Fregata Sława - 26.01.2011

Oto moja propozycja nieopancerzonego krążownika-fregaty dla floty rosyjskiej. Nieco inspirowałem się innymi dużymi fregatami nieopancerzonymi tego czasu - a mianowicie brytyjskim typem Shah i amerykańskim Wampanoag. Ponieważ przewidywane zadania dla tego okrętu to działania na wrogich liniach komunikacyjnych, to nacisk położyłem na prędkość, by w razie czego zawsze móc się uchylić od walki z silniejszym przeciwnikiem - z 17 w. byłby to w momencie powstania bodaj najszybszy tej klasy okręt na świecie (może jeden Wampanoag by mu dorównywał). Zasięg nie jest wprawdzie imponujący jak na okręt do zadań krążowniczych, ale to typowa bolączka okrętów tamtych czasów, którą częściowo rekompensuje posiadanie pełnego ożaglowania.

 Sława, russian unarmoured frigate laid down 1868 (Engine 1870)

Displacement:
    4 254 t light; 4 501 t standard; 4 950 t normal; 5 309 t full load

Dimensions: Length overall / water x beam x draught
    317,42 ft / 310,11 ft x 46,42 ft x 21,82 ft (normal load)
    96,75 m / 94,52 m x 14,15 m  x 6,65 m

Armament:
      6 - 7,99" / 203 mm guns in single mounts, 171,01lbs / 77,57kg shells, 1868 Model
      Breech loading guns in broadside mounts
      on side, all amidships
      12 - 5,98" / 152 mm guns in single mounts, 71,79lbs / 32,56kg shells, 1868 Model
      Breech loading guns in broadside mounts
      on side, evenly spread
      12 - 3,39" / 86,0 mm guns in single mounts, 13,00lbs / 5,90kg shells, 1868 Model
      Breech loading guns in deck mounts
      on side ends, evenly spread
    Weight of broadside 2 044 lbs / 927 kg
    Shells per gun, main battery: 120

Machinery:
    Coal fired boilers, simple reciprocating steam engines,
    Direct drive, 1 shaft, 7 289 ihp / 5 438 Kw = 17,00 kts
    Range 3 000nm at 8,50 kts
    Bunker at max displacement = 807 tons (100% coal)

Complement:
    561

Cost:
    £0,613 million / $2,453 million

Distribution of weights at normal displacement:
    Armament: 255 tons, 5,2%
    Machinery: 1 784 tons, 36,0%
    Hull, fittings & equipment: 2 214 tons, 44,7%
    Fuel, ammunition & stores: 696 tons, 14,1%
    Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      1 661 lbs / 753 Kg = 9,7 x 8,0 " / 203 mm shells or 0,3 torpedoes
    Stability (Unstable if below 1.00): 1,30
    Metacentric height 2,5 ft / 0,8 m
    Roll period: 12,2 seconds
    Steadiness    - As gun platform (Average = 50 %): 100 %
            - Recoil effect (Restricted arc if above 1.00): 0,87
    Seaboat quality  (Average = 1.00): 2,00

Hull form characteristics:
    Hull has a flush deck
    Block coefficient: 0,552
    Length to Beam Ratio: 6,68 : 1
    'Natural speed' for length: 17,61 kts
    Power going to wave formation at top speed: 47 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): -9,00 degrees
    Stern overhang: 7,32 ft / 2,23 m
    Freeboard (% = measuring location as a percentage of overall length):
       - Stem:        23,72 ft / 7,23 m
       - Forecastle (20%):    20,08 ft / 6,12 m
       - Mid (50%):        20,08 ft / 6,12 m
       - Quarterdeck (15%):    20,08 ft / 6,12 m
       - Stern:        21,03 ft / 6,41 m
       - Average freeboard:    20,44 ft / 6,23 m

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 155,5%
        - Above water (accommodation/working, high = better): 127,0%
    Waterplane Area: 9 761 Square feet or 907 Square metres
    Displacement factor (Displacement / loading): 88%
    Structure weight / hull surface area: 108 lbs/sq ft or 527 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0,82
        - Longitudinal: 6,02
        - Overall: 1,00
    Hull space for machinery, storage, compartmentation is cramped
    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