SMS Iowa

[Borys]

Not an exceptional design, an amusing quickie

SMS Iowa, Habsburgs, laid down 1916

Displacement:
   48 011 t light; 50 189 t standard; 53 651 t normal; 56 421 t full load

Dimensions: Length overall / water x beam x draught
   880,00 ft / 880,00 ft x 108,00 ft x 37,00 ft (normal load)
   268,22 m / 268,22 m x 32,92 m  x 11,28 m

Armament:
      8 - 16,50" / 420 mm guns (4x2 guns), 2 500,00lbs / 1 133,98kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      18 - 6,00" / 152 mm guns in single mounts, 100,00lbs / 45,36kg shells, 1916 Model
     Breech loading guns in casemate mounts
     on side, all amidships
   Weight of broadside 21 800 lbs / 9 888 kg
   Shells per gun, main battery: 90

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13,0" / 330 mm   555,00 ft / 169,16 m   14,00 ft / 4,27 m
   Ends:   5,00" / 127 mm   325,00 ft / 99,06 m   12,00 ft / 3,66 m
   Upper:   7,00" / 178 mm   555,00 ft / 169,16 m   14,00 ft / 4,27 m
     Main Belt covers 97% of normal length

   - Torpedo Bulkhead:
      2,00" / 51 mm   555,00 ft / 169,16 m   53,00 ft / 16,15 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15,0" / 381 mm   12,0" / 305 mm      15,0" / 381 mm
   2nd:   4,00" / 102 mm         -         1,00" / 25 mm

   - Armour deck: 3,00" / 76 mm, Conning tower: 16,00" / 406 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 187 716 shp / 140 036 Kw = 31,00 kts
   Range 12 000nm at 12,00 kts
   Bunker at max displacement = 6 232 tons

Complement:
   1 762 - 2 291

Cost:
   £7,773 million / $31,093 million

Distribution of weights at normal displacement:
   Armament: 2 489 tons, 4,6%
   Armour: 18 021 tons, 33,6%
      - Belts: 7 361 tons, 13,7%
      - Torpedo bulkhead: 2 177 tons, 4,1%
      - Armament: 4 366 tons, 8,1%
      - Armour Deck: 3 626 tons, 6,8%
      - Conning Tower: 490 tons, 0,9%
   Machinery: 6 994 tons, 13,0%
   Hull, fittings & equipment: 20 008 tons, 37,3%
   Fuel, ammunition & stores: 5 640 tons, 10,5%
   Miscellaneous weights: 500 tons, 0,9%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     62 029 lbs / 28 136 Kg = 27,6 x 16,5 " / 419 mm shells or 9,3 torpedoes
   Stability (Unstable if below 1.00): 1,10
   Metacentric height 6,7 ft / 2,1 m
   Roll period: 17,5 seconds
   Steadiness   - As gun platform (Average = 50 %): 48 %
         - Recoil effect (Restricted arc if above 1.00): 0,60
   Seaboat quality  (Average = 1.00): 1,01

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,534
   Length to Beam Ratio: 8,15 : 1
   'Natural speed' for length: 29,66 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 46
   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:      33,00 ft / 10,06 m
      - Forecastle (20%):   21,00 ft / 6,40 m
      - Mid (50%):      21,00 ft / 6,40 m
      - Quarterdeck (15%):   21,00 ft / 6,40 m
      - Stern:      21,00 ft / 6,40 m
      - Average freeboard:   21,96 ft / 6,69 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 96,3%
      - Above water (accommodation/working, high = better): 148,3%
   Waterplane Area: 65 342 Square feet or 6 070 Square metres
   Displacement factor (Displacement / loading): 102%
   Structure weight / hull surface area: 213 lbs/sq ft or 1 042 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,99
      - Longitudinal: 1,06
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent

[Jefgte]

waouh!!!

Expensive BB


Jef  ;)