Brytyjskie małe krążowniki kolonialne - wariant FC2

Prezentowany w poście z 29 listopada 2024 r. projekt krążownika kolonialnego oznaczonego symbolem FC1 nie wzbudził entuzjazmu w admiralicji brytyjskiej. Zażądała ona większego okrętu, dysponującego m.in. działami kal. 152 mm. W ten sposób w październiku 1912 r. powstał projekt FC2 – o wyporności 2000 ton, wyposażony w 2 działa kal. 152 mm i 6 – kal. 102 mm. Miał nieco większe wymiary niż FC1, ale skala opancerzenia i osiągi (prędkość) pozostały na zbliżonym poziomie. Projekt zyskał sobie pozytywne opinie, ale wskutek sprzeciwu adm. Battenberga i Jellicoe, ostatecznie nie zmaterializował się. Projekt był popierany przez Churchilla, ale i to na wiele się nie zdało i obydwa krążowniki kolonialne pozostały jedynie na papierze. 

Diomede, british colonial cruiser laid down 1913 (Engine 1914)

Displacement:
    1 681 t light; 1 763 t standard; 2 000 t normal; 2 189 t full load

Dimensions: Length overall / water x beam x draught
    328,79 ft / 319,98 ft x 37,99 ft x 13,48 ft (normal load)
    100,22 m / 97,53 m x 11,58 m  x 4,11 m

Armament:
      2 - 5,98" / 152 mm guns in single mounts, 107,15lbs / 48,60kg shells, 1905 Model
      Quick firing guns in deck mounts
      on centreline ends, evenly spread
      4 - 4,02" / 102 mm guns in single mounts, 32,38lbs / 14,69kg shells, 1904 Model
      Quick firing guns in deck mounts
      on side, all amidships
      2 - 0,30" / 7,7 mm guns in single mounts, 0,01lbs / 0,00kg shells, 1884 Model
      Machine guns in deck mounts
      on side, all forward
    Weight of broadside 344 lbs / 156 kg
    Shells per gun, main battery: 200

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    2,52" / 64 mm    136,71 ft / 41,67 m    10,43 ft / 3,18 m
    Ends:    Unarmoured
      Main Belt covers 66% of normal length

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    1,50" / 38 mm    0,98" / 25 mm              -

   - Armour deck: 0,71" / 18 mm (0,98" / 25 mm over amidships, 0,51" / 13 mm over ends), Conning tower: 2,99" / 76 mm

Machinery:
    Coal and oil fired boilers, steam turbines,
    Direct drive, 2 shafts, 6 060 shp / 4 521 Kw = 20,00 kts
    Range 5 000nm at 12,00 kts
    Bunker at max displacement = 426 tons (50% coal)

Complement:
    149 - 194

Cost:
    £0,141 million / $0,564 million

Distribution of weights at normal displacement:
    Armament: 43 tons, 2,1%
    Armour: 286 tons, 14,3%
       - Belts: 165 tons, 8,2%
       - Torpedo bulkhead: 0 tons, 0,0%
       - Armament: 11 tons, 0,6%
       - Armour Deck: 100 tons, 5,0%
       - Conning Tower: 10 tons, 0,5%
    Machinery: 245 tons, 12,2%
    Hull, fittings & equipment: 1 108 tons, 55,4%
    Fuel, ammunition & stores: 319 tons, 15,9%
    Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      4 637 lbs / 2 104 Kg = 43,3 x 6,0 " / 152 mm shells or 1,6 torpedoes
    Stability (Unstable if below 1.00): 1,13
    Metacentric height 1,5 ft / 0,4 m
    Roll period: 13,1 seconds
    Steadiness    - As gun platform (Average = 50 %): 100 %
            - Recoil effect (Restricted arc if above 1.00): 0,29
    Seaboat quality  (Average = 1.00): 2,00

Hull form characteristics:
    Hull has a flush deck
    Block coefficient: 0,427
    Length to Beam Ratio: 8,42 : 1
    'Natural speed' for length: 17,89 kts
    Power going to wave formation at top speed: 46 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): 23,00 degrees
    Stern overhang: 0,98 ft / 0,30 m
    Freeboard (% = measuring location as a percentage of overall length):
       - Stem:        18,44 ft / 5,62 m
       - Forecastle (20%):    17,95 ft / 5,47 m
       - Mid (50%):        10,47 ft / 3,19 m
       - Quarterdeck (14%):    17,45 ft / 5,32 m
       - Stern:        17,45 ft / 5,32 m
       - Average freeboard:    15,36 ft / 4,68 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 58,0%
        - Above water (accommodation/working, high = better): 137,0%
    Waterplane Area: 7 617 Square feet or 708 Square metres
    Displacement factor (Displacement / loading): 179%
    Structure weight / hull surface area: 77 lbs/sq ft or 378 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 1,28
        - Longitudinal: 4,74
        - Overall: 1,46
    Hull space for machinery, storage, compartmentation is excellent
    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