Implacable Class Battleship

[TacCovert4]

Implacable, Aztec Battleship laid down 1913

Displacement:
   23,216 t light; 24,284 t standard; 25,296 t normal; 26,106 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (635.85 ft / 623.36 ft) x 82.02 ft x (26.64 / 27.36 ft)
   (193.81 m / 190.00 m) x 25.00 m  x (8.12 / 8.34 m)

Armament:
      10 - 11.02" / 280 mm 50.0 cal guns - 709.07lbs / 321.63kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1913 Model
     4 x Twin mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
     1 x Twin mount on centreline, aft deck forward
      16 - 3.94" / 100 mm 50.0 cal guns - 32.30lbs / 14.65kg shells, 200 per gun
     Quick firing guns in casemate mounts, 1913 Model
     16 x Single mounts on sides, evenly spread
      16 hull mounts in casemates- Limited use in heavy seas
      2 - 2.76" / 70.0 mm 50.0 cal guns - 11.09lbs / 5.03kg shells, 200 per gun
     Quick firing guns in deck mounts, 1913 Model
     2 x Single mounts on centreline, aft deck forward
      2 raised mounts
      4 - 0.31" / 8.0 mm 60.0 cal guns - 0.02lbs / 0.01kg shells, 1,500 per gun
     Machine guns in deck mounts, 1913 Model
     4 x Single mounts on centreline, forward deck aft
      4 raised mounts
      8 - 3.94" / 100 mm 50.0 cal guns - 32.30lbs / 14.65kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1913 Model
     8 x Single mounts on sides, evenly spread
      Weight of broadside 7,888 lbs / 3,578 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.4" / 340 mm   410.11 ft / 125.00 m   16.40 ft / 5.00 m
   Ends:   2.76" / 70 mm   213.25 ft / 65.00 m   16.40 ft / 5.00 m
   Upper:   5.91" / 150 mm   410.11 ft / 125.00 m   8.20 ft / 2.50 m
     Main Belt covers 101 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.97" / 50 mm   410.11 ft / 125.00 m   29.53 ft / 9.00 m
   Beam between torpedo bulkheads 65.62 ft / 20.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.4" / 340 mm   8.86" / 225 mm      13.4" / 340 mm
   2nd:   5.91" / 150 mm         -         3.94" / 100 mm
   5th:   2.95" / 75 mm   1.97" / 50 mm      2.95" / 75 mm

   - Armoured deck - multiple decks:
   For and Aft decks: 3.15" / 80 mm
   Forecastle: 1.18" / 30 mm  Quarter deck: 1.97" / 50 mm

   - Conning towers: Forward 13.39" / 340 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 51,583 shp / 38,481 Kw = 24.00 kts
   Range 7,000nm at 10.00 kts
   Bunker at max displacement = 1,822 tons

Complement:
   1,002 - 1,303

Cost:
   £2.060 million / $8.240 million

Distribution of weights at normal displacement:
   Armament: 1,619 tons, 6.4 %
      - Guns: 1,619 tons, 6.4 %
   Armour: 10,999 tons, 43.5 %
      - Belts: 5,055 tons, 20.0 %
      - Torpedo bulkhead: 882 tons, 3.5 %
      - Armament: 2,689 tons, 10.6 %
      - Armour Deck: 2,124 tons, 8.4 %
      - Conning Tower: 249 tons, 1.0 %
   Machinery: 2,021 tons, 8.0 %
   Hull, fittings & equipment: 7,799 tons, 30.8 %
   Fuel, ammunition & stores: 2,079 tons, 8.2 %
   Miscellaneous weights: 778 tons, 3.1 %
      - Hull below water: 535 tons
      - Above deck: 243 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     42,506 lbs / 19,280 Kg = 63.5 x 11.0 " / 280 mm shells or 7.5 torpedoes
   Stability (Unstable if below 1.00): 1.05
   Metacentric height 4.1 ft / 1.2 m
   Roll period: 17.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.75
   Seaboat quality  (Average = 1.00): 1.39

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.650 / 0.653
   Length to Beam Ratio: 7.60 : 1
   'Natural speed' for length: 24.97 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: 6.56 ft / 2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   15.43 %,  27.89 ft / 8.50 m,  22.97 ft / 7.00 m
      - Forward deck:   30.00 %,  22.97 ft / 7.00 m,  19.69 ft / 6.00 m
      - Aft deck:   39.14 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Quarter deck:   15.43 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Average freeboard:      20.99 ft / 6.40 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 72.1 %
      - Above water (accommodation/working, high = better): 151.9 %
   Waterplane Area: 39,167 Square feet or 3,639 Square metres
   Displacement factor (Displacement / loading): 108 %
   Structure weight / hull surface area: 150 lbs/sq ft or 731 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.29
      - Overall: 1.00
   Excellent 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

MGs are on wings of Bridge and Flag Bridge

535t below water - Electric Drives
50t - Flag Bridge
243t - 1918 Fire Direction (Refit 1923.1)

[TacCovert4]

Implacable, Aztec Battleship laid down 1913 (Engine 1931)

Displacement:
   23,944 t light; 25,187 t standard; 27,320 t normal; 29,026 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (629.29 ft / 623.36 ft) x 82.02 ft (Bulges 88.58 ft) x (26.64 / 28.16 ft)
   (191.81 m / 190.00 m) x 25.00 m (Bulges 27.00 m)  x (8.12 / 8.58 m)

Armament:
      10 - 11.02" / 280 mm 50.0 cal guns - 709.07lbs / 321.63kg shells, 110 per gun
     Breech loading guns in turret on barbette mounts, 1913 Model
     4 x Twin mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
     1 x Twin mount on centreline, aft deck forward
      24 - 4.72" / 120 mm 55.0 cal guns - 56.91lbs / 25.81kg shells, 300 per gun
     Dual purpose guns in deck and hoist mounts, 1931 Model
     12 x Twin mounts on sides, evenly spread
      4 raised mounts
      16 - 1.57" / 40.0 mm 55.0 cal guns - 2.11lbs / 0.96kg shells, 1,500 per gun
     Anti-air guns in deck and hoist mounts, 1931 Model
     4 x 2 row quad mounts on side ends, evenly spread
      4 raised mounts
      16 - 1.18" / 30.0 mm 50.0 cal guns - 0.86lbs / 0.39kg shells, 1,000 per gun
     Anti-air guns in deck mounts, 1913 Model
     16 x Single mounts on sides, evenly spread
      Weight of broadside 8,504 lbs / 3,857 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.4" / 340 mm   410.11 ft / 125.00 m   16.40 ft / 5.00 m
   Ends:   2.76" / 70 mm   213.25 ft / 65.00 m   16.40 ft / 5.00 m
   Upper:   5.91" / 150 mm   410.11 ft / 125.00 m   8.20 ft / 2.50 m
     Main Belt covers 101 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.97" / 50 mm   410.11 ft / 125.00 m   29.53 ft / 9.00 m
   Beam between torpedo bulkheads 65.62 ft / 20.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.4" / 340 mm   8.86" / 225 mm      13.4" / 340 mm
   2nd:   2.76" / 70 mm   1.57" / 40 mm      2.76" / 70 mm
   3rd:   0.98" / 25 mm   0.98" / 25 mm      0.98" / 25 mm

   - Armoured deck - multiple decks:
   For and Aft decks: 3.74" / 95 mm
   Forecastle: 1.18" / 30 mm  Quarter deck: 3.15" / 80 mm

   - Conning towers: Forward 13.39" / 340 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 54,722 shp / 40,823 Kw = 24.00 kts
   Range 10,500nm at 14.00 kts
   Bunker at max displacement = 3,839 tons

Complement:
   1,062 - 1,381

Cost:
   £2.148 million / $8.592 million

Distribution of weights at normal displacement:
   Armament: 1,838 tons, 6.7 %
      - Guns: 1,838 tons, 6.7 %
   Armour: 11,372 tons, 41.6 %
      - Belts: 5,049 tons, 18.5 %
      - Torpedo bulkhead: 882 tons, 3.2 %
      - Armament: 2,606 tons, 9.5 %
      - Armour Deck: 2,574 tons, 9.4 %
      - Conning Tower: 262 tons, 1.0 %
   Machinery: 1,636 tons, 6.0 %
   Hull, fittings & equipment: 8,239 tons, 30.2 %
   Fuel, ammunition & stores: 3,376 tons, 12.4 %
   Miscellaneous weights: 859 tons, 3.1 %
      - Hull below water: 515 tons
      - Hull above water: 92 tons
      - On freeboard deck: 60 tons
      - Above deck: 192 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     49,317 lbs / 22,370 Kg = 73.6 x 11.0 " / 280 mm shells or 9.4 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 4.5 ft / 1.4 m
   Roll period: 17.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.63
   Seaboat quality  (Average = 1.00): 1.38

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.650 / 0.653
   Length to Beam Ratio: 7.04 : 1
   'Natural speed' for length: 24.97 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 51
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   15.43 %,  27.89 ft / 8.50 m,  22.97 ft / 7.00 m
      - Forward deck:   30.00 %,  22.97 ft / 7.00 m,  19.69 ft / 6.00 m
      - Aft deck:   39.14 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Quarter deck:   15.43 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Average freeboard:      20.99 ft / 6.40 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 66.3 %
      - Above water (accommodation/working, high = better): 143.3 %
   Waterplane Area: 39,167 Square feet or 3,639 Square metres
   Displacement factor (Displacement / loading): 113 %
   Structure weight / hull surface area: 156 lbs/sq ft or 761 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.29
      - Overall: 1.00
   Excellent 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

410t - Electric Drives
5t - Basic Hydrophones
100t - Additional Damage Control Equipment


50t - Flag Bridge
25t - LR Radio
25t - NF Devices 1918
184t - 1918 FC


60t - Aviation Facilities, Catapults, and 2 x Armed Floatplane

Deck is 80mm Monolithic with 15mm Splinter