Design Request

[miketr]

There's a proper tin clad.  :)

Ty!

Michael

[miketr]

Here is the post that the RN design went into.  I will be working on the chapter for the German design shortly.

Leopard "Super Tiger" Battle Cruiser

Yard   Name   LD   Launch   Comp.
Armstrong Whitworth, High Walker #3   HMS Leopard   8-Sep-14   19-Nov-15   26-Sep-16
Fairfield, Govan   HMS Cougar   12-Sep-14   21-Oct-15   8-May-16




4x2 15", 16x1 6" and four 21" torpedo tubes

704' oa (680' pp) x 96' x 29', Displacing 31,350 tons

30 knots 108.000 SHP

11″ belts and 11″ barbettes with 10″ turrets

6" Upper belt, 4" end belt and three armored decks 2.5" to 4"



Drawing (I am not the artist)

https://www.deviantart.com/tzoli/art/The-Super-Tiger-682427115



When Fisher first returned to the Admiralty to looked around for any design that was available. Sir Eustace Tennyson d'Eyncourt Director of Naval Construction for the Royal Navy had prepared a design for an improved Tiger Class battle cruiser, known as Study – Y. The design was intended as a BC companion to the Revenge class battleships. The design was rejected based upon speculation that the ships under water protection was inadequate. Fisher at once approved the design and ordered two examples.







The next move Fisher made was to get more battleships to face the German threat. Additional orders were placed for Revenge class battleships. Bringing in the Wallsend yard which hadn't produced a warships and Scotts at Greenock which had last built a battleship with HMS Ajax.



Yard   Name   LD   Launch   Comp.
Scotts Shipbuilding, Greenock   Resistance   18-Sep-14   30-Aug-15   11-Jan-17
Swan Hunter, Wallsend   Russel   4-Oct-14   26-Oct-15   16-Mar-17
HM Dockyard, Devonport   Restoration   24-Nov-14   4-Jan-16   8-Apr-17




Battleships being built for the export market that had been halted were ordered resumed. The ex-Almirante Cochrane being launched cleared a building slip for additional construction.



Yard   Name   LD   Launch   Comp.
Armstrong Whitworth, High Walker #1   Almirante Cochrane / HMS Hindustan   20-Feb-13   18-Nov-14   14-Jun-16
Vickers, Barrow-in-Furness #2   Fatih Sultan Mehmed / HMS Hibernia   11-Jun-14   23-Aug-15   22-Nov-16










Renown Class Battle Cruiser



Yard   Name   
LD

Launch

Comp.

John Brown, Clydebank #1   HMS Renown   
7-Nov-14

21-Oct-15

31-May-16

Harland and Wolff, Belfast #2   HMS Glorious   
20-Nov-14

30-Sep-15

22-Jun-16

Armstrong Whitworth, High Walker #1   HMS Courageous   
25-Nov-14

15-Nov-15

10-May-16

John Brown, Clydebank #2   HMS Repulse   
25-Nov-14

8-Nov-15

18-Jun-16





3x2 15", 5x3+2x1 4" and two 21" torpedo tubes

794' oa x 90' x 27', Displacing 27,200 tons

32 knots 112,000 SHP

6″ belts and 7″ barbettes with 9″ turrets

1.5" Upper belt, 4" end belt and three armored decks 2.5"



With the Battle Cruiser losses from the Battle of Straits of Otranto on August 5th, 1914 and Battle of Dogger Bank on August 8th, 1914 the Royal Navy had lost seven battle cruisers. So naturally Fisher was not satisfied with just the two Leopard class ships. The Lord High Admiral had very specific ideas on what made a good warship. To Fisher speed was everything as it allowed a commander tactical options in combat. The result was in many ways a throw back to Fisher's first Battle Cruisers the Invincible class laid down in 1906. The Renown class were very long ships with more powerful machinery than any previous British Battle cruiser. This was at the cost of armor no better than those ships from nearly 10 years in the past. This combined with a return to the light 4" quick firing secondaries that had grown out of favor but Fisher ordered a return to.











Incomparable Class Super Battle Cruiser







Yard   Name   LD   Launch   Comp.
Harland and Wolff, Belfast #1   Incomparable (I class S-BC)   8-Jan-15   25-Jan-16   6-Mar-17
Cammell Laird, Birkenhead   Invincible II (I class S-BC)   16-Feb-15   25-Jan-16   12-Apr-17




3x2 18" L40, 8x3 4" and two 21" torpedo tubes

860' x 110' x 32', Displacing 46,100 tons

33 knots 240,000 SHP

9″ belts and 9″ barbettes with 10″ turrets

No Upper belt, 3" end belt and armored decks with a total thickness of 3"







As German raiders ran free in the Atlantic Fisher wasn't content. Especially as information on the size and gun power on the German ships had become clear something new was required. The result was the largest British warship yet. The intention was to build a warship with more powerful guns than the Germans and able to run them down. There was a desire for 35 knots but it wasn't practical and so Fisher had to settle for 33 knots. While having a thicker belt than the Renown class the Incomparable had huge sections of hull with no armor protection at all. With Fisher pushing for speed in completing the ships meant that large tube boilers with their matching large space foot print were used again. Incomparable made use of boiler rooms stacked on top of each other to provide the massive power required to reach 33" knots. This combined the lack of an upper belt meant that 50% of the ships power had no armor protection.











Admiral Class Battleship







Yard   Name   LD   Launch   Comp.
Palmers Shipbuilding, Jarrow   HMS Anson   21-Jan-15   11-Feb-16   10-Dec-16
Armstrong Whitworth, High Walker #2   HMS Hood   28-Mar-15   5-Feb-16   28-Oct-16
HM Dockyard, Portsmouth   HMS Howe   6-May-15   16-Jul-16   18-Jul-17
Vickers, Barrow-in-Furness #1   HMS Rodney   5-Jun-15   30-May-16   26-Jul-17




4x2 15", 8x3 4" and two 21" torpedo tubes

830' x 104' x 26', Displacing 38,300 tons

32 knots 160.000 SHP

8″ sloped belts and 9″ barbettes with 10″ turrets

5" Upper belt, 4" end belt and three armored decks with a total thickness of 3.5"





The last of Fisher's capital ship designs was the Admiral Class. They were designed as battleships as a political fiction to deal with complaints by Cabinet.  By October 1914 the British were starting to get a good idea as to the details on the new German ships. Additional battleships were clearly in the need. At same time Fisher was determined to push capital ships speed even higher. Some of the worst elements of the Incomparable Class were fixed by use of small tube boilers and a smaller powerplant to shrink the boiler rooms to be below the armor deck.  Still many in the Royal Navy viewed the design as a tin clad and horribly under protected.  Also worry on if the 18" guns would be available caused a switch back to 15" guns.

[miketr]

Another request for a design.

Looking for a unification of the German BB and BC types.

Belt 320 to 350mm, 300mm ends, 250 upper, 60mm for / aft deck and 80mm midship.
Turret 350 x 150 w/ 350mm Barbette

Main guns 420mm in 4x2, 150mm secondary and 88mm AA.

Speed 28 to 32 knots (30 knots preferred). 
34m is max width.     

[Jefgte]

Based on the Imperator class SS of 1916 (Byzantine QE class) Here is HMS Leopard Super Tiger.
This type of BC is not suitable for Byzantium because it is too weakly armored for the on-board artillery.

Imperator class, Byzantine Empire Super Tiger version laid down 1916

Displacement:
   31 350 t light; 32 922 t standard; 34 281 t normal; 35 368 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (705,00 ft / 680,00 ft) x 96,00 ft x (30,33 / 31,12 ft)
   (214,88 m / 207,26 m) x 29,26 m  x (9,24 / 9,49 m)

Armament:
      4 - 15,00" / 381 mm 42,0 cal guns - 1 636,38lbs / 742,25kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1916 Model
     2 x Twin mounts on centreline, forward evenly spread
      1 raised mount
      4 - 15,00" / 381 mm 42,0 cal guns - 1 636,38lbs / 742,25kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1916 Model
     2 x Twin mounts on centreline, aft evenly spread
      1 raised mount
      16 - 6,00" / 152 mm 45,0 cal guns - 108,92lbs / 49,41kg shells, 150 per gun
     Quick firing guns in casemate mounts, 1916 Model
     16 x Single mounts on sides, evenly spread
      4 - 4,00" / 102 mm 45,0 cal guns - 32,27lbs / 14,64kg shells, 200 per gun
     Breech loading guns in deck mounts, 1916 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      4 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 2 000 per gun
     Quick firing guns in deck mounts, 1916 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 14 963 lbs / 6 787 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11,0" / 279 mm   440,00 ft / 134,11 m   10,00 ft / 3,05 m
   Ends:   4,00" / 102 mm   240,00 ft / 73,15 m   10,00 ft / 3,05 m
   Upper:   5,50" / 140 mm   440,00 ft / 134,11 m   14,00 ft / 4,27 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   10,0" / 254 mm   6,00" / 152 mm      11,0" / 279 mm
   2nd:   10,0" / 254 mm   6,00" / 152 mm      11,0" / 279 mm
   3rd:   3,00" / 76 mm   3,00" / 76 mm      3,00" / 76 mm
   4th:   1,57" / 40 mm         -               -
   5th:   0,50" / 13 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 4,00" / 102 mm
   Forecastle: 1,57" / 40 mm  Quarter deck: 1,57" / 40 mm

   - Conning towers: Forward 11,00" / 279 mm, Aft 4,00" / 102 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 145 024 shp / 108 188 Kw = 30,00 kts
   Range 6 000nm at 12,00 kts
   Bunker at max displacement = 2 446 tons

Complement:
   1 259 - 1 637

Cost:
   £5,042 million / $20,170 million

Distribution of weights at normal displacement:
   Armament: 2 345 tons, 6,8 %
      - Guns: 2 345 tons, 6,8 %
   Armour: 10 123 tons, 29,5 %
      - Belts: 3 904 tons, 11,4 %
      - Armament: 2 749 tons, 8,0 %
      - Armour Deck: 3 129 tons, 9,1 %
      - Conning Towers: 341 tons, 1,0 %
   Machinery: 5 403 tons, 15,8 %
   Hull, fittings & equipment: 12 844 tons, 37,5 %
   Fuel, ammunition & stores: 2 931 tons, 8,6 %
   Miscellaneous weights: 635 tons, 1,9 %
      - Hull below water: 174 tons
      - Hull above water: 100 tons
      - On freeboard deck: 100 tons
      - Above deck: 261 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     40 398 lbs / 18 324 Kg = 23,9 x 15,0 " / 381 mm shells or 3,3 torpedoes
   Stability (Unstable if below 1.00): 1,10
   Metacentric height 5,6 ft / 1,7 m
   Roll period: 17,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0,77
   Seaboat quality  (Average = 1.00): 1,01

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,606 / 0,609
   Length to Beam Ratio: 7,08 : 1
   'Natural speed' for length: 26,08 kts
   Power going to wave formation at top speed: 58 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 38,00 degrees
   Stern overhang: -10,00 ft / -3,05 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20,00 %,  32,00 ft / 9,75 m,  26,00 ft / 7,92 m
      - Forward deck:   30,00 %,  26,00 ft / 7,92 m,  22,00 ft / 6,71 m
      - Aft deck:   32,50 %,  22,00 ft / 6,71 m,  22,00 ft / 6,71 m
      - Quarter deck:   17,50 %,  22,00 ft / 6,71 m,  22,00 ft / 6,71 m
      - Average freeboard:      23,88 ft / 7,28 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 85,1 %
      - Above water (accommodation/working, high = better): 166,8 %
   Waterplane Area: 48 013 Square feet or 4 461 Square metres
   Displacement factor (Displacement / loading): 103 %
   Structure weight / hull surface area: 198 lbs/sq ft or 968 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,93
      - Longitudinal: 1,77
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room

Misc weight:
25t for Marconi
236t for top fire control
100t for Admiral staff
100t reserved
150t for additionnal pumps installation
24t for 4 sub TT x 21" with 4 reloads

[miketr]

Here is an attempt to draw out the BB Rock Doctor was king enough to provide.  The top was the master image I used as a base from Shipbucket.com and the bottom is my alterations.



Michael

[miketr]

Took my own crack at at fast BB.

GK5201, Germany Fast Battleship laid down 1920

Displacement:
   48,862 t light; 51,003 t standard; 55,032 t normal; 58,255 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (888.12 ft / 885.83 ft) x 109.91 ft x (32.81 / 34.39 ft)
   (270.70 m / 270.00 m) x 33.50 m  x (10.00 / 10.48 m)

Armament:
      8 - 16.54" / 420 mm 45.0 cal guns - 2,279.83lbs / 1,034.12kg shells, 90 per gun
     Breech loading guns in turret on barbette mounts, 1920 Model
     4 x Twin mounts on centreline ends, evenly spread
      1 raised mount - superfiring
      12 - 5.91" / 150 mm 45.0 cal guns - 103.86lbs / 47.11kg shells, 150 per gun
     Breech loading guns in casemate mounts, 1920 Model
     12 x Single mounts on sides, evenly spread
      8 - 4.13" / 105 mm 45.0 cal guns - 35.62lbs / 16.16kg shells, 150 per gun
     Anti-air guns in deck mounts, 1920 Model
     8 x Single mounts on sides, evenly spread
      Weight of broadside 19,770 lbs / 8,967 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.8" / 350 mm   446.19 ft / 136.00 m   12.57 ft / 3.83 m
   Ends:   11.8" / 300 mm   439.63 ft / 134.00 m   12.57 ft / 3.83 m
   Upper:   9.84" / 250 mm   446.19 ft / 136.00 m   8.01 ft / 2.44 m
     Main Belt covers 77 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      3.94" / 100 mm   575.79 ft / 175.50 m   27.85 ft / 8.49 m
   Beam between torpedo bulkheads 100.07 ft / 30.50 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.8" / 350 mm   5.91" / 150 mm      13.8" / 350 mm
   2nd:   6.69" / 170 mm         -         6.69" / 170 mm
   3rd:   0.98" / 25 mm   0.98" / 25 mm            -

   - Armoured deck - multiple decks:
   For and Aft decks: 3.94" / 100 mm
   Forecastle: 3.15" / 80 mm  Quarter deck: 3.94" / 100 mm

   - Conning towers: Forward 15.75" / 400 mm, Aft 0.00" / 0 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 180,002 shp / 134,281 Kw = 30.31 kts
   Range 13,150nm at 12.00 kts
   Bunker at max displacement = 7,252 tons (60% coal)

Complement:
   1,796 - 2,335

Cost:
   £10.434 million / $41.737 million

Distribution of weights at normal displacement:
   Armament: 3,159 tons, 5.7 %
      - Guns: 3,159 tons, 5.7 %
   Armour: 18,708 tons, 34.0 %
      - Belts: 7,424 tons, 13.5 %
      - Torpedo bulkhead: 2,336 tons, 4.2 %
      - Armament: 3,306 tons, 6.0 %
      - Armour Deck: 5,150 tons, 9.4 %
      - Conning Tower: 491 tons, 0.9 %
   Machinery: 6,657 tons, 12.1 %
   Hull, fittings & equipment: 20,239 tons, 36.8 %
   Fuel, ammunition & stores: 6,169 tons, 11.2 %
   Miscellaneous weights: 100 tons, 0.2 %
      - Hull below water: 100 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     75,794 lbs / 34,379 Kg = 33.5 x 16.5 " / 420 mm shells or 12.6 torpedoes
   Stability (Unstable if below 1.00): 1.08
   Metacentric height 6.6 ft / 2.0 m
   Roll period: 17.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.64
   Seaboat quality  (Average = 1.00): 1.05

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.603 / 0.609
   Length to Beam Ratio: 8.06 : 1
   'Natural speed' for length: 29.76 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 68
   Bow angle (Positive = bow angles forward): 5.00 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 %,  26.25 ft / 8.00 m,  26.25 ft / 8.00 m
      - Forward deck:   40.00 %,  26.25 ft / 8.00 m,  26.25 ft / 8.00 m
      - Aft deck:   25.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Quarter deck:   15.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      22.31 ft / 6.80 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): 170.1 %
   Waterplane Area: 71,407 Square feet or 6,634 Square metres
   Displacement factor (Displacement / loading): 112 %
   Structure weight / hull surface area: 218 lbs/sq ft or 1,063 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.10
      - Longitudinal: 0.98
      - Overall: 1.01
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

[The Rock Doctor]

It looks like increasing your freeboard a bit would actually help your hull strength, which could be used to increase the protection somewhere.

[miketr]

GK5302, Germany Fast Battleship laid down 1920

Displacement:
   50,206 t light; 52,391 t standard; 55,032 t normal; 57,144 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (889.41 ft / 885.83 ft) x 109.91 ft x (32.81 / 33.84 ft)
   (271.09 m / 270.00 m) x 33.50 m  x (10.00 / 10.32 m)

Armament:
      8 - 16.54" / 420 mm 50.0 cal guns - 2,393.12lbs / 1,085.50kg shells, 90 per gun
     Breech loading guns in turret on barbette mounts, 1920 Model
     4 x Twin mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      12 - 5.91" / 150 mm 45.0 cal guns - 103.86lbs / 47.11kg shells, 150 per gun
     Breech loading guns in casemate mounts, 1920 Model
     12 x Single mounts on sides, evenly spread
      8 - 4.13" / 105 mm 45.0 cal guns - 35.63lbs / 16.16kg shells, 150 per gun
     Anti-air guns in deck mounts, 1920 Model
     8 x Single mounts on sides, evenly spread
      Weight of broadside 20,676 lbs / 9,379 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.8" / 350 mm   452.76 ft / 138.00 m   12.57 ft / 3.83 m
   Ends:   11.8" / 300 mm   433.07 ft / 132.00 m   12.57 ft / 3.83 m
   Upper:   9.84" / 250 mm   452.76 ft / 138.00 m   8.01 ft / 2.44 m
     Main Belt covers 79 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      3.94" / 100 mm   575.79 ft / 175.50 m   27.85 ft / 8.49 m
   Beam between torpedo bulkheads 100.07 ft / 30.50 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.8" / 350 mm   5.91" / 150 mm      13.8" / 350 mm
   2nd:   6.69" / 170 mm         -         6.69" / 170 mm
   3rd:   0.98" / 25 mm   0.98" / 25 mm            -

   - Armoured deck - multiple decks:
   For and Aft decks: 4.33" / 110 mm
   Forecastle: 3.94" / 100 mm  Quarter deck: 3.94" / 100 mm

   - Conning towers: Forward 15.75" / 400 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 180,002 shp / 134,281 Kw = 30.31 kts
   Range 10,000nm at 12.00 kts
   Bunker at max displacement = 4,753 tons

Complement:
   1,796 - 2,335

Cost:
   £11.094 million / $44.374 million

Distribution of weights at normal displacement:
   Armament: 3,645 tons, 6.6 %
      - Guns: 3,645 tons, 6.6 %
   Armour: 19,992 tons, 36.3 %
      - Belts: 7,445 tons, 13.5 %
      - Torpedo bulkhead: 2,336 tons, 4.2 %
      - Armament: 4,050 tons, 7.4 %
      - Armour Deck: 5,670 tons, 10.3 %
      - Conning Tower: 491 tons, 0.9 %
   Machinery: 6,294 tons, 11.4 %
   Hull, fittings & equipment: 20,175 tons, 36.7 %
   Fuel, ammunition & stores: 4,826 tons, 8.8 %
   Miscellaneous weights: 100 tons, 0.2 %
      - Hull below water: 100 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     77,167 lbs / 35,003 Kg = 34.1 x 16.5 " / 420 mm shells or 12.3 torpedoes
   Stability (Unstable if below 1.00): 1.03
   Metacentric height 6.1 ft / 1.9 m
   Roll period: 18.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.87
   Seaboat quality  (Average = 1.00): 1.13

Hull form characteristics:
   Hull has low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.603 / 0.607
   Length to Beam Ratio: 8.06 : 1
   'Natural speed' for length: 29.76 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 62
   Bow angle (Positive = bow angles forward): 7.50 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 %,  27.23 ft / 8.30 m,  26.25 ft / 8.00 m
      - Forward deck:   40.00 %,  26.25 ft / 8.00 m,  26.25 ft / 8.00 m
      - Aft deck:   25.00 %,  26.25 ft / 8.00 m,  26.25 ft / 8.00 m
      - Quarter deck:   15.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      24.85 ft / 7.57 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): 198.8 %
   Waterplane Area: 71,407 Square feet or 6,634 Square metres
   Displacement factor (Displacement / loading): 105 %
   Structure weight / hull surface area: 214 lbs/sq ft or 1,046 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.99
      - Longitudinal: 1.02
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

[miketr]

I may make some changes for the placement of the aft 150mm, moving them all more aft.  Also thinking may add more. 



Michael

[miketr]

I am trying to create a 1918 South Dakota and keep getting 'failure' capsize.  Dont know what to do with such.  I just about removed the turrets to remove top weight and still has the alert.

Any thoughts on what I am doing wrong?

BB-1917, United States Battleship laid down 1920
DESIGN FAILURE: Ship will capsize

Displacement:
   42,494 t light; 44,294 t standard; 45,911 t normal; 47,204 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (703.36 ft / 700.00 ft) x 108.00 ft x (32.50 / 33.28 ft)
   (214.38 m / 213.36 m) x 32.92 m  x (9.91 / 10.14 m)

Armament:
      4 - 16.00" / 406 mm 50.0 cal guns - 2,168.09lbs / 983.43kg shells, 150 per gun
     Breech loading guns in turret on barbette mounts, 1920 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      12 - 6.00" / 152 mm 53.0 cal guns - 115.76lbs / 52.51kg shells, 150 per gun
     Breech loading guns in casemate mounts, 1920 Model
     12 x Single mounts layout not set
      4 raised mounts
      4 - 6.00" / 152 mm 53.0 cal guns - 115.76lbs / 52.51kg shells, 150 per gun
     Breech loading guns in deck and hoist mounts, 1920 Model
     4 x Single mounts layout not set
      4 raised mounts
      4 - 3.00" / 76.2 mm 50.0 cal guns - 14.29lbs / 6.48kg shells, 150 per gun
     Breech loading guns in deck and hoist mounts, 1920 Model
     4 x Single mounts layout not set
      4 raised mounts
      Weight of broadside 10,582 lbs / 4,800 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.5" / 343 mm   455.00 ft / 138.68 m   12.47 ft / 3.80 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.00" / 25 mm   455.00 ft / 138.68 m   31.24 ft / 9.52 m
   Beam between torpedo bulkheads 100.00 ft / 30.48 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   18.0" / 457 mm   10.0" / 254 mm      13.5" / 343 mm
   2nd:   0.50" / 13 mm   0.50" / 13 mm      0.50" / 13 mm
   3rd:   1.00" / 25 mm   1.00" / 25 mm      1.00" / 25 mm
   4th:   1.00" / 25 mm   1.00" / 25 mm      1.00" / 25 mm

   - Armoured deck - multiple decks:
   For and Aft decks: 6.00" / 152 mm
   Forecastle: 4.00" / 102 mm  Quarter deck: 4.00" / 102 mm

   - Conning towers: Forward 16.00" / 406 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 3,670 shp / 2,738 Kw = 10.00 kts
   Range 10,000nm at 10.00 kts
   Bunker at max displacement = 2,910 tons

Complement:
   1,567 - 2,038

Cost:
   £6.000 million / $24.001 million

Distribution of weights at normal displacement:
   Armament: 2,312 tons, 5.0 %
      - Guns: 2,312 tons, 5.0 %
   Armour: 12,951 tons, 28.2 %
      - Belts: 3,356 tons, 7.3 %
      - Torpedo bulkhead: 526 tons, 1.1 %
      - Armament: 2,530 tons, 5.5 %
      - Armour Deck: 6,097 tons, 13.3 %
      - Conning Tower: 442 tons, 1.0 %
   Machinery: 128 tons, 0.3 %
   Hull, fittings & equipment: 27,103 tons, 59.0 %
   Fuel, ammunition & stores: 3,416 tons, 7.4 %
   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 16.0 " / 406 mm shells or 0.0 torpedoes
   Stability (Unstable if below 1.00): 0.00
   Metacentric height -5.6 ft / -1.7 m
   Roll period: NaN seconds
   Steadiness   - As gun platform (Average = 50 %): 0 %
         - Recoil effect (Restricted arc if above 1.00): Infinity
   Seaboat quality  (Average = 1.00): 0.00

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.654 / 0.657
   Length to Beam Ratio: 6.48 : 1
   'Natural speed' for length: 26.46 kts
   Power going to wave formation at top speed: 12 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 7.50 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 %,  25.50 ft / 7.77 m,  25.50 ft / 7.77 m
      - Forward deck:   40.00 %,  25.50 ft / 7.77 m,  25.50 ft / 7.77 m
      - Aft deck:   25.00 %,  17.50 ft / 5.33 m,  17.50 ft / 5.33 m
      - Quarter deck:   15.00 %,  17.50 ft / 5.33 m,  17.50 ft / 5.33 m
      - Average freeboard:      22.30 ft / 6.80 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 25.2 %
      - Above water (accommodation/working, high = better): 158.4 %
   Waterplane Area: 58,127 Square feet or 5,400 Square metres
   Displacement factor (Displacement / loading): 199 %
   Structure weight / hull surface area: 356 lbs/sq ft or 1,737 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.00
      - Longitudinal: 0.00
      - Overall: NaN
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has quick, lively roll, not a steady gun platform
   Caution: Lacks seaworthiness - very limited seakeeping ability

[Desertfox]

Lack of engines, 13% of the weight is in the armor deck and only 0.3% is down low in machinery.

[The Rock Doctor]

What did the Fox say?  Yeah, that.

[TacCovert4]

Yeah.  The metacentric height is really low.  Like submarine low.

[miketr]

I get same error no matter how much engine I put in.  I  have tried 23, 26 and 30 knots. 

[The Rock Doctor]

Secondary battery layout isn't set, which will bugger up some things (though the capsizing part would be new).