HMS Perfection - 14.12.2010

Niniejszy okręt to moja wizja HMS Perfection – czyli pierwszej przymiarki lorda Fishera do super-krążownika pancernego, która to idea zaowocowała później powstaniem Invincible’a i kolejnych krążowników  liniowych. W 1902 r., jeszcze jako dowódca floty śródziemnomorskiej proponował on budowę wielkiego krążownika pancernego, większego od ówczesnych pancerników(wyporność 16000 ton), uzbrojonego w 4 działa 234 mm i 12 – 190 mm w wieżach,dysponującego nadzwyczajną jak na tamte czasy i rozmiary okrętu prędkość 25 w. i zasięg 6000 mil. Według Fishera okręt ten dzięki swej prędkości miał bez problemu wyłapać liczniejsze ale wolniejsze i słabsze jednostki wroga, a dzięki swej wielkości miałby dodatkową nad nimi przewagę przy ciężkim stanie morza.

  

Perfection, british  armoured cruiser laid down 1902 (Engine 1904)

Displacement:
    14 519 t light; 15 105 t standard; 16 510 t normal; 17 634 t full load

Dimensions: Length overall / water x beam x draught
    540,42 ft / 539,99 ft x 75,98 ft x 25,98 ft (normal load)
    164,72 m / 164,59 m x 23,16 m  x 7,92 m

Armament:
      4 - 9,21" / 234 mm guns (2x2 guns), 390,95lbs / 177,33kg shells, 1902 Model
      Breech loading guns in turrets (on barbettes)
      on centreline ends, evenly spread
      12 - 7,48" / 190 mm guns (6x2 guns), 209,28lbs / 94,93kg shells, 1902 Model
      Breech loading guns in turrets (on barbettes)
      on side, all amidships
      16 - 4,02" / 102 mm guns in single mounts, 32,38lbs / 14,69kg shells, 1902 Model
      Quick firing guns in casemate mounts
      on side, evenly spread
      4 - 2,99" / 76,0 mm guns in single mounts, 13,39lbs / 6,07kg shells, 1902 Model
      Quick firing guns in deck mounts
      on side, all amidships
    Weight of broadside 4 647 lbs / 2 108 kg
    Shells per gun, main battery: 90
    5 - 18,0" / 457 mm submerged torpedo tubes

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    5,98" / 152 mm    267,49 ft / 81,53 m    12,99 ft / 3,96 m
    Ends:    2,99" / 76 mm    272,47 ft / 83,05 m    12,99 ft / 3,96 m
      Main Belt covers 76% of normal length
      Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
        0,98" / 25 mm    350,00 ft / 106,68 m    17,98 ft / 5,48 m

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    5,98" / 152 mm    4,02" / 102 mm        5,98" / 152 mm
    2nd:    4,02" / 102 mm    2,99" / 76 mm        4,02" / 102 mm
    3rd:    2,01" / 51 mm          -                  -

   - Armour deck: 2,52" / 64 mm, Conning tower: 5,98" / 152 mm

Machinery:
    Coal fired boilers, steam turbines,
    Direct drive, 2 shafts, 47 200 shp / 35 211 Kw = 25,00 kts
    Range 6 000nm at 10,00 kts
    Bunker at max displacement = 2 529 tons (100% coal)

Complement:
    727 - 946

Cost:
    £1,657 million / $6,627 million

Distribution of weights at normal displacement:
    Armament: 581 tons, 3,5%
    Armour: 3 887 tons, 23,5%
       - Belts: 1 344 tons, 8,1%
       - Torpedo bulkhead: 229 tons, 1,4%
       - Armament: 905 tons, 5,5%
       - Armour Deck: 1 325 tons, 8,0%
       - Conning Tower: 84 tons, 0,5%
    Machinery: 4 720 tons, 28,6%
    Hull, fittings & equipment: 5 331 tons, 32,3%
    Fuel, ammunition & stores: 1 991 tons, 12,1%
    Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      11 402 lbs / 5 172 Kg = 29,2 x 9,2 " / 234 mm shells or 1,7 torpedoes
    Stability (Unstable if below 1.00): 1,33
    Metacentric height 5,5 ft / 1,7 m
    Roll period: 13,6 seconds
    Steadiness    - As gun platform (Average = 50 %): 54 %
            - Recoil effect (Restricted arc if above 1.00): 0,34
    Seaboat quality  (Average = 1.00): 1,09

Hull form characteristics:
    Hull has raised forecastle
    Block coefficient: 0,542
    Length to Beam Ratio: 7,11 : 1
    'Natural speed' for length: 23,24 kts
    Power going to wave formation at top speed: 52 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): 8,32 degrees
    Stern overhang: 0,43 ft / 0,13 m
    Freeboard (% = measuring location as a percentage of overall length):
       - Stem:        0,00 ft / 0,00 m
       - Forecastle (24%):    24,51 ft / 7,47 m (17,45 ft / 5,32 m aft of break)
       - Mid (50%):        17,45 ft / 5,32 m
       - Quarterdeck (15%):    17,45 ft / 5,32 m
       - Stern:        17,45 ft / 5,32 m
       - Average freeboard:    16,81 ft / 5,12 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 168,9%
        - Above water (accommodation/working, high = better): 130,0%
    Waterplane Area: 28 421 Square feet or 2 640 Square metres
    Displacement factor (Displacement / loading): 92%
    Structure weight / hull surface area: 129 lbs/sq ft or 629 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0,97
        - Longitudinal: 1,28
        - Overall: 1,00
    Hull space for machinery, storage, compartmentation is cramped
    Room for accommodation and workspaces is excellent