środa, 29 sierpnia 2012

Idealny krążownik waszyngtoński? - 24.06.2010

Przymiarka do zbudowania idealnego krążownika waszyngtońskiego. Bardzo dobrze jak na tą klasę okrętu opancerzony, kosztem zmniejszenia artylerii do 6 dział 203 mm w dwóch wieżach, niezbyt szybki – ale to nie wada, bo dzięki opancerzeniu nie musi się specjalnie obawiać innych „blaszanek”.

Davout, french heavy cruiser laid down 1935 (Engine 1937)

Displacement:
    10 046 t light; 10 494 t standard; 11 628 t normal; 12 536 t full load

Dimensions: Length overall / water x beam x draught
    594,82 ft / 594,82 ft x 62,99 ft x 20,34 ft (normal load)
    181,30 m / 181,30 m x 19,20 m  x 6,20 m

Armament:
      6 - 7,99" / 203 mm guns (2x3 guns), 255,24lbs / 115,77kg shells, 1935 Model
      Breech loading guns in turrets (on barbettes)
      on centreline ends, evenly spread
      8 - 3,94" / 100 mm guns (4x2 guns), 30,51lbs / 13,84kg shells, 1935 Model
      Dual purpose guns in deck mounts with hoists
      on side, all amidships
      2 - 3,94" / 100 mm guns (1x2 guns), 30,51lbs / 13,84kg shells, 1935 Model
      Dual purpose guns in a deck mount with hoist
      on centreline aft
      12 - 1,46" / 37,0 mm guns (6x2 guns), 1,55lbs / 0,70kg shells, 1935 Model
      Anti-aircraft guns in deck mounts
      on side, all amidships
    Weight of broadside 1 855 lbs / 841 kg
    Shells per gun, main battery: 200

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    7,87" / 200 mm    259,19 ft / 79,00 m    13,12 ft / 4,00 m
    Ends:    Unarmoured
      Main Belt covers 67% of normal length
      Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
        1,57" / 40 mm    393,70 ft / 120,00 m    17,39 ft / 5,30 m

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    9,84" / 250 mm    7,09" / 180 mm        9,06" / 230 mm

   - Armour deck: 2,76" / 70 mm, Conning tower: 7,87" / 200 mm

Machinery:
    Oil fired boilers, steam turbines,
    Geared drive, 3 shafts, 73 044 shp / 54 491 Kw = 30,00 kts
    Range 10 000nm at 14,00 kts
    Bunker at max displacement = 2 041 tons

Complement:
    559 - 727

Cost:
    £4,225 million / $16,898 million

Distribution of weights at normal displacement:
    Armament: 232 tons, 2,0%
    Armour: 3 555 tons, 30,6%
       - Belts: 1 206 tons, 10,4%
       - Torpedo bulkhead: 399 tons, 3,4%
       - Armament: 550 tons, 4,7%
       - Armour Deck: 1 313 tons, 11,3%
       - Conning Tower: 87 tons, 0,7%
    Machinery: 2 025 tons, 17,4%
    Hull, fittings & equipment: 4 234 tons, 36,4%
    Fuel, ammunition & stores: 1 583 tons, 13,6%
    Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      18 719 lbs / 8 491 Kg = 73,3 x 8,0 " / 203 mm shells or 3,1 torpedoes
    Stability (Unstable if below 1.00): 1,23
    Metacentric height 3,6 ft / 1,1 m
    Roll period: 13,9 seconds
    Steadiness    - As gun platform (Average = 50 %): 56 %
            - Recoil effect (Restricted arc if above 1.00): 0,31
    Seaboat quality  (Average = 1.00): 1,12

Hull form characteristics:
    Hull has a flush deck
    Block coefficient: 0,534
    Length to Beam Ratio: 9,44 : 1
    'Natural speed' for length: 24,39 kts
    Power going to wave formation at top speed: 54 %
    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:        26,57 ft / 8,10 m
       - Forecastle (20%):    18,70 ft / 5,70 m
       - Mid (50%):        17,72 ft / 5,40 m
       - Quarterdeck (15%):    17,72 ft / 5,40 m
       - Stern:        18,37 ft / 5,60 m
       - Average freeboard:    18,74 ft / 5,71 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 107,3%
        - Above water (accommodation/working, high = better): 157,5%
    Waterplane Area: 25 761 Square feet or 2 393 Square metres
    Displacement factor (Displacement / loading): 123%
    Structure weight / hull surface area: 107 lbs/sq ft or 522 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0,98
        - Longitudinal: 1,17
        - Overall: 1,00
    Hull space for machinery, storage, compartmentation is adequate
    Room for accommodation and workspaces is excellent

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