Scout cruisers for Peru

[Jefgte]

1st class of Scout cruisers Ld 1897-1898
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2000T SC for BB, peru Scout Cruiser laid down 1897 (Engine 1898)

Displacement:
   2 000 t light; 2 073 t standard; 2 321 t normal; 2 520 t full load

Dimensions: Length overall / water x beam x draught
   393.70 ft / 393.70 ft x 43.96 ft x 11.07 ft (normal load)
   120.00 m / 120.00 m x 13.40 m  x 3.37 m

Armament:
      2 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1897 Model
     Breech loading guns in deck mounts
     on centreline, evenly spread
      4 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1897 Model
     Breech loading guns in deck mounts
     on side, evenly spread
      4 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1897 Model
     Breech loading guns in deck mounts
     on side, all amidships
      2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1897 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 284 lbs / 129 kg
   Shells per gun, main battery: 140
   2 - 18.0" / 457.2 mm submerged torpedo tubes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm         -               -
   2nd:   0.79" / 20 mm         -               -
   3rd:   0.79" / 20 mm         -               -
   4th:   0.50" / 13 mm         -               -

   - Armour deck: 0.98" / 25 mm, Conning tower: 0.79" / 20 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 5 000 ihp / 3 730 Kw = 18.77 kts
   Range 4 000nm at 10.00 kts
   Bunker at max displacement = 447 tons (100% coal)

Complement:
   166 - 217

Cost:
   £0.213 million / $0.851 million

Distribution of weights at normal displacement:
   Armament: 35 tons, 1.5 %
   Armour: 216 tons, 9.3 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 16 tons, 0.7 %
      - Armour Deck: 197 tons, 8.5 %
      - Conning Tower: 3 tons, 0.1 %
   Machinery: 806 tons, 34.7 %
   Hull, fittings & equipment: 927 tons, 40.0 %
   Fuel, ammunition & stores: 321 tons, 13.8 %
   Miscellaneous weights: 15 tons, 0.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     2 249 lbs / 1 020 Kg = 42.7 x 4.7 " / 120 mm shells or 0.7 torpedoes
   Stability (Unstable if below 1.00): 1.59
   Metacentric height 3.2 ft / 1.0 m
   Roll period: 10.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 80 %
         - Recoil effect (Restricted arc if above 1.00): 0.08
   Seaboat quality  (Average = 1.00): 1.60

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.424
   Length to Beam Ratio: 8.96 : 1
   'Natural speed' for length: 19.84 kts
   Power going to wave formation at top speed: 36 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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:      15.09 ft / 4.60 m
      - Forecastle (18 %):   13.12 ft / 4.00 m
      - Mid (30 %):      12.14 ft / 3.70 m
      - Quarterdeck (18 %):   12.14 ft / 3.70 m
      - Stern:      12.14 ft / 3.70 m
      - Average freeboard:   12.51 ft / 3.81 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 130.7 %
      - Above water (accommodation/working, high = better): 151.9 %
   Waterplane Area: 10 821 Square feet or 1 005 Square metres
   Displacement factor (Displacement / loading): 109 %
   Structure weight / hull surface area: 59 lbs/sq ft or 286 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.18
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather


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The second class is the same type but 2350T:
- Update for the 4 side 90mm guns to 120mm
- Torpedo tubes on the deck
- Add a light belt

Ld 1899-1900-1901-1902

2350T SC for BB, peru Scout Cruiser laid down 1899 (Engine 1900)

Displacement:
   2 350 t light; 2 444 t standard; 2 711 t normal; 2 924 t full load

Dimensions: Length overall / water x beam x draught
   419.95 ft / 419.95 ft x 46.59 ft x 11.44 ft (normal load)
   128.00 m / 128.00 m x 14.20 m  x 3.49 m

Armament:
      2 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1899 Model
     Breech loading guns in deck mounts
     on centreline, evenly spread
      4 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.92kg shells, 1899 Model
     Breech loading guns in deck mounts
     on side, evenly spread
      4 - 3.54" / 90.0 mm guns (2x2 guns), 22.24lbs / 10.09kg shells, 1899 Model
     Breech loading guns in deck mounts
     on side, all amidships
      2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1899 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 405 lbs / 184 kg
   Shells per gun, main battery: 150
   2 - 18.0" / 457.2 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   0.98" / 25 mm   337.93 ft / 103.00 m   6.56 ft / 2.00 m
   Ends:   Unarmoured
     Main Belt covers 124 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm         -               -
   2nd:   0.79" / 20 mm         -               -
   3rd:   0.79" / 20 mm         -               -
   4th:   0.50" / 13 mm         -               -

   - Armour deck: 0.98" / 25 mm, Conning tower: 0.79" / 20 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 5 772 ihp / 4 306 Kw = 19.09 kts
   Range 4 000nm at 10.00 kts
   Bunker at max displacement = 480 tons (100% coal)

Complement:
   187 - 244

Cost:
   £0.251 million / $1.004 million

Distribution of weights at normal displacement:
   Armament: 51 tons, 1.9 %
   Armour: 332 tons, 12.2 %
      - Belts: 88 tons, 3.2 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 18 tons, 0.6 %
      - Armour Deck: 223 tons, 8.2 %
      - Conning Tower: 3 tons, 0.1 %
   Machinery: 902 tons, 33.3 %
   Hull, fittings & equipment: 1 051 tons, 38.8 %
   Fuel, ammunition & stores: 361 tons, 13.3 %
   Miscellaneous weights: 15 tons, 0.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     2 885 lbs / 1 309 Kg = 54.7 x 4.7 " / 120 mm shells or 0.8 torpedoes
   Stability (Unstable if below 1.00): 1.65
   Metacentric height 3.7 ft / 1.1 m
   Roll period: 10.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 73 %
         - Recoil effect (Restricted arc if above 1.00): 0.08
   Seaboat quality  (Average = 1.00): 1.46

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.424
   Length to Beam Ratio: 9.01 : 1
   'Natural speed' for length: 20.49 kts
   Power going to wave formation at top speed: 35 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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:      14.44 ft / 4.40 m
      - Forecastle (18 %):   12.47 ft / 3.80 m
      - Mid (50 %):      11.48 ft / 3.50 m
      - Quarterdeck (18 %):   11.48 ft / 3.50 m
      - Stern:      11.48 ft / 3.50 m
      - Average freeboard:   11.95 ft / 3.64 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 123.2 %
      - Above water (accommodation/working, high = better): 138.6 %
   Waterplane Area: 12 232 Square feet or 1 136 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 61 lbs/sq ft or 297 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.00
      - Longitudinal: 1.01
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

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The 3rd class of Scout cruisers (Ld 1903-1905 & 1909-1912)
are 3500T

3500T SC for BB, Peru Cruiser laid down 1903 (Engine 1904)

Displacement:
   3 500 t light; 3 647 t standard; 4 018 t normal; 4 314 t full load

Dimensions: Length overall / water x beam x draught
   472.44 ft / 472.44 ft x 52.49 ft x 13.37 ft (normal load)
   144.00 m / 144.00 m x 16.00 m  x 4.08 m

Armament:
      2 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1903 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread
      8 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1903 Model
     Breech loading guns in deck mounts
     on side, evenly spread
      4 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1903 Model
     Quick firing guns in deck mounts
     on centreline, all amidships
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1903 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 692 lbs / 314 kg
   Shells per gun, main battery: 150
   2 - 18.0" / 457 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1.57" / 40 mm   400.26 ft / 122.00 m   8.01 ft / 2.44 m
   Ends:   Unarmoured
     Main Belt covers 130 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm         -               -
   2nd:   0.79" / 20 mm         -               -
   3rd:   0.79" / 20 mm         -               -
   4th:   0.50" / 13 mm         -               -

   - Armour deck: 0.79" / 20 mm, Conning tower: 1.57" / 40 mm

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 9 666 ihp / 7 211 Kw = 20.74 kts
   Range 5 000nm at 10.00 kts
   Bunker at max displacement = 667 tons (80% coal)

Complement:
   252 - 328

Cost:
   £0.390 million / $1.561 million

Distribution of weights at normal displacement:
   Armament: 87 tons, 2.2 %
   Armour: 463 tons, 11.5 %
      - Belts: 202 tons, 5.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 27 tons, 0.7 %
      - Armour Deck: 226 tons, 5.6 %
      - Conning Tower: 9 tons, 0.2 %
   Machinery: 1 394 tons, 34.7 %
   Hull, fittings & equipment: 1 527 tons, 38.0 %
   Fuel, ammunition & stores: 518 tons, 12.9 %
   Miscellaneous weights: 30 tons, 0.7 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3 762 lbs / 1 707 Kg = 34.8 x 6.0 " / 152 mm shells or 0.8 torpedoes
   Stability (Unstable if below 1.00): 1.65
   Metacentric height 4.4 ft / 1.3 m
   Roll period: 10.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 77 %
         - Recoil effect (Restricted arc if above 1.00): 0.09
   Seaboat quality  (Average = 1.00): 1.53

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.424
   Length to Beam Ratio: 9.00 : 1
   'Natural speed' for length: 21.74 kts
   Power going to wave formation at top speed: 36 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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:      16.08 ft / 4.90 m
      - Forecastle (18 %):   14.11 ft / 4.30 m
      - Mid (50 %):      13.12 ft / 4.00 m
      - Quarterdeck (18 %):   13.12 ft / 4.00 m
      - Stern:      13.12 ft / 4.00 m
      - Average freeboard:   13.59 ft / 4.14 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 130.1 %
      - Above water (accommodation/working, high = better): 150.3 %
   Waterplane Area: 15 505 Square feet or 1 440 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 69 lbs/sq ft or 337 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.99
      - Longitudinal: 1.05
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather



Jef  ;)

[Borys]

Ahoj!
IMO very nice. Good for the epoch, excellent for protecting your valuable birdshit islands and anchovies fishery waters from poachers.
But I'd make the 2350 tonne class also PC, not BC.

Borys