Paraguay Class, NUS - Italian Built Cruiser laid down 1901
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3 ships in class - Gran Chaco (ex.Paraguay), Cordillera, and San Pedro
Ships built in Italia, armed in NUS
Paraguay Class, UNS - Italian Built Protected Cruiser laid down 1901
Displacement:
4 914 t light; 5 118 t standard; 5 597 t normal; 5 979 t full load
Dimensions: Length overall / water x beam x draught
355.63 ft / 350.00 ft x 50.00 ft x 21.00 ft (normal load)
108.40 m / 106.68 m x 15.24 m x 6.40 m
Armament:
4 - 8.00" / 203 mm guns (2x2 guns), 256.00lbs / 116.12kg shells, 1895 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1895 Model
Quick firing guns in deck mounts
on side, all amidships
2 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1896 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.89kg shells, 1901 Model
Quick firing guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1 087 lbs / 493 kg
Shells per gun, main battery: 150
4 - 18.0" / 457.2 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.00" / 152 mm 283.00 ft / 86.26 m 9.00 ft / 2.74 m
Ends: 3.00" / 76 mm 67.00 ft / 20.42 m 9.00 ft / 2.74 m
Upper: 1.00" / 25 mm 283.00 ft / 86.26 m 8.00 ft / 2.44 m
Main Belt covers 124 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 6.00" / 152 mm 2.00" / 51 mm 4.00" / 102 mm
2nd: 1.00" / 25 mm 1.00" / 25 mm -
3rd: 1.00" / 25 mm - -
- Armour deck: 1.00" / 25 mm, Conning tower: 4.00" / 102 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 3 shafts, 11 716 ihp / 8 740 Kw = 20.00 kts
Range 5 000nm at 10.00 kts
Bunker at max displacement = 861 tons (100% coal)
Complement:
323 - 420
Cost:
£0.538 million / $2.154 million
Distribution of weights at normal displacement:
Armament: 136 tons, 2.4 %
Armour: 1 223 tons, 21.9 %
- Belts: 790 tons, 14.1 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 184 tons, 3.3 %
- Armour Deck: 222 tons, 4.0 %
- Conning Tower: 27 tons, 0.5 %
Machinery: 1 803 tons, 32.2 %
Hull, fittings & equipment: 1 703 tons, 30.4 %
Fuel, ammunition & stores: 683 tons, 12.2 %
Miscellaneous weights: 49 tons, 0.9 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
4 018 lbs / 1 823 Kg = 15.7 x 8.0 " / 203 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.26
Metacentric height 2.7 ft / 0.8 m
Roll period: 12.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.44
Seaboat quality (Average = 1.00): 1.59
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.533
Length to Beam Ratio: 7.00 : 1
'Natural speed' for length: 18.71 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 44
Bow angle (Positive = bow angles forward): 9.00 degrees
Stern overhang: 2.46 ft / 0.75 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.00 ft / 6.10 m
- Forecastle (10 %): 20.00 ft / 6.10 m
- Mid (50 %): 20.00 ft / 6.10 m (12.00 ft / 3.66 m aft of break)
- Quarterdeck (10 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 16.00 ft / 4.88 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 124.1 %
- Above water (accommodation/working, high = better): 100.3 %
Waterplane Area: 12 020 Square feet or 1 117 Square metres
Displacement factor (Displacement / loading): 94 %
Structure weight / hull surface area: 85 lbs/sq ft or 414 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.47
- Overall: 1.00
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
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Pachacutec - LD 1903 - com 1906
Viracocha Inca - LD 1901 - com 1904 - refit 1912 - to Greece 1914
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4700T, Peru escort cruiser laid down 1901
Displacement:
4 700 t light; 4 916 t standard; 5 352 t normal; 5 700 t full load
Dimensions: Length overall / water x beam x draught
387.14 ft / 387.14 ft x 68.90 ft x 14.19 ft (normal load)
118.00 m / 118.00 m x 21.00 m x 4.32 m
Armament:
4 - 9.06" / 230 mm guns (2x2 guns), 371.24lbs / 168.39kg shells, 1901 Model
Breech loading guns in turrets (on barbettes)
on centreline, evenly spread
10 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1901 Model
Breech loading guns in casemate mounts
on side, evenly spread
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1901 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1 708 lbs / 775 kg
Shells per gun, main battery: 110
4 - 18.0" / 457.2 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 282.15 ft / 86.00 m 8.01 ft / 2.44 m
Ends: 1.57" / 40 mm 78.74 ft / 24.00 m 8.01 ft / 2.44 m
26.25 ft / 8.00 m Unarmoured ends
Main Belt covers 112 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.72" / 120 mm 1.97" / 50 mm 3.94" / 100 mm
2nd: 1.57" / 40 mm - -
3rd: 0.79" / 20 mm - -
- Armour deck: 1.18" / 30 mm, Conning tower: 3.94" / 100 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 7 844 ihp / 5 851 Kw = 18.15 kts
Range 4 500nm at 10.00 kts
Bunker at max displacement = 785 tons (100% coal)
Complement:
312 - 406
Cost:
£0.513 million / $2.051 million
Distribution of weights at normal displacement:
Armament: 213 tons, 4.0 %
Armour: 1 019 tons, 19.0 %
- Belts: 416 tons, 7.8 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 191 tons, 3.6 %
- Armour Deck: 387 tons, 7.2 %
- Conning Tower: 26 tons, 0.5 %
Machinery: 1 207 tons, 22.5 %
Hull, fittings & equipment: 2 176 tons, 40.7 %
Fuel, ammunition & stores: 651 tons, 12.2 %
Miscellaneous weights: 85 tons, 1.6 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5 537 lbs / 2 511 Kg = 14.9 x 9.1 " / 230 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.45
Metacentric height 5.4 ft / 1.7 m
Roll period: 12.4 seconds
Steadiness - As gun platform (Average = 50 %): 79 %
- Recoil effect (Restricted arc if above 1.00): 0.18
Seaboat quality (Average = 1.00): 1.32
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.495
Length to Beam Ratio: 5.62 : 1
'Natural speed' for length: 19.68 kts
Power going to wave formation at top speed: 43 %
Trim (Max stability = 0, Max steadiness = 100): 60
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 15.75 ft / 4.80 m
- Forecastle (16 %): 13.12 ft / 4.00 m
- Mid (50 %): 11.48 ft / 3.50 m
- Quarterdeck (16 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 12.19 ft / 3.72 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 111.1 %
- Above water (accommodation/working, high = better): 128.5 %
Waterplane Area: 17 691 Square feet or 1 644 Square metres
Displacement factor (Displacement / loading): 102 %
Structure weight / hull surface area: 98 lbs/sq ft or 479 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.38
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Inca Roca escort cruiser class is slightly improved from the Viracocha class (4700T)
Inca Roca - LD 1905 - com 1908
Yahuar Huacac - LD 1908 - com 1911
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4800T, Peru escort cruiser laid down 1905
Displacement:
4 800 t light; 5 017 t standard; 5 431 t normal; 5 762 t full load
Dimensions: Length overall / water x beam x draught
387.14 ft / 387.14 ft x 68.90 ft x 14.40 ft (normal load)
118.00 m / 118.00 m x 21.00 m x 4.39 m
Armament:
4 - 9.06" / 230 mm guns (2x2 guns), 371.24lbs / 168.39kg shells, 1905 Model
Breech loading guns in turrets (on barbettes)
on centreline, evenly spread
10 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1905 Model
Breech loading guns in casemate mounts
on side, evenly spread
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1905 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1 708 lbs / 775 kg
Shells per gun, main battery: 110
4 - 18.0" / 457 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.72" / 120 mm 282.15 ft / 86.00 m 8.01 ft / 2.44 m
Ends: 1.57" / 40 mm 78.74 ft / 24.00 m 8.01 ft / 2.44 m
26.25 ft / 8.00 m Unarmoured ends
Main Belt covers 112 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.72" / 120 mm 1.97" / 50 mm 3.94" / 100 mm
2nd: 1.57" / 40 mm - -
3rd: 0.79" / 20 mm - -
- Armour deck: 1.18" / 30 mm, Conning tower: 3.94" / 100 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 8 500 ihp / 6 341 Kw = 18.50 kts
Range 4 500nm at 10.00 kts
Bunker at max displacement = 745 tons (100% coal)
Complement:
316 - 411
Cost:
£0.520 million / $2.079 million
Distribution of weights at normal displacement:
Armament: 213 tons, 3.9 %
Armour: 1 095 tons, 20.2 %
- Belts: 492 tons, 9.1 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 191 tons, 3.5 %
- Armour Deck: 387 tons, 7.1 %
- Conning Tower: 26 tons, 0.5 %
Machinery: 1 232 tons, 22.7 %
Hull, fittings & equipment: 2 175 tons, 40.0 %
Fuel, ammunition & stores: 631 tons, 11.6 %
Miscellaneous weights: 85 tons, 1.6 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5 625 lbs / 2 551 Kg = 15.2 x 9.1 " / 230 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.49
Metacentric height 5.6 ft / 1.7 m
Roll period: 12.2 seconds
Steadiness - As gun platform (Average = 50 %): 75 %
- Recoil effect (Restricted arc if above 1.00): 0.17
Seaboat quality (Average = 1.00): 1.34
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.495
Length to Beam Ratio: 5.62 : 1
'Natural speed' for length: 19.68 kts
Power going to wave formation at top speed: 44 %
Trim (Max stability = 0, Max steadiness = 100): 56
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 15.75 ft / 4.80 m
- Forecastle (18 %): 13.12 ft / 4.00 m
- Mid (50 %): 11.48 ft / 3.50 m
- Quarterdeck (17 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 12.23 ft / 3.73 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 111.1 %
- Above water (accommodation/working, high = better): 126.8 %
Waterplane Area: 17 691 Square feet or 1 644 Square metres
Displacement factor (Displacement / loading): 101 %
Structure weight / hull surface area: 98 lbs/sq ft or 477 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.39
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily