Byzantine Empire 1930 - 1931

[Jefgte]

Able to patrol anywhere along the coasts of the Empire and work with Fleet Destroyers.

Yilan class, Byzantine Empire T620 laid down 1930

Displacement:
   620 t light; 651 t standard; 695 t normal; 729 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (262,31 ft / 259,19 ft) x 25,92 ft x (9,05 / 9,34 ft)
   (79,95 m / 79,00 m) x 7,90 m  x (2,76 / 2,85 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, 1930 Model
     2 x Single 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, 1930 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      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 75 lbs / 34 kg

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 18 000 shp / 13 428 Kw = 30,28 kts
   Range 4 000nm at 10,00 kts
   Bunker at max displacement = 78 tons

Complement:
   66 - 87

Cost:
   £0,310 million / $1,238 million

Distribution of weights at normal displacement:
   Armament: 14 tons, 2,0 %
      - Guns: 14 tons, 2,0 %
   Armour: 4 tons, 0,6 %
      - Armament: 4 tons, 0,6 %
   Machinery: 347 tons, 50,0 %
   Hull, fittings & equipment: 211 tons, 30,4 %
   Fuel, ammunition & stores: 75 tons, 10,8 %
   Miscellaneous weights: 44 tons, 6,3 %
      - Hull above water: 2 tons
      - On freeboard deck: 41 tons
      - Above deck: 1 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     221 lbs / 100 Kg = 6,9 x 4,0 " / 102 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,09
   Metacentric height 0,8 ft / 0,2 m
   Roll period: 12,3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,21
   Seaboat quality  (Average = 1.00): 1,01

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: 16,10 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 %,  17,72 ft / 5,40 m,  14,11 ft / 4,30 m
      - Forward deck:   33,00 %,  14,11 ft / 4,30 m,  10,74 ft / 3,28 m
      - Aft deck:   33,00 %,  10,74 ft / 3,28 m,  10,42 ft / 3,18 m
      - Quarter deck:   16,00 %,  10,42 ft / 3,18 m,  10,74 ft / 3,28 m
      - Average freeboard:      12,08 ft / 3,68 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 168,9 %
      - Above water (accommodation/working, high = better): 137,3 %
   Waterplane Area: 4 135 Square feet or 384 Square metres
   Displacement factor (Displacement / loading): 59 %
   Structure weight / hull surface area: 25 lbs/sq ft or 123 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 2,69
      - 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
16t for 1 x 4TT x 533 HW
10t for1920 sonar
5t for 50x90kg DC
10t reserved for paravanes, new armament, minen, material
AW
2t engines ventillation


Trial speed: 31.5kts
Bonus: 1.34

[Jefgte]

Fleet Destroyer

Kobra class, Byzantine Empire D14 laid down 1930

Displacement:
   1 500 t light; 1 578 t standard; 1 861 t normal; 2 088 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (384,37 ft / 380,58 ft) x 35,40 ft x (11,79 / 12,74 ft)
   (117,15 m / 116,00 m) x 10,79 m  x (3,60 / 3,88 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
      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, 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 - 2,01lbs / 0,91kg shells, 2 000 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 2-gun mounts on sides, forward deck forward
      2 raised mounts
      Weight of broadside 216 lbs / 98 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, 35 450 shp / 26 445 Kw = 32,28 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 510 tons

Complement:
   141 - 184

Cost:
   £0,810 million / $3,241 million

Distribution of weights at normal displacement:
   Armament: 41 tons, 2,2 %
      - Guns: 41 tons, 2,2 %
   Armour: 4 tons, 0,2 %
      - Armament: 4 tons, 0,2 %
   Machinery: 930 tons, 50,0 %
   Hull, fittings & equipment: 441 tons, 23,7 %
   Fuel, ammunition & stores: 361 tons, 19,4 %
   Miscellaneous weights: 85 tons, 4,6 %
      - Hull above water: 4 tons
      - On freeboard deck: 52 tons
      - Above deck: 29 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     540 lbs / 245 Kg = 10,2 x 4,7 " / 120 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,28
   Metacentric height 1,7 ft / 0,5 m
   Roll period: 11,6 seconds
   Steadiness   - As gun platform (Average = 50 %): 77 %
         - Recoil effect (Restricted arc if above 1.00): 0,17
   Seaboat quality  (Average = 1.00): 1,11

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,410 / 0,426
   Length to Beam Ratio: 10,75 : 1
   'Natural speed' for length: 19,51 kts
   Power going to wave formation at top speed: 62 %
   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 %,  21,49 ft / 6,55 m,  16,73 ft / 5,10 m
      - Forward deck:   33,00 %,  16,73 ft / 5,10 m,  12,47 ft / 3,80 m
      - Aft deck:   33,00 %,  12,47 ft / 3,80 m,  11,48 ft / 3,50 m
      - Quarter deck:   16,00 %,  11,48 ft / 3,50 m,  11,81 ft / 3,60 m
      - Average freeboard:      13,99 ft / 4,26 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 168,9 %
      - Above water (accommodation/working, high = better): 149,8 %
   Waterplane Area: 8 343 Square feet or 775 Square metres
   Displacement factor (Displacement / loading): 79 %
   Structure weight / hull surface area: 31 lbs/sq ft or 150 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,19
      - 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
12t reserved for new material, paravanes, armament, minen.
AW
4t for climatisation

Trial speed: 33 kts
Bonus: 0.72

[Jefgte]

C14 class is a C12 class (1925) update with the new 152/50 gun/turret (HMS Ajax guns).

Nustha - Neshie, Byzantine Empire C14 laid down 1930

Displacement:
   3 000 t light; 3 206 t standard; 3 630 t normal; 3 970 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (441,25 ft / 436,35 ft) x 43,64 ft x (14,08 / 15,04 ft)
   (134,49 m / 133,00 m) x 13,30 m  x (4,29 / 4,58 m)

Armament:
      6 - 5,98" / 152 mm 50,0 cal guns - 111,99lbs / 50,80kg shells, 180 per gun
     Breech loading guns in deck and hoist mounts, 1930 Model
     3 x 2-gun mounts on centreline ends, majority aft
      8 - 4,02" / 102 mm 45,0 cal guns - 33,00lbs / 14,97kg shells, 200 per gun
     Anti-air guns in deck mounts, 1930 Model
     4 x 2-gun mounts on sides, forward evenly spread
      16 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
     Quick firing guns in deck mounts, 1930 Model
     4 x 4-gun mounts on sides, evenly spread
      4 raised mounts
      8 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1930 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 969 lbs / 439 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2,76" / 70 mm   0,79" / 20 mm      0,98" / 25 mm
   2nd:   0,39" / 10 mm         -               -
   4th:   0,24" / 6 mm         -               -
   5th:   0,24" / 6 mm         -               -

   - Box over machinery & magazines:
   1,77" / 45 mm

   - Conning towers: Forward 2,76" / 70 mm, Aft 1,18" / 30 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 34 000 shp / 25 364 Kw = 29,01 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 764 tons

Complement:
   233 - 303

Cost:
   £1,402 million / $5,606 million

Distribution of weights at normal displacement:
   Armament: 256 tons, 7,0 %
      - Guns: 256 tons, 7,0 %
   Armour: 601 tons, 16,5 %
      - Armament: 34 tons, 0,9 %
      - Armour Deck: 547 tons, 15,1 %
      - Conning Towers: 20 tons, 0,6 %
   Machinery: 1 030 tons, 28,4 %
   Hull, fittings & equipment: 996 tons, 27,4 %
   Fuel, ammunition & stores: 630 tons, 17,4 %
   Miscellaneous weights: 117 tons, 3,2 %
      - Hull below water: 15 tons
      - On freeboard deck: 52 tons
      - Above deck: 50 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     2 459 lbs / 1 115 Kg = 23,0 x 6,0 " / 152 mm shells or 0,8 torpedoes
   Stability (Unstable if below 1.00): 1,07
   Metacentric height 1,7 ft / 0,5 m
   Roll period: 14,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0,66
   Seaboat quality  (Average = 1.00): 1,05

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,474 / 0,485
   Length to Beam Ratio: 10,00 : 1
   'Natural speed' for length: 20,89 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 12,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   17,50 %,  23,03 ft / 7,02 m,  17,06 ft / 5,20 m
      - Forward deck:   33,00 %,  17,06 ft / 5,20 m,  13,45 ft / 4,10 m
      - Aft deck:   33,00 %,  13,45 ft / 4,10 m,  12,14 ft / 3,70 m
      - Quarter deck:   16,50 %,  12,14 ft / 3,70 m,  12,14 ft / 3,70 m
      - Average freeboard:      14,66 ft / 4,47 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 116,2 %
      - Above water (accommodation/working, high = better): 142,1 %
   Waterplane Area: 12 395 Square feet or 1 152 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 58 lbs/sq ft or 281 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,71
      - Longitudinal: 1,10
      - Overall: 0,75
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
25t for Long Range Marconi
25t for top mast rangefinder - FC1924
OD
32t for 2x4TTx533HW
20t reserved for new materials, armaments or 20 minen
AW
climatisation
BW
15t for additionnal pumps

[TacCovert4]

It's a decent Colonial cruiser.   It's got guns and is more capable than a big DD.  But not by a whole lot besides range.   And that 45mm of armor is just enough to set the fuses on the main cruiser armament of everyone else.

[Kaiser Kirk]

It's quite similar to the Sayidda Patrol Frigates in result. It is just very difficult to fit in much on the 3000/0.75 ton hull.
For me, my ships are effectively storyline, and potentially a raider threat, not meant to accompany my fleet....unless my fleet has lost a great deal of vessels, in which case they would become screening ships to keep torpedo attackers distant.

[Jefgte]

It is true that the limit of 3000 t is restrictive. A classic Byzantine cruiser with 6x191, B100, 29 kts would really be a cruiser...but 4500t.

[Kaiser Kirk]

Snip has indicated that the Tech tree was supposed to have 1930s and 1940s technologies added to it.

I am thinking that when I have some time I will go back through Friedman's Cruisers and see if there's construction changes that would make moving those 0.75/0.9 cruiser tonnage limits upwards a valid concept.  Likewise look at a cruiser tech that allows turrets.

[Jefgte]

...It's got guns and is more capable than a big DD.  But not by a whole lot besides range.   And that 45mm of armor is just enough to set the fuses on the main cruiser armament of everyone else.

Nustha - Neshie, Byzantine Empire C14 laid down 1930

Displacement:
   3 000 t light; 3 177 t standard; 3 600 t normal; 3 938 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (441,25 ft / 436,35 ft) x 43,64 ft x (13,96 / 14,91 ft)
   (134,49 m / 133,00 m) x 13,30 m  x (4,26 / 4,55 m)

Armament:
      6 - 5,98" / 152 mm 50,0 cal guns - 111,99lbs / 50,80kg shells, 180 per gun
     Breech loading guns in deck and hoist mounts, 1930 Model
     3 x 2-gun mounts on centreline ends, majority aft
      16 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
     Quick firing guns in deck mounts, 1930 Model
     4 x 4-gun mounts on sides, evenly spread
      4 raised mounts
      16 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1930 Model
     8 x Single mounts on side ends, evenly spread
      8 raised mounts
      Weight of broadside 705 lbs / 320 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,15" / 80 mm   324,80 ft / 99,00 m   9,19 ft / 2,80 m
   Ends:   Unarmoured
     Main Belt covers 115 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1,77" / 45 mm   0,79" / 20 mm      0,98" / 25 mm
   4th:   0,24" / 6 mm         -               -
   5th:   0,24" / 6 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 1,18" / 30 mm

   - Conning towers: Forward 2,76" / 70 mm, Aft 1,18" / 30 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 34 000 shp / 25 364 Kw = 29,04 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 760 tons

Complement:
   232 - 302

Cost:
   £1,350 million / $5,399 million

Distribution of weights at normal displacement:
   Armament: 208 tons, 5,8 %
      - Guns: 208 tons, 5,8 %
   Armour: 651 tons, 18,1 %
      - Belts: 377 tons, 10,5 %
      - Armament: 31 tons, 0,9 %
      - Armour Deck: 223 tons, 6,2 %
      - Conning Towers: 20 tons, 0,6 %
   Machinery: 1 030 tons, 28,6 %
   Hull, fittings & equipment: 998 tons, 27,7 %
   Fuel, ammunition & stores: 599 tons, 16,7 %
   Miscellaneous weights: 113 tons, 3,1 %
      - Hull below water: 15 tons
      - On freeboard deck: 52 tons
      - Above deck: 46 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     2 577 lbs / 1 169 Kg = 24,1 x 6,0 " / 152 mm shells or 0,8 torpedoes
   Stability (Unstable if below 1.00): 1,08
   Metacentric height 1,7 ft / 0,5 m
   Roll period: 14,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0,53
   Seaboat quality  (Average = 1.00): 1,05

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,474 / 0,485
   Length to Beam Ratio: 10,00 : 1
   'Natural speed' for length: 20,89 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 12,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   17,50 %,  23,03 ft / 7,02 m,  17,06 ft / 5,20 m
      - Forward deck:   33,00 %,  17,06 ft / 5,20 m,  13,45 ft / 4,10 m
      - Aft deck:   33,00 %,  13,45 ft / 4,10 m,  12,14 ft / 3,70 m
      - Quarter deck:   16,50 %,  12,14 ft / 3,70 m,  12,14 ft / 3,70 m
      - Average freeboard:      14,66 ft / 4,47 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 113,6 %
      - Above water (accommodation/working, high = better): 142,7 %
   Waterplane Area: 12 395 Square feet or 1 152 Square metres
   Displacement factor (Displacement / loading): 102 %
   Structure weight / hull surface area: 56 lbs/sq ft or 274 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,72
      - Longitudinal: 1,07
      - Overall: 0,75
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
21t for Long Range Marconi
25t for top mast rangefinder - FC1924
OD
32t for 2x4TTx533HW
20t reserved for new materials, armaments or 20 minen
AW
climatisation
BW
15t for additionnal pumps

[Kaiser Kirk]

That one is interesting.  Better armored but lighter armed than the Sayidda, and most of that armament is aft.

I will note that if you're concerned with hull dimensions, you're combining a narrow BC with a two-gun 152mm mount and a 13.3m beam.

Omaha probably had a similar BC, but she had a twin mount and a broader beam at 16.8.
The Condottieri class

That is why my Sayidda had single mounts, and then casements built into the superstructure-I felt the beam/BC combo to narrow to justify twin/two-gun mounts.

As a foe, those guns are mostly aft and tot superimposed, and with two-gun mounts, hard to shoot around each other even if offset. So limited forward firepower, and questionable aft.

Both your ship and mine have a 6 gun broadside, your armor is better..mostly. The 165mm is 30% heavier than the 152, so the the ship's armor may been they are both vulnerable to each other at about the same range.

...makes me wonder about the Sayidda's successor, the Atossa.

[TacCovert4]

...It's got guns and is more capable than a big DD.  But not by a whole lot besides range.   And that 45mm of armor is just enough to set the fuses on the main cruiser armament of everyone else.

Nustha - Neshie, Byzantine Empire C14 laid down 1930

Displacement:
   3 000 t light; 3 177 t standard; 3 600 t normal; 3 938 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (441,25 ft / 436,35 ft) x 43,64 ft x (13,96 / 14,91 ft)
   (134,49 m / 133,00 m) x 13,30 m  x (4,26 / 4,55 m)

Armament:
      6 - 5,98" / 152 mm 50,0 cal guns - 111,99lbs / 50,80kg shells, 180 per gun
     Breech loading guns in deck and hoist mounts, 1930 Model
     3 x 2-gun mounts on centreline ends, majority aft
      16 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
     Quick firing guns in deck mounts, 1930 Model
     4 x 4-gun mounts on sides, evenly spread
      4 raised mounts
      16 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1930 Model
     8 x Single mounts on side ends, evenly spread
      8 raised mounts
      Weight of broadside 705 lbs / 320 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,15" / 80 mm   324,80 ft / 99,00 m   9,19 ft / 2,80 m
   Ends:   Unarmoured
     Main Belt covers 115 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1,77" / 45 mm   0,79" / 20 mm      0,98" / 25 mm
   4th:   0,24" / 6 mm         -               -
   5th:   0,24" / 6 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 1,18" / 30 mm

   - Conning towers: Forward 2,76" / 70 mm, Aft 1,18" / 30 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 34 000 shp / 25 364 Kw = 29,04 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 760 tons

Complement:
   232 - 302

Cost:
   £1,350 million / $5,399 million

Distribution of weights at normal displacement:
   Armament: 208 tons, 5,8 %
      - Guns: 208 tons, 5,8 %
   Armour: 651 tons, 18,1 %
      - Belts: 377 tons, 10,5 %
      - Armament: 31 tons, 0,9 %
      - Armour Deck: 223 tons, 6,2 %
      - Conning Towers: 20 tons, 0,6 %
   Machinery: 1 030 tons, 28,6 %
   Hull, fittings & equipment: 998 tons, 27,7 %
   Fuel, ammunition & stores: 599 tons, 16,7 %
   Miscellaneous weights: 113 tons, 3,1 %
      - Hull below water: 15 tons
      - On freeboard deck: 52 tons
      - Above deck: 46 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     2 577 lbs / 1 169 Kg = 24,1 x 6,0 " / 152 mm shells or 0,8 torpedoes
   Stability (Unstable if below 1.00): 1,08
   Metacentric height 1,7 ft / 0,5 m
   Roll period: 14,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0,53
   Seaboat quality  (Average = 1.00): 1,05

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,474 / 0,485
   Length to Beam Ratio: 10,00 : 1
   'Natural speed' for length: 20,89 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 12,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   17,50 %,  23,03 ft / 7,02 m,  17,06 ft / 5,20 m
      - Forward deck:   33,00 %,  17,06 ft / 5,20 m,  13,45 ft / 4,10 m
      - Aft deck:   33,00 %,  13,45 ft / 4,10 m,  12,14 ft / 3,70 m
      - Quarter deck:   16,50 %,  12,14 ft / 3,70 m,  12,14 ft / 3,70 m
      - Average freeboard:      14,66 ft / 4,47 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 113,6 %
      - Above water (accommodation/working, high = better): 142,7 %
   Waterplane Area: 12 395 Square feet or 1 152 Square metres
   Displacement factor (Displacement / loading): 102 %
   Structure weight / hull surface area: 56 lbs/sq ft or 274 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,72
      - Longitudinal: 1,07
      - Overall: 0,75
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
21t for Long Range Marconi
25t for top mast rangefinder - FC1924
OD
32t for 2x4TTx533HW
20t reserved for new materials, armaments or 20 minen
AW
climatisation
BW
15t for additionnal pumps

The belt is a bit narrow, but that's the price you're going to pay on a hull this small, it just is what it is.  I think it's a more capable little cruiser, as it's going to soak up fire from DDs just fine, and HE shells from larger ships don't have a chance of penetrating. 

[Jefgte]

Testing with 4x191

AGB3000, Byzantine Empire C14- Colonial Armored Gun Boat laid down 1930

Displacement:
   3 000 t light; 3 154 t standard; 3 406 t normal; 3 607 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (409,95 ft / 406,82 ft) x 47,83 ft x (12,50 / 13,05 ft)
   (124,95 m / 124,00 m) x 14,58 m  x (3,81 / 3,98 m)

Armament:
      4 - 7,52" / 191 mm 45,0 cal guns - 200,00lbs / 90,72kg shells, 110 per gun
     Breech loading guns in deck and hoist mounts, 1930 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      6 - 4,02" / 102 mm 45,0 cal guns - 33,00lbs / 14,97kg shells, 200 per gun
     Quick firing guns in deck mounts, 1930 Model
     6 x Single mounts on sides, forward evenly spread
      8 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 600 per gun
     Anti-air guns in deck mounts, 1930 Model
     4 x 2-gun mounts on side ends, evenly spread
      4 raised mounts
      8 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 3 000 per gun
     Machine guns in deck mounts, 1930 Model
     4 x 2-gun mounts on sides, forward evenly spread
      4 raised mounts
      Weight of broadside 1 015 lbs / 460 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,15" / 80 mm   269,03 ft / 82,00 m   9,84 ft / 3,00 m
   Ends:   1,18" / 30 mm   134,51 ft / 41,00 m   7,87 ft / 2,40 m
     3,28 ft / 1,00 m Unarmoured ends
     Main Belt covers 102 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2,76" / 70 mm   1,18" / 30 mm      1,77" / 45 mm
   2nd:   0,39" / 10 mm         -               -
   3rd:   0,24" / 6 mm         -               -
   4th:   0,24" / 6 mm         -               -

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

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 26 065 shp / 19 444 Kw = 27,00 kts
   Range 6 000nm at 12,00 kts
   Bunker at max displacement = 452 tons

Complement:
   222 - 289

Cost:
   £1,282 million / $5,129 million

Distribution of weights at normal displacement:
   Armament: 263 tons, 7,7 %
      - Guns: 263 tons, 7,7 %
   Armour: 780 tons, 22,9 %
      - Belts: 393 tons, 11,5 %
      - Armament: 60 tons, 1,8 %
      - Armour Deck: 306 tons, 9,0 %
      - Conning Towers: 21 tons, 0,6 %
   Machinery: 790 tons, 23,2 %
   Hull, fittings & equipment: 1 070 tons, 31,4 %
   Fuel, ammunition & stores: 406 tons, 11,9 %
   Miscellaneous weights: 97 tons, 2,8 %
      - Hull below water: 15 tons
      - Hull above water: 3 tons
      - On freeboard deck: 28 tons
      - Above deck: 51 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3 332 lbs / 1 511 Kg = 15,7 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 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,73
   Seaboat quality  (Average = 1.00): 1,01

Hull form characteristics:
   Hull has raised forecastle, rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,490 / 0,497
   Length to Beam Ratio: 8,50 : 1
   'Natural speed' for length: 20,17 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 8,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   17,50 %,  22,21 ft / 6,77 m,  18,37 ft / 5,60 m
      - Forward deck:   33,50 %,  18,04 ft / 5,50 m,  14,76 ft / 4,50 m
      - Aft deck:   33,50 %,  14,44 ft / 4,40 m,  12,47 ft / 3,80 m
      - Quarter deck:   15,50 %,  12,47 ft / 3,80 m,  13,12 ft / 4,00 m
      - Average freeboard:      15,47 ft / 4,71 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 101,1 %
      - Above water (accommodation/working, high = better): 164,6 %
   Waterplane Area: 12 849 Square feet or 1 194 Square metres
   Displacement factor (Displacement / loading): 102 %
   Structure weight / hull surface area: 63 lbs/sq ft or 307 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,71
      - Longitudinal: 1,24
      - Overall: 0,75
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
25t for Long Range Marconi
26t for top mast rangefinder - FC1924
OD
16t for 2 x 2 TT x 21" HW
12t reserved for new materials, armaments.
AW
Climatisation
BW
15t for additionnal pumps

[TacCovert4]

I like it better than the 6x6in.

The bigger guns give a nice fat punch.  And losing 2kts is worth it for a punchy ship with ok armor.

[Jefgte]

...And losing 2kts is worth it for a punchy ship with ok armor.

27 kts is the speed of 24 Byzantine colonial cruisers.

[Jefgte]

Update 1926 C11 class to 1930 C13 class. Always 8000t & 6T2x191

Omatha - Ohyra, Byzantine Empire C13 laid down 1930

Displacement:
   8 000 t light; 8 485 t standard; 9 317 t normal; 9 982 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (552,73 ft / 547,57 ft) x 62,01 ft x (19,68 / 20,72 ft)
   (168,47 m / 166,90 m) x 18,90 m  x (6,00 / 6,32 m)

Armament:
      12 - 7,52" / 191 mm 45,0 cal guns - 200,00lbs / 90,72kg shells, 160 per gun
     Breech loading guns in deck and hoist mounts, 1930 Model
     6 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      12 - 4,72" / 120 mm 45,0 cal guns - 50,00lbs / 22,68kg shells, 200 per gun
     Breech loading guns in deck and hoist mounts, 1930 Model
     6 x 2-gun mounts on sides, evenly spread
      16 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 000 per gun
     Quick firing guns in deck mounts, 1930 Model
     8 x 2-gun mounts on sides, evenly spread
      8 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 3 033 lbs / 1 376 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,94" / 100 mm   360,89 ft / 110,00 m   9,84 ft / 3,00 m
   Ends:   1,38" / 35 mm   183,73 ft / 56,00 m   7,87 ft / 2,40 m
     2,95 ft / 0,90 m Unarmoured ends
     Main Belt covers 101 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5,51" / 140 mm   0,98" / 25 mm      1,97" / 50 mm
   2nd:   0,39" / 10 mm         -               -
   4th:   0,24" / 6 mm         -               -
   5th:   0,24" / 6 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 1,77" / 45 mm
   Forecastle: 1,18" / 30 mm  Quarter deck: 1,18" / 30 mm

   - Conning towers: Forward 3,94" / 100 mm, Aft 2,76" / 70 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 66 000 shp / 49 236 Kw = 30,11 kts
   Range 11 000nm at 12,00 kts
   Bunker at max displacement = 1 497 tons

Complement:
   473 - 616

Cost:
   £3,615 million / $14,459 million

Distribution of weights at normal displacement:
   Armament: 853 tons, 9,2 %
      - Guns: 853 tons, 9,2 %
   Armour: 1 530 tons, 16,4 %
      - Belts: 651 tons, 7,0 %
      - Armament: 118 tons, 1,3 %
      - Armour Deck: 696 tons, 7,5 %
      - Conning Towers: 64 tons, 0,7 %
   Machinery: 2 000 tons, 21,5 %
   Hull, fittings & equipment: 3 368 tons, 36,1 %
   Fuel, ammunition & stores: 1 317 tons, 14,1 %
   Miscellaneous weights: 249 tons, 2,7 %
      - Hull below water: 40 tons
      - On freeboard deck: 104 tons
      - Above deck: 105 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     10 297 lbs / 4 670 Kg = 48,4 x 7,5 " / 191 mm shells or 1,5 torpedoes
   Stability (Unstable if below 1.00): 1,03
   Metacentric height 2,6 ft / 0,8 m
   Roll period: 16,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,84
   Seaboat quality  (Average = 1.00): 1,05

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,488 / 0,497
   Length to Beam Ratio: 8,83 : 1
   'Natural speed' for length: 23,40 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   Bow angle (Positive = bow angles forward): 12,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   17,00 %,  24,28 ft / 7,40 m,  20,67 ft / 6,30 m
      - Forward deck:   34,00 %,  20,67 ft / 6,30 m,  17,06 ft / 5,20 m
      - Aft deck:   33,00 %,  17,06 ft / 5,20 m,  16,40 ft / 5,00 m
      - Quarter deck:   16,00 %,  16,40 ft / 5,00 m,  16,40 ft / 5,00 m
      - Average freeboard:      18,32 ft / 5,58 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 101,0 %
      - Above water (accommodation/working, high = better): 160,5 %
   Waterplane Area: 22 379 Square feet or 2 079 Square metres
   Displacement factor (Displacement / loading): 107 %
   Structure weight / hull surface area: 112 lbs/sq ft or 546 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,96
      - Longitudinal: 1,47
      - 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 Long Range Marconi
80t for top mast rangefinder - FC1924
OD
32t for 2x4TTx21" HW
45t for 2 seaplanes + cata
27t reserved
AW
Climatisatisation
BW
40t for additionnal pumps

[Jefgte]

Light update for the repair ship from 1929 to 1930
2 ships in the 1930 Building Plan

Workshop ship, Byzantine Empire Repair ship laid down 1930

Displacement:
   2 000 t light; 2 068 t standard; 2 343 t normal; 2 564 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (259,19 ft / 259,19 ft) x 45,93 ft x (11,18 / 12,06 ft)
   (79,00 m / 79,00 m) x 14,00 m  x (3,41 / 3,67 m)

Armament:
      2 - 4,02" / 102 mm 45,0 cal guns - 33,00lbs / 14,97kg shells, 200 per gun
     Anti-air guns in deck mounts, 1930 Model
     2 x Single mounts on centreline ends, evenly spread
      8 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 500 per gun
     Anti-air guns in deck mounts, 1930 Model
     4 x 2-gun mounts on side ends, evenly spread
      4 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 3 000 per gun
     Machine guns in deck mounts, 1930 Model
     2 x 2-gun mounts on sides, forward deck aft
      2 raised mounts
      Weight of broadside 82 lbs / 37 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 = 21,01 kts
   Range 8 000nm at 12,00 kts
   Bunker at max displacement = 496 tons

Complement:
   167 - 218

Cost:
   £0,494 million / $1,977 million

Distribution of weights at normal displacement:
   Armament: 16 tons, 0,7 %
      - Guns: 16 tons, 0,7 %
   Armour: 1 tons, 0,0 %
      - Armament: 1 tons, 0,0 %
   Machinery: 315 tons, 13,4 %
   Hull, fittings & equipment: 684 tons, 29,2 %
   Fuel, ammunition & stores: 343 tons, 14,7 %
   Miscellaneous weights: 985 tons, 42,0 %
      - 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):
     3 944 lbs / 1 789 Kg = 121,8 x 4,0 " / 102 mm shells or 1,1 torpedoes
   Stability (Unstable if below 1.00): 1,45
   Metacentric height 2,9 ft / 0,9 m
   Roll period: 11,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 74 %
         - Recoil effect (Restricted arc if above 1.00): 0,02
   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): 89,6 %
      - Above water (accommodation/working, high = better): 141,8 %
   Waterplane Area: 8 838 Square feet or 821 Square metres
   Displacement factor (Displacement / loading): 142 %
   Structure weight / hull surface area: 54 lbs/sq ft or 264 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,90
      - Longitudinal: 2,52
      - 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