Kolejne pancerniki dla japońskiej MW

Kontynuując temat japońskich pancerników francuskiej proweniencji, rozpoczęty postem z 28 lipca, prezentuję dziś kolejną parę okrętów dla japońskiej MW. Podobnie jak poprzednio, jest to eksportowa adaptacja jednego z niezrealizowanych autentycznych francuskich projektów z lat 80-tych XX w., które swego czasu na forum shipbuket.com zwizualizował Gollevainen. Jak nietrudno się zorientować, jest to jeden ze wstępnych projektów pancernika Hoche. Opracował go w 1883 r. inż. Huin i ponoć był to już czwarta wersja projektu tego okrętu (jak widać po dacie – we Francji istniał zwyczaj zmiany projektu w trakcie budowy). Okręt jest uzbrojony w 2 działa kal. 340 mm w wieżach działowych i 2 kal. 274 mm w otwartych barbetach, obydwa modele o dłuższych lufach L/29. Nadal jest wyposażony w szczątkowe ożaglowanie w postaci żagli gaflowych na trzech masztach i sztaksla, co mieści się jak najbardziej w realiach połowy lat 80-tych XIX w. a także posiada wydatny taran poniżej linii wodnej.

Mikawa, japanese battleship laid down 1884 (Engine 1885)

Displacement:
    8 814 t light; 9 211 t standard; 9 815 t normal; 10 298 t full load

Dimensions: Length overall / water x beam x draught
    343,54 ft / 343,54 ft x 66,21 ft x 25,95 ft (normal load)
    104,71 m / 104,71 m x 20,18 m  x 7,91 m

Armament:
      2 - 13,39" / 340 mm guns in single mounts, 1 037,34lbs / 470,53kg shells, 1881 Model
      Breech loading guns in turrets (on barbettes)
      on centreline ends, evenly spread
      2 - 10,79" / 274 mm guns in single mounts, 542,92lbs / 246,26kg shells, 1881 Model
      Breech loading guns in open barbettes 
      on side, all amidships, all raised mounts
      14 - 5,43" / 138 mm guns in single mounts, 72,97lbs / 33,10kg shells, 1884 Model
      Quick firing guns in broadside mounts 
      on side, all amidships
      8 - 1,85" / 47,0 mm guns in single mounts, 2,93lbs / 1,33kg shells, 1885 Model
      Quick firing guns in deck mounts 
      on side, all amidships, all raised mounts - superfiring
      6 - 1,46" / 37,0 mm guns in single mounts, 1,43lbs / 0,65kg shells, 1885 Model
      Quick firing guns in deck mounts 
      on centreline, evenly spread, all raised mounts
    Weight of broadside 4 214 lbs / 1 911 kg
    Shells per gun, main battery: 80
    5 - 15,0" / 380 mm submerged torpedo tubes

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    17,7" / 450 mm    157,05 ft / 47,87 m    7,51 ft / 2,29 m
    Ends:    9,84" / 250 mm    186,45 ft / 56,83 m    7,51 ft / 2,29 m
      Main Belt covers 70% of normal length
      Main belt does not fully cover magazines and engineering spaces

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    15,7" / 400 mm    9,84" / 250 mm        15,7" / 400 mm
    2nd:          -              -            15,7" / 400 mm
    3rd:    5,91" / 150 mm          -                  -

   - Armour deck: 1,89" / 48 mm (2,36" / 60 mm over citadel, 1,50" / 38 mm over ends), Conning tower: 11,81" / 300 mm

Machinery:
    Coal fired boilers, complex reciprocating steam engines, 
    Direct drive, 2 shafts, 6 014 ihp / 4 486 Kw = 15,00 kts
    Range 4 500nm at 8,50 kts
    Bunker at max displacement = 1 087 tons (100% coal)

Complement:
    492 - 640

Cost:
    £0,915 million / $3,658 million

Distribution of weights at normal displacement:
    Armament: 527 tons, 5,4%
    Armour: 3 503 tons, 35,7%
       - Belts: 1 550 tons, 15,8%
       - Torpedo bulkhead: 0 tons, 0,0%
       - Armament: 1 265 tons, 12,9%
       - Armour Deck: 572 tons, 5,8%
       - Conning Tower: 117 tons, 1,2%
    Machinery: 1 169 tons, 11,9%
    Hull, fittings & equipment: 3 439 tons, 35,0%
    Fuel, ammunition & stores: 1 001 tons, 10,2%
    Miscellaneous weights: 176 tons, 1,8%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      8 197 lbs / 3 718 Kg = 7,5 x 13,4 " / 340 mm shells or 1,5 torpedoes
    Stability (Unstable if below 1.00): 1,08
    Metacentric height 3,1 ft / 0,9 m
    Roll period: 15,8 seconds
    Steadiness    - As gun platform (Average = 50 %): 61 %
            - Recoil effect (Restricted arc if above 1.00): 0,41
    Seaboat quality  (Average = 1.00): 1,23

Hull form characteristics:
    Hull has a flush deck
    Block coefficient: 0,582
    Length to Beam Ratio: 5,19 : 1
    'Natural speed' for length: 18,53 kts
    Power going to wave formation at top speed: 43 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): -58,00 degrees
    Stern overhang: 0,00 ft / 0,00 m
    Freeboard (% = measuring location as a percentage of overall length):
       - Stem:        12,96 ft / 3,95 m
       - Forecastle (20%):    11,98 ft / 3,65 m
       - Mid (50%):        10,96 ft / 3,34 m
       - Quarterdeck (21%):    10,47 ft / 3,19 m
       - Stern:        10,47 ft / 3,19 m
       - Average freeboard:    11,22 ft / 3,42 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 86,4%
        - Above water (accommodation/working, high = better): 70,2%
    Waterplane Area: 16 357 Square feet or 1 520 Square metres
    Displacement factor (Displacement / loading): 96%
    Structure weight / hull surface area: 147 lbs/sq ft or 717 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0,93
        - Longitudinal: 2,11
        - Overall: 1,01
    Hull space for machinery, storage, compartmentation is adequate
    Room for accommodation and workspaces is cramped
    Good seaboat, rides out heavy weather easily

Mikawa (1885)
Mutsu (1886)