Armada Cruisers Raider

[Jefgte]

Peru, with the principle "War on the enemy territory is preferable to war on our territory"
decide to built 2 cruisers raider in 1907 & 1910

-Commerce raider & naval night bombardement of enemy coast (industrial sites...) with 150mm guns
-High speed to escape enemy squadron cruisers & 90mm quick firing to repulse torpedo boats
-Great range need for Pacific raid.
-1 Coal and 3 oil fired boilers
-2 observations balloons (warm air) are in board - cable 300m
-60 mines

Amazonas, Peru 3400T Cruiser Raider laid down 1907 (Engine 1909)

Displacement:
   3 400 t light; 3 506 t standard; 4 218 t normal; 4 787 t full load

Dimensions: Length overall / water x beam x draught
   498.69 ft / 498.69 ft x 52.49 ft x 13.30 ft (normal load)
   152.00 m / 152.00 m x 16.00 m  x 4.05 m

Armament:
     2 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1907 Model
     Breech loading guns in deck mounts with hoists
     on centreline, evenly spread
     4 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1907 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, 1907 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 305 lbs / 138 kg
   Shells per gun, main battery: 120
   8 - 18.0" / 457.2 mm above water torpedoes

Armour:
  - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1.18" / 30 mm   334.65 ft / 102.00 m   8.01 ft / 2.44 m
   Ends:   Unarmoured
     Main Belt covers 103 % of normal length

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

  - Armour deck: 0.79" / 20 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 3 shafts, 26 190 shp / 19 538 Kw = 26.97 kts
   Range 12 000nm at 10.00 kts
             8200nm at 12kts
             5870nm at 14kts
             4330nm at 16kts
             3275nm at 18kts
             2520nm at 20kts
            1810nm at 22kts
            1750nm at 26kts
   Bunker at max displacement = 1 281 tons (20% coal)

Complement:
   261 - 340

Cost:
   £0.321 million / $1.283 million

Distribution of weights at normal displacement:
   Armament: 38 tons, 0.9 %
   Armour: 381 tons, 9.0 %
      - Belts: 131 tons, 3.1 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 12 tons, 0.3 %
      - Armour Deck: 238 tons, 5.7 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 1 212 tons, 28.7 %
   Hull, fittings & equipment: 1 668 tons, 39.5 %
   Fuel, ammunition & stores: 818 tons, 19.4 %
   Miscellaneous weights: 100 tons, 2.4 %
                   25 Tons for high rangefinders
                   60 mines
                   15 tons for 2 observation baloons
                   10 tons for normal reserves very long cruise
                   100 tons overloaded for extra reserves very long cruise

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     5 977 lbs / 2 711 Kg = 55.3 x 6.0 " / 152 mm shells or 1.2 torpedoes
   Stability (Unstable if below 1.00): 1.50
   Metacentric height 3.8 ft / 1.2 m
   Roll period: 11.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 73 %
         - Recoil effect (Restricted arc if above 1.00): 0.07
   Seaboat quality  (Average = 1.00): 1.32

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.424
   Length to Beam Ratio: 9.50 : 1
   'Natural speed' for length: 22.33 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 55
   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:      21.98 ft / 6.70 m
      - Forecastle (18 %):   15.42 ft / 4.70 m
      - Mid (40 %):      12.80 ft / 3.90 m
      - Quarterdeck (18 %):   12.80 ft / 3.90 m
      - Stern:      12.80 ft / 3.90 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): 103.1 %
      - Above water (accommodation/working, high = better): 133.7 %
   Waterplane Area: 16 366 Square feet or 1 520 Square metres
   Displacement factor (Displacement / loading): 131 %
   Structure weight / hull surface area: 71 lbs/sq ft or 346 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.00
      - Longitudinal: 0.99
      - 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

[Jefgte]

Tarapaca, Peru 3400T Cruiser Raider laid down 1910 - in service 1912


Displacement:
   3 400 t light; 3 507 t standard; 4 211 t normal; 4 774 t full load

Dimensions: Length overall / water x beam x draught
   498.69 ft / 498.69 ft x 52.49 ft x 13.28 ft (normal load)
   152.00 m / 152.00 m x 16.00 m  x 4.05 m

Armament:
      2 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1910 Model
     Breech loading guns in deck mounts with hoists
     on centreline, evenly spread
      4 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1910 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, 1910 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 305 lbs / 138 kg
   Shells per gun, main battery: 120
   8 - 18.0" / 457.2 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1.18" / 30 mm   334.65 ft / 102.00 m   8.01 ft / 2.44 m
   Ends:   Unarmoured
     Main Belt covers 103 % of normal length

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

   - Armour deck: 0.79" / 20 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 3 shafts, 28 000 shp / 20 888 Kw = 27.45 kts
   Range 12 500nm at 10.00 kts
   Bunker at max displacement = 1 267 tons (20% coal)

Complement:
   260 - 339

Cost:
   £0.316 million / $1.264 million

Distribution of weights at normal displacement:
   Armament: 38 tons, 0.9 %
   Armour: 381 tons, 9.0 %
      - Belts: 131 tons, 3.1 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 12 tons, 0.3 %
      - Armour Deck: 238 tons, 5.7 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 1 178 tons, 28.0 %
   Hull, fittings & equipment: 1 673 tons, 39.7 %
   Fuel, ammunition & stores: 810 tons, 19.2 %
   Miscellaneous weights: 130 tons, 3.1 %
                      25 Tons for high rangefinders
                      70 mines
                      15 tons for 2 observation baloons (warm air) - cable 300m
                      20 tons for normal reserves for very long cruise
                      100 tons overloaded for extra reserves very long cruise

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     6 137 lbs / 2 784 Kg = 56.8 x 6.0 " / 152 mm shells or 1.2 torpedoes
   Stability (Unstable if below 1.00): 1.48
   Metacentric height 3.7 ft / 1.1 m
   Roll period: 11.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.07
   Seaboat quality  (Average = 1.00): 1.27

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.424
   Length to Beam Ratio: 9.50 : 1
   'Natural speed' for length: 22.33 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 55
   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:      21.98 ft / 6.70 m
      - Forecastle (18 %):   15.42 ft / 4.70 m
      - Mid (40 %):      12.80 ft / 3.90 m
      - Quarterdeck (18 %):   12.80 ft / 3.90 m
      - Stern:      12.80 ft / 3.90 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): 101.5 %
      - Above water (accommodation/working, high = better): 134.3 %
   Waterplane Area: 16 366 Square feet or 1 520 Square metres
   Displacement factor (Displacement / loading): 133 %
   Structure weight / hull surface area: 71 lbs/sq ft or 347 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.00
      - Longitudinal: 1.00
      - 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