Fiddling with SpringSharp

[Darman]

First time I've touched SpringSharp in months.  Please do correct me and educate me.  I never did get used to the newest version of SS. 

This is the IJN Fuji-class battleship, reference (wikipedia) in notes.  I know there are many errors. 

Fuji, Empire of Japan Battleship laid down 1896
DESIGN FAILURE: Armour weight too much for hull

Displacement:
   11,252 t light; 11,803 t standard; 12,496 t normal; 13,050 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (421.00 ft / 421.00 ft) x 73.00 ft x (26.50 / 27.42 ft)
   (128.32 m / 128.32 m) x 22.25 m  x (8.08 / 8.36 m)

Armament:
      4 - 12.00" / 305 mm 45.0 cal guns - 850.00lbs / 385.55kg shells, 75 per gun
     Breech loading guns in turret on barbette mounts, 1896 Model
     2 x Twin mounts on centreline ends, evenly spread
      4 - 6.00" / 152 mm 45.0 cal guns - 108.92lbs / 49.41kg shells, 250 per gun
     Quick firing guns in casemate mounts, 1896 Model
     4 x Single mounts on sides amidships
      6 - 6.00" / 152 mm 45.0 cal guns - 108.92lbs / 49.41kg shells, 250 per gun
     Quick firing guns in deck mounts, 1896 Model
     6 x Single mounts on sides amidships
      6 raised mounts
      14 - 1.85" / 47.0 mm 45.0 cal guns - 3.19lbs / 1.45kg shells, 150 per gun
     Quick firing guns in deck mounts, 1896 Model
     14 x Single mounts on sides amidships
      14 raised mounts
      10 - 1.85" / 47.0 mm 45.0 cal guns - 2.50lbs / 1.13kg shells, 150 per gun
     Breech loading guns in deck mounts, 1896 Model
     10 x Single mounts on sides amidships
      Weight of broadside 4,559 lbs / 2,068 kg
      1 - 18.0" / 457 mm, 12.00 ft / 3.66 m torpedo - 0.386 t total
   In a submerged bow tube
      4 - 18.0" / 457 mm, 12.00 ft / 3.66 m torpedoes - 0.386 t each, 1.544 t total
   In 4 sets of submerged side tubes
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   18.0" / 457 mm   273.65 ft / 83.41 m   10.25 ft / 3.12 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length
   - Protected deck - single deck: 2.50" / 64 mm For and Aft decks
   Forecastle: 2.50" / 64 mm  Quarter deck: 2.50" / 64 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 12,277 ihp / 9,159 Kw = 18.00 kts
   Range 4,000nm at 10.00 kts
   Bunker at max displacement = 1,247 tons (100% coal)

Complement:
   590 - 768

Cost:
   £1.062 million / $4.246 million

Distribution of weights at normal displacement:
   Armament: 823 tons, 6.6 %
      - Guns: 821 tons, 6.6 %
      - Torpedoes: 2 tons, 0.0 %
   Machinery: 2,046 tons, 16.4 %
   Hull, fittings & equipment: NaN tons, NaN
   Fuel, ammunition & stores: 1,243 tons, 9.9 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     0 lbs / 0 Kg = 0.0 x 12.0 " / 305 mm shells or 1.0 torpedoes
   Stability (Unstable if below 1.00): NaN
   Metacentric height NaN ft / NaN m
   Roll period: NaN seconds
   Steadiness   - As gun platform (Average = 50 %): NaN %
         - Recoil effect (Restricted arc if above 1.00): 0.00
   Seaboat quality  (Average = 1.00): NaN

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.537 / 0.542
   Length to Beam Ratio: 5.77 : 1
   'Natural speed' for length: 20.52 kts
   Power going to wave formation at top speed: 44 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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 %,  0.00 ft / 0.00 m,  0.00 ft / 0.00 m
      - Forward deck:   30.00 %,  0.00 ft / 0.00 m,  0.00 ft / 0.00 m
      - Aft deck:   35.00 %,  0.00 ft / 0.00 m,  0.00 ft / 0.00 m
      - Quarter deck:   15.00 %,  0.00 ft / 0.00 m,  0.00 ft / 0.00 m
      - Average freeboard:      0.00 ft / 0.00 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 82.1 %
      - Above water (accommodation/working, high = better): 0.0 %
   Waterplane Area: 21,189 Square feet or 1,969 Square metres
   Displacement factor (Displacement / loading): NaN
   Structure weight / hull surface area: NaN lbs/sq ft or NaN Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: NaN
      - Longitudinal: NaN
      - Overall: NaN
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is extremely poor

Design Failure: Reduce armour or increase Displacement

http://en.wikipedia.org/wiki/Fuji_class_battleship

Edit:  Apparently I forgot freeboard...

[Darman]

With freeboard this time:

Fuji, Empire of Japan Battleship laid down 1896

Displacement:
   11,252 t light; 11,803 t standard; 12,496 t normal; 13,050 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (421.00 ft / 421.00 ft) x 73.00 ft x (26.50 / 27.42 ft)
   (128.32 m / 128.32 m) x 22.25 m  x (8.08 / 8.36 m)

Armament:
      4 - 12.00" / 305 mm 45.0 cal guns - 850.00lbs / 385.55kg shells, 75 per gun
     Breech loading guns in turret on barbette mounts, 1896 Model
     2 x Twin mounts on centreline ends, evenly spread
      4 - 6.00" / 152 mm 45.0 cal guns - 108.92lbs / 49.41kg shells, 250 per gun
     Quick firing guns in casemate mounts, 1896 Model
     4 x Single mounts on sides, evenly spread
      6 - 6.00" / 152 mm 45.0 cal guns - 108.92lbs / 49.41kg shells, 250 per gun
     Quick firing guns in deck mounts, 1896 Model
     6 x Single mounts on sides, evenly spread
      6 raised mounts
      14 - 1.85" / 47.0 mm 45.0 cal guns - 3.19lbs / 1.45kg shells, 150 per gun
     Quick firing guns in deck mounts, 1896 Model
     14 x Single mounts on sides, evenly spread
      14 raised mounts
      10 - 1.85" / 47.0 mm 45.0 cal guns - 2.50lbs / 1.13kg shells, 150 per gun
     Breech loading guns in deck mounts, 1896 Model
     10 x Single mounts on sides, evenly spread
      Weight of broadside 4,559 lbs / 2,068 kg
      1 - 18.0" / 457 mm, 12.00 ft / 3.66 m torpedo - 0.386 t total
   In a submerged bow tube
      4 - 18.0" / 457 mm, 12.00 ft / 3.66 m torpedoes - 0.386 t each, 1.544 t total
   In 4 sets of submerged side tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   18.0" / 457 mm   273.65 ft / 83.41 m   10.25 ft / 3.12 m
   Ends:   Unarmoured
   Upper:   4.00" / 102 mm   273.65 ft / 83.41 m   8.00 ft / 2.44 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   14.0" / 356 mm   4.00" / 102 mm      14.0" / 356 mm
   2nd:   6.00" / 152 mm         -               -
   3rd:   1.00" / 25 mm         -               -

   - Protected deck - single deck: 2.50" / 64 mm For and Aft decks
   Forecastle: 2.50" / 64 mm  Quarter deck: 2.50" / 64 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 12,277 ihp / 9,159 Kw = 18.00 kts
   Range 4,000nm at 10.00 kts
   Bunker at max displacement = 1,247 tons (100% coal)

Complement:
   590 - 768

Cost:
   £1.062 million / $4.246 million

Distribution of weights at normal displacement:
   Armament: 823 tons, 6.6 %
      - Guns: 821 tons, 6.6 %
      - Torpedoes: 2 tons, 0.0 %
   Armour: 4,468 tons, 35.8 %
      - Belts: 2,614 tons, 20.9 %
      - Armament: 865 tons, 6.9 %
      - Armour Deck: 988 tons, 7.9 %
   Machinery: 2,046 tons, 16.4 %
   Hull, fittings & equipment: 3,915 tons, 31.3 %
   Fuel, ammunition & stores: 1,243 tons, 9.9 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     16,436 lbs / 7,455 Kg = 19.0 x 12.0 " / 305 mm shells or 2.2 torpedoes
   Stability (Unstable if below 1.00): 1.27
   Metacentric height 4.8 ft / 1.5 m
   Roll period: 14.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 98 %
         - Recoil effect (Restricted arc if above 1.00): 0.66
   Seaboat quality  (Average = 1.00): 1.96

Hull form characteristics:
   Hull has low forecastle, low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.537 / 0.542
   Length to Beam Ratio: 5.77 : 1
   'Natural speed' for length: 20.52 kts
   Power going to wave formation at top speed: 44 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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 %,  14.00 ft / 4.27 m,  14.00 ft / 4.27 m
      - Forward deck:   30.00 %,  19.00 ft / 5.79 m,  19.00 ft / 5.79 m
      - Aft deck:   35.00 %,  19.00 ft / 5.79 m,  19.00 ft / 5.79 m
      - Quarter deck:   15.00 %,  14.00 ft / 4.27 m,  14.00 ft / 4.27 m
      - Average freeboard:      17.25 ft / 5.26 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 82.1 %
      - Above water (accommodation/working, high = better): 130.0 %
   Waterplane Area: 21,189 Square feet or 1,969 Square metres
   Displacement factor (Displacement / loading): 103 %
   Structure weight / hull surface area: 135 lbs/sq ft or 658 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.90
      - Longitudinal: 2.62
      - 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
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

http://en.wikipedia.org/wiki/Fuji_class_battleship

[snip]

Few comments:

The guns should be L40 not L45. This will save you some composite strength
You can have the 6" guns grouped under one section, and just do two separate mounting setups.
The deck would be an armored deck as opposed to a protected one. I dont think this changes much about the design strength-wise

That is it for now. Not a bad design.

[Darman]

The diagram showed the armored deck as leaving the top two decks open, does that make a difference?

Also, the original design calls for the 26 47mm guns (3pdrs and 2 1/2pdrs).  Would it make more sense to run with just one variant (I was thinking the 3pdr variant) and use fewer guns? 

[KWorld]

The freeboard, judging by the pictures, should be level or relatively so, fore and aft, no bow or stern cutaways like you have.

From the Wiki article on the armor:

Armour

The armour scheme of the Fuji class ships was similar to that used by the Royal Sovereigns except that the Japanese ships used superior
Harvey armour with the same thicknesses. The waterline main belt was 8 feet (2.4 m) high, 3 feet (0.9 m) of which was above the waterline at
normal load, and had a maximum thickness of 18 inches (457 mm). It reduced to 16 inches (406 mm) then 14 inches (356 mm) at the ends past the two barbettes; above it was a 4-inch (102 mm) strake of armor that ran between the barbettes. They were 14 inches thick outside the upper armor belt and reduced to 9 inches (229 mm) behind the upper belt. Diagonal bulkheads connected the barbettes to the side armor; the forward bulkhead was 14 inches thick while the rear bulkhead was 12 inches (305 mm) thick. The armour of the casemates and the barbette hoods had a maximum thickness of six inches while the conning tower was protected by 14 inches of armour. The deck armour was 2.5 inches (64 mm) thick and met the sides of the ship at the top of the main armour belt.[4][5]

Nice to have all the detail.  Looks like you need end armor, the height of the belt should be reduced to 8', and the turret armor should be lightened to 6".  Interesting that the description and the diagram from Brassey's don't really agree on the end armor, though.

[Darman]

I agree the freeboard should be level.  I was trying to figure out how the main guns could be at the main deck level in covered barbettes (described as turrets) along with the casemated guns.  Barbette armor I used the diagram which said 14 inches and then a 4in upper belt.  I wasn't managing to get an upper belt until I added the additional freeboard.  Or maybe I was doing something wrong. 

[Darman]

I changed the freeboard and the height of the belt armor.  The upper belt armor height I didn't change.  I left the turret armor the same for now. 

Fuji, Empire of Japan Battleship laid down 1896

Displacement:
   11,263 t light; 11,803 t standard; 12,496 t normal; 13,050 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (421.00 ft / 421.00 ft) x 73.00 ft x (26.50 / 27.42 ft)
   (128.32 m / 128.32 m) x 22.25 m  x (8.08 / 8.36 m)

Armament:
      4 - 12.00" / 305 mm 40.0 cal guns - 828.07lbs / 375.60kg shells, 75 per gun
     Breech loading guns in turret on barbette mounts, 1896 Model
     2 x Twin mounts on centreline ends, evenly spread
      4 - 6.00" / 152 mm 40.0 cal guns - 103.51lbs / 46.95kg shells, 250 per gun
     Quick firing guns in casemate mounts, 1896 Model
     4 x Single mounts on sides, evenly spread
      6 - 6.00" / 152 mm 40.0 cal guns - 103.51lbs / 46.95kg shells, 250 per gun
     Quick firing guns in deck mounts, 1896 Model
     6 x Single mounts on sides, evenly spread
      6 raised mounts
      14 - 1.85" / 47.0 mm 40.0 cal guns - 3.04lbs / 1.38kg shells, 150 per gun
     Quick firing guns in deck mounts, 1896 Model
     14 x Single mounts on sides, evenly spread
      14 raised mounts
      10 - 1.85" / 47.0 mm 40.0 cal guns - 3.04lbs / 1.38kg shells, 150 per gun
     Breech loading guns in deck mounts, 1896 Model
     10 x Single mounts on sides, evenly spread
      Weight of broadside 4,420 lbs / 2,005 kg
      1 - 18.0" / 457 mm, 12.00 ft / 3.66 m torpedo - 0.386 t total
   In a submerged bow tube
      4 - 18.0" / 457 mm, 12.00 ft / 3.66 m torpedoes - 0.386 t each, 1.544 t total
   In 4 sets of submerged side tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   18.0" / 457 mm   273.65 ft / 83.41 m   8.00 ft / 2.44 m
   Ends:   Unarmoured
   Upper:   4.00" / 102 mm   273.65 ft / 83.41 m   8.00 ft / 2.44 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   14.0" / 356 mm   4.00" / 102 mm      14.0" / 356 mm
   2nd:   6.00" / 152 mm         -               -
   3rd:   1.00" / 25 mm         -               -

   - Armoured deck - single deck: 2.50" / 64 mm For and Aft decks
   Forecastle: 2.50" / 64 mm  Quarter deck: 2.50" / 64 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 12,277 ihp / 9,159 Kw = 18.00 kts
   Range 4,000nm at 10.00 kts
   Bunker at max displacement = 1,247 tons (100% coal)

Complement:
   590 - 768

Cost:
   £1.003 million / $4.011 million

Distribution of weights at normal displacement:
   Armament: 696 tons, 5.6 %
      - Guns: 694 tons, 5.6 %
      - Torpedoes: 2 tons, 0.0 %
   Armour: 3,818 tons, 30.6 %
      - Belts: 2,125 tons, 17.0 %
      - Armament: 705 tons, 5.6 %
      - Armour Deck: 988 tons, 7.9 %
   Machinery: 2,046 tons, 16.4 %
   Hull, fittings & equipment: 4,703 tons, 37.6 %
   Fuel, ammunition & stores: 1,232 tons, 9.9 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     15,742 lbs / 7,140 Kg = 18.2 x 12.0 " / 305 mm shells or 2.3 torpedoes
   Stability (Unstable if below 1.00): 1.35
   Metacentric height 5.3 ft / 1.6 m
   Roll period: 13.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 82 %
         - Recoil effect (Restricted arc if above 1.00): 0.39
   Seaboat quality  (Average = 1.00): 1.65

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.537 / 0.542
   Length to Beam Ratio: 5.77 : 1
   'Natural speed' for length: 20.52 kts
   Power going to wave formation at top speed: 44 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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 %,  14.36 ft / 4.38 m,  14.36 ft / 4.38 m
      - Forward deck:   30.00 %,  14.36 ft / 4.38 m,  14.36 ft / 4.38 m
      - Aft deck:   35.00 %,  14.36 ft / 4.38 m,  14.36 ft / 4.38 m
      - Quarter deck:   15.00 %,  14.36 ft / 4.38 m,  14.36 ft / 4.38 m
      - Average freeboard:      14.36 ft / 4.38 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 78.2 %
      - Above water (accommodation/working, high = better): 98.2 %
   Waterplane Area: 21,189 Square feet or 1,969 Square metres
   Displacement factor (Displacement / loading): 114 %
   Structure weight / hull surface area: 163 lbs/sq ft or 798 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.17
      - Longitudinal: 2.75
      - Overall: 1.27
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

http://en.wikipedia.org/wiki/Fuji_class_battleship

[Darman]

Here is the second Japanese battleship Shikishima

Shikishima, Empire of Japan Battleship laid down 1899

Displacement:
   13,204 t light; 14,089 t standard; 15,000 t normal; 15,729 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (438.00 ft / 438.00 ft) x 75.50 ft x (27.00 / 28.07 ft)
   (133.50 m / 133.50 m) x 23.01 m  x (8.23 / 8.55 m)

Armament:
      4 - 12.00" / 305 mm 40.0 cal guns - 850.00lbs / 385.55kg shells, 150 per gun
     Breech loading guns in turret on barbette mounts, 1899 Model
     2 x Twin mounts on centreline ends, evenly spread
      14 - 6.00" / 152 mm 40.0 cal guns - 100.00lbs / 45.36kg shells, 250 per gun
     Quick firing guns in casemate mounts, 1899 Model
     8 x Single mounts on sides amidships
     6 x Single mounts on sides amidships
      6 raised mounts
      20 - 3.00" / 76.2 mm 45.0 cal guns - 12.50lbs / 5.67kg shells, 750 per gun
     Quick firing guns in deck mounts, 1899 Model
     20 x Single mounts on sides amidships
      20 raised mounts
      4 - 1.85" / 47.0 mm 45.0 cal guns - 2.50lbs / 1.13kg shells, 150 per gun
     Quick firing guns in deck mounts, 1899 Model
     4 x Single mounts on sides amidships
      4 raised mounts
      Weight of broadside 5,060 lbs / 2,295 kg
      4 - 18.0" / 457 mm, 12.00 ft / 3.66 m torpedoes - 0.431 t each, 1.724 t total
   In 4 sets of submerged side tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.00" / 229 mm   220.00 ft / 67.06 m   8.00 ft / 2.44 m
   Ends:   4.00" / 102 mm   153.28 ft / 46.72 m   8.00 ft / 2.44 m
     64.72 ft / 19.73 m Unarmoured ends
   Upper:   6.00" / 152 mm   220.00 ft / 67.06 m   8.00 ft / 2.44 m
     Main Belt covers 77 % of normal length
     Main belt does not fully cover magazines and engineering spaces

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   14.0" / 356 mm   3.00" / 76 mm      10.0" / 254 mm
   2nd:   6.00" / 152 mm         -               -

   - Armoured deck - multiple decks: 2.50" / 64 mm For and Aft decks
   Forecastle: 2.50" / 64 mm  Quarter deck: 2.50" / 64 mm

   - Conning towers: Forward 14.00" / 356 mm,  Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 16,960 ihp / 12,652 Kw = 19.00 kts
   Range 5,000nm at 10.00 kts
   Bunker at max displacement = 1,640 tons (100% coal)

Complement:
   677 - 881

Cost:
   £1.189 million / $4.756 million

Distribution of weights at normal displacement:
   Armament: 799 tons, 5.3 %
      - Guns: 797 tons, 5.3 %
      - Torpedoes: 2 tons, 0.0 %
   Armour: 3,370 tons, 22.5 %
      - Belts: 1,431 tons, 9.5 %
      - Armament: 640 tons, 4.3 %
      - Armour Deck: 1,115 tons, 7.4 %
      - Conning Tower: 183 tons, 1.2 %
   Machinery: 2,692 tons, 17.9 %
   Hull, fittings & equipment: 6,343 tons, 42.3 %
   Fuel, ammunition & stores: 1,796 tons, 12.0 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     17,918 lbs / 8,127 Kg = 20.7 x 12.0 " / 305 mm shells or 2.3 torpedoes
   Stability (Unstable if below 1.00): 1.41
   Metacentric height 5.9 ft / 1.8 m
   Roll period: 13.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.33
   Seaboat quality  (Average = 1.00): 1.45

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.588 / 0.593
   Length to Beam Ratio: 5.80 : 1
   'Natural speed' for length: 20.93 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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 %,  14.65 ft / 4.47 m,  14.65 ft / 4.47 m
      - Forward deck:   30.00 %,  14.65 ft / 4.47 m,  14.65 ft / 4.47 m
      - Aft deck:   35.00 %,  14.65 ft / 4.47 m,  14.65 ft / 4.47 m
      - Quarter deck:   15.00 %,  14.65 ft / 4.47 m,  14.65 ft / 4.47 m
      - Average freeboard:      14.65 ft / 4.47 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 82.8 %
      - Above water (accommodation/working, high = better): 98.6 %
   Waterplane Area: 23,916 Square feet or 2,222 Square metres
   Displacement factor (Displacement / loading): 124 %
   Structure weight / hull surface area: 197 lbs/sq ft or 964 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.47
      - Longitudinal: 3.03
      - Overall: 1.58
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

http://en.wikipedia.org/wiki/Shikishima_class_battleship

[KWorld]

On Shikishima, don't use the turret roof thickness as the straight-up value for "other gunhouse" armor, that will give you too low a value for the side and rear armor.  You're probably better off going with 6" armor here, and reducing the turret fronts to 10" here.


On the revised Fuji, you still need your 14" end armor, which you have enough strength to add it looks like.

On both: I realize that the entries (and the Brits themselves) called the 6" guns "quick firing", but in SS terms, they're not since they are separate loading (shell is loaded and rammed, then the propellant casing is loaded), they're breach loaders.


What it looks like is happening is that the change from compound (iron and steel) armor or Harvey process armor is happening at the same time a size increase is happening.   The Shikishimas are carrying less thickness of armor (because Harvey process armor is much more resistant to penetration) over a relatively similar area, on a bigger hull.

[Darman]

I messed something up.  Not sure what.  It says the armor is too heavy but even when i eliminated all the armor it still said it was too heavy. 

Fuji, Empire of Japan Battleship laid down 1896
DESIGN FAILURE: Armour weight too much for hull

Displacement:
   11,253 t light; 11,807 t standard; 12,500 t normal; 13,054 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (421.00 ft / 421.00 ft) x 73.00 ft x (26.50 / 27.42 ft)
   (128.32 m / 128.32 m) x 22.25 m  x (8.08 / 8.36 m)

Armament:
      4 - 12.00" / 305 mm 40.0 cal guns - 828.07lbs / 375.61kg shells, 75 per gun
     Breech loading guns in turret on barbette mounts, 1896 Model
     2 x Twin mounts on centreline ends, evenly spread
      10 - 6.00" / 152 mm 40.0 cal guns - 103.51lbs / 46.95kg shells, 250 per gun
     Breech loading guns in casemate mounts, 1896 Model
     4 x Single mounts on sides, evenly spread
     6 x Single mounts on sides, evenly spread
      6 raised mounts
      14 - 1.85" / 47.0 mm 40.0 cal guns - 3.20lbs / 1.45kg shells, 750 per gun
     Quick firing guns in deck mounts, 1896 Model
     14 x Single mounts on sides, evenly spread
      14 raised mounts
      10 - 1.85" / 47.0 mm 40.0 cal guns - 2.50lbs / 1.13kg shells, 150 per gun
     Quick firing guns in deck mounts, 1896 Model
     10 x Single mounts on sides, evenly spread
      10 raised mounts
      Weight of broadside 4,417 lbs / 2,004 kg
      1 - 18.0" / 457 mm, 12.00 ft / 3.66 m torpedo - 0.386 t total
   In a submerged bow tube
      4 - 18.0" / 457 mm, 12.00 ft / 3.66 m torpedoes - 0.386 t each, 1.544 t total
   In 4 sets of submerged side tubes
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   18.0" / 457 mm   273.65 ft / 83.41 m   8.00 ft / 2.44 m
   Ends:   14.0" / 356 mm   147.33 ft / 44.91 m   8.00 ft / 2.44 m
   Upper:   4.00" / 102 mm   273.65 ft / 83.41 m   8.00 ft / 2.44 m
     Main Belt covers 100 % of normal length
   - Armoured deck - single deck: 2.50" / 64 mm For and Aft decks
   Forecastle: 2.50" / 64 mm  Quarter deck: 2.50" / 64 mm
   - Conning towers: Forward 14.00" / 356 mm,  Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 12,280 ihp / 9,161 Kw = 18.00 kts
   Range 4,000nm at 10.00 kts
   Bunker at max displacement = 1,247 tons (100% coal)

Complement:
   590 - 768

Cost:
   £1.002 million / $4.010 million

Distribution of weights at normal displacement:
   Armament: 677 tons, 5.4 %
      - Guns: 675 tons, 5.4 %
      - Torpedoes: 2 tons, 0.0 %
   Machinery: 2,047 tons, 16.4 %
   Hull, fittings & equipment: NaN tons, NaN
   Fuel, ammunition & stores: 1,247 tons, 10.0 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     0 lbs / 0 Kg = 0.0 x 12.0 " / 305 mm shells or 1.0 torpedoes
   Stability (Unstable if below 1.00): NaN
   Metacentric height NaN ft / NaN m
   Roll period: NaN seconds
   Steadiness   - As gun platform (Average = 50 %): NaN %
         - Recoil effect (Restricted arc if above 1.00): 0.44
   Seaboat quality  (Average = 1.00): NaN

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.537 / 0.542
   Length to Beam Ratio: 5.77 : 1
   'Natural speed' for length: 20.52 kts
   Power going to wave formation at top speed: 44 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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 %,  14.36 ft / 4.38 m,  14.36 ft / 4.38 m
      - Forward deck:   30.00 %,  14.36 ft / 4.38 m,  14.36 ft / 4.38 m
      - Aft deck:   35.00 %,  14.36 ft / 4.38 m,  14.36 ft / 4.38 m
      - Quarter deck:   15.00 %,  14.36 ft / 4.38 m,  14.36 ft / 4.38 m
      - Average freeboard:      14.36 ft / 4.38 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 78.3 %
      - Above water (accommodation/working, high = better): 98.2 %
   Waterplane Area: 21,193 Square feet or 1,969 Square metres
   Displacement factor (Displacement / loading): NaN
   Structure weight / hull surface area: NaN lbs/sq ft or NaN Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: NaN
      - Longitudinal: NaN
      - Overall: NaN
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is adequate

Design Failure: Reduce armour or increase Displacement

http://en.wikipedia.org/wiki/Fuji_class_battleship

[Darman]

1899 design.  Asahi ("Rising Sun")-class pre-dreadnought

Asahi, Empire of Japan Battleship laid down 1899

Displacement:
   12,918 t light; 13,797 t standard; 15,400 t normal; 16,683 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (425.25 ft / 425.25 ft) x 75.00 ft x (27.25 / 29.14 ft)
   (129.62 m / 129.62 m) x 22.86 m  x (8.31 / 8.88 m)

Armament:
      4 - 12.00" / 305 mm 40.0 cal guns - 850.00lbs / 385.55kg shells, 150 per gun
     Breech loading guns in turret on barbette mounts, 1899 Model
     2 x Twin mounts on centreline ends, evenly spread
      14 - 6.00" / 152 mm 45.0 cal guns - 100.00lbs / 45.36kg shells, 250 per gun
     Breech loading guns in casemate mounts, 1899 Model
     8 x Single mounts on sides, evenly spread
     6 x Single mounts on sides, evenly spread
      6 raised mounts
      20 - 3.00" / 76.2 mm 45.0 cal guns - 12.50lbs / 5.67kg shells, 500 per gun
     Quick firing guns in deck mounts, 1899 Model
     20 x Single mounts on sides, evenly spread
      16 - 1.85" / 47.0 mm 45.0 cal guns - 3.19lbs / 1.45kg shells, 750 per gun
     Quick firing guns in deck mounts, 1899 Model
     16 x Single mounts on sides, evenly spread
      16 raised mounts
      Weight of broadside 5,101 lbs / 2,314 kg
      4 - 18.0" / 457 mm, 12.00 ft / 3.66 m torpedoes - 0.431 t each, 1.724 t total
   In 4 sets of submerged side tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.00" / 229 mm   250.00 ft / 76.20 m   10.39 ft / 3.17 m
   Ends:   4.00" / 102 mm   148.82 ft / 45.36 m   10.39 ft / 3.17 m
     26.43 ft / 8.06 m Unarmoured ends
     Main Belt covers 90 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   14.0" / 356 mm   6.00" / 152 mm      10.0" / 254 mm
   2nd:   6.00" / 152 mm   2.00" / 51 mm            -

   - Armoured deck - multiple decks: 2.50" / 64 mm For and Aft decks
   Forecastle: 2.50" / 64 mm  Quarter deck: 2.50" / 64 mm

   - Conning towers: Forward 14.00" / 356 mm,  Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 14,297 ihp / 10,665 Kw = 18.00 kts
   Range 9,000nm at 10.00 kts
   Bunker at max displacement = 2,886 tons (100% coal)

Complement:
   690 - 898

Cost:
   £1.133 million / $4.533 million

Distribution of weights at normal displacement:
   Armament: 815 tons, 5.3 %
      - Guns: 814 tons, 5.3 %
      - Torpedoes: 2 tons, 0.0 %
   Armour: 3,365 tons, 21.9 %
      - Belts: 1,301 tons, 8.4 %
      - Armament: 770 tons, 5.0 %
      - Armour Deck: 1,108 tons, 7.2 %
      - Conning Tower: 187 tons, 1.2 %
   Machinery: 2,269 tons, 14.7 %
   Hull, fittings & equipment: 6,468 tons, 42.0 %
   Fuel, ammunition & stores: 2,482 tons, 16.1 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     20,856 lbs / 9,460 Kg = 24.1 x 12.0 " / 305 mm shells or 2.7 torpedoes
   Stability (Unstable if below 1.00): 1.44
   Metacentric height 6.1 ft / 1.9 m
   Roll period: 12.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 75 %
         - Recoil effect (Restricted arc if above 1.00): 0.32
   Seaboat quality  (Average = 1.00): 1.51

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.620 / 0.628
   Length to Beam Ratio: 5.67 : 1
   'Natural speed' for length: 20.62 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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 %,  15.50 ft / 4.72 m,  14.50 ft / 4.42 m
      - Forward deck:   30.00 %,  14.44 ft / 4.40 m,  14.44 ft / 4.40 m
      - Aft deck:   35.00 %,  14.44 ft / 4.40 m,  14.44 ft / 4.40 m
      - Quarter deck:   15.00 %,  14.44 ft / 4.40 m,  14.44 ft / 4.40 m
      - Average freeboard:      14.53 ft / 4.43 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 72.5 %
      - Above water (accommodation/working, high = better): 94.7 %
   Waterplane Area: 23,769 Square feet or 2,208 Square metres
   Displacement factor (Displacement / loading): 135 %
   Structure weight / hull surface area: 203 lbs/sq ft or 991 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.53
      - Longitudinal: 3.20
      - Overall: 1.64
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

http://en.wikipedia.org/wiki/Japanese_battleship_Asahi
plus 4 coincidental rangefinders (line of sight)

[KWorld]

On revised Fuji, check your gun armor, since that section is not showing up at all in the report, that might be where the problem is.


On the Asahi , this site http://www.clydesite.co.uk/clydebuilt/viewship.asp?id=5173 gives it a range of 9000 miles at 10 knots, which might use up some of that excess strength you have.

[Darman]

On revised Fuji, check your gun armor, since that section is not showing up at all in the report, that might be where the problem is.

Doesn't seem to work. 

On the Asahi , this site http://www.clydesite.co.uk/clydebuilt/viewship.asp?id=5173 gives it a range of 9000 miles at 10 knots, which might use up some of that excess strength you have.

Already has a 9,000nm range

[KWorld]

On revised Fuji, check your gun armor, since that section is not showing up at all in the report, that might be where the problem is.

Doesn't seem to work. 

Post the .sship file, maybe I can find the problem.

On the Asahi , this site http://www.clydesite.co.uk/clydebuilt/viewship.asp?id=5173 gives it a range of 9000 miles at 10 knots, which might use up some of that excess strength you have.

Already has a 9,000nm range

Whoops, I was apparently remembering Shikishima's range as Asahi's.

[Darman]

Here it is