Logi's Design Studies

[maddox]

The latest design still is AoN.

For an non AoN ship you need end and upper armor, and that thick enough to keep out cruiser shells.

Having  4" guns, with hoists, just a waste of weight. 4" is easely enough handled without  heavy technological help.  Also, it requires the relevant tech from cruisers.

[Logi]

@Sam
Refer to my comment where I said I would have to delay the plans

The secondares are now CASEMATES

The 2" torepdo bulkhead is what I would consider TDA

Seaboat Quality can be improved, I will do so in my next update (around 1.23)

Armour was increased to 13.2"

Turret armour will also be increased in the next update

@maddox
AoN: See the first thing I said in this post

4" guns with hoists: I switched to castemates

EDIT: I noticed I had forgotten to save the design I used last still had mount and hoist on, it will be fixed.

[Logi]

New version, following Borys's comments:
Lowered belt thickness to 12", raised deck thickness to 3", increased turret thickness, reduced length of armour to cmpenstate for the increased weight.

Bo-Wu, RRC Haze Class laid down 1915 (Engine 1912)

Displacement:
   26,979 t light; 28,259 t standard; 30,644 t normal; 32,552 t full load

Dimensions: Length overall / water x beam x draught
   721.00 ft / 721.00 ft x 94.90 ft x 25.00 ft (normal load)
   219.76 m / 219.76 m x 28.93 m  x 7.62 m

Armament:
      4 - 14.00" / 356 mm guns (2x2 guns), 1,372.00lbs / 622.33kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      4 - 14.00" / 356 mm guns (2x2 guns), 1,372.00lbs / 622.33kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all amidships
      16 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1915 Model
     Quick firing guns in casemate mounts
     on side, evenly spread
   Weight of broadside 11,488 lbs / 5,211 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   400.00 ft / 121.92 m   23.00 ft / 7.01 m
   Ends:   Unarmoured
     Main Belt covers 85 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   370.00 ft / 112.78 m   25.00 ft / 7.62 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12.0" / 305 mm   10.0" / 254 mm      12.0" / 305 mm
   2nd:   12.0" / 305 mm   10.0" / 254 mm      12.0" / 305 mm
   3rd:   3.00" / 76 mm   2.00" / 51 mm      2.00" / 51 mm

   - Armour deck: 3.00" / 76 mm, Conning tower: 5.00" / 127 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 56,002 shp / 41,778 Kw = 24.00 kts
   Range 7,046nm at 12.00 kts
   Bunker at max displacement = 4,293 tons (100% coal)

Complement:
   1,157 - 1,505

Cost:
   £3.628 million / $14.513 million

Distribution of weights at normal displacement:
   Armament: 1,436 tons, 4.7 %
   Armour: 10,936 tons, 35.7 %
      - Belts: 4,903 tons, 16.0 %
      - Torpedo bulkhead: 685 tons, 2.2 %
      - Armament: 2,396 tons, 7.8 %
      - Armour Deck: 2,848 tons, 9.3 %
      - Conning Tower: 105 tons, 0.3 %
   Machinery: 2,456 tons, 8.0 %
   Hull, fittings & equipment: 11,850 tons, 38.7 %
   Fuel, ammunition & stores: 3,665 tons, 12.0 %
   Miscellaneous weights: 300 tons, 1.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     49,392 lbs / 22,404 Kg = 36.0 x 14.0 " / 356 mm shells or 8.1 torpedoes
   Stability (Unstable if below 1.00): 1.20
   Metacentric height 6.5 ft / 2.0 m
   Roll period: 15.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.46
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.627
   Length to Beam Ratio: 7.60 : 1
   'Natural speed' for length: 26.85 kts
   Power going to wave formation at top speed: 43 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   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:      18.00 ft / 5.49 m
      - Forecastle (20 %):   18.00 ft / 5.49 m
      - Mid (50 %):      18.00 ft / 5.49 m
      - Quarterdeck (15 %):   18.00 ft / 5.49 m
      - Stern:      18.00 ft / 5.49 m
      - Average freeboard:   18.00 ft / 5.49 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 79.8 %
      - Above water (accommodation/working, high = better): 152.1 %
   Waterplane Area: 51,317 Square feet or 4,767 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 176 lbs/sq ft or 859 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.04
      - Longitudinal: 0.98
      - 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

[Guinness]

Truthfully, is the intention of the 1" limit on mount and hoist protection really meant of capital ships? I understand it as a measure to prevent heavily armored main gun mounts on protected cruisers before the applicable tech is acquired, but I don't see it as so relevant on a battleship.

Or maybe a better question is: is it ok to put battleship secondaries in turret and barbette mounts if they are below 6.5"? With AoN, the designer would have little use for either mount and hoist nor turret and barbette secondaries of more than about 1.5" or 2" of armor (or whatever one might consider likely to set off the enemies MB AP rounds), but 1" seems a little thin for splinter protection in the BB circumstance.

[Tanthalas]

Truthfully, is the intention of the 1" limit on mount and hoist protection really meant of capital ships? I understand it as a measure to prevent heavily armored main gun mounts on protected cruisers before the applicable tech is acquired, but I don't see it as so relevant on a battleship.

Or maybe a better question is: is it ok to put battleship secondaries in turret and barbette mounts if they are below 6.5"? With AoN, the designer would have little use for either mount and hoist nor turret and barbette secondaries of more than about 1.5" or 2" of armor (or whatever one might consider likely to set off the enemies MB AP rounds), but 1" seems a little thin for splinter protection in the BB circumstance.

the US twin 5" used on the Iowas and the other BBs only had a 3" face, 1" sides and roof, and 1" below decks.  I think this is what they drew the rule from.

[Logi]

BB12 Project, RRC Battleship laid down 1915 (Engine 1912)

Displacement:
   21,102 t light; 22,165 t standard; 23,893 t normal; 25,276 t full load

Dimensions: Length overall / water x beam x draught
   635.00 ft / 625.00 ft x 79.60 ft x 25.90 ft (normal load)
   193.55 m / 190.50 m x 24.26 m  x 7.89 m

Armament:
      9 - 13.00" / 330 mm guns (3x3 guns), 1,098.50lbs / 498.27kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward, 1 raised mount - superfiring
      16 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1915 Model
     Quick firing guns in casemate mounts
     on side, all amidships
   Weight of broadside 10,399 lbs / 4,717 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   330.00 ft / 100.58 m   14.00 ft / 4.27 m
   Ends:   4.00" / 102 mm   295.00 ft / 89.92 m   23.00 ft / 7.01 m
   Upper:   6.00" / 152 mm   330.00 ft / 100.58 m   9.00 ft / 2.74 m
     Main Belt covers 81 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.0" / 330 mm   8.00" / 203 mm      12.0" / 305 mm
   2nd:   3.00" / 76 mm   2.00" / 51 mm      2.00" / 51 mm

   - Armour deck: 2.50" / 64 mm, Conning tower: 8.00" / 203 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 49,599 shp / 37,001 Kw = 24.00 kts
   Range 6,067nm at 12.00 kts
   Bunker at max displacement = 3,111 tons (100% coal)

Complement:
   960 - 1,249

Cost:
   £3.105 million / $12.422 million

Distribution of weights at normal displacement:
   Armament: 1,300 tons, 5.4 %
   Armour: 8,375 tons, 35.1 %
      - Belts: 4,279 tons, 17.9 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 2,192 tons, 9.2 %
      - Armour Deck: 1,761 tons, 7.4 %
      - Conning Tower: 143 tons, 0.6 %
   Machinery: 2,175 tons, 9.1 %
   Hull, fittings & equipment: 8,952 tons, 37.5 %
   Fuel, ammunition & stores: 2,791 tons, 11.7 %
   Miscellaneous weights: 300 tons, 1.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     32,307 lbs / 14,654 Kg = 29.4 x 13.0 " / 330 mm shells or 3.2 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 4.2 ft / 1.3 m
   Roll period: 16.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.85
   Seaboat quality  (Average = 1.00): 1.22

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.649
   Length to Beam Ratio: 7.85 : 1
   'Natural speed' for length: 25.00 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 41
   Bow angle (Positive = bow angles forward): 19.30 degrees
   Stern overhang: 3.00 ft / 0.91 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      20.00 ft / 6.10 m
      - Forecastle (25 %):   20.00 ft / 6.10 m
      - Mid (50 %):      19.00 ft / 5.79 m
      - Quarterdeck (15 %):   19.00 ft / 5.79 m
      - Stern:      19.00 ft / 5.79 m
      - Average freeboard:   19.38 ft / 5.91 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 72.2 %
      - Above water (accommodation/working, high = better): 145.1 %
   Waterplane Area: 38,076 Square feet or 3,537 Square metres
   Displacement factor (Displacement / loading): 102 %
   Structure weight / hull surface area: 164 lbs/sq ft or 802 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.22
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Good seaboat, rides out heavy weather easily

EDIT: Switched Range and Cruise Speed values by mistake; fixed
Forgot to raise one turret; fixed

[Tanthalas]

Might want to fix this part

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 45,771 shp / 34,145 Kw = 24.00 kts
   Range 12nm at 24.00 kts
   Bunker at max displacement = 193 tons (100% coal)

[Logi]

It was fixed ;)

[Tanthalas]

It was fixed ;)

just one other problem then, you dont have all centerline Superfireing Tripples tech (the next BB tech above the one you have)

realy a decent ship though man.

[Logi]

just one other problem then, you dont have all centerline Superfireing Tripples tech (the next BB tech above the one you have)

On the contrary, I do have it as of the CSA tech trade. (Which was completed 1914 or 1915 can't remember as of now)

[Borys]

I like the last 4x2x14" design. The armour although thinnish now borders on the acceptable :)
As the barbettes are round, and thus you have to be very unlucky to be hit straight on, I'd venture the suggestion of trimming barbettes down to 11", and putting that inch on the turret face.
"Other gunhouse" can be kept at 2/3rds of turret face.

The 3x3x13" design is IMO too weak - or you're using the wrong guns.
I'd recommend using these:
http://www.navweaps.com/Weapons/WNIT_126-44_m1934.htm

as the gun you're using is marginally more powerful than the last 12":
http://www.navweaps.com/Weapons/WNRussian_12-52_m1907.htm

Borys

[Logi]

3x3x13" design - enhanced firepower through the usage of "superheavy" shells (1200lb as opposed to the normal 1098lb)

BB12 Project, RRC Battleship laid down 1915 (Engine 1912)

Displacement:
   21,379 t light; 22,499 t standard; 24,244 t normal; 25,639 t full load

Dimensions: Length overall / water x beam x draught
   635.00 ft / 625.00 ft x 79.60 ft x 26.00 ft (normal load)
   193.55 m / 190.50 m x 24.26 m  x 7.92 m

Armament:
      9 - 13.00" / 330 mm guns (3x3 guns), 1,200.00lbs / 544.31kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward, 1 raised mount - superfiring
      16 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1915 Model
     Quick firing guns in casemate mounts
     on side, all amidships
   Weight of broadside 11,312 lbs / 5,131 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   330.00 ft / 100.58 m   14.00 ft / 4.27 m
   Ends:   4.00" / 102 mm   295.00 ft / 89.92 m   23.00 ft / 7.01 m
   Upper:   6.00" / 152 mm   330.00 ft / 100.58 m   9.00 ft / 2.74 m
     Main Belt covers 81 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.0" / 330 mm   8.00" / 203 mm      12.0" / 305 mm
   2nd:   3.00" / 76 mm   2.00" / 51 mm      2.00" / 51 mm

   - Armour deck: 2.50" / 64 mm, Conning tower: 8.00" / 203 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 50,154 shp / 37,415 Kw = 24.00 kts
   Range 6,067nm at 12.00 kts
   Bunker at max displacement = 3,140 tons (100% coal)

Complement:
   970 - 1,262

Cost:
   £3.124 million / $12.498 million

Distribution of weights at normal displacement:
   Armament: 1,300 tons, 5.4 %
   Armour: 8,388 tons, 34.6 %
      - Belts: 4,280 tons, 17.7 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 2,192 tons, 9.0 %
      - Armour Deck: 1,772 tons, 7.3 %
      - Conning Tower: 144 tons, 0.6 %
   Machinery: 2,200 tons, 9.1 %
   Hull, fittings & equipment: 9,191 tons, 37.9 %
   Fuel, ammunition & stores: 2,865 tons, 11.8 %
   Miscellaneous weights: 300 tons, 1.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     32,965 lbs / 14,953 Kg = 30.0 x 13.0 " / 330 mm shells or 3.2 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 4.2 ft / 1.3 m
   Roll period: 16.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.91
   Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.656
   Length to Beam Ratio: 7.85 : 1
   'Natural speed' for length: 25.00 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 41
   Bow angle (Positive = bow angles forward): 19.30 degrees
   Stern overhang: 3.00 ft / 0.91 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      20.00 ft / 6.10 m
      - Forecastle (25 %):   20.00 ft / 6.10 m
      - Mid (50 %):      19.00 ft / 5.79 m
      - Quarterdeck (15 %):   19.00 ft / 5.79 m
      - Stern:      19.00 ft / 5.79 m
      - Average freeboard:   19.38 ft / 5.91 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 71.7 %
      - Above water (accommodation/working, high = better): 144.5 %
   Waterplane Area: 38,321 Square feet or 3,560 Square metres
   Displacement factor (Displacement / loading): 103 %
   Structure weight / hull surface area: 168 lbs/sq ft or 819 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.25
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Good seaboat, rides out heavy weather easily

Modified Haze class Battleship
Took Borys's advice on armour reduction, used some of extra displacement on "superheavy" shells (1500lbs as opposed to 1372lbs)

Bo-Wu, RRC Haze Class laid down 1915 (Engine 1912)

Displacement:
   27,025 t light; 28,366 t standard; 30,741 t normal; 32,642 t full load

Dimensions: Length overall / water x beam x draught
   721.00 ft / 721.00 ft x 94.90 ft x 25.00 ft (normal load)
   219.76 m / 219.76 m x 28.93 m  x 7.62 m

Armament:
      4 - 14.00" / 356 mm guns (2x2 guns), 1,500.00lbs / 680.39kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      4 - 14.00" / 356 mm guns (2x2 guns), 1,500.00lbs / 680.39kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all amidships
      16 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1915 Model
     Quick firing guns in casemate mounts
     on side, evenly spread
   Weight of broadside 12,512 lbs / 5,675 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   425.00 ft / 129.54 m   23.00 ft / 7.01 m
   Ends:   Unarmoured
     Main Belt covers 91 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   370.00 ft / 112.78 m   25.00 ft / 7.62 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.0" / 330 mm   8.00" / 203 mm      11.0" / 279 mm
   2nd:   13.0" / 330 mm   8.00" / 203 mm      11.0" / 279 mm
   3rd:   3.00" / 76 mm   2.00" / 51 mm      2.00" / 51 mm

   - Armour deck: 3.00" / 76 mm, Conning tower: 5.00" / 127 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 56,151 shp / 41,888 Kw = 24.00 kts
   Range 7,000nm at 12.00 kts
   Bunker at max displacement = 4,276 tons (100% coal)

Complement:
   1,160 - 1,509

Cost:
   £3.632 million / $14.527 million

Distribution of weights at normal displacement:
   Armament: 1,436 tons, 4.7 %
   Armour: 10,973 tons, 35.7 %
      - Belts: 5,144 tons, 16.7 %
      - Torpedo bulkhead: 685 tons, 2.2 %
      - Armament: 2,185 tons, 7.1 %
      - Armour Deck: 2,853 tons, 9.3 %
      - Conning Tower: 106 tons, 0.3 %
   Machinery: 2,463 tons, 8.0 %
   Hull, fittings & equipment: 11,854 tons, 38.6 %
   Fuel, ammunition & stores: 3,716 tons, 12.1 %
   Miscellaneous weights: 300 tons, 1.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     47,401 lbs / 21,501 Kg = 34.5 x 14.0 " / 356 mm shells or 7.9 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 5.6 ft / 1.7 m
   Roll period: 16.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 87 %
         - Recoil effect (Restricted arc if above 1.00): 0.62
   Seaboat quality  (Average = 1.00): 1.24

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.629
   Length to Beam Ratio: 7.60 : 1
   'Natural speed' for length: 26.85 kts
   Power going to wave formation at top speed: 43 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   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:      18.00 ft / 5.49 m
      - Forecastle (20 %):   18.00 ft / 5.49 m
      - Mid (50 %):      18.00 ft / 5.49 m
      - Quarterdeck (15 %):   18.00 ft / 5.49 m
      - Stern:      18.00 ft / 5.49 m
      - Average freeboard:   18.00 ft / 5.49 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 79.9 %
      - Above water (accommodation/working, high = better): 152.0 %
   Waterplane Area: 51,412 Square feet or 4,776 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 176 lbs/sq ft or 858 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.02
      - Longitudinal: 0.99
      - 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

[P3D]

"Superheavy" is 1650lbs not 1500.

http://www.navweaps.com/Weapons/WNRussian_14-52_mk6.htm

[Logi]

Modified "Superheavy" shell weight

Bo-Wu, RRC Haze Class laid down 1915 (Engine 1912)

Displacement:
   27,128 t light; 28,505 t standard; 30,888 t normal; 32,795 t full load

Dimensions: Length overall / water x beam x draught
   721.00 ft / 721.00 ft x 94.90 ft x 25.00 ft (normal load)
   219.76 m / 219.76 m x 28.93 m  x 7.62 m

Armament:
      4 - 14.00" / 356 mm guns (2x2 guns), 1,650.00lbs / 748.43kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      4 - 14.00" / 356 mm guns (2x2 guns), 1,500.00lbs / 680.39kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all amidships
      16 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1915 Model
     Quick firing guns in casemate mounts
     on side, evenly spread
   Weight of broadside 13,112 lbs / 5,948 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   425.00 ft / 129.54 m   23.00 ft / 7.01 m
   Ends:   Unarmoured
     Main Belt covers 91 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   370.00 ft / 112.78 m   25.00 ft / 7.62 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.0" / 330 mm   8.00" / 203 mm      11.0" / 279 mm
   2nd:   13.0" / 330 mm   8.00" / 203 mm      11.0" / 279 mm
   3rd:   3.00" / 76 mm   2.00" / 51 mm      2.00" / 51 mm

   - Armour deck: 3.00" / 76 mm, Conning tower: 5.00" / 127 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 56,374 shp / 42,055 Kw = 24.00 kts
   Range 7,000nm at 12.00 kts
   Bunker at max displacement = 4,290 tons (100% coal)

Complement:
   1,164 - 1,514

Cost:
   £3.639 million / $14.556 million

Distribution of weights at normal displacement:
   Armament: 1,436 tons, 4.6 %
   Armour: 10,982 tons, 35.6 %
      - Belts: 5,145 tons, 16.7 %
      - Torpedo bulkhead: 685 tons, 2.2 %
      - Armament: 2,185 tons, 7.1 %
      - Armour Deck: 2,861 tons, 9.3 %
      - Conning Tower: 106 tons, 0.3 %
   Machinery: 2,473 tons, 8.0 %
   Hull, fittings & equipment: 11,937 tons, 38.6 %
   Fuel, ammunition & stores: 3,760 tons, 12.2 %
   Miscellaneous weights: 300 tons, 1.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     50,017 lbs / 22,687 Kg = 36.5 x 14.0 " / 356 mm shells or 8.2 torpedoes
   Stability (Unstable if below 1.00): 1.21
   Metacentric height 6.6 ft / 2.0 m
   Roll period: 15.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.52
   Seaboat quality  (Average = 1.00): 1.24

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.632
   Length to Beam Ratio: 7.60 : 1
   'Natural speed' for length: 26.85 kts
   Power going to wave formation at top speed: 43 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   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:      18.00 ft / 5.49 m
      - Forecastle (20 %):   18.00 ft / 5.49 m
      - Mid (50 %):      18.00 ft / 5.49 m
      - Quarterdeck (15 %):   18.00 ft / 5.49 m
      - Stern:      18.00 ft / 5.49 m
      - Average freeboard:   18.00 ft / 5.49 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 79.8 %
      - Above water (accommodation/working, high = better): 151.9 %
   Waterplane Area: 51,554 Square feet or 4,790 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 177 lbs/sq ft or 862 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.01
      - Longitudinal: 0.99
      - 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

[Logi]

Fast Battleship Design - Design designated BB13 Project

BB13 Project, RRC Fast Battleship laid down 1915 (Engine 1912)

Displacement:
   23,793 t light; 24,962 t standard; 26,837 t normal; 28,337 t full load

Dimensions: Length overall / water x beam x draught
   721.00 ft / 707.00 ft x 91.20 ft x 25.00 ft (normal load)
   219.76 m / 215.49 m x 27.80 m  x 7.62 m

Armament:
      6 - 14.00" / 356 mm guns (3 mounts), 1,650.00lbs / 748.43kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward, 1 raised gun
      8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1915 Model
     Quick firing guns in deck mounts with hoists
     on side, all amidships
      12 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1915 Model
     Quick firing guns in casemate mounts
     on side, evenly spread
      8 - 0.50" / 12.7 mm guns (4x2 guns), 0.06lbs / 0.03kg shells, 1915 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 11,149 lbs / 5,057 kg
   Shells per gun, main battery: 100
   6 - 21.0" / 533.4 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.0" / 330 mm   390.00 ft / 118.87 m   10.00 ft / 3.05 m
   Ends:   4.00" / 102 mm   317.00 ft / 96.62 m   20.00 ft / 6.10 m
   Upper:   6.00" / 152 mm   390.00 ft / 118.87 m   10.00 ft / 3.05 m
     Main Belt covers 85 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12.0" / 305 mm   6.00" / 152 mm      11.0" / 279 mm
   2nd:   3.00" / 76 mm   1.00" / 25 mm      1.00" / 25 mm
   3rd:   2.00" / 51 mm   1.00" / 25 mm      1.00" / 25 mm

   - Armour deck: 2.50" / 64 mm, Conning tower: 6.00" / 152 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 79,671 shp / 59,435 Kw = 27.00 kts
   Range 6,000nm at 12.00 kts
   Bunker at max displacement = 3,374 tons (100% coal)

Complement:
   1,047 - 1,362

Cost:
   £3.371 million / $13.483 million

Distribution of weights at normal displacement:
   Armament: 1,185 tons, 4.4 %
   Armour: 8,078 tons, 30.1 %
      - Belts: 4,216 tons, 15.7 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 1,600 tons, 6.0 %
      - Armour Deck: 2,146 tons, 8.0 %
      - Conning Tower: 116 tons, 0.4 %
   Machinery: 3,494 tons, 13.0 %
   Hull, fittings & equipment: 10,735 tons, 40.0 %
   Fuel, ammunition & stores: 3,044 tons, 11.3 %
   Miscellaneous weights: 300 tons, 1.1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     32,722 lbs / 14,843 Kg = 23.8 x 14.0 " / 356 mm shells or 3.3 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 5.2 ft / 1.6 m
   Roll period: 16.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.60
   Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.583
   Length to Beam Ratio: 7.75 : 1
   'Natural speed' for length: 26.59 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   Bow angle (Positive = bow angles forward): 26.50 degrees
   Stern overhang: 5.03 ft / 1.53 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18.00 ft / 5.49 m
      - Forecastle (20 %):   18.00 ft / 5.49 m
      - Mid (50 %):      18.00 ft / 5.49 m
      - Quarterdeck (15 %):   18.00 ft / 5.49 m
      - Stern:      18.00 ft / 5.49 m
      - Average freeboard:   18.00 ft / 5.49 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 80.6 %
      - Above water (accommodation/working, high = better): 151.9 %
   Waterplane Area: 46,401 Square feet or 4,311 Square metres
   Displacement factor (Displacement / loading): 108 %
   Structure weight / hull surface area: 172 lbs/sq ft or 842 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.04
      - Longitudinal: 0.98
      - 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