речн монит, СССР монит laid down 1930

Displacement:
    682 t light; 702 t standard; 707 t normal; 712 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (213,46 ft / 213,25 ft) x 29,53 ft x (4,92 / 4,95 ft)
    (65,06 m / 65,00 m) x 9,00 m  x (1,50 / 1,51 m)

Armament:
      2 - 4,80" / 122 mm 30,0 cal guns - 51,07lbs / 23,16kg shells, 50 per gun
      Breech loading guns in deck mounts, 1930 Model
      2 x Single mounts on centreline, aft evenly spread
      1 - 4,02" / 102 mm 50,0 cal gun - 34,28lbs / 15,55kg shells, 80 per gun
      Breech loading gun in deck mount, 1930 Model
      1 x Single mount on centreline, forward deck forward
      2 - 1,46" / 37,0 mm 60,0 cal guns - 1,69lbs / 0,77kg shells, 150 per gun
      Breech loading guns in deck mounts, 1930 Model
      2 x Single mounts on sides, forward deck aft
      8 - 0,47" / 12,0 mm 60,0 cal guns - 0,06lbs / 0,03kg shells, 550 per gun
      Breech loading guns in deck mounts, 1930 Model
      4 x Twin mounts on sides, aft evenly spread
      4 - 3,15" / 80,0 mm 12,0 cal guns - 13,74lbs / 6,23kg shells, 40 per gun
      Muzzle loading guns in deck mounts, 1930 Model
      4 x Single mounts on sides, forward evenly spread
      Weight of broadside 195 lbs / 89 kg

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    1,38" / 35 mm    164,04 ft / 50,00 m    3,94 ft / 1,20 m
    Ends:    0,98" / 25 mm      49,21 ft / 15,00 m    3,94 ft / 1,20 m
    Upper:    1,38" / 35 mm    213,25 ft / 65,00 m    1,64 ft / 0,50 m
      Main Belt covers 118% of normal length

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    0,98" / 25 mm    0,79" / 20 mm              -
    2nd:    1,97" / 50 mm    1,38" / 35 mm              -
    3rd:    0,79" / 20 mm    0,39" / 10 mm              -
    4th:    0,59" / 15 mm    0,24" / 6 mm              -
    5th:    0,39" / 10 mm          -                  -

   - Armoured deck - single deck:
    For and Aft decks: 0,59" / 15 mm
    Forecastle: 0,59" / 15 mm  Quarter deck: 0,59" / 15 mm

Machinery:
    Diesel Internal combustion generators,
    Electric motors, 2 shafts, 876 shp / 653 Kw = 13,00 kts
    Range 300nm at 7,00 kts
    Bunker at max displacement = 9 tons

Complement:
    68 - 89

Cost:
    £0,142 million / $0,567 million

Distribution of weights at normal displacement:
    Armament: 20 tons, 2,9%
       - Guns: 20 tons, 2,9%
    Armour: 173 tons, 24,5%
       - Belts: 63 tons, 8,9%
       - Armament: 50 tons, 7,0%
       - Armour Deck: 61 tons, 8,6%
    Machinery: 27 tons, 3,8%
    Hull, fittings & equipment: 462 tons, 65,3%
    Fuel, ammunition & stores: 25 tons, 3,6%
    Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      3 230 lbs / 1 465 Kg = 58,3 x 4,8 " / 122 mm shells or 3,3 torpedoes
    Stability (Unstable if below 1.00): 2,18
    Metacentric height 2,7 ft / 0,8 m
    Roll period: 7,6 seconds
    Steadiness    - As gun platform (Average = 50 : 18 %
            - Recoil effect (Restricted arc if above 1.00): 0,02
    Seaboat quality  (Average = 1.00): 0,13

Hull form characteristics:
    Hull has a flush deck,
      a normal bow and a cruiser stern
    Block coefficient (normal/deep): 0,799 / 0,799
    Length to Beam Ratio: 7,22 : 1
    'Natural speed' for length: 14,60 kts
    Power going to wave formation at top speed: 40 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): 5,00 degrees
    Stern overhang: 0,00 ft / 0,00 m
    Freeboard (% = length of deck as a percentage of waterline length):
                Fore end,     Aft end
       - Forecastle:    15,00%,  2,30 ft / 0,70 m,  2,30 ft / 0,70 m
       - Forward deck:    30,00%,  2,30 ft / 0,70 m,  2,30 ft / 0,70 m
       - Aft deck:    40,00%,  2,30 ft / 0,70 m,  2,30 ft / 0,70 m
       - Quarter deck:    15,00%,  2,30 ft / 0,70 m,  2,30 ft / 0,70 m
       - Average freeboard:        2,30 ft / 0,70 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 22,2%
        - Above water (accommodation/working, high = better): 35,6%
    Waterplane Area: 5 533 Square feet or 514 Square metres
    Displacement factor (Displacement / loading): 247%
    Structure weight / hull surface area: 80 lbs/sq ft or 390 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 2,80
        - Longitudinal: 0,63
        - Overall: 0,91
    Caution: Hull subject to strain in open-sea
    Excellent machinery, storage, compartmentation space
    Extremely poor accommodation and workspace room
    Ship has quick, lively roll, not a steady gun platform
    Caution: Lacks seaworthiness - very limited seakeeping ability