Byzantine Empire 1929-1930

[Jefgte]

Byzantine Intelligence Services informed the Admiralty of the Parthian construction of 20,000t cruisers carrying 300mm guns. A kind of response to the 15800t Gaqus armed with 2T3x343s from 1918.
To maintain a certain parity, the Admiralty is planning a version of the Gaqus with a speed of 29kts.

Another possibility is to build another series of 11000 -12000t AC identical to the Isparta...

Habas-Hukos, Byzantine Empire AC8 laid down 1929

Displacement:
   18 000 t light; 19 005 t standard; 20 494 t normal; 21 686 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (621,66 ft / 616,80 ft) x 83,33 ft x (23,85 / 24,98 ft)
   (189,48 m / 188,00 m) x 25,40 m  x (7,27 / 7,61 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, 1929 Model
     2 x 3-gun mounts on centreline ends, evenly spread
      12 - 4,72" / 120 mm 45,0 cal guns - 50,00lbs / 22,68kg shells, 200 per gun
     Quick firing guns in deck mounts, 1929 Model
     6 x 2-gun mounts on sides, evenly spread
      24 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
     Anti-air guns in deck mounts, 1929 Model
     12 x Single mounts on sides, evenly spread
      12 raised mounts
      24 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 5 000 per gun
     Machine guns in deck mounts, 1929 Model
     12 x 2-gun mounts on sides, evenly spread
      12 raised mounts
      Weight of broadside 9 110 lbs / 4 132 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9,06" / 230 mm   400,26 ft / 122,00 m   9,84 ft / 3,00 m
   Ends:   1,57" / 40 mm   216,54 ft / 66,00 m   9,84 ft / 3,00 m
     Main Belt covers 100 % of normal length

   - Hull void:
      1,77" / 45 mm   400,26 ft / 122,00 m   23,62 ft / 7,20 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   10,0" / 255 mm   2,95" / 75 mm      9,06" / 230 mm
   3rd:   0,39" / 10 mm         -               -
   4th:   0,77" / 20 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 3,54" / 90 mm
   Forecastle: 1,18" / 30 mm  Quarter deck: 1,18" / 30 mm

   - Conning towers: Forward 9,06" / 230 mm, Aft 3,94" / 100 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 94 623 shp / 70 588 Kw = 29,00 kts
   Range 12 000nm at 12,00 kts
   Bunker at max displacement = 2 681 tons

Complement:
   856 - 1 113

Cost:
   £7,061 million / $28,246 million

Distribution of weights at normal displacement:
   Armament: 1 691 tons, 8,3 %
      - Guns: 1 691 tons, 8,3 %
   Armour: 5 470 tons, 26,7 %
      - Belts: 1 646 tons, 8,0 %
      - Void: 620 tons, 3,0 %
      - Armament: 858 tons, 4,2 %
      - Armour Deck: 2 137 tons, 10,4 %
      - Conning Towers: 210 tons, 1,0 %
   Machinery: 2 906 tons, 14,2 %
   Hull, fittings & equipment: 7 452 tons, 36,4 %
   Fuel, ammunition & stores: 2 494 tons, 12,2 %
   Miscellaneous weights: 481 tons, 2,3 %
      - Hull below water: 90 tons
      - Hull above water: 90 tons
      - On freeboard deck: 106 tons
      - Above deck: 195 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     27 104 lbs / 12 294 Kg = 22,0 x 13,5 " / 343 mm shells or 2,9 torpedoes
   Stability (Unstable if below 1.00): 1,11
   Metacentric height 4,6 ft / 1,4 m
   Roll period: 16,3 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,73
   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): 0,585 / 0,591
   Length to Beam Ratio: 7,40 : 1
   'Natural speed' for length: 24,84 kts
   Power going to wave formation at top speed: 57 %
   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 %,  27,56 ft / 8,40 m,  23,62 ft / 7,20 m
      - Forward deck:   32,00 %,  23,62 ft / 7,20 m,  19,69 ft / 6,00 m
      - Aft deck:   33,00 %,  19,69 ft / 6,00 m,  16,40 ft / 5,00 m
      - Quarter deck:   17,50 %,  16,40 ft / 5,00 m,  16,40 ft / 5,00 m
      - Average freeboard:      20,16 ft / 6,15 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 80,2 %
      - Above water (accommodation/working, high = better): 163,5 %
   Waterplane Area: 37 069 Square feet or 3 444 Square metres
   Displacement factor (Displacement / loading): 110 %
   Structure weight / hull surface area: 158 lbs/sq ft or 773 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,53
      - Overall: 1,00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD'
169t for 1924 Fire Control
25t for Marconi
OD
24t for 2x3TTx533HW
82t reserved for cata+seaplane, new armament, materials...
AW
90t for climatisation
BW
90t for additionnal pumps

[The Rock Doctor]

Fairly capable.  No full torpedo bulkhead, though?

[TacCovert4]

I'm seeing these ships....and realizing that I'm going to need to revive the battlecruisers like the revenge.  I guess I will start working on a quad 280 or 300.....

[Jefgte]

It may be necessary to temporarily repair ships whose damaged hulls threaten the survival of the ships...

Repair ship, Byzantine Empire Repair ship laid down 1929

Displacement:
   2 000 t light; 2 056 t standard; 2 333 t normal; 2 555 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (259,19 ft / 259,19 ft) x 45,93 ft x (11,14 / 12,01 ft)
   (79,00 m / 79,00 m) x 14,00 m  x (3,39 / 3,66 m)

Armament:
      8 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 000 per gun
     Breech loading guns in deck mounts, 1929 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, 3 000 per gun
     Machine guns in deck mounts, 1929 Model
     4 x Single mounts on sides, forward deck aft
      Weight of broadside 16 lbs / 7 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,39" / 10 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 10 400 shp / 7 758 Kw = 21,02 kts
   Range 8 000nm at 12,00 kts
   Bunker at max displacement = 499 tons

Complement:
   167 - 218

Cost:
   £0,462 million / $1,850 million

Distribution of weights at normal displacement:
   Armament: 3 tons, 0,1 %
      - Guns: 3 tons, 0,1 %
   Armour: 4 tons, 0,2 %
      - Armament: 4 tons, 0,2 %
   Machinery: 319 tons, 13,7 %
   Hull, fittings & equipment: 688 tons, 29,5 %
   Fuel, ammunition & stores: 333 tons, 14,3 %
   Miscellaneous weights: 985 tons, 42,2 %
      - Hull below water: 630 tons
      - Hull above water: 300 tons
      - On freeboard deck: 30 tons
      - Above deck: 25 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3 989 lbs / 1 809 Kg = 2 042,6 x 1,6 " / 40 mm shells or 1,1 torpedoes
   Stability (Unstable if below 1.00): 1,45
   Metacentric height 3,0 ft / 0,9 m
   Roll period: 11,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 74 %
         - Recoil effect (Restricted arc if above 1.00): 0,01
   Seaboat quality  (Average = 1.00): 1,08

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,616 / 0,625
   Length to Beam Ratio: 5,64 : 1
   'Natural speed' for length: 16,10 kts
   Power going to wave formation at top speed: 65 %
   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:   16,00 %,  18,04 ft / 5,50 m,  18,04 ft / 5,50 m
      - Forward deck:   34,00 %,  14,11 ft / 4,30 m,  14,11 ft / 4,30 m
      - Aft deck:   34,00 %,  14,11 ft / 4,30 m,  14,11 ft / 4,30 m
      - Quarter deck:   16,00 %,  14,11 ft / 4,30 m,  14,11 ft / 4,30 m
      - Average freeboard:      14,74 ft / 4,49 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 89,0 %
      - Above water (accommodation/working, high = better): 141,7 %
   Waterplane Area: 8 838 Square feet or 821 Square metres
   Displacement factor (Displacement / loading): 143 %
   Structure weight / hull surface area: 54 lbs/sq ft or 263 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,90
      - Longitudinal: 2,50
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
25t for Marconi
OD
30t for 2 cranes
AW
300t for materials, pumps, spares, steel plates, guns parts...
BW
230t for materials;, spares, steel plates, guns parts...
100t coal
300t Oil for boilers

[TacCovert4]

Very good system.  I've got several of my Crab class, which are quite a bit smaller, but definitely the same concept of having a fleet salvage vessel.

[The Rock Doctor]

Nice.  That's a concept I haven't worked with here.

[Jefgte]

D1620, Byzantine Empire D1620 laid down 1930

Displacement:
   1 620 t light; 1 755 t standard; 2 056 t normal; 2 297 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (384,37 ft / 380,58 ft) x 35,40 ft x (12,90 / 13,91 ft)
   (117,15 m / 116,00 m) x 10,79 m  x (3,93 / 4,24 m)

Armament:
      4 - 4,72" / 120 mm 45,0 cal guns - 50,00lbs / 22,68kg shells, 200 per gun
     Quick firing guns in deck mounts, 1930 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      8 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 4 000 per gun
     Anti-air guns in deck mounts, 1930 Model
     2 x 4-gun mounts on centreline ends, evenly spread
      2 raised mounts
      8 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 4 000 per gun
     Anti-air guns in deck mounts, 1930 Model
     2 x 4-gun mounts on sides, forward deck aft
      2 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, 1930 Model
     4 x 2-gun mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 233 lbs / 106 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,39" / 10 mm         -               -
   2nd:   0,24" / 6 mm         -               -
   3rd:   0,24" / 6 mm         -               -
   4th:   0,24" / 6 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 38 180 shp / 28 482 Kw = 32,35 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 542 tons

Complement:
   152 - 198

Cost:
   £0,889 million / $3,554 million

Distribution of weights at normal displacement:
   Armament: 44 tons, 2,2 %
      - Guns: 44 tons, 2,2 %
   Armour: 5 tons, 0,2 %
      - Armament: 5 tons, 0,2 %
   Machinery: 1 027 tons, 50,0 %
   Hull, fittings & equipment: 459 tons, 22,3 %
   Fuel, ammunition & stores: 437 tons, 21,2 %
   Miscellaneous weights: 84 tons, 4,1 %
      - Hull above water: 5 tons
      - On freeboard deck: 50 tons
      - Above deck: 29 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     561 lbs / 254 Kg = 10,6 x 4,7 " / 120 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,34
   Metacentric height 1,8 ft / 0,5 m
   Roll period: 11,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,17
   Seaboat quality  (Average = 1.00): 1,08

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,414 / 0,429
   Length to Beam Ratio: 10,75 : 1
   'Natural speed' for length: 19,51 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 66
   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 %,  21,49 ft / 6,55 m,  16,73 ft / 5,10 m
      - Forward deck:   32,50 %,  16,73 ft / 5,10 m,  12,47 ft / 3,80 m
      - Aft deck:   32,50 %,  12,47 ft / 3,80 m,  11,48 ft / 3,50 m
      - Quarter deck:   17,50 %,  11,48 ft / 3,50 m,  11,81 ft / 3,60 m
      - Average freeboard:      13,94 ft / 4,25 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 171,4 %
      - Above water (accommodation/working, high = better): 139,3 %
   Waterplane Area: 8 365 Square feet or 777 Square metres
   Displacement factor (Displacement / loading): 82 %
   Structure weight / hull surface area: 31 lbs/sq ft or 154 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,20
      - Overall: 0,54
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
4t for1924 top mast rangefinder
25t for LR marconi
OD
24t for 2x3TTx533HW
10t for1920 sonar
6t for 30x195 DC
10t reserved for new material, paravanes, armament, minen.
AW
5t for climatisation