SS3 v SS2: A comparision using Scharnhorst

[Sachmle]

This is a comparison of an SS3 version of Scharnhorst and an SS2 version. I've noticed the following differences, but if you see others, please point them out.
Light tonnage is 182t less w/ SS3

In the distrubution of weights at normal load the following:
SS3 weights followed by SS2
1,439t for armament, including 40t for the 4 TTs - 934t
5,642t for total armor - 5,727t
Belts 2,736t - 2,755t
Armament 1,358t - 1,613t
Deck 1,189t - 1,179
CT 360t - 180t
HF&E 6,232t - 6,834t
FA&S 3,086t - 2,904t

In survivability and seakeeping:
SS3 first then SS2
25,040 lbs / 11,358 Kg = 28.9 x 12.0 " / 305 mm shells or 3.7 torpedoes- SS3
22,940 lbs / 10,405 Kg = 26.5 x 12.0 " / 305 mm shells or 2.7 torpedoes- SS2

Stability (Unstable if below 1.00): 1.16-SS3
Stability (Unstable if below 1.00): 1.10-SS2

Metacentric height 4.9 ft / 1.5 m-SS3
   Roll period: 15.6 seconds
Metacentric height 4.5 ft / 1.4 m-SS2
   Roll period: 16.3 seconds

Steadiness   - As gun platform (Average = 50 %): 72 %-SS3
         - Recoil effect (Restricted arc if above 1.00): 0.59
   Seaboat quality  (Average = 1.00): 1.25
Steadiness   - As gun platform (Average = 50 %): 70 %-SS2
         - Recoil effect (Restricted arc if above 1.00): 0.59
   Seaboat quality  (Average = 1.00): 1.23

Space   - Hull below water (magazines/engines, low = better): 75.8 %-SS3
Space   - Hull below water (magazines/engines, low = better): 80.9 %-SS2

Displacement factor (Displacement / loading): 114 %
   Structure weight / hull surface area: 150 lbs/sq ft or 731 Kg/sq metre-SS3
Displacement factor (Displacement / loading): 105 %
   Structure weight / hull surface area: 149 lbs/sq ft or 730 Kg/sq metre-SS2

- Longitudinal: 1.53-SS3
- Longitudinal: 1.49-SS2



SS3 version
Scharnhorst, Brandenburg Schlachtkreuzer laid down 1904 (Engine 1909)

Displacement:
   15,691 t light; 16,904 t standard; 18,777 t normal; 20,275 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (557.74 ft / 557.74 ft) x 82.02 ft x (25.43 / 27.05 ft)
   (170.00 m / 170.00 m) x 25.00 m  x (7.75 / 8.24 m)

Armament:
      6 - 12.01" / 305 mm 45.0 cal guns - 859.80lbs / 390.00kg shells, 150 per gun
     Breech loading guns in turret on barbette mounts, 1903 Model
     3 x Twin mounts on centreline ends, majority aft
      1 raised mount aft - superfiring
      8 - 6.69" / 170 mm 45.0 cal guns - 149.91lbs / 68.00kg shells, 250 per gun
     Breech loading guns in turret on barbette mounts, 1899 Model
     2 x Twin mounts on sides, forward deck aft
     2 x Twin mounts on sides, aft deck forward
      26 - 4.13" / 105 mm 45.0 cal guns - 35.27lbs / 16.00kg shells, 400 per gun
     Quick firing guns in casemate mounts, 1905 Model
     26 x Single mounts on sides, evenly spread
      2 raised mounts
      22 hull mounts in casemates- Limited use in heavy seas
      4 - 4.13" / 105 mm 45.0 cal guns - 35.27lbs / 16.00kg shells, 400 per gun
     Quick firing guns in deck mounts, 1905 Model
     4 x Single mounts on centreline, aft evenly spread
      4 raised mounts
      12 - 1.46" / 37.0 mm 43.0 cal guns - 1.10lbs / 0.50kg shells, 800 per gun
     Quick firing guns in deck mounts, 1905 Model
     12 x Single mounts on sides, evenly spread
      12 raised mounts
      Weight of broadside 7,430 lbs / 3,370 kg
      Main Torpedoes
      10 - 17.7" / 450 mm, 25.12 ft / 7.66 m torpedoes - 1.000 t each, 10.000 t total
   submerged side tubes
      2nd Torpedoes
      10 - 17.7" / 450 mm, 25.12 ft / 7.66 m torpedoes - 1.000 t each, 10.000 t total
   submerged bow tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   377.30 ft / 115.00 m   11.48 ft / 3.50 m
   Ends:   3.94" / 100 mm   180.45 ft / 55.00 m   11.48 ft / 3.50 m
   Upper:   1.97" / 50 mm   360.89 ft / 110.00 m   8.20 ft / 2.50 m
     Main Belt covers 104 % of normal length

   - Hull void:
      0.00" / 0 mm     0.00 ft / 0.00 m   0.00 ft / 0.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.8" / 300 mm   5.91" / 150 mm      9.84" / 250 mm
   2nd:   7.87" / 200 mm   1.97" / 50 mm      3.94" / 100 mm
   3rd:   3.94" / 100 mm         -               -
   4th:   0.79" / 20 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 1.97" / 50 mm
   Forecastle: 1.97" / 50 mm  Quarter deck: 1.97" / 50 mm

   - Conning towers: Forward 11.81" / 300 mm, Aft 11.81" / 300 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 45,000 shp / 33,570 Kw = 24.17 kts
   Range 10,500nm at 10.00 kts
   Bunker at max displacement = 3,371 tons (90% coal)

Complement:
   801 - 1,042

Cost:
   £1.517 million / $6.067 million

Distribution of weights at normal displacement:
   Armament: 1,439 tons, 7.7 %
      - Guns: 1,399 tons, 7.5 %
      - Weapons: 40 tons, 0.2 %
   Armour: 5,642 tons, 30.0 %
      - Belts: 2,736 tons, 14.6 %
      - Armament: 1,358 tons, 7.2 %
      - Armour Deck: 1,189 tons, 6.3 %
      - Conning Towers: 360 tons, 1.9 %
   Machinery: 2,228 tons, 11.9 %
   Hull, fittings & equipment: 6,232 tons, 33.2 %
   Fuel, ammunition & stores: 3,086 tons, 16.4 %
   Miscellaneous weights: 150 tons, 0.8 %
      - Hull below water: 30 tons 20t for torpedoes, 10t for climitazation
      - Hull void weights: 10 tons Reserve weight
      - Hull above water: 40 tons 20t VIP and 20t Flag accommodations
      - On freeboard deck: 50 tons Sehendes Auge
      - Above deck: 20 tons Markoni

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     25,032 lbs / 11,354 Kg = 28.9 x 12.0 " / 305 mm shells or 3.7 torpedoes
   Stability (Unstable if below 1.00): 1.16
   Metacentric height 4.9 ft / 1.5 m
   Roll period: 15.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.59
   Seaboat quality  (Average = 1.00): 1.25

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.565 / 0.574
   Length to Beam Ratio: 6.80 : 1
   'Natural speed' for length: 23.62 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   Bow angle (Positive = bow angles forward): -10.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  22.97 ft / 7.00 m,  22.15 ft / 6.75 m
      - Forward deck:   45.00 %,  22.15 ft / 6.75 m,  18.86 ft / 5.75 m
      - Aft deck:   20.00 %,  12.30 ft / 3.75 m,  12.30 ft / 3.75 m
      - Quarter deck:   15.00 %,  12.30 ft / 3.75 m,  12.30 ft / 3.75 m
      - Average freeboard:      18.03 ft / 5.50 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 75.8 %
      - Above water (accommodation/working, high = better): 138.4 %
   Waterplane Area: 32,379 Square feet or 3,008 Square metres
   Displacement factor (Displacement / loading): 114 %
   Structure weight / hull surface area: 150 lbs/sq ft or 731 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.53
      - 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

SS2 Version
Scharnhorst, Brandenburg Schlachtkreuzer laid down 1904 (Engine 1909)

Displacement:
   15,873 t light; 16,904 t standard; 18,777 t normal; 20,275 t full load

Dimensions: Length overall / water x beam x draught
   557.74 ft / 557.74 ft x 82.02 ft x 25.43 ft (normal load)
   170.00 m / 170.00 m x 25.00 m  x 7.75 m

Armament:
      6 - 12.01" / 305 mm guns (3x2 guns), 859.80lbs / 390.00kg shells, 1903 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority aft, 1 raised mount aft - superfiring
      8 - 6.69" / 170 mm guns (4x2 guns), 149.90lbs / 67.99kg shells, 1899 Model
     Breech loading guns in turrets (on barbettes)
     on side ends, evenly spread
      26 - 4.13" / 105 mm guns in single mounts, 35.27lbs / 16.00kg shells, 1905 Model
     Quick firing guns in casemate mounts
     on side, evenly spread, 2 raised mounts
     22 guns in hull casemates - Limited use in heavy seas
      4 - 4.13" / 105 mm guns in single mounts, 35.27lbs / 16.00kg shells, 1905 Model
     Quick firing guns in deck mounts
     on side, all aft, all raised mounts - superfiring
      12 - 1.46" / 37.0 mm guns in single mounts, 1.10lbs / 0.50kg shells, 1905 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 7,429 lbs / 3,370 kg
   Shells per gun, main battery: 150
   4 - 17.7" / 450 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   377.30 ft / 115.00 m   11.48 ft / 3.50 m
   Ends:   3.94" / 100 mm   180.45 ft / 55.00 m   11.48 ft / 3.50 m
   Upper:   1.97" / 50 mm   360.89 ft / 110.00 m   8.20 ft / 2.50 m
     Main Belt covers 104 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.8" / 300 mm   5.91" / 150 mm      9.84" / 250 mm
   2nd:   7.87" / 200 mm   1.97" / 50 mm      3.94" / 100 mm
   3rd:   3.94" / 100 mm         -               -
   4th:   0.79" / 20 mm         -               -

   - Armour deck: 1.97" / 50 mm, Conning tower: 11.81" / 300 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 45,000 shp / 33,570 Kw = 24.17 kts
   Range 10,500nm at 10.00 kts
   Bunker at max displacement = 3,371 tons (90% coal)

Complement:
   801 - 1,042

Cost:
   £1.652 million / $6.608 million

Distribution of weights at normal displacement:
   Armament: 934 tons, 5.0 %
   Armour: 5,727 tons, 30.5 %
      - Belts: 2,755 tons, 14.7 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 1,613 tons, 8.6 %
      - Armour Deck: 1,179 tons, 6.3 %
      - Conning Tower: 180 tons, 1.0 %
   Machinery: 2,228 tons, 11.9 %
   Hull, fittings & equipment: 6,834 tons, 36.4 %
   Fuel, ammunition & stores: 2,904 tons, 15.5 %
   Miscellaneous weights: 150 tons, 0.8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     22,940 lbs / 10,405 Kg = 26.5 x 12.0 " / 305 mm shells or 2.7 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 4.5 ft / 1.4 m
   Roll period: 16.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.59
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.565
   Length to Beam Ratio: 6.80 : 1
   'Natural speed' for length: 23.62 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   Bow angle (Positive = bow angles forward): -10.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      22.97 ft / 7.00 m
      - Forecastle (20 %):   22.15 ft / 6.75 m
      - Mid (65 %):      18.86 ft / 5.75 m (12.30 ft / 3.75 m aft of break)
      - Quarterdeck (15 %):   12.30 ft / 3.75 m
      - Stern:      12.30 ft / 3.75 m
      - Average freeboard:   18.03 ft / 5.50 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 80.9 %
      - Above water (accommodation/working, high = better): 138.4 %
   Waterplane Area: 32,379 Square feet or 3,008 Square metres
   Displacement factor (Displacement / loading): 105 %
   Structure weight / hull surface area: 149 lbs/sq ft or 730 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.49
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily