czwartek, 30 sierpnia 2012

Brytyjski krążownik pancerny z 1903 r. - 8x234 - 18.03.2012

A tak wygląda wersja krążownika pancernego z działami 190 mm, zamiast dotychczasowych 152 mm. Według navweaps.com, działo 190 mm było opracowane ok. 1903 r., zatem możemy chyba założyć, że możliwe było by jego wejście na uzbrojenie okrętu wodowanego w 1903 r.
  

Black Prince, british armoured cruiser laid down 1902 (Engine 1903)

Displacement:
    14 756 t light; 15 355 t standard; 16 905 t normal; 18 145 t full load

Dimensions: Length overall / water x beam x draught
    535,86 ft / 535,30 ft x 72,57 ft x 26,67 ft (normal load)
    163,33 m / 163,16 m x 22,12 m  x 8,13 m

Armament:
      8 - 9,21" / 234 mm guns (4x2 guns), 390,95lbs / 177,33kg shells, 1902 Model
      Breech loading guns in turrets (on barbettes)
      on centreline ends, evenly spread, 2 raised mounts - superfiring
      6 - 7,48" / 190 mm guns in single mounts, 209,28lbs / 94,93kg shells, 1902 Model
      Breech loading guns in casemate mounts
      on side, all amidships
      8 - 2,99" / 76,0 mm guns in single mounts, 13,39lbs / 6,07kg shells, 1902 Model
      Quick firing guns in casemate mounts
      on side ends, evenly spread
      4 guns in hull casemates - Limited use in heavy seas
    Weight of broadside 4 490 lbs / 2 037 kg
    Shells per gun, main battery: 100
    2 - 18,0" / 457 mm submerged torpedo tubes

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    6,50" / 165 mm    270,51 ft / 82,45 m    12,50 ft / 3,81 m
    Ends:    2,99" / 76 mm    102,46 ft / 31,23 m    10,01 ft / 3,05 m
      162,34 ft / 49,48 m Unarmoured ends
      Main Belt covers 78% of normal length
      Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
        0,79" / 20 mm    134,42 ft / 40,97 m    18,90 ft / 5,76 m

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    7,99" / 203 mm    5,98" / 152 mm        7,99" / 203 mm
    2nd:    5,98" / 152 mm          -                  -
    3rd:    4,02" / 102 mm          -                  -

   - Armour deck: 2,52" / 64 mm, Conning tower: 10,98" / 279 mm

Machinery:
    Coal fired boilers, complex reciprocating steam engines,
    Direct drive, 2 shafts, 31 999 ihp / 23 871 Kw = 22,50 kts
    Range 8 450nm at 10,00 kts
    Bunker at max displacement = 2 790 tons (100% coal)

Complement:
    740 - 963

Cost:
    £1,657 million / $6,626 million

Distribution of weights at normal displacement:
    Armament: 561 tons, 3,3%
    Armour: 3 863 tons, 22,9%
       - Belts: 1 111 tons, 6,6%
       - Torpedo bulkhead: 74 tons, 0,4%
       - Armament: 1 233 tons, 7,3%
       - Armour Deck: 1 289 tons, 7,6%
       - Conning Tower: 156 tons, 0,9%
    Machinery: 4 776 tons, 28,3%
    Hull, fittings & equipment: 5 556 tons, 32,9%
    Fuel, ammunition & stores: 2 149 tons, 12,7%
    Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      12 790 lbs / 5 801 Kg = 32,7 x 9,2 " / 234 mm shells or 1,7 torpedoes
    Stability (Unstable if below 1.00): 1,16
    Metacentric height 4,1 ft / 1,3 m
    Roll period: 15,0 seconds
    Steadiness    - As gun platform (Average = 50 %): 80 %
            - Recoil effect (Restricted arc if above 1.00): 0,66
    Seaboat quality  (Average = 1.00): 1,60

Hull form characteristics:
    Hull has rise forward of midbreak
    Block coefficient: 0,571
    Length to Beam Ratio: 7,38 : 1
    'Natural speed' for length: 23,14 kts
    Power going to wave formation at top speed: 47 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): -15,00 degrees
    Stern overhang: 0,56 ft / 0,17 m
    Freeboard (% = measuring location as a percentage of overall length):
       - Stem:        25,92 ft / 7,90 m
       - Forecastle (14%):    22,44 ft / 6,84 m
       - Mid (67%):        22,44 ft / 6,84 m (16,47 ft / 5,02 m aft of break)
       - Quarterdeck (16%):    16,47 ft / 5,02 m
       - Stern:        17,45 ft / 5,32 m
       - Average freeboard:    20,77 ft / 6,33 m

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 163,9%
        - Above water (accommodation/working, high = better): 149,6%
    Waterplane Area: 27 651 Square feet or 2 569 Square metres
    Displacement factor (Displacement / loading): 94%
    Structure weight / hull surface area: 129 lbs/sq ft or 631 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0,95
        - Longitudinal: 1,60
        - 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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