czwartek, 30 sierpnia 2012

POW Brabant - 19.01.2012

A poprzednikiem pancernika prezentowanego w poście z 13 lutego mógłby być taki oto okręcik:
 
Brabant, belgian casemate battleship laid down 1865 (Engine 1866)

Displacement:
    1 361 t light; 1 408 t standard; 1 466 t normal; 1 512 t full load

Dimensions: Length overall / water x beam x draught
    184,25 ft / 183,46 ft x 33,92 ft x 14,34 ft (normal load)
    56,16 m / 55,92 m x 10,34 m  x 4,37 m

Armament:
      4 - 100pdr guns in single mounts, 1865 Model
      Smoothbore guns in casemate mounts
      on side, all amidships, all raised mounts - superfiring
    Weight of broadside 209 lbs / 95 kg
    Shells per gun, main battery: 150

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    5,51" / 140 mm    109,74 ft / 33,45 m    7,74 ft / 2,36 m
    Ends:    2,99" / 76 mm      72,70 ft / 22,16 m    7,74 ft / 2,36 m
      1,02 ft / 0,31 m Unarmoured ends
      Main Belt covers 92% of normal length

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    7,01" / 178 mm          -                  -

   - Armour deck: 0,79" / 20 mm

Machinery:
    Coal fired boilers, simple reciprocating steam engines,
    Direct drive, 1 shaft, 812 ihp / 606 Kw = 11,00 kts
    Range 980nm at 7,00 kts
    Bunker at max displacement = 105 tons (100% coal)

Complement:
    229

Cost:
    Ł0,100 million / $0,401 million

Distribution of weights at normal displacement:
    Armament: 26 tons, 1,8%
    Armour: 427 tons, 29,2%
       - Belts: 276 tons, 18,8%
       - Torpedo bulkhead: 0 tons, 0,0%
       - Armament: 89 tons, 6,1%
       - Armour Deck: 63 tons, 4,3%
       - Conning Tower: 0 tons, 0,0%
    Machinery: 218 tons, 14,9%
    Hull, fittings & equipment: 542 tons, 37,0%
    Fuel, ammunition & stores: 105 tons, 7,2%
    Miscellaneous weights: 147 tons, 10,0%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      1 214 lbs / 551 Kg = 23,2 x 5,5 " / 140 mm shells or 0,5 torpedoes
    Stability (Unstable if below 1.00): 1,06
    Metacentric height 1,1 ft / 0,3 m
    Roll period: 13,6 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: 0,575
    Length to Beam Ratio: 5,41 : 1
    'Natural speed' for length: 13,54 kts
    Power going to wave formation at top speed: 41 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): -10,00 degrees
    Stern overhang: 0,79 ft / 0,24 m
    Freeboard (% = measuring location as a percentage of overall length):
       - Stem:        12,37 ft / 3,77 m
       - Forecastle (20%):    10,76 ft / 3,28 m
       - Mid (50%):        10,76 ft / 3,28 m
       - Quarterdeck (15%):    10,76 ft / 3,28 m
       - Stern:        11,25 ft / 3,43 m
       - Average freeboard:    10,93 ft / 3,33 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 73,7%
        - Above water (accommodation/working, high = better): 75,9%
    Waterplane Area: 4 331 Square feet or 402 Square metres
    Displacement factor (Displacement / loading): 120%
    Structure weight / hull surface area: 74 lbs/sq ft or 362 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0,87
        - Longitudinal: 3,26
        - Overall: 1,00
    Hull space for machinery, storage, compartmentation is excellent
    Room for accommodation and workspaces is cramped
    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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