POW Olimpos - 12.12.2010

Na przełomie lat 70-tych i 80-tych XIX w. flota grecka byłasłabiutka, mając za najsilniejsze swoje jednostki dwa małe pancernikicentralnobateryjne z lat 60-tych: Basileos Georgios i Basilissa Olga, uzbrojonew odprzodowe działa 9-calowe. W tym samym czasie potencjalny rywal – Turcja -posiadał ok. 14 pancerników, w większości również niedużych i nie posiadającychdział większych niż 9-calowe, ale wśród nich był silny i nowoczesny pancernikcentralnobateryjny Mes’udiye, uzbrojony w 12 10-calówek. Jest jasne, że przeciwtakiej armadzie siły greckie były dalece niewystarczające, stąd pomysłwzmocnienia ich małym, ale nowoczesnym pancernikiem obrony wybrzeża.Proponowany okręt mógłby wyglądać np. tak:

  

Olimpos, greek coastal battleship laid down 1879 (Engine 1881)

Displacement:
    2 258 t light; 2 345 t standard; 2 450 t normal; 2 534 t full load

Dimensions: Length overall / water x beam x draught
    236,88 ft / 236,88 ft x 41,67 ft x 15,09 ft (normal load)
    72,20 m / 72,20 m x 12,70 m  x 4,60 m

Armament:
      2 - 9,45" / 240 mm guns in single mounts, 352,20lbs / 159,76kg shells, 1879 Model
      Breech loading guns in Coles/Ericsson turrets
      on centreline ends, evenly spread
      4 - 3,43" / 87,0 mm guns in single mounts, 16,78lbs / 7,61kg shells, 1879 Model
      Breech loading guns in casemate mounts
      on side, all amidships
      4 - 1,46" / 37,0 mm guns in single mounts, 1,29lbs / 0,59kg shells, 1879 Model
      Breech loading guns in deck mounts
      on centreline, all amidships
    Weight of broadside 777 lbs / 352 kg
    Shells per gun, main battery: 85

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    9,84" / 250 mm    117,13 ft / 35,70 m    7,09 ft / 2,16 m
    Ends:    Unarmoured
      Main Belt covers 76% of normal length

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    8,27" / 210 mm    5,91" / 150 mm              -
    2nd:    5,91" / 150 mm          -                  -

   - Armour deck: 1,38" / 35 mm, Conning tower: 5,91" / 150 mm

Machinery:
    Coal fired boilers, simple reciprocating steam engines,
    Direct drive, 1 shaft, 1 272 ihp / 949 Kw = 12,00 kts
    Range 2 750nm at 6,50 kts
    Bunker at max displacement = 189 tons (100% coal)

Complement:
    173 - 226

Cost:
    £0,197 million / $0,788 million

Distribution of weights at normal displacement:
    Armament: 97 tons, 4,0%
    Armour: 896 tons, 36,6%
       - Belts: 390 tons, 15,9%
       - Torpedo bulkhead: 0 tons, 0,0%
       - Armament: 308 tons, 12,6%
       - Armour Deck: 175 tons, 7,2%
       - Conning Tower: 23 tons, 0,9%
    Machinery: 259 tons, 10,6%
    Hull, fittings & equipment: 1 006 tons, 41,1%
    Fuel, ammunition & stores: 192 tons, 7,8%
    Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      2 982 lbs / 1 352 Kg = 8,5 x 9,4 " / 240 mm shells or 1,1 torpedoes
    Stability (Unstable if below 1.00): 1,03
    Metacentric height 1,4 ft / 0,4 m
    Roll period: 14,7 seconds
    Steadiness    - As gun platform (Average = 50 %): 90 %
            - Recoil effect (Restricted arc if above 1.00): 0,67
    Seaboat quality  (Average = 1.00): 1,81

Hull form characteristics:
    Hull has a flush deck
    Block coefficient: 0,576
    Length to Beam Ratio: 5,69 : 1
    'Natural speed' for length: 15,39 kts
    Power going to wave formation at top speed: 38 %
    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:        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:        11,09 ft / 3,38 m
       - Average freeboard:    10,91 ft / 3,33 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 64,5%
        - Above water (accommodation/working, high = better): 81,4%
    Waterplane Area: 6 874 Square feet or 639 Square metres
    Displacement factor (Displacement / loading): 112%
    Structure weight / hull surface area: 95 lbs/sq ft or 462 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0,89
        - Longitudinal: 2,80
        - 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