Byzantine Empire Colonial Ships

[Jefgte]

...The carrier is interesting, I think to limited for my taste, but similar fighter carrier concept to the Bazdari class...  fun to see a range of options out there

CVE studies will start from this SS with an increase in the air group, armament or both.

[Jefgte]

I increase airgroup from 12 to 18

CE1, Byzantine Empire 7400t Escort Carrier-18 aircrafts laid down 1929

Displacement:
   7 400 t light; 7 639 t standard; 8 229 t normal; 8 700 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (554,46 ft / 554,46 ft) x 70,54 ft x (15,34 / 15,99 ft)
   (169,00 m / 169,00 m) x 21,50 m  x (4,68 / 4,87 m)

Armament:
      8 - 4,02" / 102 mm 45,0 cal guns - 33,00lbs / 14,97kg shells, 230 per gun
     Anti-air guns in deck mounts, 1929 Model
     4 x 2-gun mounts on side ends, evenly spread
      16 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
     Anti-air guns in deck mounts, 1929 Model
     8 x 2-gun mounts on side ends, evenly spread
      8 raised mounts
      16 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 10 000 per gun
     Machine guns in deck mounts, 1929 Model
     8 x 2-gun mounts on sides, evenly spread
      8 raised mounts
      Weight of broadside 297 lbs / 135 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         -               -

   - Box over machinery & magazines:
   1,57" / 40 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 40 400 shp / 30 138 Kw = 27,00 kts
   Range 8 000nm at 12,00 kts
   Bunker at max displacement = 1 061 tons

Complement:
   431 - 561

Cost:
   £1,789 million / $7,158 million

Distribution of weights at normal displacement:
   Armament: 56 tons, 0,7 %
      - Guns: 56 tons, 0,7 %
   Armour: 488 tons, 5,9 %
      - Armament: 10 tons, 0,1 %
      - Armour Deck: 479 tons, 5,8 %
   Machinery: 1 241 tons, 15,1 %
   Hull, fittings & equipment: 3 824 tons, 46,5 %
   Fuel, ammunition & stores: 829 tons, 10,1 %
   Miscellaneous weights: 1 791 tons, 21,8 %
      - Hull below water: 940 tons
      - Hull above water: 800 tons
      - On freeboard deck: 20 tons
      - Above deck: 31 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     22 494 lbs / 10 203 Kg = 694,7 x 4,0 " / 102 mm shells or 2,6 torpedoes
   Stability (Unstable if below 1.00): 1,30
   Metacentric height 4,7 ft / 1,4 m
   Roll period: 13,6 seconds
   Steadiness   - As gun platform (Average = 50 %): 80 %
         - Recoil effect (Restricted arc if above 1.00): 0,04
   Seaboat quality  (Average = 1.00): 2,00

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,480 / 0,487
   Length to Beam Ratio: 7,86 : 1
   'Natural speed' for length: 23,55 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 40
   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 %,  29,53 ft / 9,00 m,  29,53 ft / 9,00 m
      - Forward deck:   33,00 %,  29,53 ft / 9,00 m,  29,53 ft / 9,00 m
      - Aft deck:   33,00 %,  29,53 ft / 9,00 m,  29,53 ft / 9,00 m
      - Quarter deck:   16,50 %,  29,53 ft / 9,00 m,  29,53 ft / 9,00 m
      - Average freeboard:      29,53 ft / 9,00 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 75,2 %
      - Above water (accommodation/working, high = better): 334,0 %
   Waterplane Area: 25 595 Square feet or 2 378 Square metres
   Displacement factor (Displacement / loading): 168 %
   Structure weight / hull surface area: 87 lbs/sq ft or 423 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,86
      - Longitudinal: 3,57
      - Overall: 1,00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

AD
6t for top fire control
25t for Marconi
OD
20t for fire control
AW
720t for 9 aircrafts
30t for fire control
20t for aircraft spares or reserved
30t for climatisation
BW
720t for 9 aircrafts
60t for additionnal pumps
60t for aircrafts amunition & AVGAS protection
30t for fire control
30t for climatisation
40t reserved

Max transport capacity : 36 aircrafts

[Jefgte]

More economical than a Destroyer and more effective in fighting against MTBs which proliferate in small Navies,
these TGBs can work with 27kts colonial cruisers.
This class seems more appropriate to me than a 1400t DD.

Australian class, Byzantine Empire TGB700 laid down 1929

Displacement:
   700 t light; 742 t standard; 797 t normal; 841 t full load

Now this TGB780 is a light destroyer & can work with TBs & DDs.
Always in 80m shipyards

TGB780, Byzantine Empire Colonial Destroyer laid down 1929

Displacement:
   780 t light; 822 t standard; 889 t normal; 942 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (262,44 ft / 261,81 ft) x 25,92 ft x (11,46 / 11,91 ft)
   (79,99 m / 79,80 m) x 7,90 m  x (3,49 / 3,63 m)

Armament:
      4 - 4,02" / 102 mm 45,0 cal guns - 33,00lbs / 14,97kg shells, 200 per gun
     Quick firing guns in deck mounts, 1929 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      4 - 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
     2 x 2-gun mounts on sides, aft deck aft
      2 raised mounts
      4 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1929 Model
     2 x 2-gun mounts on sides, forward deck forward
      2 raised mounts
      Weight of broadside 140 lbs / 64 kg

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 22 200 shp / 16 561 Kw = 30,68 kts
   Range 3 500nm at 12,00 kts
   Bunker at max displacement = 120 tons

Complement:
   80 - 105

Cost:
   £0,385 million / $1,541 million

Distribution of weights at normal displacement:
   Armament: 25 tons, 2,8 %
      - Guns: 25 tons, 2,8 %
   Armour: 4 tons, 0,5 %
      - Armament: 4 tons, 0,5 %
   Machinery: 444 tons, 50,0 %
   Hull, fittings & equipment: 243 tons, 27,4 %
   Fuel, ammunition & stores: 109 tons, 12,2 %
   Miscellaneous weights: 63 tons, 7,1 %
      - Hull above water: 7 tons
      - On freeboard deck: 28 tons
      - Above deck: 28 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     237 lbs / 108 Kg = 7,3 x 4,0 " / 102 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,03
   Metacentric height 0,7 ft / 0,2 m
   Roll period: 13,1 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,39
   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 / 0,408
   Length to Beam Ratio: 10,10 : 1
   'Natural speed' for length: 16,18 kts
   Power going to wave formation at top speed: 69 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 2,00 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 %,  17,88 ft / 5,45 m,  14,60 ft / 4,45 m
      - Forward deck:   33,00 %,  14,60 ft / 4,45 m,  11,32 ft / 3,45 m
      - Aft deck:   33,00 %,  11,32 ft / 3,45 m,  10,66 ft / 3,25 m
      - Quarter deck:   16,00 %,  10,66 ft / 3,25 m,  11,32 ft / 3,45 m
      - Average freeboard:      12,53 ft / 3,82 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 171,7 %
      - Above water (accommodation/working, high = better): 119,1 %
   Waterplane Area: 4 177 Square feet or 388 Square metres
   Displacement factor (Displacement / loading): 59 %
   Structure weight / hull surface area: 27 lbs/sq ft or 132 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 3,18
      - Overall: 0,60
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
25t for LR Marconi
3t for top mast rangefinder
OD
16t for 1x4TTx21" HW
5t for hydrophone
5t for 50x90kg DC
2t for paravanes
AW
7t for climatisation

Trial speed: 32kts
Bonus: 1.33

[Jefgte]

vs MTB...

Coastal class Class, Byzantine Empire TGB400 laid down 1929

Displacement:
   400 t light; 415 t standard; 445 t normal; 469 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (242,43 ft / 236,22 ft) x 23,62 ft x (6,74 / 6,98 ft)
   (73,89 m / 72,00 m) x 7,20 m  x (2,06 / 2,13 m)

Armament:
      1 - 3,00" / 76,2 mm 45,0 cal gun - 13,62lbs / 6,18kg shells, 200 per gun
     Quick firing gun in deck mount, 1929 Model
     1 x Single mount on centreline forward
      2 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
     Quick firing guns in deck mounts, 1929 Model
     2 x Single mounts on centreline, aft evenly spread
      2 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1929 Model
     2 x Single mounts on sides, forward deck centre
      Weight of broadside 18 lbs / 8 kg

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 9 400 shp / 7 012 Kw = 27,39 kts
   Range 3 600nm at 10,00 kts
   Bunker at max displacement = 54 tons

Complement:
   47 - 62

Cost:
   £0,184 million / $0,737 million

Distribution of weights at normal displacement:
   Armament: 4 tons, 0,8 %
      - Guns: 4 tons, 0,8 %
   Armour: 2 tons, 0,5 %
      - Armament: 2 tons, 0,5 %
   Machinery: 222 tons, 50,0 %
   Hull, fittings & equipment: 162 tons, 36,3 %
   Fuel, ammunition & stores: 45 tons, 10,2 %
   Miscellaneous weights: 10 tons, 2,2 %
      - On freeboard deck: 10 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     198 lbs / 90 Kg = 14,7 x 3,0 " / 76 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,23
   Metacentric height 0,8 ft / 0,3 m
   Roll period: 10,9 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,06
   Seaboat quality  (Average = 1.00): 1,35

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,414 / 0,421
   Length to Beam Ratio: 10,00 : 1
   'Natural speed' for length: 15,37 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 52
   Bow angle (Positive = bow angles forward): 20,00 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 %,  17,06 ft / 5,20 m,  14,11 ft / 4,30 m
      - Forward deck:   32,50 %,  14,11 ft / 4,30 m,  11,15 ft / 3,40 m
      - Aft deck:   32,50 %,  11,15 ft / 3,40 m,  9,84 ft / 3,00 m
      - Quarter deck:   17,50 %,  9,84 ft / 3,00 m,  10,50 ft / 3,20 m
      - Average freeboard:      11,97 ft / 3,65 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 164,8 %
      - Above water (accommodation/working, high = better): 146,8 %
   Waterplane Area: 3 465 Square feet or 322 Square metres
   Displacement factor (Displacement / loading): 74 %
   Structure weight / hull surface area: 22 lbs/sq ft or 105 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 3,49
      - Overall: 0,61
   Cramped 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

10t short Marconi
9 tons for 3TTx450
1t for 10 DC

[TacCovert4]

Not bad as a general purpose patrol craft.  Though the speed being low enough that most cruisers and even some new capital ships can outpace it handily gives me concerns about it being able to survive or be effective as an offensive platform.

[Jefgte]

Update to 500t

Coastal class, Byzantine Empire T500 laid down 1929

Displacement:
   500 t light; 518 t standard; 551 t normal; 578 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (257,37 ft / 252,62 ft) x 24,05 ft x (7,94 / 8,19 ft)
   (78,45 m / 77,00 m) x 7,33 m  x (2,42 / 2,50 m)

Armament:
      1 - 4,02" / 102 mm 45,0 cal gun - 33,00lbs / 14,97kg shells, 250 per gun
     Quick firing gun in deck mount, 1929 Model
     1 x Single mount on centreline, forward deck forward
      2 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 000 per gun
     Anti-air guns in deck mount, 1929 Model
     1 x 2-gun mount on centreline, aft deck aft
      2 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1929 Model
     2 x Single mounts on sides, forward deck forward
      2 raised mounts
      Weight of broadside 37 lbs / 17 kg

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 13 040 shp / 9 728 Kw = 29,03 kts
   Range 3 500nm at 10,00 kts
   Bunker at max displacement = 60 tons

Complement:
   56 - 73

Cost:
   £0,231 million / $0,926 million

Distribution of weights at normal displacement:
   Armament: 7 tons, 1,2 %
      - Guns: 7 tons, 1,2 %
   Armour: 1 tons, 0,2 %
      - Armament: 1 tons, 0,2 %
   Machinery: 275 tons, 50,0 %
   Hull, fittings & equipment: 192 tons, 34,8 %
   Fuel, ammunition & stores: 52 tons, 9,4 %
   Miscellaneous weights: 24 tons, 4,4 %
      - Hull above water: 2 tons
      - On freeboard deck: 21 tons
      - Above deck: 1 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     212 lbs / 96 Kg = 6,6 x 4,0 " / 102 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,14
   Metacentric height 0,8 ft / 0,2 m
   Roll period: 11,6 seconds
   Steadiness   - As gun platform (Average = 50 %): 74 %
         - Recoil effect (Restricted arc if above 1.00): 0,13
   Seaboat quality  (Average = 1.00): 1,32

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,400 / 0,407
   Length to Beam Ratio: 10,50 : 1
   'Natural speed' for length: 15,89 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   Bow angle (Positive = bow angles forward): 15,00 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 %,  17,72 ft / 5,40 m,  14,11 ft / 4,30 m
      - Forward deck:   33,00 %,  14,11 ft / 4,30 m,  11,48 ft / 3,50 m
      - Aft deck:   33,00 %,  11,48 ft / 3,50 m,  10,50 ft / 3,20 m
      - Quarter deck:   16,00 %,  10,50 ft / 3,20 m,  11,15 ft / 3,40 m
      - Average freeboard:      12,38 ft / 3,77 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 166,0 %
      - Above water (accommodation/working, high = better): 151,3 %
   Waterplane Area: 3 740 Square feet or 347 Square metres
   Displacement factor (Displacement / loading): 65 %
   Structure weight / hull surface area: 23 lbs/sq ft or 112 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 3,45
      - Overall: 0,60
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

AD
10t for SR Marconi
1t for top fire control
OD
9t for 2x3TTx533
2t for paravanes
5t Hydrophone
5t for 50 DC
AW
2t engines ventillation


Trial speed: 31.5kts
Bonus: 2.48

[TacCovert4]

I think you're going to get better service out of this version.

[Jefgte]

If I choose the classical 25kts speed of the TGB, I have a well balanced 500t ship.
Ideal for coastal operations, escort and combat against MTBs
Built in 6 months and inexpensive.

Coastal class, Byzantine Empire TGB500 laid down 1929

Displacement:
   500 t light; 526 t standard; 568 t normal; 603 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (240,79 ft / 236,22 ft) x 26,25 ft x (8,02 / 8,33 ft)
   (73,39 m / 72,00 m) x 8,00 m  x (2,45 / 2,54 m)

Armament:
      3 - 4,02" / 102 mm 45,0 cal guns - 33,00lbs / 14,97kg shells, 215 per gun
     Quick firing guns in deck mounts, 1929 Model
     3 x Single mounts on centreline ends, majority forward
      1 raised mount - superfiring
      2 - 1,57" / 40,0 mm 39,0 cal guns - 1,86lbs / 0,84kg shells, 1 000 per gun
     Anti-air guns in deck mount, 1929 Model
     1 x 2-gun mount on centreline, aft deck centre
      1 raised mount
      2 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1929 Model
     2 x Single mounts on sides, forward deck forward
      2 raised mounts
      Weight of broadside 102 lbs / 46 kg

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 7 780 shp / 5 804 Kw = 25,20 kts
   Range 4 500nm at 10,00 kts
   Bunker at max displacement = 77 tons

Complement:
   57 - 75

Cost:
   £0,224 million / $0,895 million

Distribution of weights at normal displacement:
   Armament: 18 tons, 3,2 %
      - Guns: 18 tons, 3,2 %
   Armour: 3 tons, 0,5 %
      - Armament: 3 tons, 0,5 %
   Machinery: 239 tons, 42,0 %
   Hull, fittings & equipment: 214 tons, 37,6 %
   Fuel, ammunition & stores: 68 tons, 12,0 %
   Miscellaneous weights: 26 tons, 4,6 %
      - Hull above water: 3 tons
      - On freeboard deck: 21 tons
      - Above deck: 2 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     344 lbs / 156 Kg = 10,6 x 4,0 " / 102 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,20
   Metacentric height 0,9 ft / 0,3 m
   Roll period: 11,3 seconds
   Steadiness   - As gun platform (Average = 50 %): 74 %
         - Recoil effect (Restricted arc if above 1.00): 0,30
   Seaboat quality  (Average = 1.00): 1,41

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,400 / 0,408
   Length to Beam Ratio: 9,00 : 1
   'Natural speed' for length: 15,37 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 52
   Bow angle (Positive = bow angles forward): 15,00 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 %,  17,06 ft / 5,20 m,  13,78 ft / 4,20 m
      - Forward deck:   33,00 %,  13,78 ft / 4,20 m,  10,83 ft / 3,30 m
      - Aft deck:   33,00 %,  10,83 ft / 3,30 m,  10,17 ft / 3,10 m
      - Quarter deck:   16,00 %,  10,17 ft / 3,10 m,  10,83 ft / 3,30 m
      - Average freeboard:      11,92 ft / 3,63 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 146,7 %
      - Above water (accommodation/working, high = better): 145,4 %
   Waterplane Area: 3 816 Square feet or 355 Square metres
   Displacement factor (Displacement / loading): 103 %
   Structure weight / hull surface area: 29 lbs/sq ft or 144 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,63
      - Longitudinal: 3,47
      - Overall: 0,75
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

AD
10t for SR Marconi
2t for top fire control
OD
9t for 2x3TTx533
2t for paravanes
5t Hydrophone
5t for 50 DC
AW
3t engines ventillation

[Jefgte]

After much procrastination, speed seems to me to be an important element...
So, I adapted the latest series of 500t torpedo boats - Hanish class by removing heavy TTs and adding ASW weapons and paravanes.
This version is definitively in the PLAN.

Coastal class, Byzantine Empire T500C laid down 1929

Displacement:
   500 t light; 523 t standard; 561 t normal; 591 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (247,56 ft / 246,06 ft) x 24,61 ft x (8,10 / 8,39 ft)
   (75,46 m / 75,00 m) x 7,50 m  x (2,47 / 2,56 m)

Armament:
      2 - 4,00" / 102 mm 45,0 cal guns - 33,00lbs / 14,97kg shells, 200 per gun
     Quick firing guns in deck mounts, 1929 Model
     2 x Single mounts on centreline ends, evenly spread
      2 - 1,57" / 40,0 mm 39,0 cal guns - 1,86lbs / 0,84kg shells, 2 000 per gun
     Quick firing guns in deck mount, 1929 Model
     1 x 2-gun mount on centreline, aft deck centre
      1 raised mount
      2 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1929 Model
     2 x Single mounts on sides, forward deck forward
      2 raised mounts
      Weight of broadside 70 lbs / 32 kg

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 14 600 shp / 10 892 Kw = 29,56 kts
   Range 4 000nm at 10,00 kts
   Bunker at max displacement = 69 tons

Complement:
   56 - 74

Cost:
   £0,240 million / $0,962 million

Distribution of weights at normal displacement:
   Armament: 12 tons, 2,2 %
      - Guns: 12 tons, 2,2 %
   Armour: 4 tons, 0,7 %
      - Armament: 4 tons, 0,7 %
   Machinery: 280 tons, 50,0 %
   Hull, fittings & equipment: 179 tons, 31,9 %
   Fuel, ammunition & stores: 61 tons, 10,9 %
   Miscellaneous weights: 24 tons, 4,3 %
      - Hull above water: 2 tons
      - On freeboard deck: 21 tons
      - Above deck: 1 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     188 lbs / 85 Kg = 5,9 x 4,0 " / 102 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,11
   Metacentric height 0,7 ft / 0,2 m
   Roll period: 12,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0,23
   Seaboat quality  (Average = 1.00): 1,04

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,400 / 0,407
   Length to Beam Ratio: 10,00 : 1
   'Natural speed' for length: 15,69 kts
   Power going to wave formation at top speed: 69 %
   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:   18,00 %,  17,32 ft / 5,28 m,  13,55 ft / 4,13 m
      - Forward deck:   33,00 %,  13,55 ft / 4,13 m,  10,17 ft / 3,10 m
      - Aft deck:   33,00 %,  10,17 ft / 3,10 m,  10,17 ft / 3,10 m
      - Quarter deck:   16,00 %,  10,17 ft / 3,10 m,  10,50 ft / 3,20 m
      - Average freeboard:      11,63 ft / 3,55 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 169,1 %
      - Above water (accommodation/working, high = better): 139,6 %
   Waterplane Area: 3 727 Square feet or 346 Square metres
   Displacement factor (Displacement / loading): 59 %
   Structure weight / hull surface area: 24 lbs/sq ft or 116 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 2,82
      - Overall: 0,59
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
1t for top fire control
OD
9t for 1x3TTx533
5t for Hydrophone
5t for 50x90kg DC
2t for paravanes
AW
2t engines ventillation


Trial speed: 32kts
Bonus: 2.54

[The Rock Doctor]

It's a decent balance of capabilities.  I'd take it over the preceding 500t design.

[Jefgte]

Update CE1 from 7400t to 7900t
(Add 8x152)

CE1, Byzantine Empire 7900t Escort Carrier-18 aircrafts laid down 1929

Displacement:
   7 900 t light; 8 209 t standard; 8 826 t normal; 9 319 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (576,07 ft / 570,87 ft) x 71,36 ft x (15,80 / 16,45 ft)
   (175,59 m / 174,00 m) x 21,75 m  x (4,82 / 5,01 m)

Armament:
      8 - 5,98" / 152 mm 45,0 cal guns - 100,00lbs / 45,36kg shells, 122 per gun
     Breech loading guns in casemate mounts, 1929 Model
     8 x Single mounts on sides, evenly spread
      8 - 4,02" / 102 mm 45,0 cal guns - 33,00lbs / 14,97kg shells, 250 per gun
     Anti-air guns in deck mounts, 1929 Model
     4 x 2-gun mounts on side ends, evenly spread
      4 raised mounts
      16 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
     Anti-air guns in deck mounts, 1929 Model
     8 x 2-gun mounts on side ends, evenly spread
      8 raised mounts
      16 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 10 000 per gun
     Machine guns in deck mounts, 1929 Model
     8 x 2-gun mounts on sides, evenly spread
      8 raised mounts
      Weight of broadside 1 097 lbs / 498 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1,18" / 30 mm         -         1,57" / 40 mm
   2nd:   0,39" / 10 mm         -               -
   3rd:   0,39" / 10 mm         -               -
   4th:   0,24" / 6 mm         -               -

   - Box over machinery & magazines:
   1,57" / 40 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 42 000 shp / 31 332 Kw = 27,06 kts
   Range 8 000nm at 12,00 kts
   Bunker at max displacement = 1 109 tons

Complement:
   454 - 591

Cost:
   £2,051 million / $8,202 million

Distribution of weights at normal displacement:
   Armament: 185 tons, 2,1 %
      - Guns: 185 tons, 2,1 %
   Armour: 518 tons, 5,9 %
      - Armament: 30 tons, 0,3 %
      - Armour Deck: 489 tons, 5,5 %
   Machinery: 1 290 tons, 14,6 %
   Hull, fittings & equipment: 4 104 tons, 46,5 %
   Fuel, ammunition & stores: 925 tons, 10,5 %
   Miscellaneous weights: 1 803 tons, 20,4 %
      - Hull below water: 940 tons
      - Hull above water: 800 tons
      - On freeboard deck: 20 tons
      - Above deck: 43 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     23 049 lbs / 10 455 Kg = 215,1 x 6,0 " / 152 mm shells or 2,6 torpedoes
   Stability (Unstable if below 1.00): 1,28
   Metacentric height 4,7 ft / 1,4 m
   Roll period: 13,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 80 %
         - Recoil effect (Restricted arc if above 1.00): 0,14
   Seaboat quality  (Average = 1.00): 2,00

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,480 / 0,487
   Length to Beam Ratio: 8,00 : 1
   'Natural speed' for length: 23,89 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 40
   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 %,  29,53 ft / 9,00 m,  29,53 ft / 9,00 m
      - Forward deck:   33,00 %,  29,53 ft / 9,00 m,  29,53 ft / 9,00 m
      - Aft deck:   33,00 %,  29,53 ft / 9,00 m,  29,53 ft / 9,00 m
      - Quarter deck:   16,50 %,  29,53 ft / 9,00 m,  29,53 ft / 9,00 m
      - Average freeboard:      29,53 ft / 9,00 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 76,4 %
      - Above water (accommodation/working, high = better): 330,3 %
   Waterplane Area: 26 658 Square feet or 2 477 Square metres
   Displacement factor (Displacement / loading): 163 %
   Structure weight / hull surface area: 91 lbs/sq ft or 447 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,87
      - Longitudinal: 3,43
      - Overall: 1,00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

AD
18t for top fire control
25t for Marconi
OD
20t for fire control
AW
720t for 9 aircrafts
30t for fire control
20t for aircraft spares or reserved
30t for climatisation
BW
720t for 9 aircrafts
60t for additionnal pumps
60t for aircrafts amunition & AVGAS protection
30t for fire control
30t for climatisation
40t reserved

Max transport capacity:
2477 : 65 = 38 aircrafts

[TacCovert4]

I like it.  Almost as many aircraft as my Martiniques, but quite a bit smaller.

[Jefgte]

Coastal class, Byzantine Empire T500C laid down 1929

Displacement:
   500 t light; 524 t standard; 562 t normal; 593 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (249,12 ft / 246,06 ft) x 24,61 ft x (8,12 / 8,41 ft)
   (75,93 m / 75,00 m) x 7,50 m  x (2,48 / 2,56 m)

Armament:
      2 - 4,00" / 102 mm 45,0 cal guns - 33,00lbs / 14,97kg shells, 200 per gun
     Quick firing guns in deck mounts, 1929 Model
     2 x Single mounts on centreline ends, evenly spread
      2 - 1,57" / 40,0 mm 39,0 cal guns - 1,85lbs / 0,84kg shells, 2 000 per gun
     Quick firing guns in deck mount, 1929 Model
     1 x 2-gun mount on centreline, aft deck centre
      1 raised mount
      4 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1929 Model
     2 x 2-gun mounts on sides, forward deck forward
      2 raised mounts
      Weight of broadside 70 lbs / 32 kg

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 14 600 shp / 10 892 Kw = 29,55 kts
   Range 4 000nm at 10,00 kts
   Bunker at max displacement = 69 tons

Complement:
   57 - 75

Cost:
   £0,241 million / $0,964 million

Distribution of weights at normal displacement:
   Armament: 13 tons, 2,2 %
      - Guns: 13 tons, 2,2 %
   Armour: 3 tons, 0,6 %
      - Armament: 3 tons, 0,6 %
   Machinery: 281 tons, 50,0 %
   Hull, fittings & equipment: 180 tons, 32,0 %
   Fuel, ammunition & stores: 62 tons, 11,0 %
   Miscellaneous weights: 24 tons, 4,3 %
      - Hull above water: 2 tons
      - On freeboard deck: 21 tons
      - Above deck: 1 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     189 lbs / 86 Kg = 5,9 x 4,0 " / 102 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,11
   Metacentric height 0,7 ft / 0,2 m
   Roll period: 12,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0,23
   Seaboat quality  (Average = 1.00): 1,04

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,400 / 0,407
   Length to Beam Ratio: 10,00 : 1
   'Natural speed' for length: 15,69 kts
   Power going to wave formation at top speed: 69 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   18,00 %,  17,32 ft / 5,28 m,  13,55 ft / 4,13 m
      - Forward deck:   33,00 %,  13,55 ft / 4,13 m,  10,17 ft / 3,10 m
      - Aft deck:   33,00 %,  10,17 ft / 3,10 m,  10,17 ft / 3,10 m
      - Quarter deck:   16,00 %,  10,17 ft / 3,10 m,  10,50 ft / 3,20 m
      - Average freeboard:      11,63 ft / 3,55 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 169,2 %
      - Above water (accommodation/working, high = better): 137,2 %
   Waterplane Area: 3 727 Square feet or 346 Square metres
   Displacement factor (Displacement / loading): 59 %
   Structure weight / hull surface area: 24 lbs/sq ft or 117 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 2,84
      - Overall: 0,59
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
1t for top fire control
OD
9t for 1x3TTx533
5t for Hydrophone
5t for 50x90kg DC
2t for paravanes
AW
2t engines ventillation


Trial speed: 32kts
Bonus: 2.45

[Jefgte]

D14, Byzantine Empire Colonial Destroyer laid down 1930

Displacement:
   1 400 t light; 1 491 t standard; 1 689 t normal; 1 847 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (344,07 ft / 341,21 ft) x 34,12 ft x (11,98 / 12,74 ft)
   (104,87 m / 104,00 m) x 10,40 m  x (3,65 / 3,88 m)

Armament:
      4 - 4,72" / 120 mm 45,0 cal guns - 53,17lbs / 24,12kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1930 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      4 - 1,57" / 40,0 mm 39,0 cal guns - 1,86lbs / 0,84kg shells, 4 000 per gun
     Anti-air guns in deck mounts, 1930 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts
      4 - 1,57" / 40,0 mm 39,0 cal guns - 1,86lbs / 0,84kg shells, 4 000 per gun
     Anti-air guns in deck mounts, 1930 Model
     2 x 2-gun mounts on sides, forward deck aft
      2 raised mounts
      4 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1930 Model
     2 x Single mounts on sides, forward deck centre
      2 raised mounts
      Weight of broadside 228 lbs / 103 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, 23 500 shp / 17 531 Kw = 29,16 kts
   Range 7 400nm at 12,00 kts
   Bunker at max displacement = 356 tons

Complement:
   131 - 171

Cost:
   £0,708 million / $2,831 million

Distribution of weights at normal displacement:
   Armament: 61 tons, 3,6 %
      - Guns: 61 tons, 3,6 %
   Armour: 4 tons, 0,2 %
      - Armament: 4 tons, 0,2 %
   Machinery: 707 tons, 41,9 %
   Hull, fittings & equipment: 551 tons, 32,6 %
   Fuel, ammunition & stores: 289 tons, 17,1 %
   Miscellaneous weights: 77 tons, 4,6 %
      - Hull above water: 3 tons
      - On freeboard deck: 43 tons
      - Above deck: 31 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     784 lbs / 356 Kg = 14,9 x 4,7 " / 120 mm shells or 0,4 torpedoes
   Stability (Unstable if below 1.00): 1,13
   Metacentric height 1,3 ft / 0,4 m
   Roll period: 12,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 75 %
         - Recoil effect (Restricted arc if above 1.00): 0,42
   Seaboat quality  (Average = 1.00): 1,18

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,424 / 0,436
   Length to Beam Ratio: 10,00 : 1
   'Natural speed' for length: 18,47 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 64
   Bow angle (Positive = bow angles forward): 8,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   18,00 %,  20,34 ft / 6,20 m,  16,08 ft / 4,90 m
      - Forward deck:   33,00 %,  16,08 ft / 4,90 m,  12,47 ft / 3,80 m
      - Aft deck:   33,00 %,  12,47 ft / 3,80 m,  11,81 ft / 3,60 m
      - Quarter deck:   16,00 %,  11,81 ft / 3,60 m,  12,47 ft / 3,80 m
      - Average freeboard:      13,86 ft / 4,22 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 149,7 %
      - Above water (accommodation/working, high = better): 139,8 %
   Waterplane Area: 7 279 Square feet or 676 Square metres
   Displacement factor (Displacement / loading): 99 %
   Structure weight / hull surface area: 43 lbs/sq ft or 209 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,67
      - Longitudinal: 2,01
      - Overall: 0,75
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
6t for top mast rangefinder
25t for Long Range Marconi
OD
24t for 2x3TTx533 HW
10t for 1920 sonar
5t for 25 x 195 kg DC
4t reserved for paravanes, newl material, new armament.
AW
3t for climatisation