Byzantine Empire 1930 - 1931

[Jefgte]

...For the colonial jobs

3T2x133 - 29kts

C16, Byzantine Empire C16 laid down 1931

Displacement:
   3 000 t light; 3 179 t standard; 3 430 t normal; 3 630 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (442,88 ft / 439,63 ft) x 45,93 ft x (13,70 / 14,25 ft)
   (134,99 m / 134,00 m) x 14,00 m  x (4,18 / 4,34 m)

Armament:
      6 - 5,24" / 133 mm 50,0 cal guns - 80,01lbs / 36,29kg shells, 345 per gun
     Dual purpose guns in deck and hoist mounts, 1931 Model
     3 x 2-gun mounts on centreline ends, majority forward
      1 raised mount - superfiring
      8 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
     Anti-air guns in deck mounts, 1931 Model
     4 x 2-gun mounts on side ends, evenly spread
      4 raised mounts
      4 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1931 Model
     2 x 2-gun mounts on sides, forward deck forward
      2 raised mounts
      Weight of broadside 496 lbs / 225 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,15" / 80 mm   305,12 ft / 93,00 m   9,84 ft / 3,00 m
   Ends:   1,18" / 30 mm   134,51 ft / 41,00 m   7,87 ft / 2,40 m
     Main Belt covers 107 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,98" / 25 mm   0,59" / 15 mm      0,59" / 15 mm
   3rd:   0,24" / 6 mm         -               -
   4th:   0,24" / 6 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 1,38" / 35 mm
   Forecastle: 0,79" / 20 mm  Quarter deck: 0,79" / 20 mm

   - Conning towers: Forward 3,15" / 80 mm, Aft 1,18" / 30 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 32 192 shp / 24 015 Kw = 29,00 kts
   Range 6 000nm at 12,00 kts
   Bunker at max displacement = 451 tons

Complement:
   223 - 291

Cost:
   £1,260 million / $5,041 million

Distribution of weights at normal displacement:
   Armament: 149 tons, 4,3 %
      - Guns: 149 tons, 4,3 %
   Armour: 769 tons, 22,4 %
      - Belts: 429 tons, 12,5 %
      - Armament: 18 tons, 0,5 %
      - Armour Deck: 301 tons, 8,8 %
      - Conning Towers: 21 tons, 0,6 %
   Machinery: 963 tons, 28,1 %
   Hull, fittings & equipment: 1 053 tons, 30,7 %
   Fuel, ammunition & stores: 430 tons, 12,5 %
   Miscellaneous weights: 66 tons, 1,9 %
      - On freeboard deck: 26 tons
      - Above deck: 40 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3 129 lbs / 1 419 Kg = 43,6 x 5,2 " / 133 mm shells or 0,9 torpedoes
   Stability (Unstable if below 1.00): 1,16
   Metacentric height 2,0 ft / 0,6 m
   Roll period: 13,5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,37
   Seaboat quality  (Average = 1.00): 1,17

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,434 / 0,442
   Length to Beam Ratio: 9,57 : 1
   'Natural speed' for length: 20,97 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 8,00 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 %,  23,13 ft / 7,05 m,  18,70 ft / 5,70 m
      - Forward deck:   33,00 %,  18,70 ft / 5,70 m,  14,44 ft / 4,40 m
      - Aft deck:   33,00 %,  14,44 ft / 4,40 m,  12,47 ft / 3,80 m
      - Quarter deck:   16,00 %,  12,47 ft / 3,80 m,  13,12 ft / 4,00 m
      - Average freeboard:      15,64 ft / 4,77 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 106,7 %
      - Above water (accommodation/working, high = better): 163,1 %
   Waterplane Area: 12 719 Square feet or 1 182 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 56 lbs/sq ft or 273 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,71
      - Longitudinal: 1,18
      - Overall: 0,75
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
15t for1924 top mast rangefinder
25t for LR marconi
OD
16t for 1x4TTx533HW
10t reserved for new material, paravanes, armament, minen.
AW
climatisation

Or this one with 4T2x133 - 27kts

O class, Byzantine Empire 4000t-Colonial Armored Gun Boat laid down 1931

Displacement:
   3 000 t light; 3 213 t standard; 3 466 t normal; 3 668 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (439,60 ft / 436,35 ft) x 45,93 ft x (12,77 / 13,31 ft)
   (133,99 m / 133,00 m) x 14,00 m  x (3,89 / 4,06 m)

Armament:
      8 - 5,24" / 133 mm 50,0 cal guns - 80,01lbs / 36,29kg shells, 350 per gun
     Dual purpose guns in deck and hoist mounts, 1931 Model
     4 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      8 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
     Anti-air guns in deck mounts, 1931 Model
     4 x 2-gun mounts on sides, forward deck aft
      4 raised mounts
      8 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1931 Model
     4 x 2-gun mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 657 lbs / 298 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,54" / 90 mm   285,43 ft / 87,00 m   9,84 ft / 3,00 m
   Ends:   0,98" / 25 mm   150,92 ft / 46,00 m   7,87 ft / 2,40 m
     Main Belt covers 101 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,98" / 25 mm   0,59" / 15 mm      0,59" / 15 mm
   4th:   0,24" / 6 mm         -               -
   5th:   0,24" / 6 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 1,57" / 40 mm
   Forecastle: 0,98" / 25 mm  Quarter deck: 0,98" / 25 mm

   - Conning towers: Forward 3,54" / 90 mm, Aft 1,18" / 30 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 24 979 shp / 18 635 Kw = 27,00 kts
   Range 6 000nm at 12,00 kts
   Bunker at max displacement = 455 tons

Complement:
   225 - 293

Cost:
   £1,199 million / $4,796 million

Distribution of weights at normal displacement:
   Armament: 197 tons, 5,7 %
      - Guns: 197 tons, 5,7 %
   Armour: 857 tons, 24,7 %
      - Belts: 453 tons, 13,1 %
      - Armament: 24 tons, 0,7 %
      - Armour Deck: 357 tons, 10,3 %
      - Conning Towers: 23 tons, 0,7 %
   Machinery: 747 tons, 21,6 %
   Hull, fittings & equipment: 1 073 tons, 31,0 %
   Fuel, ammunition & stores: 466 tons, 13,4 %
   Miscellaneous weights: 126 tons, 3,6 %
      - Hull below water: 20 tons
      - On freeboard deck: 61 tons
      - Above deck: 45 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4 011 lbs / 1 819 Kg = 55,9 x 5,2 " / 133 mm shells or 1,1 torpedoes
   Stability (Unstable if below 1.00): 1,13
   Metacentric height 2,0 ft / 0,6 m
   Roll period: 13,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,54
   Seaboat quality  (Average = 1.00): 1,28

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,474 / 0,481
   Length to Beam Ratio: 9,50 : 1
   'Natural speed' for length: 20,89 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   Bow angle (Positive = bow angles forward): 8,00 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 %,  23,13 ft / 7,05 m,  18,86 ft / 5,75 m
      - Forward deck:   33,00 %,  18,86 ft / 5,75 m,  14,44 ft / 4,40 m
      - Aft deck:   33,00 %,  14,44 ft / 4,40 m,  13,12 ft / 4,00 m
      - Quarter deck:   16,50 %,  13,12 ft / 4,00 m,  13,78 ft / 4,20 m
      - Average freeboard:      15,86 ft / 4,83 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 91,2 %
      - Above water (accommodation/working, high = better): 168,1 %
   Waterplane Area: 13 047 Square feet or 1 212 Square metres
   Displacement factor (Displacement / loading): 112 %
   Structure weight / hull surface area: 58 lbs/sq ft or 281 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,72
      - Longitudinal: 1,19
      - Overall: 0,75
   Adequate 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

AD
20t for top mast rangefinder - 1924 FC
25t for LR Marconi
OD
24t for 2x3TTx533 HW
25t for seaplane + cata
12t reserved for new material, armament...
AW
climatisation
BW
20t for additionnal pumps

[TacCovert4]

The main battery isn't triple stacked!

[Kaiser Kirk]

I liked the C16 cruiser.

I have finished building my 1925 Sayidda Maritime Patrol frigates,
and needed a new design for future ones.

I thought if I started with your ship and modified from there,
I might have good results, or learn some trick of shipbuilding.

The result was I noticed a couple things.


Comment 1
Always possible that I have made a error somewhere.
So I have attached My SS effort.


Comment 2 :
As far as I can tell, I copied the vessel accurately.
It came out a couple tons different here and there
and a 0.74 comp hull.

That makes me wonder what version of SS you are using.
I am guessing it's just SS3.

When you open Springsharp and go to the top "Help" Tab,
and then "About F1"
What does it say?

Mine says :
Springsharp 3.0

A warship design simulator
beta 3.0. Copywright 2008...etc.

From Rules- Ship Design Guidelines :
SS3b3 is the program we use.  We do not use SS2 or any other software.  If the ship can not be designed from scratch in SS3b3 using our design guidelines and naval technology trees, the design is invalid.



Comment 3 :
Your belt is listed as 107%.

I did notice your citadel area is 66%,
which compared to the normal 65% is 1.5% more.

So you manually altered the belt length instead of
Changing the hull %s and hitting default.

This means there is 93m of hull protected by the 80mm main belt- which comes with end bulkheads of 80mm,
but only 88.44m of hull protected by 35mm deck.
There's only 4.56m of citadel protected by 80mm belt and 20mm deck, but that is 5%.

It is not a big "golden twinkie", and not nearly as bad as several IJN ships,
but it is there.

This is something I've pointed out to others and it's included in the Ship Design notes but
citadel deck length for the armor deck is dependent on your deck length %s on the freeboard tab,
so folks should not be manually adjusting the belt to make it long enough.

   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   18.00 %,  23.13 ft / 7.05 m,  18.70 ft / 5.70 m
      - Forward deck:   33.00 %,  18.70 ft / 5.70 m,  14.44 ft / 4.40 m
      - Aft deck:   33.00 %,  14.44 ft / 4.40 m,  12.47 ft / 3.80 m
      - Quarter deck:   16.00 %,  12.47 ft / 3.80 m,  13.12 ft / 4.00 m
      - Average freeboard:      15.64 ft / 4.77 m

[Jefgte]

I use SpringSharp 3.0b3

(438 272 octets)

Here the SS:

[The Rock Doctor]

I know I've done that times.

Edit:  Although it might not matter if one is using monolithic deck thickness the entire length of the ship.

[TacCovert4]

I suspect that the deck issue Kirk brought up was the cause of the. 74.  Deck is heavy, that's probably what happened.   

[Kaiser Kirk]

thanks Jefgte, I'll download it and look at it later.

Sounds like we're both running the right version,
so I'm very curious as to what is going on.

The SS I attached modeled the freeboard breaks the same as you, and has the same BC and hull dimensions, but a heavier engine.

I suspect the differences may lie in numbers Springsharp rounds/drops between the actual SS and the Report.
For example, long ago I asked how folks were getting even numbers for SHP, and found they had like 30.23455 knots,
but the Report was just 30.23, so I could not get the same result.

[Jefgte]

...For example, long ago I asked how folks were getting even numbers for SHP, and found they had like 30.23455 knots,
but the Report was just 30.23, so I could not get the same result.

I do the same thing for tonnage

Draught 4.8833m to have a 7000t cruiser   :)
If I put 4,89m => I will have 7002t    >:(

[The Rock Doctor]

I'm perfectly good having whatever tonnage but I will scuttle ships with random power outputs in my own harbours.

[Kaiser Kirk]

Well looking at the actual SS, those roundings were indeed the reason why my clone did not match up.
Different draft & speed at the least.

If you view Parthian ships, you'll see I aim for a Light Tonnage that is a 10's number (10, 100, 1000)
So the Sturgeon are 460, not 464 or something.

When I wind up with a 3004 ton ship , and I need it to be 3000, I add either shells, or range.
So my ranges are frequently weird.

For example I am calling my next Maritime Patrol frigate the Atossa A/B/C.
The 'A' currently has 9,580 nm of fuel, to get the light tonnage down to 3000.

Those ships have to wait until I finish the new 165mm and 130mm guns, depending if I build the A or B..or C.  Very similar to Jefgte's in many ways, but I am trading armor for fuel (essentially) and a great deal more miscellaneous weight. However, since the goal is Maritime patrol, perhaps I should look
at Jefgte's slower cruise speed as a way of range with less weight. Alternately, the D version looked at
Diesels, but that did not work with trying to also hit a high speed and a light tonnage limit. 

[Jefgte]

Re SS C16

C16, Byzantine Empire C16 laid down 1931

Displacement:
   3 000 t light; 3 179 t standard; 3 432 t normal; 3 635 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (464,34 ft / 459,32 ft) x 45,93 ft x (13,12 / 13,65 ft)
   (141,53 m / 140,00 m) x 14,00 m  x (4,00 / 4,16 m)

Armament:
      6 - 5,24" / 133 mm 50,0 cal guns - 80,01lbs / 36,29kg shells, 345 per gun
     Dual purpose guns in deck and hoist mounts, 1931 Model
     3 x 2-gun mounts on centreline ends, majority forward
      1 raised mount - superfiring
      8 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
     Anti-air guns in deck mounts, 1931 Model
     4 x 2-gun mounts on side ends, evenly spread
      4 raised mounts
      4 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1931 Model
     2 x 2-gun mounts on sides, forward deck forward
      2 raised mounts
      Weight of broadside 496 lbs / 225 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2,95" / 75 mm   312,34 ft / 95,20 m   9,19 ft / 2,80 m
   Ends:   0,79" / 20 mm   146,95 ft / 44,79 m   8,01 ft / 2,44 m
     Main Belt covers 105 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,98" / 25 mm   0,59" / 15 mm      0,59" / 15 mm
   3rd:   0,24" / 6 mm         -               -
   4th:   0,24" / 6 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 1,38" / 35 mm
   Forecastle: 0,79" / 20 mm  Quarter deck: 0,79" / 20 mm

   - Conning towers: Forward 3,15" / 80 mm, Aft 1,18" / 30 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 31 456 shp / 23 466 Kw = 28,99 kts
   Range 6 000nm at 12,00 kts
   Bunker at max displacement = 455 tons

Complement:
   223 - 291

Cost:
   £1,247 million / $4,988 million

Distribution of weights at normal displacement:
   Armament: 149 tons, 4,3 %
      - Guns: 149 tons, 4,3 %
   Armour: 733 tons, 21,4 %
      - Belts: 377 tons, 11,0 %
      - Armament: 18 tons, 0,5 %
      - Armour Deck: 318 tons, 9,3 %
      - Conning Towers: 21 tons, 0,6 %
   Machinery: 941 tons, 27,4 %
   Hull, fittings & equipment: 1 112 tons, 32,4 %
   Fuel, ammunition & stores: 432 tons, 12,6 %
   Miscellaneous weights: 66 tons, 1,9 %
      - On freeboard deck: 26 tons
      - Above deck: 40 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3 379 lbs / 1 532 Kg = 47,1 x 5,2 " / 133 mm shells or 0,9 torpedoes
   Stability (Unstable if below 1.00): 1,14
   Metacentric height 2,0 ft / 0,6 m
   Roll period: 13,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 77 %
         - Recoil effect (Restricted arc if above 1.00): 0,40
   Seaboat quality  (Average = 1.00): 1,28

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,434 / 0,442
   Length to Beam Ratio: 10,00 : 1
   'Natural speed' for length: 21,43 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 12,00 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 %,  23,62 ft / 7,20 m,  19,03 ft / 5,80 m
      - Forward deck:   34,00 %,  19,03 ft / 5,80 m,  14,76 ft / 4,50 m
      - Aft deck:   34,00 %,  14,76 ft / 4,50 m,  12,80 ft / 3,90 m
      - Quarter deck:   14,00 %,  12,80 ft / 3,90 m,  13,45 ft / 4,10 m
      - Average freeboard:      16,02 ft / 4,88 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 104,6 %
      - Above water (accommodation/working, high = better): 174,1 %
   Waterplane Area: 13 288 Square feet or 1 235 Square metres
   Displacement factor (Displacement / loading): 109 %
   Structure weight / hull surface area: 56 lbs/sq ft or 273 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,71
      - Longitudinal: 1,16
      - Overall: 0,75
   Adequate 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

AD
15t for1924 top mast rangefinder
25t for LR marconi
OD
16t for 1x4TTx533HW
10t reserved for new material, paravanes, armament, minen.
AW
climatisation

[Jefgte]

Byzantium plans to replace its old colonial battleships armed with 254mm by Panzerschiff.
They'll work with classes BB3 - BB4 & BB7 (23-24kts).

Koloni, Byzantine Empire colonial BB laid down 1931

Displacement:
   15 530 t light; 16 459 t standard; 17 159 t normal; 17 719 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (572,21 ft / 567,59 ft) x 78,74 ft x (21,47 / 22,05 ft)
   (174,41 m / 173,00 m) x 24,00 m  x (6,54 / 6,72 m)

Armament:
      6 - 13,50" / 343 mm 45,0 cal guns - 1 410,01lbs / 639,57kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1931 Model
     2 x 3-gun mounts on centreline ends, evenly spread
      8 - 4,49" / 114 mm 45,0 cal guns - 58,00lbs / 26,31kg shells, 300 per gun
     Dual purpose guns in deck mounts, 1931 Model
     8 x 2-gun mounts on sides, evenly spread
      16 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
     Anti-air guns in deck mounts, 1931 Model
     8 x 2-gun mounts on side ends, evenly spread
      8 raised mounts
      16 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1931 Model
     8 x 2-gun mounts on side ends, evenly spread
      8 raised mounts
      Weight of broadside 8 957 lbs / 4 063 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12,6" / 320 mm   368,93 ft / 112,45 m   10,66 ft / 3,25 m
   Ends:   1,57" / 40 mm   198,62 ft / 60,54 m   10,66 ft / 3,25 m
   Upper:   1,57" / 40 mm   368,93 ft / 112,45 m   8,01 ft / 2,44 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
      1,77" / 45 mm   368,93 ft / 112,45 m   20,44 ft / 6,23 m
   Beam between torpedo bulkheads 59,06 ft / 18,00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13,4" / 340 mm   3,94" / 100 mm      11,0" / 280 mm
   2nd:   0,39" / 10 mm         -               -
   3rd:   0,24" / 6 mm         -               -
   5th:   0,24" / 6 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 3,94" / 100 mm
   Forecastle: 1,57" / 40 mm  Quarter deck: 2,76" / 70 mm

   - Conning towers: Forward 11,81" / 300 mm, Aft 3,94" / 100 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 42 183 shp / 31 468 Kw = 24,00 kts
   Range 6 000nm at 12,00 kts
   Bunker at max displacement = 1 260 tons

Complement:
   749 - 974

Cost:
   £6,260 million / $25,041 million

Distribution of weights at normal displacement:
   Armament: 1 645 tons, 9,6 %
      - Guns: 1 645 tons, 9,6 %
   Armour: 6 438 tons, 37,5 %
      - Belts: 2 458 tons, 14,3 %
      - Torpedo bulkhead: 494 tons, 2,9 %
      - Armament: 998 tons, 5,8 %
      - Armour Deck: 2 262 tons, 13,2 %
      - Conning Towers: 226 tons, 1,3 %
   Machinery: 1 261 tons, 7,4 %
   Hull, fittings & equipment: 5 857 tons, 34,1 %
   Fuel, ammunition & stores: 1 629 tons, 9,5 %
   Miscellaneous weights: 329 tons, 1,9 %
      - Hull below water: 75 tons
      - On freeboard deck: 64 tons
      - Above deck: 190 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     28 659 lbs / 13 000 Kg = 23,3 x 13,5 " / 343 mm shells or 5,2 torpedoes
   Stability (Unstable if below 1.00): 1,16
   Metacentric height 4,6 ft / 1,4 m
   Roll period: 15,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,77
   Seaboat quality  (Average = 1.00): 1,26

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,626 / 0,629
   Length to Beam Ratio: 7,21 : 1
   'Natural speed' for length: 23,82 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   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 %,  26,25 ft / 8,00 m,  21,98 ft / 6,70 m
      - Forward deck:   32,50 %,  21,98 ft / 6,70 m,  16,40 ft / 5,00 m
      - Aft deck:   32,50 %,  16,40 ft / 5,00 m,  15,09 ft / 4,60 m
      - Quarter deck:   17,00 %,  15,09 ft / 4,60 m,  15,09 ft / 4,60 m
      - Average freeboard:      18,19 ft / 5,54 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 84,6 %
      - Above water (accommodation/working, high = better): 148,8 %
   Waterplane Area: 33 487 Square feet or 3 111 Square metres
   Displacement factor (Displacement / loading): 107 %
   Structure weight / hull surface area: 156 lbs/sq ft or 760 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,44
      - Overall: 1,00
   Adequate 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

AD
165t fire control
25t Marconi
OD
24t for 2x3TTx533HW
40t reserved
AW
climatisation
BW
75t for extra pump installation

[The Rock Doctor]

Those would be the natural flagships for the colonial stations - I'd probably want to fit some command facilities into the design if possible.

[Jefgte]

2T3x381 is more dissuasive than 2T3x343

Koloni, Byzantine Empire colonial BB laid down 1931

Displacement:
    18 510 t light; 19 730 t standard; 20 517 t normal; 21 146 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (573,64 ft / 570,87 ft) x 88,58 ft x (22,68 / 23,26 ft)
    (174,85 m / 174,00 m) x 27,00 m  x (6,91 / 7,09 m)

Armament:
      6 - 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, 1931 Model
      2 x 3-gun mounts on centreline ends, evenly spread
      4 - 4,49" / 114 mm 45,0 cal guns - 58,00lbs / 26,31kg shells, 340 per gun
      Dual purpose guns in deck mounts, 1931 Model
      2 x 2-gun mounts on centreline ends, evenly spread
        2 raised mounts
      8 - 4,49" / 114 mm 45,0 cal guns - 58,00lbs / 26,31kg shells, 340 per gun
      Dual purpose guns in deck mounts, 1931 Model
      4 x 2-gun mounts on sides, evenly spread
      16 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
      Anti-air guns in deck mounts, 1931 Model
      8 x 2-gun mounts on side ends, evenly spread
        8 raised mounts
      16 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
      Machine guns in deck mounts, 1931 Model
      8 x 2-gun mounts on side ends, evenly spread
        8 raised mounts
      Weight of broadside 12 249 lbs / 5 556 kg

Armour:
  - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    12,6" / 320 mm    371,06 ft / 113,10 m    11,29 ft / 3,44 m
    Ends:    1,57" / 40 mm    199,77 ft / 60,89 m    11,29 ft / 3,44 m
    Upper:    1,57" / 40 mm    371,06 ft / 113,10 m    8,01 ft / 2,44 m
      Main Belt covers 100 % of normal length

  - Torpedo Bulkhead - Strengthened structural bulkheads:
        1,77" / 45 mm    371,06 ft / 113,10 m    21,62 ft / 6,59 m
    Beam between torpedo bulkheads 68,90 ft / 21,00 m

  - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    13,4" / 340 mm    3,94" / 100 mm        11,0" / 280 mm
    2nd:    0,39" / 10 mm          -                  -
    3rd:    0,39" / 10 mm          -                  -
    4th:    0,24" / 6 mm          -                  -
    5th:    0,24" / 6 mm          -                  -

  - Armoured deck - single deck:
    For and Aft decks: 3,94" / 100 mm
    Forecastle: 1,57" / 40 mm  Quarter deck: 2,76" / 70 mm

  - Conning towers: Forward 11,81" / 300 mm, Aft 3,94" / 100 mm

Machinery:
    Oil fired boilers, steam turbines,
    Geared drive, 4 shafts, 47 760 shp / 35 629 Kw = 24,00 kts
    Range 6 000nm at 12,00 kts
    Bunker at max displacement = 1 415 tons

Complement:
    856 - 1 114

Cost:
    £7,977 million / $31,908 million

Distribution of weights at normal displacement:
    Armament: 2 182 tons, 10,6 %
      - Guns: 2 182 tons, 10,6 %
    Armour: 7 143 tons, 34,8 %
      - Belts: 2 647 tons, 12,9 %
      - Torpedo bulkhead: 526 tons, 2,6 %
      - Armament: 1 157 tons, 5,6 %
      - Armour Deck: 2 559 tons, 12,5 %
      - Conning Towers: 254 tons, 1,2 %
    Machinery: 1 428 tons, 7,0 %
    Hull, fittings & equipment: 7 257 tons, 35,4 %
    Fuel, ammunition & stores: 2 006 tons, 9,8 %
    Miscellaneous weights: 500 tons, 2,4 %
      - Hull below water: 90 tons
      - On freeboard deck: 167 tons
      - Above deck: 243 tons

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      31 823 lbs / 14 435 Kg = 18,9 x 15,0 " / 381 mm shells or 5,6 torpedoes
    Stability (Unstable if below 1.00): 1,20
    Metacentric height 5,8 ft / 1,8 m
    Roll period: 15,4 seconds
    Steadiness    - As gun platform (Average = 50 %): 70 %
            - Recoil effect (Restricted arc if above 1.00): 0,68
    Seaboat quality  (Average = 1.00): 1,17

Hull form characteristics:
    Hull has a flush deck,
      a ram bow and a cruiser stern
    Block coefficient (normal/deep): 0,626 / 0,629
    Length to Beam Ratio: 6,44 : 1
    'Natural speed' for length: 23,89 kts
    Power going to wave formation at top speed: 51 %
    Trim (Max stability = 0, Max steadiness = 100): 60
    Bow angle (Positive = bow angles forward): 6,00 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 %,  26,41 ft / 8,05 m,  22,15 ft / 6,75 m
      - Forward deck:    32,50 %,  22,15 ft / 6,75 m,  16,57 ft / 5,05 m
      - Aft deck:    32,50 %,  16,57 ft / 5,05 m,  15,26 ft / 4,65 m
      - Quarter deck:    17,00 %,  15,26 ft / 4,65 m,  15,26 ft / 4,65 m
      - Average freeboard:        18,35 ft / 5,59 m

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 87,1 %
        - Above water (accommodation/working, high = better): 148,7 %
    Waterplane Area: 37 891 Square feet or 3 520 Square metres
    Displacement factor (Displacement / loading): 103 %
    Structure weight / hull surface area: 175 lbs/sq ft or 855 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0,95
        - Longitudinal: 1,56
        - Overall: 1,00
    Adequate machinery, storage, compartmentation space
    Excellent accommodation and workspace room
    Ship has slow, easy roll, a good, steady gun platform

AD
218t fire control
25t Marconi
OD
24t for 2x3TTx533HW
100t for Flag Ship
43t reserved
AW
climatisation
BW
90t for extra pump installation

[The Rock Doctor]

Can't disagree with that assessment.