Monitor rzeczny na Jangcy

Czas trochę odpocząć od tych krążowników;) (zwłaszcza że jeszcze kilka projektów nas czeka w najbliższym czasie). Dziś prezentuję parę rzecznych monitorów, przeznaczonych do służby na Jangcy. Przewiduję, że będzie to w najbliższym czasie główna siła naszych sił u ujścia rzeki, obok doraźnie mogących tam wpływać niewielkich okrętów pełnomorskich..

Prometeusz, polish river monitor laid down 1902

Displacement:
    803 t light; 829 t standard; 850 t normal; 866 t full load

Dimensions: Length overall / water x beam x draught
    228,15 ft / 228,15 ft x 41,40 ft x 4,79 ft (normal load)
    69,54 m / 69,54 m x 12,62 m  x 1,46 m

Armament:
      2 - 5,98" / 152 mm guns in single mounts, 107,15lbs / 48,60kg shells, 1891 Model
      Quick firing guns in turrets (on barbettes)
      on centreline ends, evenly spread
      3 - 2,24" / 57,0 mm guns in single mounts, 5,23lbs / 2,37kg shells, 1885 Model
      Quick firing guns in deck mounts
      on centreline ends, majority forward
    Weight of broadside 230 lbs / 104 kg
    Shells per gun, main battery: 70

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    2,01" / 51 mm      73,29 ft / 22,34 m    4,17 ft / 1,27 m
    Ends:    Unarmoured
      Main Belt covers 49% of normal length

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    3,54" / 90 mm    2,24" / 57 mm        3,43" / 87 mm

   - Armour deck: 0,39" / 10 mm, Conning tower: 2,01" / 51 mm

Machinery:
    Coal fired boilers, complex reciprocating steam engines,
    Direct drive, 2 shafts, 332 ihp / 248 Kw = 9,50 kts
    Range 1 400nm at 6,00 kts
    Bunker at max displacement = 37 tons (100% coal)

Complement:
    78 - 102

Cost:
    £0,059 million / $0,237 million

Distribution of weights at normal displacement:
    Armament: 29 tons, 3,4%
    Armour: 125 tons, 14,8%
       - Belts: 34 tons, 4,0%
       - Torpedo bulkhead: 0 tons, 0,0%
       - Armament: 34 tons, 4,0%
       - Armour Deck: 53 tons, 6,2%
       - Conning Tower: 4 tons, 0,5%
    Machinery: 50 tons, 5,9%
    Hull, fittings & equipment: 598 tons, 70,4%
    Fuel, ammunition & stores: 47 tons, 5,5%
    Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      2 415 lbs / 1 095 Kg = 22,5 x 6,0 " / 152 mm shells or 1,7 torpedoes
    Stability (Unstable if below 1.00): 1,83
    Metacentric height 3,6 ft / 1,1 m
    Roll period: 9,2 seconds
    Steadiness    - As gun platform (Average = 50 %): 25 %
            - Recoil effect (Restricted arc if above 1.00): 0,04
    Seaboat quality  (Average = 1.00): 0,25

Hull form characteristics:
    Hull has a flush deck
    Block coefficient: 0,657
    Length to Beam Ratio: 5,51 : 1
    'Natural speed' for length: 15,10 kts
    Power going to wave formation at top speed: 23 %
    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:        6,07 ft / 1,85 m
       - Forecastle (23%):    3,71 ft / 1,13 m
       - Mid (50%):        3,71 ft / 1,13 m
       - Quarterdeck (21%):    3,71 ft / 1,13 m
       - Stern:        3,71 ft / 1,13 m
       - Average freeboard:    3,93 ft / 1,20 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 45,2%
        - Above water (accommodation/working, high = better): 65,9%
    Waterplane Area: 7 284 Square feet or 677 Square metres
    Displacement factor (Displacement / loading): 186%
    Structure weight / hull surface area: 78 lbs/sq ft or 382 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 1,78
        - Longitudinal: 0,82
        - Overall: 1,00
    Hull space for machinery, storage, compartmentation is excellent
    Room for accommodation and workspaces is cramped
    Ship has quick, lively roll, not a steady gun platform
    Caution: Lacks seaworthiness - very limited seakeeping ability

Prometeusz (1902)
Atlas (1903)