Byzantine Empire 1918-1922

Jefgte · December 03, 2021, 01:09:12 AM

Powerfull for the size & economic
She is now C7 class
=>I increase range to 6000nm@12kts

C7, Byzantine Empire Colonial Cruiser laid down 1920

Displacement:
   4 650 t light; 4 873 t standard; 5 256 t normal; 5 561 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (408,72 ft / 406,82 ft) x 51,84 ft x (18,02 / 18,79 ft)
   (124,58 m / 124,00 m) x 15,80 m x (5,49 / 5,73 m)

Armament:
6 - 7,52" / 191 mm 45,0 cal guns - 214,42lbs / 97,26kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1920 Model
     2 x Triple mounts on centreline ends, evenly spread
6 - 4,72" / 120 mm 45,0 cal guns - 53,18lbs / 24,12kg shells, 120 per gun
     Quick firing guns in deck mounts, 1920 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, 1920 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, 1920 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, 1920 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   275,59 ft / 84,00 m   9,84 ft / 3,00 m
   Ends:   1,38" / 35 mm   127,95 ft / 39,00 m   7,87 ft / 2,40 m
     3,28 ft / 1,00 m Unarmoured ends
     Main Belt covers 104 % of normal length

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   4,72" / 120 mm   0,79" / 20 mm      2,56" / 65 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, 2 shafts, 35 000 shp / 26 110 Kw = 27,14 kts
   Range 6 000nm at 12,00 kts
   Bunker at max displacement = 688 tons (25% coal)

Complement:
   308 - 401

Cost:
   £1,126 million / $4,503 million

Distribution of weights at normal displacement:
   Armament: 354 tons, 6,7 %
     - Guns: 354 tons, 6,7 %
   Armour: 991 tons, 18,9 %
     - Belts: 495 tons, 9,4 %
     - Armament: 118 tons, 2,3 %
     - Armour Deck: 336 tons, 6,4 %
     - Conning Towers: 41 tons, 0,8 %
   Machinery: 1 252 tons, 23,8 %
   Hull, fittings & equipment: 1 882 tons, 35,8 %
   Fuel, ammunition & stores: 605 tons, 11,5 %
   Miscellaneous weights: 171 tons, 3,3 %
     - Hull below water: 23 tons
     - Hull above water: 23 tons
     - On freeboard deck: 64 tons
     - Above deck: 61 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     5 562 lbs / 2 523 Kg = 26,2 x 7,5 " / 191 mm shells or 1,1 torpedoes
   Stability (Unstable if below 1.00): 1,05
   Metacentric height 2,0 ft / 0,6 m
   Roll period: 15,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,69
   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 / 0,491
   Length to Beam Ratio: 7,85 : 1
   'Natural speed' for length: 20,17 kts
   Power going to wave formation at top speed: 60 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   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 %, 21,65 ft / 6,60 m, 18,37 ft / 5,60 m
     - Forward deck:   32,50 %, 18,37 ft / 5,60 m, 15,09 ft / 4,60 m
     - Aft deck:   32,50 %, 15,09 ft / 4,60 m, 15,09 ft / 4,60 m
     - Quarter deck:   17,50 %, 15,09 ft / 4,60 m, 15,09 ft / 4,60 m
     - Average freeboard:      16,43 ft / 5,01 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 102,8 %
      - Above water (accommodation/working, high = better): 136,3 %
   Waterplane Area: 13 850 Square feet or 1 287 Square metres
   Displacement factor (Displacement / loading): 105 %
   Structure weight / hull surface area: 93 lbs/sq ft or 454 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,91
      - 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

24t for 6 TT x 21'' HW
36t for top fire control
25t for Marconi
23t for additionnal pumps
23t for additionnal ventilation
40t reserved

Jefgte · December 04, 2021, 09:55:19 AM

4650t - 27kts - 125m shipyards
5900t - 29.9kts - 175m shipyards
=>5800t - 29.2kts - 150m shipyards.

C7, Byzantine Empire Colonial Cruiser laid down 1920

Displacement:
   5 800 t light; 6 062 t standard; 6 651 t normal; 7 122 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (490,74 ft / 488,85 ft) x 52,49 ft x (18,36 / 19,33 ft)
   (149,58 m / 149,00 m) x 16,00 m x (5,60 / 5,89 m)

Armament:
6 - 7,52" / 191 mm 45,0 cal guns - 214,42lbs / 97,26kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1920 Model
     2 x Triple mounts on centreline ends, evenly spread
6 - 4,72" / 120 mm 45,0 cal guns - 53,18lbs / 24,12kg shells, 180 per gun
     Quick firing guns in deck mounts, 1920 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, 1920 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, 1920 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, 1920 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   341,21 ft / 104,00 m   9,84 ft / 3,00 m
   Ends:   1,38" / 35 mm   127,95 ft / 39,00 m   7,87 ft / 2,40 m
     19,69 ft / 6,00 m Unarmoured ends
     Main Belt covers 107 % of normal length

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   4,72" / 120 mm   0,79" / 20 mm      2,56" / 65 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, 2 shafts, 49 400 shp / 36 852 Kw = 29,21 kts
   Range 8 000nm at 12,00 kts
   Bunker at max displacement = 1 060 tons (25% coal)

Complement:
   367 - 478

Cost:
   £1,391 million / $5,566 million

Distribution of weights at normal displacement:
   Armament: 354 tons, 5,3 %
     - Guns: 354 tons, 5,3 %
   Armour: 1 170 tons, 17,6 %
     - Belts: 591 tons, 8,9 %
     - Armament: 118 tons, 1,8 %
     - Armour Deck: 413 tons, 6,2 %
     - Conning Towers: 48 tons, 0,7 %
   Machinery: 1 767 tons, 26,6 %
   Hull, fittings & equipment: 2 348 tons, 35,3 %
   Fuel, ammunition & stores: 851 tons, 12,8 %
   Miscellaneous weights: 161 tons, 2,4 %
     - Hull below water: 24 tons
     - Hull above water: 24 tons
     - On freeboard deck: 53 tons
     - Above deck: 60 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     6 481 lbs / 2 940 Kg = 30,5 x 7,5 " / 191 mm shells or 1,1 torpedoes
   Stability (Unstable if below 1.00): 1,06
   Metacentric height 2,1 ft / 0,6 m
   Roll period: 15,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,61
   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): 0,494 / 0,502
   Length to Beam Ratio: 9,31 : 1
   'Natural speed' for length: 22,11 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   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 %, 21,65 ft / 6,60 m, 18,37 ft / 5,60 m
     - Forward deck:   32,50 %, 18,37 ft / 5,60 m, 15,09 ft / 4,60 m
     - Aft deck:   32,50 %, 15,09 ft / 4,60 m, 15,09 ft / 4,60 m
     - Quarter deck:   17,50 %, 15,09 ft / 4,60 m, 15,09 ft / 4,60 m
     - Average freeboard:      16,43 ft / 5,01 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 106,6 %
      - Above water (accommodation/working, high = better): 140,4 %
   Waterplane Area: 17 005 Square feet or 1 580 Square metres
   Displacement factor (Displacement / loading): 108 %
   Structure weight / hull surface area: 93 lbs/sq ft or 455 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,49
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

24t for 6 TT x 21'' HW
35t for top fire control
25t for Marconi
24t for additionnal pumps
24t for additionnal ventilation
30t reserved

Jefgte · December 06, 2021, 10:41:28 AM

The C7 class is intended to replace the old Byzantine 21kts cruisers.
12 x C7 class cruisers were planned from 1920 to 1923.

8 x 3950t cruisers deemed too weak (6x152) will be scrapped first. They will be followed by the 4 x AGB 5850 (2T2x191).
Atokos 8700t class, more powerful (10x191), will be replaced by a C8 class to be defined.
----------------------------------------------------------------------
5800t => 5900t I increase Main turrets armor to 140mm & barbettes to 100mm.
5900t => 6000t I increase Misc Weight for 60 minen.

C7, Byzantine Empire Colonial Cruiser laid down 1920

Displacement:
   6 000 t light; 6 266 t standard; 6 866 t normal; 7 346 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (490,75 ft / 488,85 ft) x 52,49 ft x (18,96 / 19,94 ft)
   (149,58 m / 149,00 m) x 16,00 m x (5,78 / 6,08 m)

Armament:
6 - 7,52" / 191 mm 45,0 cal guns - 214,42lbs / 97,26kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1920 Model
     2 x Triple mounts on centreline ends, evenly spread
6 - 4,72" / 120 mm 45,0 cal guns - 53,18lbs / 24,12kg shells, 180 per gun
     Quick firing guns in deck mounts, 1920 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, 1920 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, 1920 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, 1920 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   337,93 ft / 103,00 m   9,84 ft / 3,00 m
   Ends:   1,38" / 35 mm   147,64 ft / 45,00 m   7,87 ft / 2,40 m
     3,28 ft / 1,00 m Unarmoured ends
     Main Belt covers 106 % of normal length

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5,51" / 140 mm   1,38" / 35 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, 50 250 shp / 37 486 Kw = 29,19 kts
   Range 8 000nm at 12,00 kts
   Bunker at max displacement = 1 080 tons (25% coal)

Complement:
   376 - 490

Cost:
   £1,418 million / $5,672 million

Distribution of weights at normal displacement:
   Armament: 354 tons, 5,1 %
     - Guns: 354 tons, 5,1 %
   Armour: 1 229 tons, 17,9 %
     - Belts: 593 tons, 8,6 %
     - Armament: 174 tons, 2,5 %
     - Armour Deck: 413 tons, 6,0 %
     - Conning Towers: 49 tons, 0,7 %
   Machinery: 1 798 tons, 26,2 %
   Hull, fittings & equipment: 2 397 tons, 34,9 %
   Fuel, ammunition & stores: 866 tons, 12,6 %
   Miscellaneous weights: 222 tons, 3,2 %
     - Hull below water: 24 tons
     - Hull above water: 24 tons
     - On freeboard deck: 114 tons
     - Above deck: 60 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     6 743 lbs / 3 059 Kg = 31,7 x 7,5 " / 191 mm shells or 1,2 torpedoes
   Stability (Unstable if below 1.00): 1,03
   Metacentric height 2,0 ft / 0,6 m
   Roll period: 15,6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,63
   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): 0,494 / 0,502
   Length to Beam Ratio: 9,31 : 1
   'Natural speed' for length: 22,11 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   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 %, 21,82 ft / 6,65 m, 18,54 ft / 5,65 m
     - Forward deck:   32,50 %, 18,54 ft / 5,65 m, 15,26 ft / 4,65 m
     - Aft deck:   32,50 %, 15,26 ft / 4,65 m, 15,26 ft / 4,65 m
     - Quarter deck:   17,50 %, 15,26 ft / 4,65 m, 15,26 ft / 4,65 m
     - Average freeboard:      16,59 ft / 5,06 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 104,8 %
      - Above water (accommodation/working, high = better): 138,5 %
   Waterplane Area: 17 005 Square feet or 1 580 Square metres
   Displacement factor (Displacement / loading): 108 %
   Structure weight / hull surface area: 94 lbs/sq ft or 459 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,52
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

24t for 6 TT x 21'' HW
35t for top fire control
25t for Marconi
24t for additionnal pumps
24t for additionnal ventilation
60t for 60 minen
30t reserved

Jefgte · December 10, 2021, 05:32:53 PM

A possible AGB (2nd class cruiser) made to work in Red Sea & Aden Gulf

Djeddah, Byzantine Empire Armored Gun Boat laid down 1922

Displacement:
   3 700 t light; 3 881 t standard; 3 994 t normal; 4 085 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (406,82 ft / 406,82 ft) x 47,90 ft x (14,95 / 15,19 ft)
   (124,00 m / 124,00 m) x 14,60 m x (4,56 / 4,63 m)

Armament:
4 - 7,50" / 191 mm 45,0 cal guns - 212,74lbs / 96,50kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1922 Model
     2 x Twin mounts on centreline ends, evenly spread
6 - 4,72" / 120 mm 45,0 cal guns - 53,17lbs / 24,12kg shells, 200 per gun
     Quick firing guns in deck mounts, 1922 Model
     6 x Single mounts on sides, evenly spread
1 - 3,00" / 76,2 mm 45,0 cal gun - 13,62lbs / 6,18kg shells, 300 per gun
     Anti-air gun in deck mount, 1922 Model
     1 x Single mount on centreline, forward deck aft
      1 raised mount
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, forward deck aft
      4 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
Weight of broadside 1 196 lbs / 543 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,94" / 100 mm   275,59 ft / 84,00 m   9,84 ft / 3,00 m
   Ends:   1,18" / 30 mm   127,95 ft / 39,00 m   8,01 ft / 2,44 m
     3,28 ft / 1,00 m Unarmoured ends
     Main Belt covers 104 % of normal length

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   4,72" / 120 mm   1,18" / 30 mm      3,15" / 80 mm
   2nd:   0,39" / 10 mm     -           -
   3rd:   0,39" / 10 mm     -           -
   4th:   0,39" / 10 mm     -           -

- Armoured deck - multiple decks:
   For and Aft decks: 1,18" / 30 mm
   Forecastle: 0,79" / 20 mm Quarter deck: 0,79" / 20 mm

- Conning towers: Forward 3,94" / 100 mm, Aft 0,00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 29 000 shp / 21 634 Kw = 27,11 kts
   Range 3 000nm at 10,00 kts
   Bunker at max displacement = 203 tons

Complement:
   250 - 326

Cost:
   £0,992 million / $3,970 million

Distribution of weights at normal displacement:
   Armament: 253 tons, 6,3 %
     - Guns: 253 tons, 6,3 %
   Armour: 879 tons, 22,0 %
     - Belts: 486 tons, 12,2 %
     - Armament: 107 tons, 2,7 %
     - Armour Deck: 264 tons, 6,6 %
     - Conning Tower: 21 tons, 0,5 %
   Machinery: 984 tons, 24,6 %
   Hull, fittings & equipment: 1 530 tons, 38,3 %
   Fuel, ammunition & stores: 294 tons, 7,4 %
   Miscellaneous weights: 55 tons, 1,4 %
     - On freeboard deck: 30 tons
     - Above deck: 25 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4 407 lbs / 1 999 Kg = 20,9 x 7,5 " / 191 mm shells or 1,0 torpedoes
   Stability (Unstable if below 1.00): 1,05
   Metacentric height 1,8 ft / 0,6 m
   Roll period: 14,9 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,62
   Seaboat quality (Average = 1.00): 1,00

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,480 / 0,483
   Length to Beam Ratio: 8,49 : 1
   'Natural speed' for length: 20,17 kts
   Power going to wave formation at top speed: 58 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 0,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   18,00 %, 20,01 ft / 6,10 m, 16,73 ft / 5,10 m
     - Forward deck:   33,00 %, 16,73 ft / 5,10 m, 13,45 ft / 4,10 m
     - Aft deck:   33,00 %, 13,45 ft / 4,10 m, 13,45 ft / 4,10 m
     - Quarter deck:   16,00 %, 13,45 ft / 4,10 m, 13,45 ft / 4,10 m
     - Average freeboard:      14,82 ft / 4,52 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 103,1 %
      - Above water (accommodation/working, high = better): 138,7 %
   Waterplane Area: 12 753 Square feet or 1 185 Square metres
   Displacement factor (Displacement / loading): 105 %
   Structure weight / hull surface area: 84 lbs/sq ft or 410 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,94
      - Longitudinal: 1,69
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

25t for top mast rangefinder
(10t for Marconi)
12t for 2x2TTx533
6t for forced ventilation
12t reserved for new material, armament

TacCovert4 · December 10, 2021, 07:08:25 PM

I'm just a bit ambivalent about a pre-dread gun layout on a cruiser being built in the 20s. It's hurting its entire fire control setup at that point, though I see that it's for a very limited mission.

The Rock Doctor · December 11, 2021, 09:18:48 AM

It's kind of "neither fish nor fowl" for me. Faster than I expect a gunboat/patrol unit to be, but under-armed for a cruiser.

Jefgte · December 11, 2021, 04:20:04 PM

Class intended to support destroyers, torpedo boats & MTBs in the Red Sea and Aden Gulf.

=> Economical C7 class - 6000t

AGB4600, Byzantine Empire Armored Gunboat laid down 1920

Displacement:
   4 600 t light; 4 819 t standard; 5 074 t normal; 5 277 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (408,72 ft / 406,82 ft) x 51,84 ft x (17,40 / 17,91 ft)
   (124,58 m / 124,00 m) x 15,80 m x (5,30 / 5,46 m)

Armament:
6 - 7,52" / 191 mm 45,0 cal guns - 214,42lbs / 97,26kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1920 Model
     2 x Triple mounts on centreline ends, evenly spread
6 - 4,72" / 120 mm 45,0 cal guns - 53,18lbs / 24,12kg shells, 120 per gun
     Quick firing guns in deck mounts, 1920 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, 1920 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, 1920 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, 1920 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   275,59 ft / 84,00 m   9,84 ft / 3,00 m
   Ends:   1,38" / 35 mm   127,95 ft / 39,00 m   7,87 ft / 2,40 m
     3,28 ft / 1,00 m Unarmoured ends
     Main Belt covers 104 % of normal length

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   4,72" / 120 mm   0,79" / 20 mm      2,56" / 65 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, 2 shafts, 34 000 shp / 25 364 Kw = 27,09 kts
   Range 4 000nm at 12,00 kts
   Bunker at max displacement = 458 tons (20% coal)

Complement:
   299 - 390

Cost:
   £1,108 million / $4,432 million

Distribution of weights at normal displacement:
   Armament: 354 tons, 7,0 %
     - Guns: 354 tons, 7,0 %
   Armour: 990 tons, 19,5 %
     - Belts: 495 tons, 9,8 %
     - Armament: 118 tons, 2,3 %
     - Armour Deck: 336 tons, 6,6 %
     - Conning Towers: 40 tons, 0,8 %
   Machinery: 1 211 tons, 23,9 %
   Hull, fittings & equipment: 1 874 tons, 36,9 %
   Fuel, ammunition & stores: 474 tons, 9,3 %
   Miscellaneous weights: 171 tons, 3,4 %
     - Hull below water: 23 tons
     - Hull above water: 23 tons
     - On freeboard deck: 64 tons
     - Above deck: 61 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     5 363 lbs / 2 433 Kg = 25,2 x 7,5 " / 191 mm shells or 1,1 torpedoes
   Stability (Unstable if below 1.00): 1,04
   Metacentric height 2,0 ft / 0,6 m
   Roll period: 15,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,71
   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 / 0,489
   Length to Beam Ratio: 7,85 : 1
   'Natural speed' for length: 20,17 kts
   Power going to wave formation at top speed: 60 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   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 %, 21,65 ft / 6,60 m, 18,37 ft / 5,60 m
     - Forward deck:   32,50 %, 18,37 ft / 5,60 m, 15,09 ft / 4,60 m
     - Aft deck:   32,50 %, 15,09 ft / 4,60 m, 15,09 ft / 4,60 m
     - Quarter deck:   17,50 %, 15,09 ft / 4,60 m, 15,09 ft / 4,60 m
     - Average freeboard:      16,43 ft / 5,01 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 103,8 %
      - Above water (accommodation/working, high = better): 140,4 %
   Waterplane Area: 13 850 Square feet or 1 287 Square metres
   Displacement factor (Displacement / loading): 104 %
   Structure weight / hull surface area: 93 lbs/sq ft or 456 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,92
      - Longitudinal: 2,12
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

24t for 6 TT x 21'' HW
36t for top fire control
25t for Marconi
23t for additionnal pumps
23t for additionnal ventilation
40t reserved

TacCovert4 · December 12, 2021, 10:22:56 AM

I know it's heavier, but I like it more. As always, comparing it with my own ships, it would be a serious threat to my Jaguar class cruisers, and would give my weapon class a hard fight. Overall I think this is your winner there.

Kaiser Kirk · December 12, 2021, 12:58:05 PM

Quote from: TacCovert4 on December 10, 2021, 07:08:25 PM
I'm just a bit ambivalent about a pre-dread gun layout on a cruiser being built in the 20s. It's hurting its entire fire control setup at that point, though I see that it's for a very limited mission.

I think one needs to consider the ROF available to lighter weapons.
You see mixed large/small guns on both British and French cruisers well after all-big-gun was adopted.

From my readings, the desire was to maintain a 4 shell splash ladder.
Optimally 2 short, 1 on, 1 over.
The overs were hard to see, the unders easy. and having the 'hit' be the #2 or #3 shell meant easy adjustment of the bracket. Then minimum was 3, desired as 2 unders, 1 on - sacrificing that harder to see over ... or under/on/over. But not as effective or flexible as 4 guns, and subject to feed issues delaying volleys.

This supposedly influenced the 10 gun large caliber ships, with the ability to fire 2 x 5 gun salvos. That 5th shell was ostensibly for 'slack' if there was a loading sequence issues and one gun could not fire on sequence.
With the Queen Elizabeths the RN decided those did not occur enough for that 5th turret to be critical.
However I think that may be why you see the 3+2 designs on Nevada and Teggethoff.

Later, improved optics, fire control computer and aerial spotting made smaller volleys less impaired.

But that's for big ships firing only 2 shells/barrel/min.

For a small ship, with ROF of 4-6+, you should be able to get the same splash spotting effect from just 4 barrels.
You still need the number of shells/volley to be minimum of 3 (2 unders and on) so a single 3-gun might work,
but 2 twins or 3 singles bearing should be dandy.

As for mixtures of guns, Seekrieg has a 'multiple ships at same target' which is a mild deduction, and I apply that to one ship with mixed battery
as well. It's not a huge deduction, but if you have a poor FC solution, it's not worth the mixed battery. Closer in, it becomes worth it again.
Which matches what the Germans at least intended with their 150mm secondaries. Of course most WW1 fights were beyond effective FC range anyhow.

As for the Byzantine ship.
27 knots puts her in the same speed bracket as my 1906 protected cruisers, with similar armanent & protection, on 3/4 the displacement.
That is pretty good.

One of the 'Dark horses' out there is the Ethiopian Navy. It's really not obvious, but there is a couple hundred thousand tons of NPC navy on Red Sea.
Byzantine has a large army, and so can directly threaten the Ethiopian homeland, making them reluctant to engage.
But maintaining cheaper but effective patrol units will 'storyline' allow continued deterrence to the Ethiopians becoming 'active'.

Jefgte · December 15, 2021, 09:30:10 AM

A possible rebuilt for C3 class...
Increase Forecastle height
Increase freeboard => reduce draught
Change VTE 18450shp to turbines 36000shp speed update to 27,15kts
Change 6x102 to 6x120
Increase belt from 70mm/2.74m to 100mm/3,9m
Add 2x76.2AA
Change 18" TT to 21" TT
Increase reserve weught +100t
=> Displacement decrease from 6000t to 5110t

SC3, Byzantine Empire SC3 laid down 1902 (Engine 1920)

Constanta - Costinesti
Corinthe - Coron
Cheik Assab - Cheik Salih

SC3, Byzantine Empire SC3 laid down 1902 (Engine 1920)

Displacement:
   5 110 t light; 5 350 t standard; 6 100 t normal; 6 701 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (487,00 ft / 486,00 ft) x 54,00 ft x (15,21 / 16,37 ft)
   (148,44 m / 148,13 m) x 16,46 m x (4,64 / 4,99 m)

Armament:
2 - 7,50" / 191 mm 45,0 cal guns - 212,75lbs / 96,50kg shells, 125 per gun
     Breech loading guns in deck and hoist mounts, 1902 Model
     2 x Single mounts on centreline ends, evenly spread
4 - 7,50" / 191 mm 45,0 cal guns - 212,75lbs / 96,50kg shells, 125 per gun
     Breech loading guns in deck and hoist mounts, 1902 Model
     4 x Single mounts on sides, aft evenly spread
6 - 4,72" / 120 mm 45,0 cal guns - 53,17lbs / 24,12kg shells, 150 per gun
     Quick firing guns in deck mounts, 1902 Model
     6 x Single mounts on sides, forward evenly spread
2 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 200 per gun
     Anti-air guns in deck mounts, 1920 Model
     2 x Single mounts on centreline, aft evenly spread
      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, 1902 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
Weight of broadside 1 623 lbs / 736 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,94" / 100 mm   475,72 ft / 145,00 m   12,80 ft / 3,90 m
   Ends:   Unarmoured
     Main Belt covers 151 % of normal length

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2,75" / 70 mm   0,78" / 20 mm      2,15" / 55 mm
   2nd:   2,75" / 70 mm   0,78" / 20 mm      2,15" / 55 mm
   3rd:   0,79" / 20 mm     -           -
   4th:   0,39" / 10 mm     -           -
   5th:   0,39" / 10 mm     -           -

- Protected deck - single deck:
   For and Aft decks: 0,98" / 25 mm
   Forecastle: 0,79" / 20 mm Quarter deck: 0,79" / 20 mm

- Conning towers: Forward 2,76" / 70 mm, Aft 1,38" / 35 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 36 000 shp / 26 856 Kw = 27,15 kts
   Range 10 800nm at 12,00 kts
   Bunker at max displacement = 1 351 tons (25% coal)

Complement:
   344 - 448

Cost:
   £0,496 million / $1,983 million

Distribution of weights at normal displacement:
   Armament: 395 tons, 6,5 %
     - Guns: 395 tons, 6,5 %
   Armour: 1 332 tons, 21,8 %
     - Belts: 917 tons, 15,0 %
     - Armament: 75 tons, 1,2 %
     - Armour Deck: 310 tons, 5,1 %
     - Conning Towers: 30 tons, 0,5 %
   Machinery: 1 288 tons, 21,1 %
   Hull, fittings & equipment: 1 801 tons, 29,5 %
   Fuel, ammunition & stores: 991 tons, 16,2 %
   Miscellaneous weights: 293 tons, 4,8 %
     - Hull below water: 30 tons
     - Hull above water: 30 tons
     - On freeboard deck: 204 tons
     - Above deck: 29 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     6 672 lbs / 3 026 Kg = 31,6 x 7,5 " / 191 mm shells or 1,4 torpedoes
   Stability (Unstable if below 1.00): 1,15
   Metacentric height 2,6 ft / 0,8 m
   Roll period: 14,1 seconds
   Steadiness   - As gun platform (Average = 50 %): 73 %
         - Recoil effect (Restricted arc if above 1.00): 0,42
   Seaboat quality (Average = 1.00): 1,05

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,535 / 0,546
   Length to Beam Ratio: 9,00 : 1
   'Natural speed' for length: 22,05 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 0,00 degrees
   Stern overhang: 1,00 ft / 0,30 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   25,00 %, 20,51 ft / 6,25 m, 19,52 ft / 5,95 m
     - Forward deck:   25,00 %, 12,50 ft / 3,81 m, 12,50 ft / 3,81 m
     - Aft deck:   25,00 %, 12,50 ft / 3,81 m, 12,50 ft / 3,81 m
     - Quarter deck:   25,00 %, 12,50 ft / 3,81 m, 12,50 ft / 3,81 m
     - Average freeboard:      14,35 ft / 4,38 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 90,8 %
      - Above water (accommodation/working, high = better): 125,0 %
   Waterplane Area: 18 060 Square feet or 1 678 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 78 lbs/sq ft or 380 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,89
      - Longitudinal: 0,99
      - Overall: 0,90
   Caution: Hull subject to strain in open-sea
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

25t for Marconi
4t for top mast range finder - 1914 FC
30t for climatisation
30t for additionnal pumps
24t for 2x3TTx533 HW
80t for 2x40 minen
100t reserved

------------------------
Original build

Protected Cruiser, Byzantine Empire C3 class laid down 1902

Constanta - Costinesti
Corinthe - Coron
Cheik Assab - Cheik Salih

Displacement:
6 000 t light; 6 246 t standard; 6 784 t normal; 7 214 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(487,00 ft / 486,00 ft) x 54,00 ft x (16,91 / 17,74 ft)
(148,44 m / 148,13 m) x 16,46 m x (5,15 / 5,41 m)

Armament:
2 - 7,50" / 191 mm 45,0 cal guns - 212,75lbs / 96,50kg shells, 125 per gun
Breech loading guns in deck and hoist mounts, 1902 Model
2 x Single mounts on centreline ends, evenly spread
4 - 7,50" / 191 mm 45,0 cal guns - 212,75lbs / 96,50kg shells, 125 per gun
Breech loading guns in deck and hoist mounts, 1902 Model
4 x Single mounts on centreline, aft deck forward
6 - 4,00" / 102 mm 45,0 cal guns - 32,28lbs / 14,64kg shells, 200 per gun
Quick firing guns in deck mounts, 1902 Model
6 x Single mounts on sides, aft deck forward
4 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 2 000 per gun
Machine guns in deck mounts, 1902 Model
4 x Single mounts on sides, evenly spread
4 raised mounts
Weight of broadside 1 470 lbs / 667 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2,75" / 70 mm 476,00 ft / 145,08 m 9,00 ft / 2,74 m
Ends: Unarmoured
Main Belt covers 151 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2,75" / 70 mm 0,78" / 20 mm 2,15" / 55 mm
2nd: 2,75" / 70 mm 0,78" / 20 mm 2,15" / 55 mm
3rd: 0,78" / 20 mm - -
4th: 0,39" / 10 mm - -

- Protected deck - single deck:
For and Aft decks: 0,97" / 25 mm
Forecastle: 0,79" / 20 mm Quarter deck: 0,79" / 20 mm

- Conning towers: Forward 2,75" / 70 mm, Aft 1,38" / 35 mm

Machinery:
Coal and oil fired boilers, complex reciprocating steam engines,
Direct drive, 4 shafts, 18 450 ihp / 13 764 Kw = 22,52 kts
Range 5 000nm at 10,00 kts
Bunker at max displacement = 968 tons (90% coal)

Complement:
373 - 485

Cost:
£0,727 million / $2,907 million

Distribution of weights at normal displacement:
Armament: 369 tons, 5,4 %
- Guns: 369 tons, 5,4 %
Armour: 861 tons, 12,7 %
- Belts: 449 tons, 6,6 %
- Armament: 73 tons, 1,1 %
- Armour Deck: 307 tons, 4,5 %
- Conning Towers: 32 tons, 0,5 %
Machinery: 2 768 tons, 40,8 %
Hull, fittings & equipment: 1 844 tons, 27,2 %
Fuel, ammunition & stores: 784 tons, 11,6 %
Miscellaneous weights: 158 tons, 2,3 %
- Hull below water: 8 tons
- Hull above water: 30 tons
- On freeboard deck: 110 tons
- Above deck: 10 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2 953 lbs / 1 339 Kg = 14,0 x 7,5 " / 191 mm shells or 0,7 torpedoes
Stability (Unstable if below 1.00): 1,45
Metacentric height 3,8 ft / 1,1 m
Roll period: 11,7 seconds
Steadiness - As gun platform (Average = 50 %): 78 %
- Recoil effect (Restricted arc if above 1.00): 0,27
Seaboat quality (Average = 1.00): 1,40

Hull form characteristics:
Hull has raised forecastle,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0,535 / 0,542
Length to Beam Ratio: 9,00 : 1
'Natural speed' for length: 22,05 kts
Power going to wave formation at top speed: 45 %
Trim (Max stability = 0, Max steadiness = 100): 56
Bow angle (Positive = bow angles forward): 0,00 degrees
Stern overhang: 1,00 ft / 0,30 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 25,00 %, 18,80 ft / 5,73 m, 17,80 ft / 5,43 m
- Forward deck: 25,00 %, 10,80 ft / 3,29 m, 10,80 ft / 3,29 m
- Aft deck: 25,00 %, 10,80 ft / 3,29 m, 10,80 ft / 3,29 m
- Quarter deck: 25,00 %, 10,80 ft / 3,29 m, 10,80 ft / 3,29 m
- Average freeboard: 12,65 ft / 3,86 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 150,1 %
- Above water (accommodation/working, high = better): 99,6 %
Waterplane Area: 18 060 Square feet or 1 678 Square metres
Displacement factor (Displacement / loading): 87 %
Structure weight / hull surface area: 79 lbs/sq ft or 386 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,96
- Longitudinal: 0,88
- Overall: 0,90
Caution: Hull subject to strain in open-sea
Cramped machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

16t for 4x18'' TT + 4 reloads
10t for Marconi
10t for top mast rangefinder
30t for climatisation
30t for additionnal pumps
62t for 2x31 minen, Admiral staff or reserved

The Rock Doctor · December 15, 2021, 09:55:46 AM

What does this cost?

Jefgte · December 15, 2021, 04:00:09 PM

QuoteWhat does this cost?

3.34$ & 2.14BP

C3 - 6000t => 5110t			$	BP
	6 x 0,2		1,2
	new guns	6x191	0,392	0,392	(392t
	new guns	6x120	0,068	0,068	(68t)
	new guns	2x76,2	0,006	0,006	(6t)
	new belt	914t	0,914	0,914
	new engines	1288t	1,288	1,288
		Total =>	3,868	2,668

Scrapp 15%	old guns	6x191	0,0392	0,0392	(392t)
	old guns	6x102	0,0046	0,0046	(46t)
	old belt	449t	0,06735	0,06735
	old engines	2768t	0,4152	0,4152
		Total =>	0,52635	0,52635
- scrap cost	3,868 - 0,526 =>		3,34$
- scrap cost	2,668 - 0,526 =>			2,14 BP
			$	BP

The Rock Doctor · December 15, 2021, 04:28:40 PM

Recall that guns and engines have a cash cost which is double the BP cost.

Jefgte · December 16, 2021, 12:39:56 AM

QuoteRecall that guns and engines have a cash cost which is double the BP cost.

QuoteBP cost = (tonnage/1000); $ cost = twice the BP cost.

Just an oversight. Sorry

C3	6000t =>	5110t	$	BP
	6 x 0,2		1,2
	new guns	6x191	0,784	0,392	(392t)
	new guns	6x120	0,136	0,068	(68t)
	new guns	2x76,2	0,012	0,006	(6t)
	new belt	914t	0,914	0,914
	new engines	1288t	2,576	1,288
Scrapp 15%		Total =>	5,622	2,668

	old guns	6x191	0,0392	0,0392	(392t)
	old guns	6x102	0,0046	0,0046	(46t)
	old armour	449t	0,06735	0,06735
- scrap cost	old engines	2768t	0,4152	0,4152
- scrap cost		Total =>	0,52635	0,52635
	5,622 - 0,526 =>		5,096$
	2,668 - 0,526 =>			2,14 BP
			$	BP

Jefgte · December 16, 2021, 05:45:14 PM

Project A, Byzantine Empire BB8 laid down 1922

Displacement:
   34 000 t light; 36 158 t standard; 38 199 t normal; 39 832 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (668,31 ft / 666,01 ft) x 118,11 ft x (26,31 / 27,26 ft)
   (203,70 m / 203,00 m) x 36,00 m x (8,02 / 8,31 m)

Armament:
12 - 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
     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, 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 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   229,66 ft / 70,00 m   9,84 ft / 3,00 m
     3,28 ft / 1,00 m Unarmoured ends
   Upper:   3,54" / 90 mm   433,07 ft / 132,00 m   13,12 ft / 4,00 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 118,11 ft / 36,00 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: 3,15" / 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, 60 000 shp / 44 760 Kw = 23,17 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 3 674 tons

Note : The speed could be 21kts too (?)

Complement:
   1 366 - 1 776

Cost:
   £9,500 million / $38,001 million

Distribution of weights at normal displacement:
   Armament: 3 632 tons, 9,5 %
     - Guns: 3 632 tons, 9,5 %
   Armour: 11 992 tons, 31,4 %
     - Belts: 4 311 tons, 11,3 %
     - Torpedo bulkhead: 755 tons, 2,0 %
     - Void: 0 tons, 0,0 %
     - Armament: 3 434 tons, 9,0 %
     - Armour Deck: 3 059 tons, 8,0 %
     - Conning Towers: 433 tons, 1,1 %
   Machinery: 2 035 tons, 5,3 %
   Hull, fittings & equipment: 15 428 tons, 40,4 %
   Fuel, ammunition & stores: 4 199 tons, 11,0 %
   Miscellaneous weights: 913 tons, 2,4 %
     - Hull below water: 170 tons
     - Hull above water: 170 tons
     - On freeboard deck: 185 tons
     - Above deck: 388 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     60 324 lbs / 27 363 Kg = 35,7 x 15,0 " / 381 mm shells or 10,5 torpedoes
   Stability (Unstable if below 1.00): 1,21
   Metacentric height 9,1 ft / 2,8 m
   Roll period: 16,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,65
   Seaboat quality (Average = 1.00): 1,25

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,646 / 0,650
   Length to Beam Ratio: 5,64 : 1
   'Natural speed' for length: 25,81 kts
   Power going to wave formation at top speed: 47 %
   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): 66,6 %
      - Above water (accommodation/working, high = better): 171,6 %
   Waterplane Area: 60 039 Square feet or 5 578 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 231 lbs/sq ft or 1 130 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,51
      - 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
185t reserved...