Byzantine Empire 1918-1922

[Jefgte]

Project B, Byzantine Empire BB8 laid down 1922

Displacement:
   26 950 t light; 28 632 t standard; 30 372 t normal; 31 763 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (632,05 ft / 629,92 ft) x 104,99 ft x (25,68 / 26,66 ft)
   (192,65 m / 192,00 m) x 32,00 m  x (7,83 / 8,13 m)

Armament:
      9 - 15,00" / 381 mm 45,0 cal guns - 1 920,01lbs / 870,90kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1922 Model
     3 x Triple mounts on centreline ends, majority forward
      1 raised mount - superfiring
      20 - 4,72" / 120 mm 45,0 cal guns - 53,18lbs / 24,12kg shells, 180 per gun
     Quick firing guns in deck and hoist mounts, 1922 Model
     10 x Twin mounts on sides, evenly spread
      4 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 250 per gun
     Anti-air guns in deck mounts, 1922 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      8 - 0,30" / 7,6 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 4 000 per gun
     Machine guns in deck mounts, 1922 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 18 398 lbs / 8 345 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13,4" / 340 mm   413,39 ft / 126,00 m   13,12 ft / 4,00 m
   Ends:   1,97" / 50 mm   216,54 ft / 66,00 m   9,84 ft / 3,00 m
   Upper:   3,54" / 90 mm   413,39 ft / 126,00 m   11,81 ft / 3,60 m
     Main Belt covers 101 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
      1,97" / 50 mm   413,39 ft / 126,00 m   23,95 ft / 7,30 m
   Beam between torpedo bulkheads 104,99 ft / 32,00 m

   - Hull void:
      0,52" / 13 mm     1,70 ft / 0,52 m   5,56 ft / 1,70 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15,0" / 380 mm   4,72" / 120 mm      13,4" / 340 mm
   2nd:   0,79" / 20 mm         -               -
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 3,94" / 100 mm
   Forecastle: 1,57" / 40 mm  Quarter deck: 1,57" / 40 mm

   - Conning towers: Forward 11,81" / 300 mm, Aft 5,91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 36 000 shp / 26 856 Kw = 21,05 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 3 131 tons

Complement:
   1 149 - 1 495

Cost:
   £7,218 million / $28,874 million

Distribution of weights at normal displacement:
   Armament: 2 784 tons, 9,2 %
      - Guns: 2 784 tons, 9,2 %
   Armour: 10 742 tons, 35,4 %
      - Belts: 4 129 tons, 13,6 %
      - Torpedo bulkhead: 721 tons, 2,4 %
      - Void: 0 tons, 0,0 %
      - Armament: 2 302 tons, 7,6 %
      - Armour Deck: 3 218 tons, 10,6 %
      - Conning Towers: 372 tons, 1,2 %
   Machinery: 1 221 tons, 4,0 %
   Hull, fittings & equipment: 11 428 tons, 37,6 %
   Fuel, ammunition & stores: 3 421 tons, 11,3 %
   Miscellaneous weights: 775 tons, 2,6 %
      - Hull below water: 135 tons
      - Hull above water: 135 tons
      - On freeboard deck: 200 tons
      - Above deck: 305 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     49 896 lbs / 22 633 Kg = 29,6 x 15,0 " / 381 mm shells or 9,3 torpedoes
   Stability (Unstable if below 1.00): 1,19
   Metacentric height 7,4 ft / 2,2 m
   Roll period: 16,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 77 %
         - Recoil effect (Restricted arc if above 1.00): 0,68
   Seaboat quality  (Average = 1.00): 1,33

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,626 / 0,631
   Length to Beam Ratio: 6,00 : 1
   'Natural speed' for length: 25,10 kts
   Power going to wave formation at top speed: 42 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   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:   17,50 %,  24,28 ft / 7,40 m,  20,67 ft / 6,30 m
      - Forward deck:   32,00 %,  20,67 ft / 6,30 m,  17,06 ft / 5,20 m
      - Aft deck:   33,00 %,  17,06 ft / 5,20 m,  17,06 ft / 5,20 m
      - Quarter deck:   17,50 %,  17,06 ft / 5,20 m,  17,06 ft / 5,20 m
      - Average freeboard:      18,52 ft / 5,65 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 60,6 %
      - Above water (accommodation/working, high = better): 147,4 %
   Waterplane Area: 49 554 Square feet or 4 604 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 207 lbs/sq ft or 1 011 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,47
      - Overall: 1,00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

280t for 1918  Fire Control
25t for Marconi
135t for additionnal pumps
135t for additionnal ventilatio
200t reserved...

[Jefgte]

Project C, Byzantine Empire BB8 - Pocket Battleship laid down 1922

Displacement:
   18 000 t light; 19 143 t standard; 20 482 t normal; 21 553 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (535,31 ft / 531,50 ft) x 88,58 ft x (23,94 / 24,99 ft)
   (163,16 m / 162,00 m) x 27,00 m  x (7,30 / 7,62 m)

Armament:
      6 - 15,00" / 381 mm 42,0 cal guns - 1 920,01lbs / 870,90kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1922 Model
     2 x Triple mounts on centreline ends, evenly spread
      16 - 4,72" / 120 mm 45,0 cal guns - 53,18lbs / 24,12kg shells, 180 per gun
     Quick firing guns in deck and hoist mounts, 1922 Model
     8 x Twin mounts on centreline, aft deck forward
      4 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 250 per gun
     Anti-air guns in deck mounts, 1922 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      8 - 0,30" / 7,6 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 4 000 per gun
     Machine guns in deck mounts, 1922 Model
     8 x Single mounts on side ends, evenly spread
      4 raised mounts - superfiring
      Weight of broadside 12 426 lbs / 5 636 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13,4" / 340 mm   344,49 ft / 105,00 m   10,50 ft / 3,20 m
   Ends:   1,97" / 50 mm   183,73 ft / 56,00 m   9,84 ft / 3,00 m
     3,28 ft / 1,00 m Unarmoured ends
   Upper:   3,54" / 90 mm   344,49 ft / 105,00 m   9,19 ft / 2,80 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1,57" / 40 mm   344,49 ft / 105,00 m   22,31 ft / 6,80 m
   Beam between torpedo bulkheads 72,18 ft / 22,00 m

   - Hull void:
      0,39" / 10 mm     1,27 ft / 0,39 m   4,17 ft / 1,27 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15,0" / 380 mm   4,72" / 120 mm      13,4" / 340 mm
   2nd:   0,79" / 20 mm         -               -
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 3,35" / 85 mm
   Forecastle: 0,98" / 25 mm  Quarter deck: 0,98" / 25 mm

   - Conning towers: Forward 11,81" / 300 mm, Aft 5,91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 44 000 shp / 32 824 Kw = 23,30 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 2 410 tons

Complement:
   855 - 1 112

Cost:
   £4,848 million / $19,391 million

Distribution of weights at normal displacement:
   Armament: 1 717 tons, 8,4 %
      - Guns: 1 717 tons, 8,4 %
   Armour: 6 671 tons, 32,6 %
      - Belts: 2 778 tons, 13,6 %
      - Torpedo bulkhead: 448 tons, 2,2 %
      - Void: 0 tons, 0,0 %
      - Armament: 1 251 tons, 6,1 %
      - Armour Deck: 1 908 tons, 9,3 %
      - Conning Towers: 286 tons, 1,4 %
   Machinery: 1 493 tons, 7,3 %
   Hull, fittings & equipment: 7 585 tons, 37,0 %
   Fuel, ammunition & stores: 2 482 tons, 12,1 %
   Miscellaneous weights: 535 tons, 2,6 %
      - Hull below water: 90 tons
      - Hull above water: 90 tons
      - On freeboard deck: 158 tons
      - Above deck: 197 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     29 057 lbs / 13 180 Kg = 17,2 x 15,0 " / 381 mm shells or 5,3 torpedoes
   Stability (Unstable if below 1.00): 1,15
   Metacentric height 5,4 ft / 1,6 m
   Roll period: 16,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 73 %
         - Recoil effect (Restricted arc if above 1.00): 0,67
   Seaboat quality  (Average = 1.00): 1,05

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,636 / 0,641
   Length to Beam Ratio: 6,00 : 1
   'Natural speed' for length: 23,05 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   18,00 %,  21,65 ft / 6,60 m,  18,37 ft / 5,60 m
      - Forward deck:   32,00 %,  18,37 ft / 5,60 m,  15,09 ft / 4,60 m
      - Aft deck:   32,00 %,  15,09 ft / 4,60 m,  15,09 ft / 4,60 m
      - Quarter deck:   18,00 %,  15,09 ft / 4,60 m,  15,09 ft / 4,60 m
      - Average freeboard:      16,44 ft / 5,01 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 82,6 %
      - Above water (accommodation/working, high = better): 126,2 %
   Waterplane Area: 35 606 Square feet or 3 308 Square metres
   Displacement factor (Displacement / loading): 107 %
   Structure weight / hull surface area: 175 lbs/sq ft or 855 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,94
      - Longitudinal: 1,62
      - Overall: 1,00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

172t for 1918  Fire Control
25t for Marconi
24t for 6TTx533 HW
90t for additionnal pumps
90t for additionnal ventilation
134t reserved...

[TacCovert4]

Just to ask, you're building full up battleships and pocket ones?  I presume this is more of a coastal bb?  Only thing I don't like is half the main armament is in each turret,  and the split means that you don't get the benefits of shallow angle broadside. 

Otherwise it looks good.  I had considered this for my own crash bb program after ironclad bay.  But opted Otherwise.  Overall I think this could be a concern for the monarch class if it has a numerical advantage.  One on one I think it's still pretty vulnerable even with its heavy armor. 

[The Rock Doctor]

I feel like I'd trade that end belt for more protection on the quarterdeck, since the steering gear is under there somewhere.

Apart from sacrifices to the protection scheme, it's a pretty sturdy design, and certainly a challenge for anything else in its size range.

[TacCovert4]

I will say the decks are kind of thin given how long the range is getting. 

[Jefgte]

These are just SS tests to see what is possible to build with T3x381 and T3x343 in 1922.

Pockets can be a second line of battle (tactical) and hit heavy (870kg shells)
Pockets have the advantage of dividing the opponent's fire.
2x18,000t vs 1x36,000t.
The speed allows you to choose the combat distance (immunity).
The striking force is the same: 12x381 = 10440kg
Survivability is the same: 26360kg

I continue my SS.

[snip]

Remember that all the TDS need to be Additional Damage Containing bulkheads. Strengthend structural is bugged

[Jefgte]

BBX, a 1917 project update in 1922, it's more of a pocket BC

BBX, Byzantine Empire 2T3x343 laid down 1922


Displacement:
   18 235 t light; 19 196 t standard; 20 513 t normal; 21 567 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (570,87 ft / 570,87 ft) x 85,30 ft x (27,51 / 28,61 ft)
   (174,00 m / 174,00 m) x 26,00 m  x (8,38 / 8,72 m)

Armament:
      6 - 13,50" / 343 mm 45,0 cal guns - 1 408,75lbs / 639,00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1922 Model
     2 x Triple mounts on centreline ends, evenly spread
      16 - 4,72" / 120 mm 45,0 cal guns - 53,17lbs / 24,12kg shells, 160 per gun
     Quick firing guns in deck and hoist mounts, 1922 Model
     8 x Twin mounts on sides, evenly spread
      4 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 200 per gun
     Anti-air guns in deck mounts, 1922 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      8 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 4 000 per gun
     Machine guns in deck mounts, 1922 Model
     8 x Single mounts on side ends, evenly spread
      8 raised mounts
      Weight of broadside 9 358 lbs / 4 245 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12,6" / 320 mm   370,73 ft / 113,00 m   10,17 ft / 3,10 m
   Ends:   1,97" / 50 mm   196,85 ft / 60,00 m   9,84 ft / 3,00 m
     3,28 ft / 1,00 m Unarmoured ends
   Upper:   3,54" / 90 mm   370,73 ft / 113,00 m   11,81 ft / 3,60 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1,38" / 35 mm   370,73 ft / 113,00 m   26,25 ft / 8,00 m
   Beam between torpedo bulkheads 65,62 ft / 20,00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13,4" / 340 mm   4,72" / 120 mm      11,8" / 300 mm
   3rd:   1,97" / 50 mm         -               -
   4th:   0,79" / 20 mm         -               -
   5th:   0,39" / 10 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 3,15" / 80 mm
   Forecastle: 0,98" / 25 mm  Quarter deck: 0,98" / 25 mm

   - Conning towers: Forward 11,81" / 300 mm, Aft 5,91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 72 800 shp / 54 308 Kw = 27,05 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 2 370 tons

Complement:
   856 - 1 114

Cost:
   £4,809 million / $19,234 million

Distribution of weights at normal displacement:
   Armament: 1 476 tons, 7,2 %
      - Guns: 1 476 tons, 7,2 %
   Armour: 6 474 tons, 31,6 %
      - Belts: 2 860 tons, 13,9 %
      - Torpedo bulkhead: 496 tons, 2,4 %
      - Armament: 1 121 tons, 5,5 %
      - Armour Deck: 1 711 tons, 8,3 %
      - Conning Towers: 286 tons, 1,4 %
   Machinery: 2 469 tons, 12,0 %
   Hull, fittings & equipment: 7 400 tons, 36,1 %
   Fuel, ammunition & stores: 2 279 tons, 11,1 %
   Miscellaneous weights: 416 tons, 2,0 %
      - Hull below water: 90 tons
      - Hull above water: 90 tons
      - On freeboard deck: 64 tons
      - Above deck: 172 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     26 401 lbs / 11 975 Kg = 21,4 x 13,5 " / 343 mm shells or 4,4 torpedoes
   Stability (Unstable if below 1.00): 1,08
   Metacentric height 4,6 ft / 1,4 m
   Roll period: 16,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,68
   Seaboat quality  (Average = 1.00): 1,06

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,536 / 0,542
   Length to Beam Ratio: 6,69 : 1
   'Natural speed' for length: 23,89 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 66
   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:   17,50 %,  24,28 ft / 7,40 m,  21,00 ft / 6,40 m
      - Forward deck:   32,50 %,  21,00 ft / 6,40 m,  17,72 ft / 5,40 m
      - Aft deck:   32,50 %,  17,72 ft / 5,40 m,  17,72 ft / 5,40 m
      - Quarter deck:   17,50 %,  17,72 ft / 5,40 m,  17,72 ft / 5,40 m
      - Average freeboard:      19,05 ft / 5,81 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 97,7 %
      - Above water (accommodation/working, high = better): 138,4 %
   Waterplane Area: 33 542 Square feet or 3 116 Square metres
   Displacement factor (Displacement / loading): 107 %
   Structure weight / hull surface area: 165 lbs/sq ft or 804 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,93
      - Longitudinal: 1,80
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

147t for 1914  Fire Control
25t for Marconi
90t for additionnal pumps
90t for additionnal ventilation
24t for 6TT x 21'' HW
40t reserved...

[The Rock Doctor]

I like that balance of speed, armament and armor better; it would be annoying to deal with.

[Kaiser Kirk]

Project A, Byzantine Empire BB8 laid down 1922

I would suggest the main battery be 3-Gun, not Triple. There is a ROF increase.
The end belt does not quite reach.

I see some value to retaining the upper belt.
But the armor deck is only 80mm, with no provisions for an upper deck.
So the area protected is not fully protected.

As for Pocket Battleships,
you've already done some, but I wasn't expecting others.
Though your logic makes some sense.
Plus, more units give more flexibility.

The triple guns are again a minor flaw.

Laid down in 1922, they will be launched and start fitting out in 1924,
so that's when I could reasonably "learn" about them. 

[Jefgte]

Rework BBX

Reduce belt from 320mm to 305mm
Increase deck from 80mm to 90mm

BBX, Byzantine Empire 2T3x343 laid down 1922

Displacement:
   18 500 t light; 19 468 t standard; 20 795 t normal; 21 857 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (570,87 ft / 570,87 ft) x 85,30 ft x (27,78 / 28,89 ft)
   (174,00 m / 174,00 m) x 26,00 m  x (8,47 / 8,80 m)

Armament:
      6 - 13,50" / 343 mm 45,0 cal guns - 1 408,75lbs / 639,00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1922 Model
     2 x 3-gun mounts on centreline ends, evenly spread
      16 - 4,72" / 120 mm 45,0 cal guns - 53,18lbs / 24,12kg shells, 160 per gun
     Quick firing guns in deck and hoist mounts, 1922 Model
     8 x Twin mounts on sides, evenly spread
      4 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 200 per gun
     Anti-air guns in deck mounts, 1922 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      8 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 4 000 per gun
     Machine guns in deck mounts, 1922 Model
     8 x Single mounts on side ends, evenly spread
      8 raised mounts
      Weight of broadside 9 358 lbs / 4 245 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12,0" / 305 mm   370,73 ft / 113,00 m   10,17 ft / 3,10 m
   Ends:   1,97" / 50 mm   200,13 ft / 61,00 m   9,84 ft / 3,00 m
   Upper:   3,54" / 90 mm   370,73 ft / 113,00 m   11,81 ft / 3,60 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1,57" / 40 mm   370,73 ft / 113,00 m   26,25 ft / 8,00 m
   Beam between torpedo bulkheads 65,62 ft / 20,00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13,4" / 340 mm   4,72" / 120 mm      11,8" / 300 mm
   3rd:   1,97" / 50 mm         -               -
   4th:   0,79" / 20 mm         -               -
   5th:   0,39" / 10 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 3,54" / 90 mm
   Forecastle: 0,98" / 25 mm  Quarter deck: 0,98" / 25 mm

   - Conning towers: Forward 11,81" / 300 mm, Aft 5,91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 73 468 shp / 54 807 Kw = 27,05 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 2 390 tons

Complement:
   865 - 1 125

Cost:
   £4,843 million / $19,370 million

Distribution of weights at normal displacement:
   Armament: 1 764 tons, 8,5 %
      - Guns: 1 764 tons, 8,5 %
   Armour: 6 688 tons, 32,2 %
      - Belts: 2 758 tons, 13,3 %
      - Torpedo bulkhead: 567 tons, 2,7 %
      - Armament: 1 160 tons, 5,6 %
      - Armour Deck: 1 914 tons, 9,2 %
      - Conning Towers: 289 tons, 1,4 %
   Machinery: 2 492 tons, 12,0 %
   Hull, fittings & equipment: 7 140 tons, 34,3 %
   Fuel, ammunition & stores: 2 295 tons, 11,0 %
   Miscellaneous weights: 416 tons, 2,0 %
      - Hull below water: 90 tons
      - Hull above water: 90 tons
      - On freeboard deck: 64 tons
      - Above deck: 172 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     26 755 lbs / 12 136 Kg = 21,7 x 13,5 " / 343 mm shells or 4,5 torpedoes
   Stability (Unstable if below 1.00): 1,08
   Metacentric height 4,5 ft / 1,4 m
   Roll period: 16,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,68
   Seaboat quality  (Average = 1.00): 1,06

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,538 / 0,544
   Length to Beam Ratio: 6,69 : 1
   'Natural speed' for length: 23,89 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 66
   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:   17,50 %,  24,28 ft / 7,40 m,  21,00 ft / 6,40 m
      - Forward deck:   32,50 %,  21,00 ft / 6,40 m,  17,72 ft / 5,40 m
      - Aft deck:   32,50 %,  17,72 ft / 5,40 m,  17,72 ft / 5,40 m
      - Quarter deck:   17,50 %,  17,72 ft / 5,40 m,  17,72 ft / 5,40 m
      - Average freeboard:      19,05 ft / 5,81 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 96,8 %
      - Above water (accommodation/working, high = better): 137,2 %
   Waterplane Area: 33 605 Square feet or 3 122 Square metres
   Displacement factor (Displacement / loading): 107 %
   Structure weight / hull surface area: 165 lbs/sq ft or 804 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,93
      - Longitudinal: 1,81
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

147t for 1914  Fire Control
25t for Marconi
90t for additionnal pumps
90t for additionnal ventilation
24t for 6TT x 21'' HW
40t reserved...

[Jefgte]

Rework Project A - 4T3x381

Project A, Byzantine Empire BB8 laid down 1921


Displacement:
   33 600 t light; 35 750 t standard; 37 792 t normal; 39 425 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (668,31 ft / 666,01 ft) x 108,27 ft (Bulges 118,11 ft) x (26,44 / 27,49 ft)
   (203,70 m / 203,00 m) x 33,00 m (Bulges 36,00 m)  x (8,06 / 8,38 m)

Armament:
      12 - 15,00" / 381 mm 42,0 cal guns - 1 920,01lbs / 870,90kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1921 Model
     4 x Triple mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      20 - 4,72" / 120 mm 45,0 cal guns - 53,17lbs / 24,12kg shells, 180 per gun
     Quick firing guns in deck and hoist mounts, 1921 Model
     10 x Twin mounts on sides, evenly spread
      4 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 250 per gun
     Anti-air guns in deck mounts, 1921 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      8 - 0,30" / 7,6 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 4 000 per gun
     Machine guns in deck mounts, 1921 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 24 158 lbs / 10 958 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13,4" / 340 mm   433,07 ft / 132,00 m   12,47 ft / 3,80 m
   Ends:   1,97" / 50 mm   232,94 ft / 71,00 m   9,84 ft / 3,00 m
   Upper:   3,94" / 100 mm   433,07 ft / 132,00 m   12,47 ft / 3,80 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
      1,97" / 50 mm   433,07 ft / 132,00 m   23,95 ft / 7,30 m
   Beam between torpedo bulkheads 91,86 ft / 28,00 m

   - Hull Bulges:
      0,39" / 10 mm   433,07 ft / 132,00 m   26,25 ft / 8,00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15,0" / 380 mm   4,72" / 120 mm      13,4" / 340 mm
   2nd:   0,79" / 20 mm         -               -
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 3,94" / 100 mm
   Forecastle: 1,57" / 40 mm  Quarter deck: 1,57" / 40 mm

   - Conning towers: Forward 11,81" / 300 mm, Aft 5,91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 41 800 shp / 31 183 Kw = 21,12 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 3 676 tons

Complement:
   1 354 - 1 761

Cost:
   £8,619 million / $34,476 million

Distribution of weights at normal displacement:
   Armament: 3 632 tons, 9,6 %
      - Guns: 3 632 tons, 9,6 %
   Armour: 12 621 tons, 33,4 %
      - Belts: 4 296 tons, 11,4 %
      - Torpedo bulkhead: 755 tons, 2,0 %
      - Bulges: 166 tons, 0,4 %
      - Armament: 3 434 tons, 9,1 %
      - Armour Deck: 3 541 tons, 9,4 %
      - Conning Towers: 430 tons, 1,1 %
   Machinery: 1 439 tons, 3,8 %
   Hull, fittings & equipment: 14 939 tons, 39,5 %
   Fuel, ammunition & stores: 4 192 tons, 11,1 %
   Miscellaneous weights: 968 tons, 2,6 %
      - Hull below water: 170 tons
      - Hull above water: 170 tons
      - On freeboard deck: 240 tons
      - Above deck: 388 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     61 126 lbs / 27 726 Kg = 36,2 x 15,0 " / 381 mm shells or 11,3 torpedoes
   Stability (Unstable if below 1.00): 1,20
   Metacentric height 7,9 ft / 2,4 m
   Roll period: 17,6 seconds
   Steadiness   - As gun platform (Average = 50 %): 74 %
         - Recoil effect (Restricted arc if above 1.00): 0,68
   Seaboat quality  (Average = 1.00): 1,33

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,636 / 0,638
   Length to Beam Ratio: 5,64 : 1
   'Natural speed' for length: 25,81 kts
   Power going to wave formation at top speed: 42 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   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:   17,50 %,  26,25 ft / 8,00 m,  22,97 ft / 7,00 m
      - Forward deck:   32,00 %,  22,97 ft / 7,00 m,  19,69 ft / 6,00 m
      - Aft deck:   33,00 %,  19,69 ft / 6,00 m,  19,69 ft / 6,00 m
      - Quarter deck:   17,50 %,  19,69 ft / 6,00 m,  19,69 ft / 6,00 m
      - Average freeboard:      21,01 ft / 6,41 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 73,4 %
      - Above water (accommodation/working, high = better): 157,2 %
   Waterplane Area: 54 532 Square feet or 5 066 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 233 lbs/sq ft or 1 140 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,45
      - Overall: 1,00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

363t for 1918  Fire Control
25t for Marconi
170t for additionnal pumps
170t for additionnal ventilation
240t reserved...

[Kaiser Kirk]

Project C, Byzantine Empire BB8 - Pocket Battleship laid down 1922

Displacement:
   18 000 t light; 19 143 t standard; 20 482 t normal; 21 553 t full load

I was curious and checked my files last night.
I've had similar ships slated for builds starting 1913...but keep loosing out.
My version of these types was last updated Oct 7, 21 to a 1920 laydown.
19,000t - so we're close there.
I have 6 x 365L45, and 26 knots to match my Stormbringer class.
Anyhow, if you do lay these down, I will have to dust off and update my designs :)

[Jefgte]

Project C, Byzantine Empire BB8 - Pocket Battleship laid down 1922

Displacement:
   18 000 t light; 19 143 t standard; 20 482 t normal; 21 553 t full load

I was curious and checked my files last night.
I've had similar ships slated for builds starting 1913...but keep loosing out.
My version of these types was last updated Oct 7, 21 to a 1920 laydown.
19,000t - so we're close there.
I have 6 x 365L45, and 26 knots to match my Stormbringer class.
Anyhow, if you do lay these down, I will have to dust off and update my designs :)

Project C is not in my PLAN

[Jefgte]

A kind of Super Imperator (BB7 - 5T2x381)) ala Nevada/Doria

1921 Super Imperator class, Byzantine Empire BB9 laid down 1921

Displacement:
   31 400 t light; 33 305 t standard; 34 976 t normal; 36 313 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (649,61 ft / 649,61 ft) x 108,27 ft x (27,72 / 28,60 ft)
   (198,00 m / 198,00 m) x 33,00 m  x (8,45 / 8,72 m)

Armament:
      6 - 15,00" / 381 mm 42,0 cal guns - 1 920,23lbs / 871,00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1921 Model
     2 x 3-gun mounts on centreline ends, evenly spread
      4 - 15,00" / 381 mm 42,0 cal guns - 1 920,23lbs / 871,00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1921 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts
      20 - 4,72" / 120 mm 45,0 cal guns - 53,17lbs / 24,12kg shells, 220 per gun
     Quick firing guns in deck and hoist mounts, 1921 Model
     10 x 2-gun mounts on sides, evenly spread
      4 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 280 per gun
     Anti-air guns in deck mounts, 1921 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      8 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 4 000 per gun
     Machine guns in deck mounts, 1921 Model
     8 x Single mounts on side ends, evenly spread
      8 raised mounts
      Weight of broadside 20 320 lbs / 9 217 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13,4" / 340 mm   429,79 ft / 131,00 m   13,12 ft / 4,00 m
   Ends:   3,94" / 100 mm   219,82 ft / 67,00 m   9,84 ft / 3,00 m
   Upper:   3,94" / 100 mm   429,79 ft / 131,00 m   10,50 ft / 3,20 m
     Main Belt covers 102 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1,77" / 45 mm   429,79 ft / 131,00 m   27,36 ft / 8,34 m
   Beam between torpedo bulkheads 85,30 ft / 26,00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13,4" / 340 mm   5,91" / 150 mm      11,8" / 300 mm
   2nd:   13,4" / 340 mm   5,91" / 150 mm      11,8" / 300 mm
   3rd:   0,79" / 20 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 3,94" / 100 mm
   Forecastle: 1,57" / 40 mm  Quarter deck: 1,57" / 40 mm

   - Conning towers: Forward 13,39" / 340 mm, Aft 5,31" / 135 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 38 800 shp / 28 945 Kw = 21,05 kts
   Range 8 000nm at 12,00 kts
   Bunker at max displacement = 3 008 tons (25% coal)

Complement:
   1 278 - 1 662

Cost:
   £7,175 million / $28,701 million

Distribution of weights at normal displacement:
   Armament: 3 396 tons, 9,7 %
      - Guns: 3 396 tons, 9,7 %
   Armour: 11 865 tons, 33,9 %
      - Belts: 4 429 tons, 12,7 %
      - Torpedo bulkhead: 771 tons, 2,2 %
      - Armament: 2 805 tons, 8,0 %
      - Armour Deck: 3 429 tons, 9,8 %
      - Conning Towers: 431 tons, 1,2 %
   Machinery: 1 367 tons, 3,9 %
   Hull, fittings & equipment: 13 862 tons, 39,6 %
   Fuel, ammunition & stores: 3 576 tons, 10,2 %
   Miscellaneous weights: 910 tons, 2,6 %
      - Hull below water: 150 tons
      - Hull above water: 150 tons
      - On freeboard deck: 220 tons
      - Above deck: 390 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     62 155 lbs / 28 193 Kg = 36,8 x 15,0 " / 381 mm shells or 12,0 torpedoes
   Stability (Unstable if below 1.00): 1,17
   Metacentric height 7,6 ft / 2,3 m
   Roll period: 16,5 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,68
   Seaboat quality  (Average = 1.00): 1,31

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,628 / 0,632
   Length to Beam Ratio: 6,00 : 1
   'Natural speed' for length: 25,49 kts
   Power going to wave formation at top speed: 42 %
   Trim (Max stability = 0, Max steadiness = 100): 54
   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:   17,50 %,  24,93 ft / 7,60 m,  21,00 ft / 6,40 m
      - Forward deck:   32,50 %,  21,00 ft / 6,40 m,  17,72 ft / 5,40 m
      - Aft deck:   32,50 %,  17,72 ft / 5,40 m,  17,72 ft / 5,40 m
      - Quarter deck:   17,50 %,  17,72 ft / 5,40 m,  17,72 ft / 5,40 m
      - Average freeboard:      19,10 ft / 5,82 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 69,3 %
      - Above water (accommodation/working, high = better): 145,9 %
   Waterplane Area: 52 797 Square feet or 4 905 Square metres
   Displacement factor (Displacement / loading): 116 %
   Structure weight / hull surface area: 227 lbs/sq ft or 1 108 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,52
      - Overall: 1,00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Misc weight:
50t for 2 x Marconi
340t for top fire control
100t for Admiral staff
150t for climat control
150t for additionnal pumps installation
120t reserved