Viracocha Inca - LD 1901 - in service 1904 - refit 1912-to Greece 1914
Pachacutec - LD 1903 - In service 1906
(http://img171.imageshack.us/img171/7816/ec4700tyj5.jpg) (http://imageshack.us)
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 - in Service 1908
Yahuar Huacac - LD 1908 - In service 1911
(http://img391.imageshack.us/img391/994/ec4800tbb8.jpg) (http://imageshack.us)
4800T, Peru escort cruiser laid down 1905
4800T, Peru Protected 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
Escort cruiser Tupac Yupanqui is made to work with Battleship Atahualpa (ld 1911).
Nickname of the ship: "la sombra de Atahualpa"
(http://img391.imageshack.us/img391/753/ec6000tuk9.jpg) (http://imageshack.us)
Tupac Yupanqui - laid down 1911H1 - in service 1912H2
------------------------------------------------------------------------------
Sept 1912 - minor adjustements in the shipyards at the end of the building.
- 4x120mm take the place of the 10x90mm
- Miscellaneous weights: 160 tons, was 150tons
------------------------------------------------------------------------------
After adjustements
6000T cruiser, Peru Escort Cruiser laid down 1911
Displacement:
6 000 t light; 6 400 t standard; 7 101 t normal; 7 663 t full load
Dimensions: Length overall / water x beam x draught
390.42 ft / 390.42 ft x 71.52 ft x 17.28 ft (normal load)
119.00 m / 119.00 m x 21.80 m x 5.27 m
Armament:
4 - 12.00" / 305 mm guns (2x2 guns), 864.00lbs / 391.90kg shells, 1911 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
8 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1911 Model
Breech loading guns in casemate mounts
on side, evenly spread
4 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.92kg shells, 1911 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1911 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 4 089 lbs / 1 855 kg
Shells per gun, main battery: 110
4 - 21.0" / 533 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.72" / 120 mm 246.06 ft / 75.00 m 9.19 ft / 2.80 m
Ends: 2.36" / 60 mm 131.23 ft / 40.00 m 8.01 ft / 2.44 m
13.12 ft / 4.00 m Unarmoured ends
Main Belt covers 97 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 5.51" / 140 mm 1.57" / 40 mm 3.94" / 100 mm
2nd: 1.57" / 40 mm - -
3rd: 0.79" / 20 mm - -
4th: 0.50" / 13 mm - -
- Armour deck: 1.18" / 30 mm, Conning tower: 4.72" / 120 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 18 000 shp / 13 428 Kw = 21.51 kts
Range 7 000nm at 12.00 kts
Bunker at max displacement = 1 263 tons
Complement:
386 - 502
Cost:
£0.742 million / $2.966 million
Distribution of weights at normal displacement:
Armament: 511 tons, 7.2 %
Armour: 1 321 tons, 18.6 %
- Belts: 568 tons, 8.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 304 tons, 4.3 %
- Armour Deck: 412 tons, 5.8 %
- Conning Tower: 38 tons, 0.5 %
Machinery: 730 tons, 10.3 %
Hull, fittings & equipment: 3 277 tons, 46.1 %
Fuel, ammunition & stores: 1 102 tons, 15.5 %
Miscellaneous weights: 160 tons, 2.3 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
8 621 lbs / 3 910 Kg = 10.0 x 12.0 " / 305 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 4.2 ft / 1.3 m
Roll period: 14.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.50
Seaboat quality (Average = 1.00): 1.16
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.515
Length to Beam Ratio: 5.46 : 1
'Natural speed' for length: 19.76 kts
Power going to wave formation at top speed: 54 %
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: 22.31 ft / 6.80 m
- Forecastle (20 %): 18.04 ft / 5.50 m
- Mid (40 %): 14.44 ft / 4.40 m
- Quarterdeck (20 %): 14.44 ft / 4.40 m
- Stern: 14.44 ft / 4.40 m
- Average freeboard: 15.86 ft / 4.83 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 96.0 %
- Above water (accommodation/working, high = better): 140.0 %
Waterplane Area: 18 863 Square feet or 1 752 Square metres
Displacement factor (Displacement / loading): 101 %
Structure weight / hull surface area: 129 lbs/sq ft or 628 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.91
- Longitudinal: 2.30
- 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
------------------------
Before adjustements
6000T cruiser, Peru Escort Cruiser laid down 1911
Displacement:
6 000 t light; 6 402 t standard; 7 104 t normal; 7 666 t full load
Dimensions: Length overall / water x beam x draught
390.42 ft / 390.42 ft x 71.52 ft x 17.29 ft (normal load)
119.00 m / 119.00 m x 21.80 m x 5.27 m
Armament:
4 - 12.00" / 305 mm guns (2x2 guns), 864.00lbs / 391.90kg shells, 1911 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
8 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1911 Model
Breech loading guns in casemate mounts
on side, evenly spread
10 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1911 Model
Quick firing guns in deck mounts
on side, evenly spread, all raised mounts
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1911 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 4 100 lbs / 1 860 kg
Shells per gun, main battery: 110
4 - 21.0" / 457 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.72" / 120 mm 246.06 ft / 75.00 m 9.19 ft / 2.80 m
Ends: 2.36" / 60 mm 131.23 ft / 40.00 m 8.01 ft / 2.44 m
13.12 ft / 4.00 m Unarmoured ends
Main Belt covers 97 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 5.51" / 140 mm 1.57" / 40 mm 3.94" / 100 mm
2nd: 1.57" / 40 mm - -
3rd: 0.79" / 20 mm - -
4th: 0.50" / 13 mm - -
- Armour deck: 1.18" / 30 mm, Conning tower: 4.72" / 120 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 18 000 shp / 13 428 Kw = 21.51 kts
Range 7 000nm at 12.00 kts
Bunker at max displacement = 1 263 tons
Complement:
386 - 502
Cost:
£0.743 million / $2.971 million
Distribution of weights at normal displacement:
Armament: 513 tons, 7.2 %
Armour: 1 327 tons, 18.7 %
- Belts: 568 tons, 8.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 310 tons, 4.4 %
- Armour Deck: 412 tons, 5.8 %
- Conning Tower: 38 tons, 0.5 %
Machinery: 731 tons, 10.3 %
Hull, fittings & equipment: 3 280 tons, 46.2 %
Fuel, ammunition & stores: 1 104 tons, 15.5 %
Miscellaneous weights: 150 tons, 2.1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
8 633 lbs / 3 916 Kg = 10.0 x 12.0 " / 305 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 4.2 ft / 1.3 m
Roll period: 14.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.50
Seaboat quality (Average = 1.00): 1.16
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.515
Length to Beam Ratio: 5.46 : 1
'Natural speed' for length: 19.76 kts
Power going to wave formation at top speed: 54 %
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: 22.31 ft / 6.80 m
- Forecastle (20 %): 18.04 ft / 5.50 m
- Mid (40 %): 14.44 ft / 4.40 m
- Quarterdeck (20 %): 14.44 ft / 4.40 m
- Stern: 14.44 ft / 4.40 m
- Average freeboard: 15.86 ft / 4.83 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 96.0 %
- Above water (accommodation/working, high = better): 140.0 %
Waterplane Area: 18 863 Square feet or 1 752 Square metres
Displacement factor (Displacement / loading): 101 %
Structure weight / hull surface area: 129 lbs/sq ft or 628 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.91
- Longitudinal: 2.30
- 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