WesWorld

Mendoza Class
ARA Mendoza
ARA Rioja
ARA Murature
ARA Jujuy
ARA Hercules
[ARA La Plata and ARA Cordoba both war losses]

Destroyer laid down 1931

Displacement:
1,762 t light; 1,877 t standard; 2,030 t normal; 2,152 t full load

Dimensions: Length overall / water x beam x draught
369.19 ft / 361.55 ft x 33.79 ft x 13.78 ft (normal load)
112.53 m / 110.20 m x 10.30 m x 4.20 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 70.55lbs / 32.00kg shells, 1931 Model
Breech loading guns in deck mounts with hoists
on centreline, evenly spread, 2 raised mounts
Aft Main mounts separated by engine room
8 - 1.46" / 37.0 mm guns (2x4 guns), 1.55lbs / 0.70kg shells, 1931 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
6 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1931 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 437 lbs / 198 kg
Shells per gun, main battery: 300
6 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm

- Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 40,800 shp / 30,437 Kw = 34.02 kts
Range 3,200nm at 15.00 kts
Bunker at max displacement = 275 tons

Complement:
150 - 196

Cost:
£1.061 million / $4.243 million

Distribution of weights at normal displacement:
Armament: 52 tons, 2.6 %
Armour: 36 tons, 1.8 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 26 tons, 1.3 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 10 tons, 0.5 %
Machinery: 984 tons, 48.5 %
Hull, fittings & equipment: 666 tons, 32.8 %
Fuel, ammunition & stores: 268 tons, 13.2 %
Miscellaneous weights: 24 tons, 1.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
547 lbs / 248 Kg = 8.2 x 5.1 " / 130 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 1.4 ft / 0.4 m
Roll period: 12.0 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.86
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.422
Length to Beam Ratio: 10.70 : 1
'Natural speed' for length: 21.80 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 51
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.00 ft / 6.40 m
- Forecastle (20 %): 20.34 ft / 6.20 m
- Mid (52 %): 20.34 ft / 6.20 m (10.50 ft / 3.20 m aft of break)
- Quarterdeck (15 %): 10.50 ft / 3.20 m
- Stern: 10.50 ft / 3.20 m
- Average freeboard: 15.67 ft / 4.78 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 179.4 %
- Above water (accommodation/working, high = better): 102.1 %
Waterplane Area: 7,919 Square feet or 736 Square metres
Displacement factor (Displacement / loading): 70 %
Structure weight / hull surface area: 40 lbs/sq ft or 195 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.32
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate


***
1943 Refit

Mendoza Class, Argentina Destroyer laid down 1931

Displacement:
1,761 t light; 1,877 t standard; 2,030 t normal; 2,152 t full load

Dimensions: Length overall / water x beam x draught
369.19 ft / 361.55 ft x 33.79 ft x 13.78 ft (normal load)
112.53 m / 110.20 m x 10.30 m x 4.20 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 70.55lbs / 32.00kg shells, 1931 Model
Breech loading guns in deck mounts with hoists
on centreline, evenly spread, 2 raised mounts
Aft Main mounts separated by engine room
10 - 1.46" / 37.0 mm guns (5x2 guns), 1.55lbs / 0.70kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 4 raised mounts
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1931 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 440 lbs / 199 kg
Shells per gun, main battery: 300
6 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
2nd: 0.98" / 25 mm - -

- Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 40,800 shp / 30,437 Kw = 34.02 kts
Range 3,200nm at 15.00 kts
Bunker at max displacement = 275 tons

Complement:
150 - 196

Cost:
£1.061 million / $4.245 million

Distribution of weights at normal displacement:
Armament: 52 tons, 2.6 %
Armour: 38 tons, 1.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 29 tons, 1.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 10 tons, 0.5 %
Machinery: 983 tons, 48.4 %
Hull, fittings & equipment: 664 tons, 32.7 %
Fuel, ammunition & stores: 269 tons, 13.2 %
Miscellaneous weights: 24 tons, 1.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
546 lbs / 248 Kg = 8.1 x 5.1 " / 130 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 1.4 ft / 0.4 m
Roll period: 12.0 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.85
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.422
Length to Beam Ratio: 10.70 : 1
'Natural speed' for length: 21.80 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 51
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.00 ft / 6.40 m
- Forecastle (20 %): 20.34 ft / 6.20 m
- Mid (52 %): 20.34 ft / 6.20 m (10.50 ft / 3.20 m aft of break)
- Quarterdeck (15 %): 10.50 ft / 3.20 m
- Stern: 10.50 ft / 3.20 m
- Average freeboard: 15.67 ft / 4.78 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 179.4 %
- Above water (accommodation/working, high = better): 102.1 %
Waterplane Area: 7,919 Square feet or 736 Square metres
Displacement factor (Displacement / loading): 69 %
Structure weight / hull surface area: 40 lbs/sq ft or 195 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.31
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate

25% Refit Notes
Replacement of qaurterdeck 20mm singles with one 37mm twin
Addition of RDF set
Addition of Asdic set
New HACS IV
Refurbishment of internal fittings


****

ARA Sarandi
[ARA Heroina sunk 13/7/1935]

Italian Esploratore laid down 1931 Laid down 1st April, 1931. Launched 19th August 31. Completed 18th March 1932.
Sim by Red Admiral

Displacement:
2,746 t light; 2,896 t standard; 3,324 t normal; 3,666 t full load

Dimensions: Length overall / water x beam x draught
453.96 ft / 442.91 ft x 40.03 ft x 16.40 ft (normal load)
138.37 m / 135.00 m x 12.20 m x 5.00 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 79.37lbs / 36.00kg shells, 1931 Model
Breech loading guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.83lbs / 0.83kg shells, 1931 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 491 lbs / 223 kg
Shells per gun, main battery: 300
8 - 21.0" / 533 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 1.18" / 30 mm -

- Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 56,000 shp / 41,776 Kw = 35.01 kts
Range 3,500nm at 20.00 kts
Bunker at max displacement = 770 tons

Complement:
218 - 284

Cost:
£1.580 million / $6.322 million

Distribution of weights at normal displacement:
Armament: 52 tons, 1.6 %
Armour: 43 tons, 1.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 30 tons, 0.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 13 tons, 0.4 %
Machinery: 1,590 tons, 47.8 %
Hull, fittings & equipment: 986 tons, 29.7 %
Fuel, ammunition & stores: 578 tons, 17.4 %
Miscellaneous weights: 75 tons, 2.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,006 lbs / 456 Kg = 15.0 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.28
Metacentric height 2.0 ft / 0.6 m
Roll period: 12.0 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.54
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.400
Length to Beam Ratio: 11.07 : 1
'Natural speed' for length: 24.14 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 58
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: 21.33 ft / 6.50 m
- Forecastle (20 %): 18.04 ft / 5.50 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: 17.24 ft / 5.26 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 170.5 %
- Above water (accommodation/working, high = better): 114.5 %
Waterplane Area: 11,325 Square feet or 1,052 Square metres
Displacement factor (Displacement / loading): 86 %
Structure weight / hull surface area: 44 lbs/sq ft or 214 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.52
- Longitudinal: 1.75
- Overall: 0.59
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily


** Refit Specs **

Sarandi, Italy/ Argentina Destroyer Flotilla Leader laid down 1931

Displacement:
2,746 t light; 2,896 t standard; 3,324 t normal; 3,666 t full load

Dimensions: Length overall / water x beam x draught
453.96 ft / 442.91 ft x 40.03 ft x 16.40 ft (normal load)
138.37 m / 135.00 m x 12.20 m x 5.00 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 79.37lbs / 36.00kg shells, 1931 Model
Breech loading guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
12 - 0.79" / 20.0 mm guns (6x2 guns), 0.24lbs / 0.11kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 492 lbs / 223 kg
Shells per gun, main battery: 300
6 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 1.18" / 30 mm -
2nd: 0.59" / 15 mm - -
3rd: 0.39" / 10 mm - -

- Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 56,000 shp / 41,776 Kw = 35.01 kts
Range 3,500nm at 20.00 kts
Bunker at max displacement = 770 tons

Complement:
218 - 284

Cost:
£1.579 million / $6.317 million

Distribution of weights at normal displacement:
Armament: 52 tons, 1.6 %
Armour: 45 tons, 1.4 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 32 tons, 1.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 13 tons, 0.4 %
Machinery: 1,586 tons, 47.7 %
Hull, fittings & equipment: 963 tons, 29.0 %
Fuel, ammunition & stores: 578 tons, 17.4 %
Miscellaneous weights: 100 tons, 3.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
972 lbs / 441 Kg = 14.5 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.26
Metacentric height 1.9 ft / 0.6 m
Roll period: 12.1 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.54
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.400
Length to Beam Ratio: 11.07 : 1
'Natural speed' for length: 24.14 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 58
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: 21.33 ft / 6.50 m
- Forecastle (20 %): 18.04 ft / 5.50 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: 17.24 ft / 5.26 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 171.0 %
- Above water (accommodation/working, high = better): 117.1 %
Waterplane Area: 11,325 Square feet or 1,052 Square metres
Displacement factor (Displacement / loading): 85 %
Structure weight / hull surface area: 43 lbs/sq ft or 208 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.51
- Longitudinal: 1.71
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Refit Notes
Replacement of twin 37mm mounts with new model mounts
Addition of six twin 20mm mounts
Replacement of quadruple 21in torpedoes with two triple 600mm mounts
Two DCR and four DCT for 44 DCs
Addition of one RDF set
New directors
Addition of 25 tons misc weight
Refurbishment of internal fittings for life extension

ARA Contra Almirante Barbera
ARA Simon Bolivar

Future Destroyer Class, Argentina Destroyer laid down 1933

Displacement:
1,569 t light; 1,654 t standard; 1,894 t normal; 2,086 t full load

Dimensions: Length overall / water x beam x draught
385.06 ft / 377.30 ft x 35.43 ft x 12.30 ft (normal load)
117.37 m / 115.00 m x 10.80 m x 3.75 m

Armament:
6 - 4.53" / 115 mm guns (3x2 guns), 55.12lbs / 25.00kg shells, 1933 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 2 raised mounts - superfiring
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1944 Model
Anti-aircraft guns in deck mount
on centreline amidships, all raised guns - superfiring
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 342 lbs / 155 kg
Shells per gun, main battery: 240
6 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 0.79" / 20 mm
2nd: 0.39" / 10 mm - -
3rd: 0.47" / 12 mm - -

- Conning tower: 1.97" / 50 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 34,353 shp / 25,628 Kw = 33.26 kts
Range 5,500nm at 15.00 kts
Bunker at max displacement = 432 tons

Complement:
143 - 186

Cost:
£0.979 million / $3.914 million

Distribution of weights at normal displacement:
Armament: 36 tons, 1.9 %
Armour: 21 tons, 1.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 14 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 6 tons, 0.3 %
Machinery: 869 tons, 45.9 %
Hull, fittings & equipment: 578 tons, 30.5 %
Fuel, ammunition & stores: 325 tons, 17.1 %
Miscellaneous weights: 65 tons, 3.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
601 lbs / 273 Kg = 13.0 x 4.5 " / 115 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.34
Metacentric height 1.8 ft / 0.5 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.48
Seaboat quality (Average = 1.00): 1.03

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.403
Length to Beam Ratio: 10.65 : 1
'Natural speed' for length: 22.34 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (43 %): 19.69 ft / 6.00 m (10.66 ft / 3.25 m aft of break)
- Quarterdeck (15 %): 10.66 ft / 3.25 m
- Stern: 10.66 ft / 3.25 m
- Average freeboard: 14.67 ft / 4.47 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 167.9 %
- Above water (accommodation/working, high = better): 96.1 %
Waterplane Area: 8,555 Square feet or 795 Square metres
Displacement factor (Displacement / loading): 80 %
Structure weight / hull surface area: 36 lbs/sq ft or 178 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.52
- Overall: 0.55
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate

1944 Refit Notes
Replacement of sextuple 20mm mount with a twin M1944 37mm mount
Replacement of twin 37mm mounts with new M1944 twin mounts
Replacement of single 20mm with twin 20mm mounts

***
1944 Refit

Future Destroyer Class, Argentina Destroyer laid down 1933

Displacement:
1,569 t light; 1,654 t standard; 1,894 t normal; 2,086 t full load

Dimensions: Length overall / water x beam x draught
385.06 ft / 377.30 ft x 35.43 ft x 12.30 ft (normal load)
117.37 m / 115.00 m x 10.80 m x 3.75 m

Armament:
6 - 4.53" / 115 mm guns (3x2 guns), 55.12lbs / 25.00kg shells, 1933 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 2 raised mounts - superfiring
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1944 Model
Anti-aircraft guns in deck mount
on centreline amidships, all raised guns - superfiring
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 342 lbs / 155 kg
Shells per gun, main battery: 240
6 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 0.79" / 20 mm
2nd: 0.39" / 10 mm - -
3rd: 0.47" / 12 mm - -

- Conning tower: 1.97" / 50 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 34,353 shp / 25,628 Kw = 33.26 kts
Range 5,500nm at 15.00 kts
Bunker at max displacement = 432 tons

Complement:
143 - 186

Cost:
£0.979 million / $3.914 million

Distribution of weights at normal displacement:
Armament: 36 tons, 1.9 %
Armour: 21 tons, 1.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 14 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 6 tons, 0.3 %
Machinery: 869 tons, 45.9 %
Hull, fittings & equipment: 578 tons, 30.5 %
Fuel, ammunition & stores: 325 tons, 17.1 %
Miscellaneous weights: 65 tons, 3.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
601 lbs / 273 Kg = 13.0 x 4.5 " / 115 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.34
Metacentric height 1.8 ft / 0.5 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.48
Seaboat quality (Average = 1.00): 1.03

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.403
Length to Beam Ratio: 10.65 : 1
'Natural speed' for length: 22.34 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (43 %): 19.69 ft / 6.00 m (10.66 ft / 3.25 m aft of break)
- Quarterdeck (15 %): 10.66 ft / 3.25 m
- Stern: 10.66 ft / 3.25 m
- Average freeboard: 14.67 ft / 4.47 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 167.9 %
- Above water (accommodation/working, high = better): 96.1 %
Waterplane Area: 8,555 Square feet or 795 Square metres
Displacement factor (Displacement / loading): 80 %
Structure weight / hull surface area: 36 lbs/sq ft or 178 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.52
- Overall: 0.55
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate

1944 Refit Notes
Replacement of sextuple 20mm mount with a twin M1944 37mm mount
Replacement of twin 37mm mounts with new M1944 twin mounts
Replacement of single 20mm with twin 20mm mounts


******
1936 Class

ARA Capitan Tejada
ARA Lynch
ARA Parker

Project 417 1936 Class, Argentina Destroyer laid down 1936

Displacement:
1,570 t light; 1,660 t standard; 1,894 t normal; 2,081 t full load

Dimensions: Length overall / water x beam x draught
385.06 ft / 377.30 ft x 35.43 ft x 12.30 ft (normal load)
117.37 m / 115.00 m x 10.80 m x 3.75 m

Armament:
6 - 4.53" / 115 mm guns (3x2 guns), 55.00lbs / 24.95kg shells, 1935 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 2 raised mounts - superfiring
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 338 lbs / 153 kg
Shells per gun, main battery: 275
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 0.79" / 20 mm
2nd: 0.47" / 12 mm - -
3rd: 0.39" / 10 mm - -

- Conning tower: 0.98" / 25 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 34,509 shp / 25,743 Kw = 33.30 kts
Range 5,500nm at 15.00 kts
Bunker at max displacement = 420 tons

Complement:
143 - 186

Cost:
£1.077 million / $4.310 million

Distribution of weights at normal displacement:
Armament: 36 tons, 1.9 %
Armour: 18 tons, 0.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 15 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 3 tons, 0.2 %
Machinery: 852 tons, 45.0 %
Hull, fittings & equipment: 579 tons, 30.6 %
Fuel, ammunition & stores: 324 tons, 17.1 %
Miscellaneous weights: 85 tons, 4.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
605 lbs / 275 Kg = 13.0 x 4.5 " / 115 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.30
Metacentric height 1.7 ft / 0.5 m
Roll period: 11.4 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.49
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.403
Length to Beam Ratio: 10.65 : 1
'Natural speed' for length: 22.34 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (43 %): 19.69 ft / 6.00 m (10.66 ft / 3.25 m aft of break)
- Quarterdeck (15 %): 10.66 ft / 3.25 m
- Stern: 10.66 ft / 3.25 m
- Average freeboard: 14.67 ft / 4.47 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 166.4 %
- Above water (accommodation/working, high = better): 75.5 %
Waterplane Area: 8,555 Square feet or 795 Square metres
Displacement factor (Displacement / loading): 81 %
Structure weight / hull surface area: 36 lbs/sq ft or 178 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.52
- Overall: 0.56
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

1944 Refit Notes
Replacement of two sextuple 20mm mounts with two twin M1944 37mm mounts
Replacement of single 20mm with twin 20mm mounts


***
1944 Refit
Project 417 1936 Class, Argentina Destroyer laid down 1936

Displacement:
1,570 t light; 1,660 t standard; 1,894 t normal; 2,081 t full load

Dimensions: Length overall / water x beam x draught
385.06 ft / 377.30 ft x 35.43 ft x 12.30 ft (normal load)
117.37 m / 115.00 m x 10.80 m x 3.75 m

Armament:
6 - 4.53" / 115 mm guns (3x2 guns), 55.00lbs / 24.95kg shells, 1935 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 2 raised mounts - superfiring
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 338 lbs / 153 kg
Shells per gun, main battery: 275
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 0.79" / 20 mm
2nd: 0.47" / 12 mm - -
3rd: 0.39" / 10 mm - -

- Conning tower: 0.98" / 25 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 34,509 shp / 25,743 Kw = 33.30 kts
Range 5,500nm at 15.00 kts
Bunker at max displacement = 420 tons

Complement:
143 - 186

Cost:
£1.077 million / $4.310 million

Distribution of weights at normal displacement:
Armament: 36 tons, 1.9 %
Armour: 18 tons, 0.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 15 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 3 tons, 0.2 %
Machinery: 852 tons, 45.0 %
Hull, fittings & equipment: 579 tons, 30.6 %
Fuel, ammunition & stores: 324 tons, 17.1 %
Miscellaneous weights: 85 tons, 4.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
605 lbs / 275 Kg = 13.0 x 4.5 " / 115 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.30
Metacentric height 1.7 ft / 0.5 m
Roll period: 11.4 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.49
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.403
Length to Beam Ratio: 10.65 : 1
'Natural speed' for length: 22.34 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (43 %): 19.69 ft / 6.00 m (10.66 ft / 3.25 m aft of break)
- Quarterdeck (15 %): 10.66 ft / 3.25 m
- Stern: 10.66 ft / 3.25 m
- Average freeboard: 14.67 ft / 4.47 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 166.4 %
- Above water (accommodation/working, high = better): 75.5 %
Waterplane Area: 8,555 Square feet or 795 Square metres
Displacement factor (Displacement / loading): 81 %
Structure weight / hull surface area: 36 lbs/sq ft or 178 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.52
- Overall: 0.56
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

1944 Refit Notes
Replacement of two sextuple 20mm mounts with two twin M1944 37mm mounts
Replacement of single 20mm with twin 20mm mounts


***
1939 Class

ARA Cervantes
ARA Juan de Garray
ARA Catamarca
ARA San Juan
ARA Santa Cruz
ARA Spiro

Project 421 1939 Class, Argentina Destroyer laid down 1939

Displacement:
1,594 t light; 1,686 t standard; 1,936 t normal; 2,136 t full load

Dimensions: Length overall / water x beam x draught
383.82 ft / 377.30 ft x 35.43 ft x 12.30 ft (normal load)
116.99 m / 115.00 m x 10.80 m x 3.75 m

Armament:
6 - 4.53" / 115 mm guns (3x2 guns), 55.12lbs / 25.00kg shells, 1933 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 2 raised mounts - superfiring
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1933 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1933 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 339 lbs / 154 kg
Shells per gun, main battery: 275
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 0.79" / 20 mm
2nd: 0.39" / 10 mm - -
3rd: 0.39" / 10 mm - -

- Conning tower: 0.98" / 25 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 35,000 shp / 26,110 Kw = 33.25 kts
Range 6,000nm at 15.00 kts
Bunker at max displacement = 451 tons

Complement:
145 - 189

Cost:
£1.197 million / $4.788 million

Distribution of weights at normal displacement:
Armament: 36 tons, 1.9 %
Armour: 18 tons, 0.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 14 tons, 0.7 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 3 tons, 0.2 %
Machinery: 856 tons, 44.2 %
Hull, fittings & equipment: 600 tons, 31.0 %
Fuel, ammunition & stores: 342 tons, 17.7 %
Miscellaneous weights: 85 tons, 4.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
659 lbs / 299 Kg = 14.2 x 4.5 " / 115 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.31
Metacentric height 1.7 ft / 0.5 m
Roll period: 11.4 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.50
Seaboat quality (Average = 1.00): 1.06

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.412
Length to Beam Ratio: 10.65 : 1
'Natural speed' for length: 22.31 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 17.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (43 %): 19.69 ft / 6.00 m (11.48 ft / 3.50 m aft of break)
- Quarterdeck (15 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 15.14 ft / 4.62 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 163.4 %
- Above water (accommodation/working, high = better): 77.8 %
Waterplane Area: 8,605 Square feet or 799 Square metres
Displacement factor (Displacement / loading): 85 %
Structure weight / hull surface area: 37 lbs/sq ft or 179 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.67
- Overall: 0.56
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

Class Names: Cervantes, Juan de Garray, Catamarca, San Juan, Santa Cruz, Spiro

Misc Weight: Includes eight 600mm torpedoes, 4 DCT and two racks (40 DC) and Langhiri-Florisson ASDIC

ARA Pinedo
ARA Buchardo
ARA Jorge
ARA Thorne
ARA Entre Rios

Project 414C, Argentina Torpedo Destroyer laid down 1935

Displacement:
1,290 t light; 1,368 t standard; 1,555 t normal; 1,705 t full load

Dimensions: Length overall / water x beam x draught
389.86 ft / 377.30 ft x 32.81 ft x 10.99 ft (normal load)
118.83 m / 115.00 m x 10.00 m x 3.35 m

Armament:
6 - 4.53" / 115 mm guns (3x2 guns), 55.12lbs / 25.00kg shells, 1933 Model
Dual purpose guns in deck mounts
on centreline ends, majority aft
2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1932 Model
Anti-aircraft guns in deck mount
on centreline forward, all raised guns - superfiring
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 335 lbs / 152 kg
Shells per gun, main battery: 250
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm -
2nd: 0.39" / 10 mm - -

- Conning tower: 1.97" / 50 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 31,197 shp / 23,273 Kw = 33.53 kts
Range 3,200nm at 18.00 kts
Bunker at max displacement = 337 tons

Complement:
123 - 160

Cost:
£0.890 million / $3.561 million

Distribution of weights at normal displacement:
Armament: 35 tons, 2.3 %
Armour: 19 tons, 1.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 13 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 6 tons, 0.4 %
Machinery: 715 tons, 46.0 %
Hull, fittings & equipment: 471 tons, 30.3 %
Fuel, ammunition & stores: 265 tons, 17.1 %
Miscellaneous weights: 50 tons, 3.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
552 lbs / 250 Kg = 11.9 x 4.5 " / 115 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.50
Metacentric height 1.9 ft / 0.6 m
Roll period: 10.0 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.24
Seaboat quality (Average = 1.00): 1.15

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.400
Length to Beam Ratio: 11.50 : 1
'Natural speed' for length: 22.21 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 43
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 4.92 ft / 1.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.00 ft / 6.40 m
- Forecastle (15 %): 17.72 ft / 5.40 m
- Mid (47 %): 14.27 ft / 4.35 m
- Quarterdeck (15 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 14.03 ft / 4.28 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 171.0 %
- Above water (accommodation/working, high = better): 74.1 %
Waterplane Area: 7,908 Square feet or 735 Square metres
Displacement factor (Displacement / loading): 73 %
Structure weight / hull surface area: 31 lbs/sq ft or 154 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.52
- Overall: 0.56
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

ARA Drummond

Project 419 Mendoza No 8 (Drummond), Argentina Destroyer laid down 1937

Displacement:
1,716 t light; 1,809 t standard; 2,030 t normal; 2,207 t full load

Dimensions: Length overall / water x beam x draught
369.19 ft / 361.55 ft x 33.79 ft x 13.78 ft (normal load)
112.53 m / 110.20 m x 10.30 m x 4.20 m

Armament:
4 - 4.53" / 115 mm guns (2x2 guns), 55.12lbs / 25.00kg shells, 1937 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread, 1 raised mount
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
12 - 0.79" / 20.0 mm guns (2x6 guns), 0.24lbs / 0.11kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 230 lbs / 104 kg
Shells per gun, main battery: 400
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.98" / 25 mm 1.97" / 50 mm
2nd: 0.59" / 15 mm 0.39" / 10 mm -
3rd: 0.47" / 12 mm - -

- Conning tower: 1.97" / 50 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 40,800 shp / 30,437 Kw = 34.02 kts
Range 5,000nm at 15.00 kts
Bunker at max displacement = 398 tons

Complement:
150 - 196

Cost:
£1.190 million / $4.761 million

Distribution of weights at normal displacement:
Armament: 24 tons, 1.2 %
Armour: 25 tons, 1.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 18 tons, 0.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 7 tons, 0.3 %
Machinery: 984 tons, 48.5 %
Hull, fittings & equipment: 597 tons, 29.4 %
Fuel, ammunition & stores: 314 tons, 15.5 %
Miscellaneous weights: 85 tons, 4.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
599 lbs / 272 Kg = 12.9 x 4.5 " / 115 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 1.5 ft / 0.5 m
Roll period: 11.7 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.41
Seaboat quality (Average = 1.00): 1.05

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.422
Length to Beam Ratio: 10.70 : 1
'Natural speed' for length: 21.80 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 48
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.00 ft / 6.40 m
- Forecastle (20 %): 20.34 ft / 6.20 m
- Mid (52 %): 20.34 ft / 6.20 m (10.50 ft / 3.20 m aft of break)
- Quarterdeck (15 %): 10.50 ft / 3.20 m
- Stern: 10.50 ft / 3.20 m
- Average freeboard: 15.67 ft / 4.78 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 172.2 %
- Above water (accommodation/working, high = better): 66.2 %
Waterplane Area: 7,919 Square feet or 736 Square metres
Displacement factor (Displacement / loading): 79 %
Structure weight / hull surface area: 36 lbs/sq ft or 175 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.22
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

Misc Weight
20 tons Italian Sonar
30 tons DC fit (2 DCT 4 throwers)
12 tons torpedoes
Remainder growth weight


***

1944 Refit
Project 419 Mendoza No 8 (Drummond), Argentina Destroyer laid down 1937

Displacement:
1,716 t light; 1,809 t standard; 2,030 t normal; 2,207 t full load

Dimensions: Length overall / water x beam x draught
369.19 ft / 361.55 ft x 33.79 ft x 13.78 ft (normal load)
112.53 m / 110.20 m x 10.30 m x 4.20 m

Armament:
4 - 4.53" / 115 mm guns (2x2 guns), 55.12lbs / 25.00kg shells, 1937 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread, 1 raised mount
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
10 - 0.79" / 20.0 mm guns (5x2 guns), 0.24lbs / 0.11kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, all amidships, 4 raised mounts - superfiring
Weight of broadside 229 lbs / 104 kg
Shells per gun, main battery: 400
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.98" / 25 mm 1.97" / 50 mm
2nd: 0.59" / 15 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -

- Conning tower: 1.97" / 50 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 40,800 shp / 30,437 Kw = 34.02 kts
Range 5,000nm at 15.00 kts
Bunker at max displacement = 398 tons

Complement:
150 - 196

Cost:
£1.190 million / $4.760 million

Distribution of weights at normal displacement:
Armament: 24 tons, 1.2 %
Armour: 25 tons, 1.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 19 tons, 0.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 7 tons, 0.3 %
Machinery: 984 tons, 48.5 %
Hull, fittings & equipment: 597 tons, 29.4 %
Fuel, ammunition & stores: 314 tons, 15.5 %
Miscellaneous weights: 85 tons, 4.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
599 lbs / 272 Kg = 12.9 x 4.5 " / 115 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 1.5 ft / 0.5 m
Roll period: 11.7 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.40
Seaboat quality (Average = 1.00): 1.05

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.422
Length to Beam Ratio: 10.70 : 1
'Natural speed' for length: 21.80 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 48
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.00 ft / 6.40 m
- Forecastle (20 %): 20.34 ft / 6.20 m
- Mid (52 %): 20.34 ft / 6.20 m (10.50 ft / 3.20 m aft of break)
- Quarterdeck (15 %): 10.50 ft / 3.20 m
- Stern: 10.50 ft / 3.20 m
- Average freeboard: 15.67 ft / 4.78 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 172.2 %
- Above water (accommodation/working, high = better): 66.2 %
Waterplane Area: 7,919 Square feet or 736 Square metres
Displacement factor (Displacement / loading): 79 %
Structure weight / hull surface area: 36 lbs/sq ft or 175 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.22
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

Misc Weight
20 tons Italian Sonar
30 tons DC fit (2 DCT 4 throwers)
12 tons torpedoes
Remainder growth weight

Refit Notes
RDF Set added
Twin 37mm mounts replaced with new model mounts
Two sextuple 20mm mounts replaced by five twin 20mm mounts (one on quarterdeck)

ARA Ferre
ARA Gomez Roca
ARA Granville
ARA Guerrico

Project 406A Ferre Class, Argentina Frigate laid down 1938

Displacement:
1,090 t light; 1,131 t standard; 1,298 t normal; 1,431 t full load

Dimensions: Length overall / water x beam x draught
332.79 ft / 327.43 ft x 29.53 ft x 10.17 ft (normal load)
101.43 m / 99.80 m x 9.00 m x 3.10 m

Armament:
4 - 3.94" / 100 mm guns (2x2 guns), 30.42lbs / 13.80kg shells, 1933 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts - superfiring
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1933 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
12 - 0.79" / 20.0 mm guns (2x6 guns), 0.24lbs / 0.11kg shells, 1933 Model
Anti-aircraft guns in deck mounts
on side, all forward, all raised mounts - superfiring
Weight of broadside 131 lbs / 59 kg
Shells per gun, main battery: 200

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 0.79" / 20 mm
2nd: 0.39" / 10 mm - -
3rd: 0.47" / 12 mm - -

- Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 20,000 shp / 14,920 Kw = 30.10 kts
Range 5,000nm at 15.00 kts
Bunker at max displacement = 300 tons

Complement:
107 - 140

Cost:
£0.718 million / $2.871 million

Distribution of weights at normal displacement:
Armament: 16 tons, 1.3 %
Armour: 16 tons, 1.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 8 tons, 0.7 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 7 tons, 0.5 %
Machinery: 539 tons, 41.5 %
Hull, fittings & equipment: 434 tons, 33.4 %
Fuel, ammunition & stores: 208 tons, 16.0 %
Miscellaneous weights: 85 tons, 6.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
589 lbs / 267 Kg = 19.3 x 3.9 " / 100 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.27
Metacentric height 1.2 ft / 0.4 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.43
Seaboat quality (Average = 1.00): 1.45

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.462
Length to Beam Ratio: 11.09 : 1
'Natural speed' for length: 20.58 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 35
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: 20.01 ft / 6.10 m
- Forecastle (15 %): 18.04 ft / 5.50 m
- Mid (50 %): 13.78 ft / 4.20 m
- Quarterdeck (15 %): 13.78 ft / 4.20 m
- Stern: 13.78 ft / 4.20 m
- Average freeboard: 15.28 ft / 4.66 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 151.4 %
- Above water (accommodation/working, high = better): 171.0 %
Waterplane Area: 6,472 Square feet or 601 Square metres
Displacement factor (Displacement / loading): 98 %
Structure weight / hull surface area: 30 lbs/sq ft or 148 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.80
- Overall: 0.59
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily


ASW Armament: 4 DCT and two racks (80 DC total) and four Italian 130mm A/S mortars (10 rounds per mortar)
Langhiri-Florisson ADSIC



ARA Granville
ARA Guerrico

Project 407B Granville Class, Argentina Escort Frigate laid down 1938

Displacement:
1,091 t light; 1,139 t standard; 1,306 t normal; 1,440 t full load

Dimensions: Length overall / water x beam x draught
332.79 ft / 327.43 ft x 29.53 ft x 10.17 ft (normal load)
101.43 m / 99.80 m x 9.00 m x 3.10 m

Armament:
6 - 3.94" / 100 mm guns (3x2 guns), 30.42lbs / 13.80kg shells, 1933 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority aft, all raised mounts - superfiring
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1933 Model
Anti-aircraft guns in deck mounts
on side, all aft, all raised mounts - superfiring
12 - 0.79" / 20.0 mm guns (2x6 guns), 0.24lbs / 0.11kg shells, 1933 Model
Anti-aircraft guns in deck mounts
on side, all forward, all raised mounts - superfiring
Weight of broadside 192 lbs / 87 kg
Shells per gun, main battery: 200

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 0.79" / 20 mm
2nd: 0.39" / 10 mm - -
3rd: 0.47" / 12 mm - -

- Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 20,000 shp / 14,920 Kw = 30.06 kts
Range 5,000nm at 15.00 kts
Bunker at max displacement = 302 tons

Complement:
108 - 141

Cost:
£0.746 million / $2.983 million

Distribution of weights at normal displacement:
Armament: 24 tons, 1.8 %
Armour: 19 tons, 1.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 12 tons, 0.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 7 tons, 0.5 %
Machinery: 528 tons, 40.4 %
Hull, fittings & equipment: 454 tons, 34.7 %
Fuel, ammunition & stores: 216 tons, 16.5 %
Miscellaneous weights: 65 tons, 5.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
590 lbs / 268 Kg = 19.3 x 3.9 " / 100 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.24
Metacentric height 1.2 ft / 0.4 m
Roll period: 11.4 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.65
Seaboat quality (Average = 1.00): 1.41

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.465
Length to Beam Ratio: 11.09 : 1
'Natural speed' for length: 20.57 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 36
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: 20.01 ft / 6.10 m
- Forecastle (15 %): 18.04 ft / 5.50 m
- Mid (50 %): 13.78 ft / 4.20 m
- Quarterdeck (15 %): 13.78 ft / 4.20 m
- Stern: 13.78 ft / 4.20 m
- Average freeboard: 15.28 ft / 4.66 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 150.8 %
- Above water (accommodation/working, high = better): 169.9 %
Waterplane Area: 6,489 Square feet or 603 Square metres
Displacement factor (Displacement / loading): 95 %
Structure weight / hull surface area: 32 lbs/sq ft or 154 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.81
- Overall: 0.59
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

ASW Armamentt: Two DCT and two racks (30 DC total), one Langhiri-Florisson ASDIC

ARA Rivadavia
Basically identical to the 1939 and 1937 Class destroyers.

Project 422 1940 Class, Argentina Destroyer laid down 1940

Displacement:
1,625 t light; 1,719 t standard; 1,970 t normal; 2,171 t full load

Dimensions: Length overall / water x beam x draught
390.63 ft / 383.86 ft x 35.43 ft x 12.30 ft (normal load)
119.06 m / 117.00 m x 10.80 m x 3.75 m

Armament:
6 - 4.53" / 115 mm guns (3x2 guns), 55.00lbs / 24.95kg shells, 1935 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 2 raised mounts - superfiring
6 - 1.46" / 37.0 mm guns (3x2 guns), 1.55lbs / 0.70kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
12 - 0.79" / 20.0 mm guns (6x2 guns), 0.24lbs / 0.11kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 342 lbs / 155 kg
Shells per gun, main battery: 275
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 0.79" / 20 mm
2nd: 0.39" / 10 mm - -
3rd: 0.39" / 10 mm - -

- Conning tower: 0.98" / 25 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 35,000 shp / 26,110 Kw = 33.23 kts
Range 6,000nm at 15.00 kts
Bunker at max displacement = 452 tons

Complement:
147 - 192

Cost:
£1.246 million / $4.983 million

Distribution of weights at normal displacement:
Armament: 36 tons, 1.8 %
Armour: 18 tons, 0.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 15 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 3 tons, 0.2 %
Machinery: 859 tons, 43.6 %
Hull, fittings & equipment: 622 tons, 31.6 %
Fuel, ammunition & stores: 344 tons, 17.5 %
Miscellaneous weights: 90 tons, 4.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
699 lbs / 317 Kg = 15.1 x 4.5 " / 115 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.32
Metacentric height 1.7 ft / 0.5 m
Roll period: 11.3 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.50
Seaboat quality (Average = 1.00): 1.14

Hull form characteristics:
Hull has raised forecastle, rise forward of midbreak
and transom stern
Block coefficient: 0.412
Length to Beam Ratio: 10.83 : 1
'Natural speed' for length: 22.47 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 43
Bow angle (Positive = bow angles forward): 17.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.15 ft / 6.75 m
- Forecastle (20 %): 21.33 ft / 6.50 m (19.69 ft / 6.00 m aft of break)
- Mid (43 %): 21.33 ft / 6.50 m (11.48 ft / 3.50 m aft of break)
- Quarterdeck (15 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 15.59 ft / 4.75 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 161.6 %
- Above water (accommodation/working, high = better): 81.1 %
Waterplane Area: 8,754 Square feet or 813 Square metres
Displacement factor (Displacement / loading): 87 %
Structure weight / hull surface area: 36 lbs/sq ft or 178 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.77
- Overall: 0.56
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

Class Names: Rivadavia

Misc Weight: Includes eight 600mm torpedoes, 4 DCT and two racks (40 DC) and Langhiri-Florisson ASDIC and one search/ gunnery radio-location set

ARA Jaguar, Pantera, Leopardo, Tigre, Puma, Leon, Tiburón and Santa

Rebuilt ex-Brazilian Margay Class destroyers purchased in Q2/42.


Project 451 (ex-Margay Class), Brazil Destroyer (Argentine Refit 1942) laid down 1932 (Engine 1942)

Displacement:
2,039 t light; 2,145 t standard; 2,602 t normal; 2,967 t full load

Dimensions: Length overall / water x beam x draught
401.26 ft / 390.00 ft x 40.00 ft x 13.00 ft (normal load)
122.30 m / 118.87 m x 12.19 m x 3.96 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 70.55lbs / 32.00kg shells, 1937 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
14 - 1.46" / 37.0 mm guns (7x2 guns), 1.55lbs / 0.70kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 446 lbs / 202 kg
Shells per gun, main battery: 210
4 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.00" / 25 mm 390.00 ft / 118.87 m 8.00 ft / 2.44 m
Ends: Unarmoured
Main Belt covers 154 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.98" / 25 mm 2.00" / 51 mm
2nd: 0.59" / 15 mm - -
3rd: 0.39" / 10 mm - -

- Armour deck: 0.25" / 6 mm, Conning tower: 1.00" / 25 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 3 shafts, 40,000 shp / 29,840 Kw = 31.39 kts
Range 15,000nm at 12.00 kts
Bunker at max displacement = 822 tons

Complement:
181 - 236

Cost:
£1.173 million / $4.694 million

Distribution of weights at normal displacement:
Armament: 53 tons, 2.0 %
Armour: 197 tons, 7.6 %
- Belts: 115 tons, 4.4 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 31 tons, 1.2 %
- Armour Deck: 46 tons, 1.8 %
- Conning Tower: 4 tons, 0.2 %
Machinery: 1,015 tons, 39.0 %
Hull, fittings & equipment: 724 tons, 27.8 %
Fuel, ammunition & stores: 562 tons, 21.6 %
Miscellaneous weights: 50 tons, 1.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,081 lbs / 490 Kg = 16.1 x 5.1 " / 130 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.30
Metacentric height 2.0 ft / 0.6 m
Roll period: 11.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.49
Seaboat quality (Average = 1.00): 1.18

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.449
Length to Beam Ratio: 9.75 : 1
'Natural speed' for length: 19.75 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 59
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 1.00 ft / 0.30 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.00 ft / 6.71 m
- Forecastle (20 %): 16.00 ft / 4.88 m
- Mid (50 %): 16.00 ft / 4.88 m
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 16.00 ft / 4.88 m
- Average freeboard: 16.48 ft / 5.02 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 144.8 %
- Above water (accommodation/working, high = better): 137.8 %
Waterplane Area: 9,943 Square feet or 924 Square metres
Displacement factor (Displacement / loading): 94 %
Structure weight / hull surface area: 39 lbs/sq ft or 191 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.56
- Overall: 0.56
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


Refit Changes
120mm mounts replaced by 130mm Mk III DP mounts
Addition of two twin 37mm AA mouns in place of upper torpedo tube mount
New main director
Addition of
New boilers and tubines
Refurbishment of internal fittings

Eight purchased from Italy Q1-Q2/1945
ARA Ingeniero
ARA Grenadier
ARA Lancer
ARA Bombardero
ARA Tripulante
ARA Pirata
ARA Legionario
ARA Gunner



Soldati Class, Italy Destroyer laid down 1931

Displacement:
1,560 t light; 1,650 t standard; 1,953 t normal; 2,196 t full load

Dimensions: Length overall / water x beam x draught
379.14 ft / 360.89 ft x 36.09 ft x 13.12 ft (normal load)
115.56 m / 110.00 m x 11.00 m x 4.00 m

Armament:
4 - 5.12" / 130 mm guns (2x2 guns), 70.55lbs / 32.00kg shells, 1931 Model
Breech loading guns in deck mounts with hoists
on centreline, all forward, 1 raised mount - superfiring
8 - 1.46" / 37.0 mm guns (2x4 guns), 1.55lbs / 0.70kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on centreline, all aft, all raised mounts - superfiring
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, all forward, 2 raised mounts - superfiring
Weight of broadside 296 lbs / 134 kg
Shells per gun, main battery: 300
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.18" / 30 mm 0.79" / 20 mm -
2nd: 0.59" / 15 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 32,006 shp / 23,877 Kw = 32.37 kts
Range 3,400nm at 20.00 kts
Bunker at max displacement = 546 tons

Complement:
146 - 190

Cost:
£0.898 million / $3.591 million

Distribution of weights at normal displacement:
Armament: 35 tons, 1.8 %
Armour: 15 tons, 0.8 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 15 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 868 tons, 44.5 %
Hull, fittings & equipment: 561 tons, 28.7 %
Fuel, ammunition & stores: 393 tons, 20.1 %
Miscellaneous weights: 81 tons, 4.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
612 lbs / 277 Kg = 9.1 x 5.1 " / 130 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 1.5 ft / 0.5 m
Roll period: 12.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.49
Seaboat quality (Average = 1.00): 1.04

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.400
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 21.97 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 67
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: 25.92 ft / 7.90 m
- Forecastle (10 %): 19.36 ft / 5.90 m
- Mid (40 %): 19.36 ft / 5.90 m (11.15 ft / 3.40 m aft of break)
- Quarterdeck (10 %): 11.15 ft / 3.40 m
- Stern: 11.15 ft / 3.40 m
- Average freeboard: 14.70 ft / 4.48 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 163.4 %
- Above water (accommodation/working, high = better): 71.7 %
Waterplane Area: 8,320 Square feet or 773 Square metres
Displacement factor (Displacement / loading): 85 %
Structure weight / hull surface area: 36 lbs/sq ft or 178 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.68
- Overall: 0.56
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform

Misc Weight:
20 tons = 2x quadruple 37mm mounts
24 tons = 8x 600mm TT
1 ton = towed torpedo
20 tons = 50x DC on racks
10 tons = Sonar
10 tons = Radar
= 81 tons

1947 Class Project 455, Argentina Destroyer laid down 1947

Displacement:
2,085 t light; 2,234 t standard; 2,496 t normal; 2,706 t full load

Dimensions: Length overall / water x beam x draught
398.05 ft / 387.14 ft x 39.37 ft x 13.78 ft (normal load)
121.33 m / 118.00 m x 12.00 m x 4.20 m

Armament:
6 - 5.04" / 128 mm guns (3x2 guns), 64.00lbs / 29.03kg shells, 1947 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, majority forward, 2 raised mounts - superfiring
8 - 2.17" / 55.0 mm guns (4x2 guns), 5.08lbs / 2.30kg shells, 1947 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, all forward, all raised mounts - superfiring
Weight of broadside 426 lbs / 193 kg
Shells per gun, main battery: 400
4 - 24.5" / 622.3 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.79" / 20 mm 0.98" / 25 mm
2nd: 0.59" / 15 mm 0.59" / 15 mm -
3rd: 0.39" / 10 mm - -

- Conning tower: 0.98" / 25 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 45,000 shp / 33,570 Kw = 34.05 kts
Range 5,000nm at 16.00 kts
Bunker at max displacement = 473 tons

Complement:
176 - 229

Cost:
£1.965 million / $7.861 million

Distribution of weights at normal displacement:
Armament: 63 tons, 2.5 %
Armour: 29 tons, 1.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 25 tons, 1.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 4 tons, 0.2 %
Machinery: 1,032 tons, 41.4 %
Hull, fittings & equipment: 821 tons, 32.9 %
Fuel, ammunition & stores: 412 tons, 16.5 %
Miscellaneous weights: 140 tons, 5.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
912 lbs / 414 Kg = 14.3 x 5.0 " / 128 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.24
Metacentric height 1.8 ft / 0.6 m
Roll period: 12.2 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.50
Seaboat quality (Average = 1.00): 1.15

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.416
Length to Beam Ratio: 9.83 : 1
'Natural speed' for length: 22.74 kts
Power going to wave formation at top speed: 66 %
Trim (Max stability = 0, Max steadiness = 100): 44
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: 27.00 ft / 8.23 m
- Forecastle (20 %): 24.28 ft / 7.40 m
- Mid (45 %): 24.28 ft / 7.40 m (12.47 ft / 3.80 m aft of break)
- Quarterdeck (15 %): 12.47 ft / 3.80 m
- Stern: 12.47 ft / 3.80 m
- Average freeboard: 18.00 ft / 5.49 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 161.4 %
- Above water (accommodation/working, high = better): 136.5 %
Waterplane Area: 9,837 Square feet or 914 Square metres
Displacement factor (Displacement / loading): 86 %
Structure weight / hull surface area: 41 lbs/sq ft or 202 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.41
- Overall: 0.59
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent

Class Names: Murature, Rioja, Jujuy, Hercules, Heroina, +?

Misc weight includes:
One Briitsh Type 144Q ASDIC
One British Type 145 depth finding ASDIC
One Chilean surface search RDF set
One Chilean aerial search search RDF set
One German main director with RDF
One German HA/ AA director with RDF
HF/DF
Air conditioning
2x DC Racks for 24 DC
2x British Squid A/S mortar