Byzantine Empire 1918-1922

[Desertfox]

I have a grand total of 2 cruisers that are a) Can go at least 27kts, and b) Have at least 6" guns... I have an additional 10 than meet a) and 4 that meet b)

[TacCovert4]

Looks at cruiser fleet.

Cries softly.

"At least all but five of mine are modern!"

(Has 18 cruisers counting those finishing production and the 3 light battlecruiser 'razees')

[Jefgte]

Testing a colonial TB

T1300, Byzantine Empire Improved T840 (1920-840t) laid down 1923

Displacement:
   1 300 t light; 1 349 t standard; 1 485 t normal; 1 593 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (331,00 ft / 327,76 ft) x 32,22 ft x (12,30 / 12,89 ft)
   (100,89 m / 99,90 m) x 9,82 m  x (3,75 / 3,93 m)

Armament:
      4 - 4,00" / 102 mm 45,0 cal guns - 32,27lbs / 14,64kg shells, 200 per gun
     Quick firing guns in deck mounts, 1923 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      1 - 3,00" / 76,2 mm 45,0 cal gun - 13,62lbs / 6,18kg shells, 250 per gun
     Anti-air gun in deck mount, 1923 Model
     1 x Single mount on centreline, forward deck aft
      1 raised mount
      2 - 1,85" / 47,0 mm 50,0 cal guns - 3,35lbs / 1,52kg shells, 1 000 per gun
     Quick firing guns in deck mounts, 1923 Model
     2 x Single mounts on sides, forward deck aft
      2 raised mounts
      2 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 4 000 per gun
     Machine guns in deck mounts, 1923 Model
     2 x Single mounts on sides, forward deck forward
      Weight of broadside 149 lbs / 68 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,39" / 10 mm         -               -
   2nd:   0,39" / 10 mm         -               -
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 33 600 shp / 25 065 Kw = 32,32 kts
   Range 5 000nm at 12,00 kts
   Bunker at max displacement = 244 tons

Complement:
   119 - 155

Cost:
   £0,479 million / $1,916 million

Distribution of weights at normal displacement:
   Armament: 28 tons, 1,9 %
      - Guns: 28 tons, 1,9 %
   Armour: 6 tons, 0,4 %
      - Armament: 6 tons, 0,4 %
   Machinery: 798 tons, 53,7 %
   Hull, fittings & equipment: 377 tons, 25,4 %
   Fuel, ammunition & stores: 185 tons, 12,5 %
   Miscellaneous weights: 91 tons, 6,1 %
      - On freeboard deck: 63 tons
      - Above deck: 28 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     378 lbs / 171 Kg = 11,8 x 4,0 " / 102 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,17
   Metacentric height 1,2 ft / 0,4 m
   Roll period: 12,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,18
   Seaboat quality  (Average = 1.00): 1,02

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,400 / 0,410
   Length to Beam Ratio: 10,17 : 1
   'Natural speed' for length: 18,10 kts
   Power going to wave formation at top speed: 67 %
   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:   17,50 %,  18,37 ft / 5,60 m,  15,75 ft / 4,80 m
      - Forward deck:   32,50 %,  15,75 ft / 4,80 m,  12,47 ft / 3,80 m
      - Aft deck:   32,50 %,  12,47 ft / 3,80 m,  12,47 ft / 3,80 m
      - Quarter deck:   17,50 %,  12,47 ft / 3,80 m,  12,47 ft / 3,80 m
      - Average freeboard:      13,76 ft / 4,19 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 179,1 %
      - Above water (accommodation/working, high = better): 138,2 %
   Waterplane Area: 6 500 Square feet or 604 Square metres
   Displacement factor (Displacement / loading): 62 %
   Structure weight / hull surface area: 30 lbs/sq ft or 148 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,88
      - Overall: 0,57
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

24t for 6TT x 533 HW
3t for 1918 top mast rangefinder
25t for LR marconi
5t for additionnal engines ventillation
15t for improved Hydrophone
5t for 50x90DC
4t for paravanes
10t reserved for new material, armament, minen.

Trial speed: 33kts
Bonus: 0.69

[The Rock Doctor]

It's a pretty handy ship.  I like it.

[Kaiser Kirk]

I was very confused on how he could manage that on a 300 ton hull.
I missed the '1' in front of the 300.

[Jefgte]

Project A, Byzantine Empire BB8 laid down 1921

Displacement:
   34 000 t light; 36 174 t standard; 38 612 t normal; 40 561 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (670,52 ft / 666,01 ft) x 108,27 ft (Bulges 118,11 ft) x (27,01 / 28,26 ft)
   (204,38 m / 203,00 m) x 33,00 m (Bulges 36,00 m)  x (8,23 / 8,61 m)

Armament:
      12 - 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
     4 x 3-gun mounts on centreline ends, evenly spread
      2 raised mounts - 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, 1921 Model
     10 x Twin mounts on sides, evenly spread
      8 - 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
     8 x Single mounts on side ends, evenly spread
      8 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 24 215 lbs / 10 984 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   24,61 ft / 7,50 m
   Beam between torpedo bulkheads 91,86 ft / 28,00 m

   - Hull Bulges:
      0,98" / 25 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 - multiple decks:
   For and Aft decks: 4,53" / 115 mm
   Forecastle: 1,57" / 40 mm  Quarter deck: 1,57" / 40 mm

   - Conning towers: Forward 13,39" / 340 mm, Aft 5,91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 42 000 shp / 31 332 Kw = 21,09 kts
   Range 12 000nm at 12,00 kts
   Bunker at max displacement = 4 387 tons

Complement:
   1 376 - 1 790

Cost:
   £8,167 million / $32,667 million

Distribution of weights at normal displacement:
   Armament: 3 969 tons, 10,3 %
      - Guns: 3 969 tons, 10,3 %
   Armour: 13 450 tons, 34,8 %
      - Belts: 4 297 tons, 11,1 %
      - Torpedo bulkhead: 776 tons, 2,0 %
      - Bulges: 414 tons, 1,1 %
      - Armament: 3 462 tons, 9,0 %
      - Armour Deck: 4 026 tons, 10,4 %
      - Conning Towers: 475 tons, 1,2 %
   Machinery: 1 446 tons, 3,7 %
   Hull, fittings & equipment: 14 157 tons, 36,7 %
   Fuel, ammunition & stores: 4 612 tons, 11,9 %
   Miscellaneous weights: 977 tons, 2,5 %
      - Hull below water: 170 tons
      - Hull above water: 170 tons
      - On freeboard deck: 174 tons
      - Above deck: 463 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     66 725 lbs / 30 266 Kg = 39,5 x 15,0 " / 381 mm shells or 13,0 torpedoes
   Stability (Unstable if below 1.00): 1,21
   Metacentric height 8,0 ft / 2,4 m
   Roll period: 17,6 seconds
   Steadiness   - As gun platform (Average = 50 %): 74 %
         - Recoil effect (Restricted arc if above 1.00): 0,65
   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 / 0,639
   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): 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:   17,50 %,  25,59 ft / 7,80 m,  22,31 ft / 6,80 m
      - Forward deck:   32,50 %,  22,31 ft / 6,80 m,  19,03 ft / 5,80 m
      - Aft deck:   32,50 %,  19,03 ft / 5,80 m,  19,03 ft / 5,80 m
      - Quarter deck:   17,50 %,  19,03 ft / 5,80 m,  19,03 ft / 5,80 m
      - Average freeboard:      20,37 ft / 6,21 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 67,2 %
      - Above water (accommodation/working, high = better): 149,8 %
   Waterplane Area: 54 532 Square feet or 5 066 Square metres
   Displacement factor (Displacement / loading): 112 %
   Structure weight / hull surface area: 231 lbs/sq ft or 1 128 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,44
      - 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

438t for 1918  Fire Control
25t for Marconi
170t for additionnal pumps
170t for additionnal ventilation
174t reserved...

[Jefgte]

Like other countries, Vilnius & Aztec, Byzantine study Fast Battleships.

AC9, Byzantine Empire AC9 laid down 1921

Displacement:
   34 000 t light; 35 652 t standard; 38 030 t normal; 39 933 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (733,09 ft / 728,35 ft) x 103,35 ft x (30,23 / 31,45 ft)
   (223,45 m / 222,00 m) x 31,50 m  x (9,21 / 9,59 m)

Armament:
      9 - 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, 1921 Model
     3 x 3-gun mounts on centreline ends, majority forward
      1 raised mount - superfiring
      16 - 4,72" / 120 mm 45,0 cal guns - 53,17lbs / 24,12kg shells, 140 per gun
     Breech loading guns in deck and hoist mounts, 1921 Model
     8 x 2-gun 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 sides, evenly spread
      4 raised mounts
      Weight of broadside 15 633 lbs / 7 091 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13,4" / 340 mm   472,44 ft / 144,00 m   10,50 ft / 3,20 m
   Ends:   3,94" / 100 mm   255,91 ft / 78,00 m   8,01 ft / 2,44 m
   Upper:   3,94" / 100 mm   472,44 ft / 144,00 m   13,78 ft / 4,20 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1,97" / 50 mm   472,44 ft / 144,00 m   28,22 ft / 8,60 m
   Beam between torpedo bulkheads 85,30 ft / 26,00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15,0" / 380 mm   4,72" / 120 mm      13,4" / 340 mm
   3rd:   1,97" / 50 mm         -         1,97" / 50 mm
   4th:   0,50" / 13 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 4,33" / 110 mm
   Forecastle: 1,97" / 50 mm  Quarter deck: 1,97" / 50 mm

   - Conning towers: Forward 12,60" / 320 mm, Aft 5,91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 134 000 shp / 99 964 Kw = 29,20 kts
   Range 12 000nm at 12,00 kts
   Bunker at max displacement = 4 280 tons

Complement:
   1 361 - 1 770

Cost:
   £8,149 million / $32,597 million

Distribution of weights at normal displacement:
   Armament: 3 029 tons, 8,0 %
      - Guns: 3 029 tons, 8,0 %
   Armour: 12 259 tons, 32,2 %
      - Belts: 4 260 tons, 11,2 %
      - Torpedo bulkhead: 971 tons, 2,6 %
      - Armament: 2 651 tons, 7,0 %
      - Armour Deck: 3 926 tons, 10,3 %
      - Conning Towers: 451 tons, 1,2 %
   Machinery: 4 614 tons, 12,1 %
   Hull, fittings & equipment: 13 280 tons, 34,9 %
   Fuel, ammunition & stores: 4 031 tons, 10,6 %
   Miscellaneous weights: 818 tons, 2,2 %
      - Hull below water: 170 tons
      - Hull above water: 170 tons
      - On freeboard deck: 150 tons
      - Above deck: 328 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     48 860 lbs / 22 162 Kg = 29,0 x 15,0 " / 381 mm shells or 7,6 torpedoes
   Stability (Unstable if below 1.00): 1,04
   Metacentric height 5,6 ft / 1,7 m
   Roll period: 18,3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,70
   Seaboat quality  (Average = 1.00): 1,03

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,585 / 0,590
   Length to Beam Ratio: 7,05 : 1
   'Natural speed' for length: 26,99 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 68
   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:   17,50 %,  26,90 ft / 8,20 m,  23,62 ft / 7,20 m
      - Forward deck:   30,00 %,  23,62 ft / 7,20 m,  20,34 ft / 6,20 m
      - Aft deck:   35,00 %,  20,34 ft / 6,20 m,  20,34 ft / 6,20 m
      - Quarter deck:   17,50 %,  20,34 ft / 6,20 m,  20,34 ft / 6,20 m
      - Average freeboard:      21,64 ft / 6,59 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 88,9 %
      - Above water (accommodation/working, high = better): 159,4 %
   Waterplane Area: 54 285 Square feet or 5 043 Square metres
   Displacement factor (Displacement / loading): 108 %
   Structure weight / hull surface area: 197 lbs/sq ft or 960 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,97
      - Longitudinal: 1,31
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

170t for extra pumps installations
170t for extra air ventillation
252t for fire control
100t for Admiral staff
25t for Marconi
50t reserved

[Jefgte]

Update 4600t to 4920t
Increase range from 4000 to 5000nm
Increase turrets armor.

C7 ex AGB4600, Byzantine Empire Colonial Cruiser laid down 1922

Displacement:
   4 920 t light; 5 177 t standard; 5 503 t normal; 5 763 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (408,79 ft / 408,79 ft) x 55,12 ft x (17,66 / 18,28 ft)
   (124,60 m / 124,60 m) x 16,80 m  x (5,38 / 5,57 m)

Armament:
      6 - 7,52" / 191 mm 45,0 cal guns - 214,42lbs / 97,26kg shells, 150 per gun
     Breech loading guns in turret on barbette mounts, 1922 Model
     2 x 3-gun mounts on centreline ends, evenly spread
      6 - 4,72" / 120 mm 45,0 cal guns - 53,17lbs / 24,12kg shells, 180 per gun
     Quick firing guns in deck and hoist mounts, 1922 Model
     6 x Single mounts on sides, evenly spread
      2 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 300 per gun
     Anti-air guns in deck mounts, 1922 Model
     2 x Single mounts on sides, aft deck centre
      2 raised mounts
      2 - 1,85" / 47,0 mm 45,0 cal guns - 3,19lbs / 1,45kg shells, 1 000 per gun
     Quick firing guns in deck mounts, 1922 Model
     2 x Single mounts on sides amidships
      4 - 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
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 1 639 lbs / 744 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,94" / 100 mm   265,75 ft / 81,00 m   8,86 ft / 2,70 m
   Ends:   1,38" / 35 mm   143,04 ft / 43,60 m   7,87 ft / 2,40 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5,91" / 150 mm   1,57" / 40 mm      3,94" / 100 mm
   2nd:   0,39" / 10 mm         -               -
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 1,38" / 35 mm
   Forecastle: 0,98" / 25 mm  Quarter deck: 0,98" / 25 mm

   - Conning towers: Forward 3,54" / 90 mm, Aft 2,76" / 70 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 35 500 shp / 26 483 Kw = 27,00 kts
   Range 5 000nm at 12,00 kts
   Bunker at max displacement = 586 tons (25% coal)

Complement:
   319 - 415

Cost:
   £1,358 million / $5,431 million

Distribution of weights at normal displacement:
   Armament: 455 tons, 8,3 %
      - Guns: 455 tons, 8,3 %
   Armour: 1 039 tons, 18,9 %
      - Belts: 450 tons, 8,2 %
      - Armament: 188 tons, 3,4 %
      - Armour Deck: 359 tons, 6,5 %
      - Conning Towers: 42 tons, 0,8 %
   Machinery: 1 232 tons, 22,4 %
   Hull, fittings & equipment: 2 011 tons, 36,5 %
   Fuel, ammunition & stores: 583 tons, 10,6 %
   Miscellaneous weights: 182 tons, 3,3 %
      - Hull below water: 25 tons
      - Hull above water: 25 tons
      - On freeboard deck: 64 tons
      - Above deck: 68 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     6 351 lbs / 2 881 Kg = 29,9 x 7,5 " / 191 mm shells or 1,2 torpedoes
   Stability (Unstable if below 1.00): 1,03
   Metacentric height 2,2 ft / 0,7 m
   Roll period: 15,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,64
   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): 0,484 / 0,490
   Length to Beam Ratio: 7,42 : 1
   'Natural speed' for length: 20,22 kts
   Power going to wave formation at top speed: 60 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   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 %,  22,31 ft / 6,80 m,  19,03 ft / 5,80 m
      - Forward deck:   32,50 %,  19,03 ft / 5,80 m,  15,75 ft / 4,80 m
      - Aft deck:   32,50 %,  15,75 ft / 4,80 m,  15,75 ft / 4,80 m
      - Quarter deck:   17,50 %,  15,75 ft / 4,80 m,  15,75 ft / 4,80 m
      - Average freeboard:      17,08 ft / 5,21 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 100,0 %
      - Above water (accommodation/working, high = better): 146,4 %
   Waterplane Area: 14 798 Square feet or 1 375 Square metres
   Displacement factor (Displacement / loading): 107 %
   Structure weight / hull surface area: 98 lbs/sq ft or 481 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,92
      - Longitudinal: 2,19
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

43t for top fire control
25t for Marconi
25t for additionnal pumps
25t for additionnal ventilation
24t for 6TT x 21" HW
40t reserved

[The Rock Doctor]

The numbers look good but I'm skeptical about a triple 190mm on that hull.

[Kaiser Kirk]

It's the old 'how to evaluate BC' problem again.
The ship has the same beam, but is 1/3 longer than Vanamoinian
which had 2 T2 254...much heavier mounts

Jefgtes  actually has a larger displacement.
Plus with 2 T3, they can be in "B" and "Y" where the beam is larger
so the hull girder better.

[Jefgte]

- I am looking for an economical 27kts -125m colonial cruiser.

- I could test 2T2x234.

- I don't like the 4920t, I prefer the 4600t.

- Or built more C7 - 5500t cruiser (?)

[Jefgte]

This one is well balanced, not too expensive for a colonial cruiser.
125m shipyards - 4830t - 2T3x191+6x120 - 27kts - B100-T140 - 4800nm@12kts

C7 ex AGB4600, Byzantine Empire Colonial Cruiser laid down 1922

Displacement:
   4 830 t light; 5 086 t standard; 5 396 t normal; 5 644 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (408,79 ft / 408,79 ft) x 54,49 ft x (17,52 / 18,11 ft)
   (124,60 m / 124,60 m) x 16,61 m  x (5,34 / 5,52 m)

Armament:
      6 - 7,52" / 191 mm 45,0 cal guns - 214,42lbs / 97,26kg shells, 150 per gun
     Breech loading guns in turret on barbette mounts, 1922 Model
     2 x 3-gun mounts on centreline ends, evenly spread
      6 - 4,72" / 120 mm 45,0 cal guns - 53,17lbs / 24,12kg shells, 170 per gun
     Quick firing guns in deck and hoist mounts, 1922 Model
     6 x Single mounts on sides, evenly spread
      2 - 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
     2 x Single mounts on sides, forward deck aft
      2 raised mounts
      4 - 1,85" / 47,0 mm 45,0 cal guns - 3,19lbs / 1,45kg shells, 1 000 per gun
     Quick firing guns in deck mounts, 1922 Model
     4 x Single mounts on sides, evenly spread
      4 - 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
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 1 646 lbs / 746 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,94" / 100 mm   269,03 ft / 82,00 m   8,53 ft / 2,60 m
   Ends:   1,38" / 35 mm   139,44 ft / 42,50 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:   5,51" / 140 mm   1,57" / 40 mm      3,94" / 100 mm
   2nd:   0,39" / 10 mm         -               -
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 1,38" / 35 mm
   Forecastle: 0,98" / 25 mm  Quarter deck: 0,98" / 25 mm

   - Conning towers: Forward 3,94" / 100 mm, Aft 2,36" / 60 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 35 000 shp / 26 110 Kw = 27,00 kts
   Range 4 800nm at 12,00 kts
   Bunker at max displacement = 558 tons (25% coal)
    => With Coal boilers, 8 750 shp / 6 527 Kw = 18,97 kts

Complement:
   314 - 409

Cost:
   £1,344 million / $5,374 million

Distribution of weights at normal displacement:
   Armament: 457 tons, 8,5 %
      - Guns: 457 tons, 8,5 %
   Armour: 1 023 tons, 19,0 %
      - Belts: 437 tons, 8,1 %
      - Armament: 188 tons, 3,5 %
      - Armour Deck: 355 tons, 6,6 %
      - Conning Towers: 42 tons, 0,8 %
   Machinery: 1 215 tons, 22,5 %
   Hull, fittings & equipment: 1 975 tons, 36,6 %
   Fuel, ammunition & stores: 566 tons, 10,5 %
   Miscellaneous weights: 161 tons, 3,0 %
      - Hull below water: 24 tons
      - Hull above water: 24 tons
      - On freeboard deck: 52 tons
      - Above deck: 61 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     6 095 lbs / 2 765 Kg = 28,7 x 7,5 " / 191 mm shells or 1,2 torpedoes
   Stability (Unstable if below 1.00): 1,02
   Metacentric height 2,1 ft / 0,6 m
   Roll period: 15,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,68
   Seaboat quality  (Average = 1.00): 1,02

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,484 / 0,490
   Length to Beam Ratio: 7,50 : 1
   'Natural speed' for length: 20,22 kts
   Power going to wave formation at top speed: 60 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   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 %,  22,31 ft / 6,80 m,  19,03 ft / 5,80 m
      - Forward deck:   32,50 %,  19,03 ft / 5,80 m,  15,75 ft / 4,80 m
      - Aft deck:   32,50 %,  15,75 ft / 4,80 m,  15,75 ft / 4,80 m
      - Quarter deck:   17,50 %,  15,75 ft / 4,80 m,  15,75 ft / 4,80 m
      - Average freeboard:      17,08 ft / 5,21 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 100,9 %
      - Above water (accommodation/working, high = better): 147,0 %
   Waterplane Area: 14 630 Square feet or 1 359 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 98 lbs/sq ft or 477 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,91
      - Longitudinal: 2,17
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

46t for top fire control
25t for Marconi
24t for 2x3TT x 21" HW
24t for additionnal pumps
24t for additionnal ventilation
28t reserved

[Jefgte]

This one with 2T2x234 for the fun.

C7 ex AGB4600, Byzantine Empire Colonial Cruiser laid down 1922

Displacement:
   4 960 t light; 5 243 t standard; 5 559 t normal; 5 811 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (408,79 ft / 408,79 ft) x 54,49 ft x (18,04 / 18,65 ft)
   (124,60 m / 124,60 m) x 16,61 m  x (5,50 / 5,68 m)

Armament:
      4 - 9,21" / 234 mm 45,0 cal guns - 394,28lbs / 178,84kg shells, 150 per gun
     Breech loading guns in turret on barbette mounts, 1922 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      6 - 4,72" / 120 mm 45,0 cal guns - 53,18lbs / 24,12kg shells, 170 per gun
     Quick firing guns in deck and hoist mounts, 1922 Model
     6 x Single mounts on sides, evenly spread
      2 - 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
     2 x Single mounts on sides, forward deck aft
      2 raised mounts
      4 - 1,85" / 47,0 mm 45,0 cal guns - 3,20lbs / 1,45kg shells, 1 000 per gun
     Quick firing guns in deck mounts, 1922 Model
     4 x Single mounts on sides, evenly spread
      4 - 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
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 1 936 lbs / 878 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4,72" / 120 mm   265,75 ft / 81,00 m   9,19 ft / 2,80 m
   Ends:   1,38" / 35 mm   142,72 ft / 43,50 m   7,87 ft / 2,40 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5,51" / 140 mm   1,57" / 40 mm      3,94" / 100 mm
   2nd:   0,39" / 10 mm         -               -
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 1,38" / 35 mm
   Forecastle: 0,98" / 25 mm  Quarter deck: 0,98" / 25 mm

   - Conning towers: Forward 3,94" / 100 mm, Aft 2,36" / 60 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 32 000 shp / 23 872 Kw = 26,30 kts
   Range 4 800nm at 12,00 kts
   Bunker at max displacement = 568 tons (25% coal)

Complement:
   321 - 418

Cost:
   £1,389 million / $5,557 million

Distribution of weights at normal displacement:
   Armament: 534 tons, 9,6 %
      - Guns: 534 tons, 9,6 %
   Armour: 1 130 tons, 20,3 %
      - Belts: 545 tons, 9,8 %
      - Armament: 187 tons, 3,4 %
      - Armour Deck: 355 tons, 6,4 %
      - Conning Towers: 43 tons, 0,8 %
   Machinery: 1 111 tons, 20,0 %
   Hull, fittings & equipment: 2 001 tons, 36,0 %
   Fuel, ammunition & stores: 599 tons, 10,8 %
   Miscellaneous weights: 184 tons, 3,3 %
      - Hull below water: 24 tons
      - Hull above water: 24 tons
      - On freeboard deck: 58 tons
      - Above deck: 78 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     6 392 lbs / 2 899 Kg = 16,4 x 9,2 " / 234 mm shells or 1,3 torpedoes
   Stability (Unstable if below 1.00): 1,02
   Metacentric height 2,1 ft / 0,6 m
   Roll period: 15,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,77
   Seaboat quality  (Average = 1.00): 1,04

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,484 / 0,490
   Length to Beam Ratio: 7,50 : 1
   'Natural speed' for length: 20,22 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   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 %,  21,78 ft / 6,64 m,  18,50 ft / 5,64 m
      - Forward deck:   32,50 %,  18,50 ft / 5,64 m,  15,22 ft / 4,64 m
      - Aft deck:   32,50 %,  15,22 ft / 4,64 m,  15,22 ft / 4,64 m
      - Quarter deck:   17,50 %,  15,22 ft / 4,64 m,  15,22 ft / 4,64 m
      - Average freeboard:      16,56 ft / 5,05 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 96,4 %
      - Above water (accommodation/working, high = better): 139,3 %
   Waterplane Area: 14 630 Square feet or 1 359 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 101 lbs/sq ft or 493 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,91
      - Longitudinal: 2,18
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

46t for top fire control
25t for Marconi
24t for 2x3TT x 21" HW
24t for additionnal pumps
24t for additionnal ventilation
34t reserved

[Jefgte]

In 1922, T3x254 is dispo.

I test an AGB7000 for coastal defense in 125m shipyards.

AGB 7000, Byzantine Empire Armored Gunboat laid down 1922

Displacement:
   7 000 t light; 7 422 t standard; 7 732 t normal; 7 979 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (408,79 ft / 408,79 ft) x 65,62 ft x (19,22 / 19,69 ft)
   (124,60 m / 124,60 m) x 20,00 m  x (5,86 / 6,00 m)

Armament:
      6 - 10,00" / 254 mm 45,0 cal guns - 504,26lbs / 228,73kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1922 Model
     2 x 3-gun mounts on centreline ends, evenly spread
      8 - 4,72" / 120 mm 45,0 cal guns - 53,17lbs / 24,12kg shells, 250 per gun
     Breech loading guns in deck and hoist mounts, 1922 Model
     4 x 2-gun mounts on sides, evenly spread
      2 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 400 per gun
     Anti-air guns in deck mounts, 1922 Model
     2 x Single mounts on sides, aft deck centre
      2 raised mounts
      4 - 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
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 3 478 lbs / 1 578 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7,87" / 200 mm   269,03 ft / 82,00 m   8,53 ft / 2,60 m
   Ends:   1,97" / 50 mm   137,80 ft / 42,00 m   7,87 ft / 2,40 m
     1,97 ft / 0,60 m Unarmoured ends
     Main Belt covers 101 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
      1,18" / 30 mm   269,03 ft / 82,00 m   16,40 ft / 5,00 m
   Beam between torpedo bulkheads 52,49 ft / 16,00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   8,66" / 220 mm   2,36" / 60 mm      6,30" / 160 mm
   2nd:   0,79" / 20 mm         -         1,57" / 40 mm
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 2,95" / 75 mm
   Forecastle: 1,18" / 30 mm  Quarter deck: 1,18" / 30 mm

   - Conning towers: Forward 7,09" / 180 mm, Aft 1,97" / 50 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 28 000 shp / 20 888 Kw = 23,91 kts
   Range 4 000nm at 12,00 kts
   Bunker at max displacement = 558 tons

Complement:
   411 - 535

Cost:
   £1,917 million / $7,669 million

Distribution of weights at normal displacement:
   Armament: 960 tons, 12,4 %
      - Guns: 960 tons, 12,4 %
   Armour: 2 394 tons, 31,0 %
      - Belts: 863 tons, 11,2 %
      - Torpedo bulkhead: 193 tons, 2,5 %
      - Armament: 375 tons, 4,8 %
      - Armour Deck: 886 tons, 11,5 %
      - Conning Towers: 76 tons, 1,0 %
   Machinery: 950 tons, 12,3 %
   Hull, fittings & equipment: 2 457 tons, 31,8 %
   Fuel, ammunition & stores: 731 tons, 9,5 %
   Miscellaneous weights: 239 tons, 3,1 %
      - Hull below water: 35 tons
      - Hull above water: 35 tons
      - On freeboard deck: 48 tons
      - Above deck: 121 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     10 326 lbs / 4 684 Kg = 20,7 x 10,0 " / 254 mm shells or 2,2 torpedoes
   Stability (Unstable if below 1.00): 1,09
   Metacentric height 3,1 ft / 1,0 m
   Roll period: 15,6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,65
   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): 0,525 / 0,529
   Length to Beam Ratio: 6,23 : 1
   'Natural speed' for length: 20,22 kts
   Power going to wave formation at top speed: 58 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   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 %,  19,69 ft / 6,00 m,  17,06 ft / 5,20 m
      - Forward deck:   32,00 %,  17,06 ft / 5,20 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:   18,50 %,  15,09 ft / 4,60 m,  15,09 ft / 4,60 m
      - Average freeboard:      15,94 ft / 4,86 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 100,1 %
      - Above water (accommodation/working, high = better): 132,1 %
   Waterplane Area: 18 288 Square feet or 1 699 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 123 lbs/sq ft or 600 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,92
      - Longitudinal: 2,14
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

96t for top fire control
25t for Marconi
18t for 6TTx21"
35t for additionnal ventilation
35t for additionnal pumps
30 t reserved

[Kaiser Kirk]

at 16m for the TDS, there are only 2m interior bulges on each side.
Depth from side effects how much energy hits the armored holding bulkhead.
A single 30mm holding bulkhead is likely to prove weak at that distance.
There is still value, and it should work against at least light torpedoes.

I have tried several versions of a similar vessel and get similar results.
I need the draft to be 5.5m or less so they can base out of Khasab, and interdict
the straits of Hormuz. I also want them to base in rivers and shallows
at Palembang, Medan, Orinoco, etc.
They will replace the now-scrapped 'Gatekeeper' and 'Keymaster'.

How much speed they need for that role,
and if a torpedo bulkhead is worthwhile, are two questions.
I forsee such ships as being targets for enemy torpedo craft,
which will have the draft needed to attack them.