Pancernik dla Peru

 Swego czasu pojawiły się na blogu dwa warianty pancernika zaprojektowanego przez Yuzuru Hiragę – pełnoskalowy dla Japonii (http://springsharp.blogspot.com/2020/07/pancernik-hiragi.html) oraz mniejszy dla Mandżukuo (http://springsharp.blogspot.com/2020/09/may-pancernik-dla-mandzukuo.html). Kolejny z „małych” pancerników Hiragi jaki postanowiłem zaprezentować, to wariant 20.000-tonowy z 6 działami 360 mm. Ten okręt trafia do floty Peru, która nigdy nie dorobiła się pancernika a miała za sąsiada np. Chile z drednotem Almirante Latorre uzbrojonym w 14-calówki. Więc przeciwwaga w postaci okrętu dość małego, ale jednak dużo nowocześniejszego, lepiej opancerzonego i uzbrojonego w działa podobnego kalibru, wydaje się być jak najbardziej na miejscu:)

 

Atahualpa, peruvian battleship laid down 1935 (Engine 1936)

Displacement:
    19 762 t light; 20 859 t standard; 22 298 t normal; 23 449 t full load

Dimensions: Length overall / water x beam x draught
    616,98 ft / 607,02 ft x 88,71 ft x 26,64 ft (normal load)
    188,06 m / 185,02 m x 27,04 m  x 8,12 m

Armament:
      6 - 14,17" / 360 mm guns (2x3 guns), 1 423,56lbs / 645,72kg shells, 1934 Model
      Breech loading guns in turrets (on barbettes)
      on centreline ends, evenly spread
      12 - 5,51" / 140 mm guns in single mounts, 83,72lbs / 37,97kg shells, 1933 Model
      Quick firing guns in casemate mounts
      on side, all amidships
      12 guns in hull casemates - Limited use in heavy seas
      4 - 5,51" / 140 mm guns (2x2 guns), 83,72lbs / 37,97kg shells, 1933 Model
      Quick firing guns in turrets (on barbettes)
      on side, all amidships
      8 - 4,72" / 120 mm guns (4x2 guns), 52,72lbs / 23,91kg shells, 1921 Model
      Anti-aircraft guns in deck mounts
      on centreline, all amidships, all raised mounts - superfiring
      4 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1923 Model
      Anti-aircraft guns in deck mounts
      on side, all amidships, all raised mounts - superfiring
    Weight of broadside 10 310 lbs / 4 677 kg
    Shells per gun, main battery: 110
    2 - 21,0" / 533 mm submerged torpedo tubes

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    12,5" / 318 mm    276,44 ft / 84,26 m    13,32 ft / 4,06 m
    Ends:    Unarmoured
    Upper:    11,0" / 279 mm    258,99 ft / 78,94 m    4,99 ft / 1,52 m
      Main Belt covers 70% of normal length
      Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
        2,24" / 57 mm    276,44 ft / 84,26 m    24,74 ft / 7,54 m

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    13,5" / 343 mm    11,0" / 279 mm        13,5" / 343 mm
    2nd:    5,98" / 152 mm          -                  -
    3rd:    5,00" / 127 mm    2,99" / 76 mm        5,00" / 127 mm
    4th:    1,85" / 47 mm    0,98" / 25 mm              -

   - Armour deck: 2,68" / 68 mm (6,00" / 152 mm over citadel), Conning tower: 14,02" / 356 mm

Machinery:
    Oil fired boilers, steam turbines,
    Geared drive, 4 shafts, 64 118 shp / 47 832 Kw = 26,00 kts
    Range 8 400nm at 14,00 kts
    Bunker at max displacement = 2 590 tons

Complement:
    912 - 1 186

Cost:
    £10,315 million / $41,260 million

Distribution of weights at normal displacement:
    Armament: 1 289 tons, 5,8%
    Armour: 7 612 tons, 34,1%
       - Belts: 2 850 tons, 12,8%
       - Torpedo bulkhead: 568 tons, 2,5%
       - Armament: 2 104 tons, 9,4%
       - Armour Deck: 1 851 tons, 8,3%
       - Conning Tower: 239 tons, 1,1%
    Machinery: 1 799 tons, 8,1%
    Hull, fittings & equipment: 9 012 tons, 40,4%
    Fuel, ammunition & stores: 2 536 tons, 11,4%
    Miscellaneous weights: 50 tons, 0,2%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      32 006 lbs / 14 518 Kg = 22,5 x 14,2 " / 360 mm shells or 5,3 torpedoes
    Stability (Unstable if below 1.00): 1,14
    Metacentric height 5,3 ft / 1,6 m
    Roll period: 16,1 seconds
    Steadiness    - As gun platform (Average = 50 %): 64 %
            - Recoil effect (Restricted arc if above 1.00): 0,58
    Seaboat quality  (Average = 1.00): 1,27

Hull form characteristics:
    Hull has a flush deck
    Block coefficient: 0,544
    Length to Beam Ratio: 6,84 : 1
    'Natural speed' for length: 24,64 kts
    Power going to wave formation at top speed: 51 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): 19,00 degrees
    Stern overhang: 0,00 ft / 0,00 m
    Freeboard (% = measuring location as a percentage of overall length):
       - Stem:        28,94 ft / 8,82 m
       - Forecastle (30%):    20,93 ft / 6,38 m
       - Mid (50%):        19,95 ft / 6,08 m
       - Quarterdeck (28%):    17,45 ft / 5,32 m
       - Stern:        17,95 ft / 5,47 m
       - Average freeboard:    20,38 ft / 6,21 m

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 92,6%
        - Above water (accommodation/working, high = better): 152,5%
    Waterplane Area: 37 372 Square feet or 3 472 Square metres
    Displacement factor (Displacement / loading): 103%
    Structure weight / hull surface area: 170 lbs/sq ft or 829 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0,94
        - Longitudinal: 1,66
        - Overall: 1,00
    Hull space for machinery, storage, compartmentation is adequate
    Room for accommodation and workspaces is excellent
    Good seaboat, rides out heavy weather easily

1 catapult, 1 seaplane