 270 mm 7.09" / 180 mm 9.84" / 250 mm
2nd: 3.94" / 100 mm 1.97" / 50 mm 2.76" / 70 mm
3rd: 0.98" / 25 mm 0.59" / 15 mm -
4th: 0.59" / 15 mm 0.20" / 5 mm -
5th: 0.39" / 10 mm - -

- Armour deck: 3.66" / 93 mm, Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 116,000 shp / 86,536 Kw = 31.00 kts
Range 10,000nm at 12.00 kts
Bunker at max displacement = 2,696 tons

Complement:
1,069 - 1,391

Cost:
£8.937 million / $35.748 million

Distribution of weights at normal displacement:
Armament: 1,148 tons, 4.2 %
Armour: 8,415 tons, 30.5 %
- Belts: 2,431 tons, 8.8 %
- Torpedo bulkhead: 471 tons, 1.7 %
- Armament: 2,395 tons, 8.7 %
- Armour Deck: 3,063 tons, 11.1 %
- Conning Tower: 54 tons, 0.2 %
Machinery: 3,611 tons, 13.1 %
Hull, fittings & equipment: 11,648 tons, 42.2 %
Fuel, ammunition & stores: 2,705 tons, 9.8 %
Miscellaneous weights: 60 tons, 0.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
41,326 lbs / 18,745 Kg = 47.7 x 12.0 " / 305 mm shells or 5.4 torpedoes
Stability (Unstable if below 1.00): 1.05
Metacentric height 4.5 ft / 1.4 m
Roll period: 17.3 seconds
Steadiness - As gun platform (Average = 50 %): 59 %
- Recoil effect (Restricted arc if above 1.00): 0.92
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.535
Length to Beam Ratio: 8.24 : 1
'Natural speed' for length: 31.01 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 49
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: 34.45 ft / 10.50 m
- Forecastle (20 %): 27.89 ft / 8.50 m
- Mid (70 %): 27.89 ft / 8.50 m (18.04 ft / 5.50 m aft of break)
- Quarterdeck (15 %): 18.04 ft / 5.50 m
- Stern: 18.04 ft / 5.50 m
- Average freeboard: 25.46 ft / 7.76 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 97.2 %
- Above water (accommodation/working, high = better): 206.7 %
Waterplane Area: 45,283 Square feet or 4,207 Square metres
Displacement factor (Displacement / loading): 111 %
Structure weight / hull surface area: 173 lbs/sq ft or 844 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.54
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Note: Deck armour weight simulates the following; 25mm forwards, 90mm over machinery, 120mm over magazines, 90mm over steering gear

Refit Changes
New shields to 100mm gun mounts
New twin 55mm mounts replacing 37mm singles on forward superstructure, quarterdeck and upper deck
Twin 20mm mounts added (2x2 on bridge structure, 2x2 near mainmast and 1x2 each on B and X turret)
One Surface Search and one Gunnery Radio-Location set added
Four new model secondary directors fitted
New catapult fitted (one catapult removed to save weight)

ARA Veinticinco de Mayo (comissioned 1941)
ARA Constelación (commissioned 1942)

Project 117A4, Argentine Battlecruiser laid down 1937

Displacement:
35,790 t light; 37,620 t standard; 40,319 t normal; 42,479 t full load

Dimensions: Length overall / water x beam x draught
811.52 ft / 787.40 ft x 91.86 ft (Bulges 98.43 ft) x 32.81 ft (normal load)
247.35 m / 240.00 m x 28.00 m (Bulges 30.00 m) x 10.00 m

Armament:
9 - 13.78" / 350 mm guns (3x3 guns), 1,543.24lbs / 700.00kg shells, 1937 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
20 - 4.53" / 115 mm guns (10x2 guns), 55.12lbs / 25.00kg shells, 1937 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread, 4 raised mounts
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread, all raised mounts - superfiring
32 - 1.46" / 37.0 mm guns (16x2 guns), 1.55lbs / 0.70kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 8 raised mounts
32 - 0.79" / 20.0 mm guns (8x4 guns), 0.24lbs / 0.11kg shells, 1937 Model
Machine guns in deck mounts
on side, evenly spread, 4 raised mounts
Weight of broadside 15,055 lbs / 6,829 kg
Shells per gun, main battery: 120

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14.6" / 370 mm 492.13 ft / 150.00 m 13.12 ft / 4.00 m
Ends: Unarmoured
Upper: 1.97" / 50 mm 492.13 ft / 150.00 m 1.64 ft / 0.50 m
Main Belt covers 96 % of normal length

- Torpedo Bulkhead and Bulges:
2.36" / 60 mm 492.13 ft / 150.00 m 29.27 ft / 8.92 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.0" / 380 mm 6.69" / 170 mm 15.0" / 380 mm
2nd: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
3rd: 0.79" / 20 mm 0.39" / 10 mm -
4th: 0.79" / 20 mm 0.39" / 10 mm -
5th: 0.39" / 10 mm - -

- Armour deck: 4.72" / 120 mm, Conning tower: 9.45" / 240 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 162,445 shp / 121,184 Kw = 32.00 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 4,859 tons

Complement:
1,422 - 1,849

Cost:
£17.582 million / $70.328 million

Distribution of weights at normal displacement:
Armament: 1,596 tons, 4.0 %
Armour: 13,503 tons, 33.5 %
- Belts: 4,077 tons, 10.1 %
- Torpedo bulkhead: 1,259 tons, 3.1 %
- Armament: 3,312 tons, 8.2 %
- Armour Deck: 4,616 tons, 11.4 %
- Conning Tower: 239 tons, 0.6 %
Machinery: 4,502 tons, 11.2 %
Hull, fittings & equipment: 16,000 tons, 39.7 %
Fuel, ammunition & stores: 4,529 tons, 11.2 %
Miscellaneous weights: 190 tons, 0.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
62,120 lbs / 28,177 Kg = 47.5 x 13.8 " / 350 mm shells or 9.3 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 5.3 ft / 1.6 m
Roll period: 18.0 seconds
Steadiness - As gun platform (Average = 50 %): 53 %
- Recoil effect (Restricted arc if above 1.00): 0.80
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.555
Length to Beam Ratio: 8.00 : 1
'Natural speed' for length: 32.40 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 44
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 36.09 ft / 11.00 m
- Forecastle (20 %): 26.90 ft / 8.20 m
- Mid (50 %): 26.90 ft / 8.20 m
- Quarterdeck (15 %): 26.90 ft / 8.20 m
- Stern: 26.90 ft / 8.20 m
- Average freeboard: 27.64 ft / 8.42 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 86.8 %
- Above water (accommodation/working, high = better): 190.3 %
Waterplane Area: 52,808 Square feet or 4,906 Square metres
Displacement factor (Displacement / loading): 114 %
Structure weight / hull surface area: 196 lbs/sq ft or 955 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.59
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

Main belt consists of a 50mm decapping plate backed by the 320mm main belt. Upper belt is an extension of the decapping plate.

190 tons reserved for aircraft, radar, and growth.

ARA Pampas (ex-Philippine Presidente Aguinaldo0, Philippines Battlecruiser laid down 1938 (Engine 1947)

Displacement:
25,091 t light; 26,377 t standard; 28,277 t normal; 29,796 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), 996.49lbs / 452.00kg shells, 1938 Model
Breech loading guns in a turret (on a barbette)
on centreline forward
4 - 12.60" / 320 mm guns (2x2 guns), 996.49lbs / 452.00kg shells, 1938 Model
Breech loading guns in turrets (on barbettes)
on centreline, all aft, 1 raised mount - superfiring
16 - 5.04" / 128 mm guns (8x2 guns), 63.99lbs / 29.03kg shells, 1945 Model
Automatic rapid fire guns in deck mounts with hoists
on side ends, evenly spread
16 - 2.17" / 55.0 mm guns (8x2 guns), 5.08lbs / 2.30kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
16 - 0.79" / 20.0 mm guns (4x4 guns), 0.24lbs / 0.11kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 8,084 lbs / 3,667 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: 0.98" / 25 mm 0.79" / 20 mm 0.79" / 20 mm
4th: 0.59" / 15 mm 0.39" / 10 mm -
5th: 0.39" / 10 mm - -

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

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 133,000 shp / 99,218 Kw = 32.01 kts
Range 15,000nm at 12.00 kts
Bunker at max displacement = 3,420 tons

Complement:
1,089 - 1,417

Cost:
£12.462 million / $49.847 million

Distribution of weights at normal displacement:
Armament: 1,039 tons, 3.7 %
Armour: 9,245 tons, 32.7 %
- Belts: 2,958 tons, 10.5 %
- Torpedo bulkhead: 722 tons, 2.6 %
- Armament: 1,548 tons, 5.5 %
- Armour Deck: 3,796 tons, 13.4 %
- Conning Tower: 220 tons, 0.8 %
Machinery: 3,286 tons, 11.6 %
Hull, fittings & equipment: 11,251 tons, 39.8 %
Fuel, ammunition & stores: 3,186 tons, 11.3 %
Miscellaneous weights: 270 tons, 1.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
42,849 lbs / 19,436 Kg = 42.9 x 12.6 " / 320 mm shells or 6.7 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 4.6 ft / 1.4 m
Roll period: 17.9 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.48
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): 90.6 %
- Above water (accommodation/working, high = better): 161.3 %
Waterplane Area: 43,427 Square feet or 4,035 Square metres
Displacement factor (Displacement / loading): 116 %
Structure weight / hull surface area: 171 lbs/sq ft or 834 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.00
- Longitudinal: 1.24
- Overall: 1.02
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Refit Notes
320mm guns re-lined to 305mm bore
Replacement of 115mm DP twins with 128mm automatic DP twin mounts
Replacement of 35mm quadruple mounts fitted with 55mm twin mounts
Addition of four 20mm quadruple mounts
Addition of surface-search RDF set
Addition of two gunnery fire-control RDF sets
Modernisation of fire-control equipment
Replacement of boilers and turbines
Refurbishment of internal fittings for life extension