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Kontos, Byzantium Cruiser laid down 1926

Displacement:

   12,608 t light; 13,592 t standard; 15,760 t normal; 17,494 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)

   (671.17 ft / 639.76 ft) x 65.62 ft x (29.53 / 31.72 ft)
   (204.57 m / 195.00 m) x 20.00 m  x (9.00 / 9.67 m)

Armament:

     12 - 6.00" / 152 mm 47.0 cal guns - 112.35lbs / 50.96kg shells, 300 per gun
     Quick firing guns in deck and hoist mounts, 1926 Model
     4 x Triple mounts on centreline ends, evenly spread
       2 raised mounts - superfiring
     12 - 5.00" / 127 mm 38.0 cal guns - 59.33lbs / 26.91kg shells, 500 per gun
     Dual purpose guns in deck and hoist mounts, 1926 Model
     6 x Twin mounts on sides, evenly spread
     48 - 1.57" / 40.0 mm 60.0 cal guns - 2.14lbs / 0.97kg shells, 4,000 per gun
     Anti-air guns in deck and hoist mounts, 1926 Model
     12 x 4-gun mounts on sides, evenly spread
       4 raised mounts
     32 - 0.79" / 20.0 mm 70.0 cal guns - 0.26lbs / 0.12kg shells, 4,000 per gun
     Anti-air guns in deck mounts, 1926 Model
     16 x 4-gun mounts on sides, evenly spread
     Weight of broadside 2,171 lbs / 985 kg
     Main Torpedoes
     12 - 24.0" / 610 mm, 30.00 ft / 9.14 m torpedoes - 2.461 t each, 29.538 t total
   In 6 sets of deck mounted carriage/fixed tubes
     2nd Torpedoes
     36 - 24.0" / 610 mm, 30.00 ft / 9.14 m torpedoes - 2.461 t each, 88.613 t total
   In 6 sets of deck mounted carriage/fixed tubes
     Mines
     12 - 2,000.00 lbs / 907.18 kg mines + 12 reloads - 21.429 t total
   in Above water - Stern racks/rails
     Main DC/AS Mortars
     24 - 750.00 lbs / 340.19 kg Depth Charges + 24 reloads - 16.071 t total
   in Stern depth charge racks
     2nd DC/AS Mortars
     24 - 750.00 lbs / 340.19 kg Depth Charges + 24 reloads - 16.071 t total
   in Stern depth charge racks

Armour:

  - Belts:        Width (max)    Length (avg)        Height (avg)
   Main:    6.00" / 152 mm    465.00 ft / 141.73 m    15.00 ft / 4.57 m
   Ends:    Unarmoured
     Main Belt covers 112 % of normal length
     Main Belt inclined 19.00 degrees (positive = in)
  - Torpedo Bulkhead - Strengthened structural bulkheads:
       4.00" / 102 mm    465.00 ft / 141.73 m    30.00 ft / 9.14 m
   Beam between torpedo bulkheads 51.00 ft / 15.54 m
  - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
   Main:    12.0" / 305 mm    4.00" / 102 mm        7.00" / 178 mm
   2nd:    3.00" / 76 mm    3.00" / 76 mm        3.00" / 76 mm
   3rd:    1.00" / 25 mm    1.00" / 25 mm        1.00" / 25 mm
   4th:    0.50" / 13 mm          -                  -
  - Armoured deck - multiple decks:
   For and Aft decks: 2.00" / 51 mm
   Forecastle: 1.00" / 25 mm  Quarter deck: 2.00" / 51 mm
  - Conning towers: Forward 7.00" / 178 mm, Aft 3.50" / 89 mm

Machinery:

   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 104,266 shp / 77,782 Kw = 33.00 kts
   Range 10,000nm at 16.00 kts
   Bunker at max displacement = 3,902 tons

Complement:

   703 - 914

Cost:

   £3.861 million / $15.445 million

Distribution of weights at normal displacement:

   Armament: 708 tons, 4.5 %
      - Guns: 494 tons, 3.1 %
      - Weapons: 215 tons, 1.4 %
   Armour: 5,291 tons, 33.6 %
      - Belts: 1,689 tons, 10.7 %
      - Torpedo bulkhead: 2,065 tons, 13.1 %
      - Armament: 428 tons, 2.7 %
      - Armour Deck: 967 tons, 6.1 %
      - Conning Towers: 142 tons, 0.9 %
   Machinery: 3,338 tons, 21.2 %
   Hull, fittings & equipment: 3,221 tons, 20.4 %
   Fuel, ammunition & stores: 3,152 tons, 20.0 %
   Miscellaneous weights: 50 tons, 0.3 %
      - On freeboard deck: 50 tons

Overall survivability and seakeeping ability:

   Survivability (Non-critical penetrating hits needed to sink ship):
     21,087 lbs / 9,565 Kg = 195.2 x 6.0 " / 152 mm shells or 1.8 torpedoes
   Stability (Unstable if below 1.00): 1.21
   Metacentric height 3.8 ft / 1.1 m
   Roll period: 14.2 seconds
   Steadiness    - As gun platform (Average = 50 %): 72 %
           - Recoil effect (Restricted arc if above 1.00): 0.44
   Seaboat quality  (Average = 1.00): 1.38

Hull form characteristics:

   Hull has a flush deck,
     an extended bulbous bow and large transom stern
   Block coefficient (normal/deep): 0.445 / 0.460
   Length to Beam Ratio: 9.75 : 1
   'Natural speed' for length: 29.12 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 52
   Bow angle (Positive = bow angles forward): 30.00 degrees
   Stern overhang: 13.12 ft / 4.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
               Fore end,     Aft end
      - Forecastle:    25.00 %,  31.66 ft / 9.65 m,  26.25 ft / 8.00 m
      - Forward deck:    30.00 %,  26.25 ft / 8.00 m,  19.69 ft / 6.00 m
      - Aft deck:    30.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Quarter deck:    15.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Average freeboard:        22.85 ft / 6.97 m

Ship space, strength and comments:

   Space    - Hull below water (magazines/engines, low = better): 109.4 %
       - Above water (accommodation/working, high = better): 143.4 %
   Waterplane Area: 27,700 Square feet or 2,573 Square metres
   Displacement factor (Displacement / loading): 113 %
   Structure weight / hull surface area: 114 lbs/sq ft or 555 Kg/sq metre
   Hull strength (Relative):
       - Cross-sectional: 0.93
       - Longitudinal: 1.87
       - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

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