Von Der TANN

[AnchorSteam]

A possible capital ship, a la Von der Tann

AC3, Byzantine Empire AC3 laid down 1904

Displacement:
   14 860 t light; 15 512 t standard; 16 690 t normal; 17 633 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (574,00 ft / 574,00 ft) x 76,00 ft x (22,10 / 23,13 ft)
   (174,96 m / 174,96 m) x 23,16 m  x (6,74 / 7,05 m)

Armament:
      4 - 10,00" / 254 mm 45,0 cal guns - 504,26lbs / 228,73kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     2 x Twin mounts on centreline ends, evenly spread
      4 - 10,00" / 254 mm 45,0 cal guns - 504,26lbs / 228,73kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     2 x Twin mounts on sides amidships
      8 - 6,00" / 152 mm 45,0 cal guns - 108,93lbs / 49,41kg shells, 140 per gun
     Quick firing guns in casemate mounts, 1904 Model
     8 x Single mounts on sides, evenly spread
      8 - 4,00" / 102 mm 45,0 cal guns - 32,28lbs / 14,64kg shells, 180 per gun
     Quick firing guns in deck mounts, 1904 Model
     8 x Single mounts on side ends, evenly spread
      4 - 0,30" / 7,7 mm 70,0 cal guns - 0,02lbs / 0,01kg shells, 2 000 per gun
     Machine guns in deck mounts, 1904 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 5 164 lbs / 2 342 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7,88" / 200 mm   436,00 ft / 132,89 m   8,00 ft / 2,44 m
   Ends:   1,97" / 50 mm   138,00 ft / 42,06 m   5,00 ft / 1,52 m
   Upper:   3,55" / 90 mm   436,00 ft / 132,89 m   10,00 ft / 3,05 m
     Main Belt covers 117 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9,45" / 240 mm   2,97" / 75 mm      7,88" / 200 mm
   2nd:   9,45" / 240 mm   2,97" / 75 mm      7,88" / 200 mm
   3rd:   1,97" / 50 mm   1,97" / 50 mm      1,97" / 50 mm
   4th:   0,80" / 20 mm         -               -
   5th:   0,50" / 13 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 1,77" / 45 mm
   Forecastle: 1,20" / 30 mm  Quarter deck: 1,20" / 30 mm

   - Conning towers: Forward 9,45" / 240 mm, Aft 7,88" / 200 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 48 000 shp / 35 808 Kw = 25,04 kts
   Range 5 000nm at 10,00 kts
   Bunker at max displacement = 2 121 tons (90% coal)

Complement:
   733 - 954

Cost:
   £1,616 million / $6,465 million

Distribution of weights at normal displacement:
   Armament: 1 091 tons, 6,5 %
      - Guns: 1 091 tons, 6,5 %
   Armour: 3 813 tons, 22,8 %
      - Belts: 1 826 tons, 10,9 %
      - Armament: 751 tons, 4,5 %
      - Armour Deck: 993 tons, 5,9 %
      - Conning Towers: 244 tons, 1,5 %
   Machinery: 4 752 tons, 28,5 %
   Hull, fittings & equipment: 4 977 tons, 29,8 %
   Fuel, ammunition & stores: 1 830 tons, 11,0 %
   Miscellaneous weights: 227 tons, 1,4 %
      - Hull below water: 12 tons
      - Hull above water: 80 tons
      - Above deck: 135 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     12 509 lbs / 5 674 Kg = 25,0 x 10,0 " / 254 mm shells or 1,6 torpedoes
   Stability (Unstable if below 1.00): 1,24
   Metacentric height 4,9 ft / 1,5 m
   Roll period: 14,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 74 %
         - Recoil effect (Restricted arc if above 1.00): 0,39
   Seaboat quality  (Average = 1.00): 1,11

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,606 / 0,612
   Length to Beam Ratio: 7,55 : 1
   'Natural speed' for length: 23,96 kts
   Power going to wave formation at top speed: 51 %
   Trim (Max stability = 0, Max steadiness = 100): 66
   Bow angle (Positive = bow angles forward): 0,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20,00 %,  18,00 ft / 5,49 m,  16,00 ft / 4,88 m
      - Forward deck:   33,00 %,  16,00 ft / 4,88 m,  15,00 ft / 4,57 m
      - Aft deck:   31,00 %,  15,00 ft / 4,57 m,  15,00 ft / 4,57 m
      - Quarter deck:   16,00 %,  15,00 ft / 4,57 m,  15,00 ft / 4,57 m
      - Average freeboard:      15,53 ft / 4,73 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 116,5 %
      - Above water (accommodation/working, high = better): 127,2 %
   Waterplane Area: 32 085 Square feet or 2 981 Square metres
   Displacement factor (Displacement / loading): 95 %
   Structure weight / hull surface area: 127 lbs/sq ft or 620 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,99
      - Longitudinal: 1,05
      - Overall: 1,00
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Misc weight:
12t => 3 TT x 450 with 3 reloads
80t => 40t for extra pump installation & 40t for extra air ventilation
135t => 125t for fire control & 10t for short Marconi

[AnchorSteam]

Put me down for TWO of those, I have enough singletons out there.