Nagato, laid down 1917 

     Length, 212.0 m x Beam, 29.0 m x Depth, 9.1 m 
          33844 tonnes normal displacement (31679 tonnes standard) 

     Main battery:       8 x 41.0-cm (4 x 2; 2 superfiring) 
     Secondary battery: 20 x 14.0-cm 
     AA battery:         4 x  7.6-cm 

          Weight of broadside: 8432 kg 

     8 TT, 53.3 cm (4 submerged)

     Main belt, 30.5 cm; ends unarmored 
     Torpedo bulkhead, 7.6 cm 
     Armor deck, average 6.9 cm 
     Conning tower, 37.1 cm 

     Battery armor: 
          Main, 30.5 cm / secondary, 2.5 cm 
           

     Maximum speed for 64473 shaft kw = 26.50 knots 
          Approximate cruising radius, 5500 nm / 16 knots 

     Typical complement: 1248-1622 


                    Estimated cost, $24.889 million (£6.222 million) 

          Remarks: 

     Oil firing. 

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

     Poor seaboat, wet and uncomfortable;
     reduced performance in heavy weather. 

     Ship is roomy, with
     superior accommodation and working space. 

     Main deck secondary guns subject to being
     washed down in a seaway. 


          Distribution of weights: 
                                                       Percent 
                                                       normal 
                                                    displacement: 

          Armament .........................   2319 tonnes =   7 pct 
          Armor, total .....................  10456 tonnes =  31 pct 

               Belt                            2953 tonnes =   9 pct 
               Torpedo bulkhead                1494 tonnes =   4 pct 
               Deck                            2361 tonnes =   7 pct 
               C.T.                             331 tonnes =   1 pct 
               Armament                        3319 tonnes =  10 pct 

          Machinery ........................   3167 tonnes =   9 pct 
          Hull and fittings; equipment .....  13464 tonnes =  40 pct 
          Fuel, ammunition, stores .........   4388 tonnes =  13 pct 
          Miscellaneous weights ............     50 tonnes =   0 pct 
                                              ----- 
                                              33844 tonnes = 100 pct 

          Estimated metacentric height, 1.5 m 

     Displacement summary: 

          Light ship:             29456 tonnes 
          Standard displacement:  31679 tonnes 
          Normal service:         33844 tonnes 
          Full load:              35441 tonnes 

          Loading submergence 4402 tonnes/metre 

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


     Estimated overall survivability and seakeeping ability: 

          Relative margin of stability: 1.02 

          Shellfire needed to sink: 11224 kg = 11.7 x 41.0-cm shells 
               (Approximates weight of penetrating 
               shell hits needed to sink ship, 
               not counting critical hits) 

          Torpedoes needed to sink: 3.5 
               (Approximates number of 'typical' 
               torpedo hits needed to sink ship) 

          Relative steadiness as gun platform, 53 percent 
               (50 percent is 'average') 

          Relative rocking effect from firing to beam, 0.75 

          Relative quality as a seaboat: 0.96 

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


     Hull form characteristics: 

          Block coefficient: 0.60 
          Sharpness coefficient: 0.40 
          Hull speed coefficient 'M' = 6.58 
          'Natural speed' for length = 26.4 knots 
          Power going to wave formation 
               at top speed: 50 percent 


     Estimated hull characteristics and strength: 

          Relative underwater volume absorbed by 
               magazines and engineering spaces: 109 percent 

          Relative accommodation and working space: 123 percent 


          Displacement factor: 96 percent 
               (Displacement relative to loading factors) 


          Relative cross-sectional hull strength: 0.99 
               (Structure weight per square 
               metre of hull surface: 1007 kg) 

          Relative longitudinal hull strength: 1.09 
               (for 5.45 m average freeboard; 
               freeboard adjustment -0.44 m) 

          Relative composite hull strength: 1.00 

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


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

695.36 x 95.12 x 29.85; 17.88 -- Dimensions 
0.60 -- Block coefficient 
1917 -- Year laid down 
26.50 / 5500 / 16.00; Oil-fired turbine or equivalent -- Speed / radius / cruise 
50 tons -- Miscellaneous weights 
++++++++++ 
8 x 16.14; 4; 2 -- Main battery; turrets; superfiring 
   : 
20 x 5.51; 0 -- Secondary battery; turrets 
  Main deck battery 
   : 
4 x 2.99 -- Tertiary (QF/AA) battery 
   : 
0 -- No fourth (light) battery 
8 / 4 / 20.98 -- TT / submerged / size 
++++++++++ 
12.01 / 0.00 / 0.00 / 2.99; 110 -- Belt armor; relative extent 
2.72 / 14.61 -- Deck / CT 
12.01 / 0.98 / 0.00 / 0.00 -- Battery armor 


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


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

nagato_old
Nagato
212
29
9.1
.6
y
1917
y
8
41
4
2
n
20
14
0
4
7.6
0
8
4
53.3
30.5
0
0
109.5
7.6
6.9
37.1
30.5
2.5
n
0
50
z
n
26.5
y
16
z
y
5500
5.45
z
55