South Dakota, laid down 1920 

     Length, 209.0 m x Beam, 32.0 m x Depth, 10.1 m 
          43586 tonnes normal displacement (42410 tonnes standard) 

     Main battery:      12 x 40.6-cm (4 x 3; 2 superfiring) 
     Secondary battery: 16 x 15.2-cm 
     AA battery:         8 x  7.6-cm 

          Weight of broadside: 11966 kg 

     2 TT, 53.3 cm (submerged)

     Main belt, 34.3 cm; ends unarmored 
     Torpedo bulkhead, 1.9 cm 
     Armor deck, average 12.0 cm 
     Conning tower, 40.6 cm 

     Battery armor: 
          Main, 45.7 cm 
           

     Maximum speed for 44832 shaft kw = 23.00 knots 
          Approximate cruising radius, 8000 nm / 10 knots 

     Typical complement: 1508-1961 


                    Estimated cost, $41.933 million (£10.483 million) 

          Remarks: 

     Relative extent of belt armor,
     94 percent of 'typical' coverage. 


          Distribution of weights: 
                                                       Percent 
                                                       normal 
                                                    displacement: 

          Armament .........................   3291 tonnes =   8 pct 
          Armor, total .....................  14401 tonnes =  33 pct 

               Belt                            2981 tonnes =   7 pct 
               Torpedo bulkhead                 409 tonnes =   1 pct 
               Deck                            4663 tonnes =  11 pct 
               C.T.                             429 tonnes =   1 pct 
               Armament                        5920 tonnes =  14 pct 

          Machinery ........................   2101 tonnes =   5 pct 
          Hull and fittings; equipment .....  19452 tonnes =  45 pct 
          Fuel, ammunition, stores .........   4242 tonnes =  10 pct 
          Miscellaneous weights ............    100 tonnes =   0 pct 
                                              ----- 
                                              43586 tonnes = 100 pct 

          Estimated metacentric height, 1.6 m 

     Displacement summary: 

          Light ship:             39344 tonnes 
          Standard displacement:  42410 tonnes 
          Normal service:         43586 tonnes 
          Full load:              44353 tonnes 

          Loading submergence 5000 tonnes/metre 

     +++++++++++++++++++++++++ 


     Estimated overall survivability and seakeeping ability: 

          Relative margin of stability: 1.00 

          Shellfire needed to sink: 17119 kg = 18.4 x 40.6-cm shells 
               (Approximates weight of penetrating 
               shell hits needed to sink ship, 
               not counting critical hits) 

          Torpedoes needed to sink: 4.7 
               (Approximates number of 'typical' 
               torpedo hits needed to sink ship) 

          Relative steadiness as gun platform, 47 percent 
               (50 percent is 'average') 

          Relative rocking effect from firing to beam, 0.69 

          Relative quality as a seaboat: 1.00 

     +++++++++++++++++++++++++ 


     Hull form characteristics: 

          Block coefficient: 0.64 
          Sharpness coefficient: 0.43 
          Hull speed coefficient 'M' = 5.96 
          'Natural speed' for length = 26.2 knots 
          Power going to wave formation 
               at top speed: 45 percent 


     Estimated hull characteristics and strength: 

          Relative underwater volume absorbed by 
               magazines and engineering spaces: 93 percent 

          Relative accommodation and working space: 117 percent 


          Displacement factor: 97 percent 
               (Displacement relative to loading factors) 


          Relative cross-sectional hull strength: 1.13 
               (Structure weight per square 
               metre of hull surface: 1319 kg) 

          Relative longitudinal hull strength: 1.36 
               (for 5.30 m average freeboard; 
               freeboard adjustment -0.90 m) 

          Relative composite hull strength: 1.16 

     +++++++++++++++++++++++++ 


[Machine-readable parameters: Spring Style v. 1.2.1] 

685.52 x 104.96 x 33.13; 17.38 -- Dimensions 
0.64 -- Block coefficient 
1920 -- Year laid down 
23.00 / 8000 / 10.00; Oil-fired turbine or equivalent -- Speed / radius / cruise 
100 tons -- Miscellaneous weights 
++++++++++ 
12 x 15.98; 4; 2 -- Main battery; turrets; superfiring 
   : 
16 x 5.98; 0 -- Secondary battery; turrets 
   : 
8 x 2.99 -- Tertiary (QF/AA) battery 
   : 
0 -- No fourth (light) battery 
2 / 2 / 20.98 -- TT / submerged / size 
++++++++++ 
13.50 / 0.00 / 0.00 / 0.75; 94 -- Belt armor; relative extent 
4.72 / 15.98 -- Deck / CT 
17.99 / 0.00 / 0.00 / 0.00 -- Battery armor 


     (Note: For portability, values are stored in Anglo-American units) 


     +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 

sd_des
South Dakota
209
32
10.1
.64
y
1920
12
40.6
4
2
n
16
15.2
0
8
7.6
0
2
2
53.3
34.3
0
0
93.5
1.9
12.0
40.6
45.7
0
0
100
z
n
23
y
10
z
y
8000
5.3
z
45