Byzantine Empire 1925...

[Jefgte]

Update AGB3000t Mustha class from 24kts to 25kts TGB speed.
6x191 => 5x191


Mustha-Mesie, Byzantine Empire Colonial Armored Gun Boat laid down 1928

Displacement:
   3 000 t light; 3 191 t standard; 3 408 t normal; 3 581 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (409,45 ft / 406,82 ft) x 47,83 ft x (12,26 / 12,73 ft)
   (124,80 m / 124,00 m) x 14,58 m  x (3,74 / 3,88 m)

Armament:
      3 - 7,52" / 191 mm 45,0 cal guns - 200,00lbs / 90,72kg shells, 150 per gun
     Breech loading guns in deck and hoist mounts, 1928 Model
     3 x Single mounts on centreline ends, majority aft
      2 - 7,52" / 191 mm 45,0 cal guns - 200,00lbs / 90,72kg shells, 150 per gun
     Breech loading guns in deck and hoist mounts, 1928 Model
     2 x Single mounts on sides, forward deck forward
      6 - 4,72" / 120 mm 45,0 cal guns - 50,00lbs / 22,68kg shells, 180 per gun
     Quick firing guns in deck and hoist mounts, 1928 Model
     6 x Single mounts on sides, evenly spread
      8 - 1,57" / 40,0 mm 39,0 cal guns - 1,85lbs / 0,84kg shells, 1 000 per gun
     Anti-air guns in deck mounts, 1928 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, 4 000 per gun
     Machine guns in deck mounts, 1928 Model
     8 x Single mounts on side ends, evenly spread
      8 raised mounts
      Weight of broadside 1 315 lbs / 597 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,94" / 100 mm   265,75 ft / 81,00 m   9,84 ft / 3,00 m
   Ends:   1,18" / 30 mm   137,80 ft / 42,00 m   8,53 ft / 2,60 m
     3,28 ft / 1,00 m Unarmoured ends
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2,76" / 70 mm   1,18" / 30 mm      1,97" / 50 mm
   2nd:   2,76" / 70 mm   1,18" / 30 mm      1,97" / 50 mm
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 1,38" / 35 mm
   Forecastle: 1,18" / 30 mm  Quarter deck: 1,18" / 30 mm

   - Conning towers: Forward 3,94" / 100 mm, Aft 1,18" / 30 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 19 400 shp / 14 473 Kw = 25,05 kts
   Range 5 000nm at 12,00 kts
   Bunker at max displacement = 391 tons

Complement:
   222 - 289

Cost:
   £1,226 million / $4,905 million

Distribution of weights at normal displacement:
   Armament: 371 tons, 10,9 %
      - Guns: 371 tons, 10,9 %
   Armour: 908 tons, 26,6 %
      - Belts: 481 tons, 14,1 %
      - Armament: 78 tons, 2,3 %
      - Armour Deck: 325 tons, 9,5 %
      - Conning Towers: 25 tons, 0,7 %
   Machinery: 600 tons, 17,6 %
   Hull, fittings & equipment: 1 014 tons, 29,8 %
   Fuel, ammunition & stores: 408 tons, 12,0 %
   Miscellaneous weights: 107 tons, 3,1 %
      - Hull below water: 15 tons
      - Hull above water: 15 tons
      - On freeboard deck: 40 tons
      - Above deck: 37 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3 442 lbs / 1 561 Kg = 16,2 x 7,5 " / 191 mm shells or 1,0 torpedoes
   Stability (Unstable if below 1.00): 1,08
   Metacentric height 1,9 ft / 0,6 m
   Roll period: 14,5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,72
   Seaboat quality  (Average = 1.00): 1,06

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,500 / 0,506
   Length to Beam Ratio: 8,50 : 1
   'Natural speed' for length: 20,17 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 66
   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 %,  18,70 ft / 5,70 m,  15,09 ft / 4,60 m
      - Forward deck:   33,00 %,  15,09 ft / 4,60 m,  13,12 ft / 4,00 m
      - Aft deck:   33,00 %,  13,12 ft / 4,00 m,  12,47 ft / 3,80 m
      - Quarter deck:   16,00 %,  12,47 ft / 3,80 m,  12,80 ft / 3,90 m
      - Average freeboard:      13,88 ft / 4,23 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 94,5 %
      - Above water (accommodation/working, high = better): 149,6 %
   Waterplane Area: 12 966 Square feet or 1 205 Square metres
   Displacement factor (Displacement / loading): 98 %
   Structure weight / hull surface area: 65 lbs/sq ft or 316 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,72
      - Longitudinal: 1,08
      - Overall: 0,75
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

37t for top mast rangefinder
15t for climatisation
15t for Additionnal pumps
24t for 2x3TTx533 HW
16t reserved for new material, armament...

[Jefgte]

Rocky loves small boats.

Jef loves Panzerschiff style.

CHAGB7200, Byzantine Empire Colonial  Heavy Armored Gunboat laid down 1928

Displacement:
   7 200 t light; 7 636 t standard; 8 001 t normal; 8 293 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (409,24 ft / 406,82 ft) x 65,62 ft x (19,50 / 20,05 ft)
   (124,74 m / 124,00 m) x 20,00 m  x (5,94 / 6,11 m)

Armament:
      6 - 10,00" / 254 mm 45,0 cal guns - 500,01lbs / 226,80kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1928 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 and hoist mounts, 1928 Model
     6 x 2-gun mounts on sides, evenly spread
      8 - 1,57" / 40,0 mm 39,0 cal guns - 1,86lbs / 0,84kg shells, 1 000 per gun
     Anti-air guns in deck mounts, 1928 Model
     4 x Single mounts on side ends, 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, 1928 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 3 616 lbs / 1 640 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   6,30" / 160 mm   265,75 ft / 81,00 m   9,84 ft / 3,00 m
   Ends:   1,38" / 35 mm   141,08 ft / 43,00 m   9,02 ft / 2,75 m
   Upper:   3,54" / 90 mm   265,75 ft / 81,00 m   9,19 ft / 2,80 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
      1,57" / 40 mm   265,75 ft / 81,00 m   18,04 ft / 5,50 m
   Beam between torpedo bulkheads 52,49 ft / 16,00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7,87" / 200 mm   2,36" / 60 mm      4,72" / 120 mm
   2nd:   0,39" / 10 mm         -               -
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 2,36" / 60 mm
   Forecastle: 1,38" / 35 mm  Quarter deck: 1,38" / 35 mm

   - Conning towers: Forward 7,87" / 200 mm, Aft 3,94" / 100 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 30 000 shp / 22 380 Kw = 24,14 kts
   Range 5 000nm at 12,00 kts
   Bunker at max displacement = 657 tons

Complement:
   422 - 549

Cost:
   £2,778 million / $11,113 million

Distribution of weights at normal displacement:
   Armament: 1 016 tons, 12,7 %
      - Guns: 1 016 tons, 12,7 %
   Armour: 2 605 tons, 32,6 %
      - Belts: 1 160 tons, 14,5 %
      - Torpedo bulkhead: 279 tons, 3,5 %
      - Armament: 314 tons, 3,9 %
      - Armour Deck: 750 tons, 9,4 %
      - Conning Towers: 102 tons, 1,3 %
   Machinery: 934 tons, 11,7 %
   Hull, fittings & equipment: 2 388 tons, 29,8 %
   Fuel, ammunition & stores: 801 tons, 10,0 %
   Miscellaneous weights: 257 tons, 3,2 %
      - Hull below water: 36 tons
      - Hull above water: 36 tons
      - On freeboard deck: 58 tons
      - Above deck: 127 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     10 838 lbs / 4 916 Kg = 21,7 x 10,0 " / 254 mm shells or 2,4 torpedoes
   Stability (Unstable if below 1.00): 1,07
   Metacentric height 3,0 ft / 0,9 m
   Roll period: 15,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,71
   Seaboat quality  (Average = 1.00): 1,07

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,538 / 0,542
   Length to Beam Ratio: 6,20 : 1
   'Natural speed' for length: 20,17 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 66
   Bow angle (Positive = bow angles forward): 6,00 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 %,  22,97 ft / 7,00 m,  19,36 ft / 5,90 m
      - Forward deck:   33,00 %,  19,36 ft / 5,90 m,  15,75 ft / 4,80 m
      - Aft deck:   33,00 %,  15,75 ft / 4,80 m,  14,44 ft / 4,40 m
      - Quarter deck:   16,50 %,  14,44 ft / 4,40 m,  14,44 ft / 4,40 m
      - Average freeboard:      16,79 ft / 5,12 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 98,7 %
      - Above water (accommodation/working, high = better): 135,7 %
   Waterplane Area: 18 422 Square feet or 1 711 Square metres
   Displacement factor (Displacement / loading): 100 %
   Structure weight / hull surface area: 122 lbs/sq ft or 597 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,91
      - Longitudinal: 2,30
      - 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 Long Range Marconi
102t for top mast rangefinder - FC1924

24t for 2x3TTx21" HW
33t reserved for new equipment, floatplane...

36t for climatisation
36t for additionnal pumps

[Jefgte]

Deck armor, range have been reduced and various adjustments have brought the tonnage down to 6800t.

CHAGB6800, Byzantine Empire Colonial  Heavy Armored Gunboat laid down 1928

Displacement:
   6 800 t light; 7 227 t standard; 7 548 t normal; 7 806 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (409,24 ft / 406,82 ft) x 65,62 ft x (18,40 / 18,88 ft)
   (124,74 m / 124,00 m) x 20,00 m  x (5,61 / 5,76 m)

Armament:
      6 - 10,00" / 254 mm 45,0 cal guns - 500,01lbs / 226,80kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1928 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 and hoist mounts, 1928 Model
     6 x 2-gun mounts on sides, evenly spread
      8 - 1,57" / 40,0 mm 39,0 cal guns - 1,85lbs / 0,84kg shells, 1 000 per gun
     Anti-air guns in deck mounts, 1928 Model
     4 x Single mounts on side ends, 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, 1928 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 3 615 lbs / 1 640 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   6,30" / 160 mm   269,03 ft / 82,00 m   9,84 ft / 3,00 m
   Ends:   1,38" / 35 mm   134,51 ft / 41,00 m   9,02 ft / 2,75 m
     3,28 ft / 1,00 m Unarmoured ends
   Upper:   1,38" / 35 mm   269,03 ft / 82,00 m   9,19 ft / 2,80 m
     Main Belt covers 102 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
      1,57" / 40 mm   269,03 ft / 82,00 m   16,40 ft / 5,00 m
   Beam between torpedo bulkheads 52,49 ft / 16,00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7,87" / 200 mm   2,36" / 60 mm      4,72" / 120 mm
   2nd:   0,39" / 10 mm         -               -
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 1,97" / 50 mm
   Forecastle: 1,38" / 35 mm  Quarter deck: 1,38" / 35 mm

   - Conning towers: Forward 7,87" / 200 mm, Aft 3,94" / 100 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 28 300 shp / 21 112 Kw = 24,00 kts
   Range 4 500nm at 12,00 kts
   Bunker at max displacement = 579 tons

Complement:
   404 - 526

Cost:
   £2,696 million / $10,786 million

Distribution of weights at normal displacement:
   Armament: 1 016 tons, 13,5 %
      - Guns: 1 016 tons, 13,5 %
   Armour: 2 240 tons, 29,7 %
      - Belts: 932 tons, 12,3 %
      - Torpedo bulkhead: 257 tons, 3,4 %
      - Armament: 314 tons, 4,2 %
      - Armour Deck: 639 tons, 8,5 %
      - Conning Towers: 98 tons, 1,3 %
   Machinery: 881 tons, 11,7 %
   Hull, fittings & equipment: 2 405 tons, 31,9 %
   Fuel, ammunition & stores: 749 tons, 9,9 %
   Miscellaneous weights: 257 tons, 3,4 %
      - Hull below water: 36 tons
      - Hull above water: 36 tons
      - On freeboard deck: 58 tons
      - Above deck: 127 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     10 328 lbs / 4 685 Kg = 20,7 x 10,0 " / 254 mm shells or 2,2 torpedoes
   Stability (Unstable if below 1.00): 1,09
   Metacentric height 3,1 ft / 1,0 m
   Roll period: 15,6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,71
   Seaboat quality  (Average = 1.00): 1,06

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,538 / 0,542
   Length to Beam Ratio: 6,20 : 1
   'Natural speed' for length: 20,17 kts
   Power going to wave formation at top speed: 58 %
   Trim (Max stability = 0, Max steadiness = 100): 66
   Bow angle (Positive = bow angles forward): 6,00 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 %,  22,97 ft / 7,00 m,  19,36 ft / 5,90 m
      - Forward deck:   33,00 %,  19,36 ft / 5,90 m,  15,75 ft / 4,80 m
      - Aft deck:   33,00 %,  15,75 ft / 4,80 m,  14,44 ft / 4,40 m
      - Quarter deck:   16,50 %,  14,44 ft / 4,40 m,  14,44 ft / 4,40 m
      - Average freeboard:      16,79 ft / 5,12 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 101,6 %
      - Above water (accommodation/working, high = better): 141,8 %
   Waterplane Area: 18 422 Square feet or 1 711 Square metres
   Displacement factor (Displacement / loading): 100 %
   Structure weight / hull surface area: 124 lbs/sq ft or 604 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,91
      - Longitudinal: 2,26
      - 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 Long Range Marconi
102t for top mast rangefinder - FC1924

24t for 2x3TTx21" HW
33t reserved for new equipment, floatplane...

36t for climatisation
36t for additionnal pumps

[Kaiser Kirk]

Generally I avoid commenting on Byzantine ships, as I'd like to see them armored with satin sheets and armed with pillows...
However, many of your designs are very compact and so I like to examine them to see how you're doing it :)
For these I keep coming up in the 12-13,000 ton range for my parameters, which is vastly larger....

But trying to understand CHAGB6800..
There is an upper belt, ..but a single protected deck.
So there's no armor deck capping the upper belt.
is the idea of the upper belt to guard against diving shells coming over the main belt and landing on the slope of the protective deck?


Also, the TDS is 5.0m which seemed odd, they normally default to an odd height.
Putting in the hull parameters, you shaved off 0.11m... so presumably it does not even come up to the waterline?
I realize I do overkill by extending mine to the bottom of my armor decks, but trimming it seems like a curious choice.

[Jefgte]

...But trying to understand CHAGB6800..
There is an upper belt, ..but a single protected deck.
So there's no armor deck capping the upper belt.
is the idea of the upper belt to guard against diving shells coming over the main belt and landing on the slope of the protective deck?


Also, the TDS is 5.0m which seemed odd, they normally default to an odd height.
Putting in the hull parameters, you shaved off 0.11m... so presumably it does not even come up to the waterline?
I realize I do overkill by extending mine to the bottom of my armor decks, but trimming it seems like a curious choice.

It's often quick SS that I post to see the feasibility of certain ideas.
If this class is built, the SS will be adjusted.

[The Rock Doctor]

Yeah, I was intrigued enough to design a near-duplicate, but then I started tweaking and it grew to 13,000 t.

[Jefgte]

Possible Colonial Armored Gun Boat

With 3T2x152

M class, Byzantine Empire AGB3000 laid down 1928

Displacement:
   3 000 t light; 3 193 t standard; 3 388 t normal; 3 544 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (409,28 ft / 406,82 ft) x 45,93 ft x (13,11 / 13,56 ft)
   (124,75 m / 124,00 m) x 14,00 m  x (4,00 / 4,13 m)

Armament:
      6 - 5,98" / 152 mm 45,0 cal guns - 108,07lbs / 49,02kg shells, 190 per gun
     Quick firing guns in deck and hoist mounts, 1928 Model
     3 x 2-gun mounts on centreline ends, majority aft
      8 - 4,72" / 120 mm 45,0 cal guns - 53,18lbs / 24,12kg shells, 220 per gun
     Quick firing guns in deck mounts, 1928 Model
     4 x 2-gun mounts on sides, forward evenly spread
      4 - 1,57" / 40,0 mm 39,0 cal guns - 1,85lbs / 0,84kg shells, 1 000 per gun
     Quick firing guns in deck mounts, 1928 Model
     4 x Single mounts on sides, forward evenly spread
      4 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, 1928 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 1 082 lbs / 491 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,54" / 90 mm   272,31 ft / 83,00 m   9,84 ft / 3,00 m
   Ends:   1,18" / 30 mm   131,23 ft / 40,00 m   7,87 ft / 2,40 m
     3,28 ft / 1,00 m Unarmoured ends
     Main Belt covers 103 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   3,54" / 90 mm   1,18" / 30 mm      1,57" / 40 mm
   2nd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

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

   - Conning towers: Forward 3,54" / 90 mm, Aft 1,18" / 30 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 25 680 shp / 19 157 Kw = 27,00 kts
   Range 4 500nm at 12,00 kts
   Bunker at max displacement = 351 tons

Complement:
   221 - 288

Cost:
   £1,142 million / $4,567 million

Distribution of weights at normal displacement:
   Armament: 248 tons, 7,3 %
      - Guns: 248 tons, 7,3 %
   Armour: 892 tons, 26,3 %
      - Belts: 436 tons, 12,9 %
      - Armament: 52 tons, 1,5 %
      - Armour Deck: 381 tons, 11,2 %
      - Conning Towers: 23 tons, 0,7 %
   Machinery: 799 tons, 23,6 %
   Hull, fittings & equipment: 950 tons, 28,1 %
   Fuel, ammunition & stores: 388 tons, 11,4 %
   Miscellaneous weights: 110 tons, 3,2 %
      - Hull below water: 15 tons
      - Hull above water: 15 tons
      - On freeboard deck: 30 tons
      - Above deck: 50 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3 142 lbs / 1 425 Kg = 29,3 x 6,0 " / 152 mm shells or 0,9 torpedoes
   Stability (Unstable if below 1.00): 1,11
   Metacentric height 1,9 ft / 0,6 m
   Roll period: 14,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,59
   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): 0,484 / 0,490
   Length to Beam Ratio: 8,86 : 1
   'Natural speed' for length: 20,17 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   Bow angle (Positive = bow angles forward): 7,00 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,  12,47 ft / 3,80 m
      - Quarter deck:   16,00 %,  12,47 ft / 3,80 m,  12,80 ft / 3,90 m
      - Average freeboard:      14,53 ft / 4,43 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 102,0 %
      - Above water (accommodation/working, high = better): 148,3 %
   Waterplane Area: 12 272 Square feet or 1 140 Square metres
   Displacement factor (Displacement / loading): 100 %
   Structure weight / hull surface area: 58 lbs/sq ft or 285 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,71
      - Longitudinal: 1,15
      - Overall: 0,75
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

25t for Long Range Marconi
25t for top mast rangefinder - FC1924
15t for climatisation
15t for additionnal pumps
16t for 4TTx21" HW
14t reserved for new materials, armament

---------------------

With 3T2x191

M class, Byzantine Empire AGB3000 laid down 1928

Displacement:
   3 000 t light; 3 204 t standard; 3 389 t normal; 3 538 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (409,25 ft / 406,82 ft) x 45,93 ft x (13,12 / 13,54 ft)
   (124,74 m / 124,00 m) x 14,00 m  x (4,00 / 4,13 m)

Armament:
      6 - 7,52" / 191 mm 45,0 cal guns - 200,00lbs / 90,72kg shells, 160 per gun
     Breech loading guns in deck and hoist mounts, 1928 Model
     3 x 2-gun mounts on centreline ends, majority aft
      4 - 4,72" / 120 mm 45,0 cal guns - 50,00lbs / 22,68kg shells, 220 per gun
     Quick firing guns in deck mounts, 1928 Model
     2 x 2-gun mounts on sides, forward deck centre
      4 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 000 per gun
     Anti-air guns in deck mounts, 1928 Model
     4 x Single mounts on sides, forward evenly spread
      4 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, 1928 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 1 408 lbs / 639 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2,36" / 60 mm   0,79" / 20 mm      0,98" / 25 mm
   2nd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

   - Box over machinery & magazines:
   2,76" / 70 mm

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 25 700 shp / 19 172 Kw = 27,00 kts
   Range 4 250nm at 12,00 kts
   Bunker at max displacement = 333 tons

Complement:
   221 - 288

Cost:
   £1,319 million / $5,278 million

Distribution of weights at normal displacement:
   Armament: 376 tons, 11,1 %
      - Guns: 376 tons, 11,1 %
   Armour: 744 tons, 22,0 %
      - Armament: 39 tons, 1,2 %
      - Armour Deck: 686 tons, 20,2 %
      - Conning Towers: 19 tons, 0,6 %
   Machinery: 779 tons, 23,0 %
   Hull, fittings & equipment: 1 017 tons, 30,0 %
   Fuel, ammunition & stores: 389 tons, 11,5 %
   Miscellaneous weights: 84 tons, 2,5 %
      - Hull below water: 1 tons
      - Hull above water: 15 tons
      - On freeboard deck: 30 tons
      - Above deck: 38 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     2 577 lbs / 1 169 Kg = 12,1 x 7,5 " / 191 mm shells or 0,8 torpedoes
   Stability (Unstable if below 1.00): 1,04
   Metacentric height 1,7 ft / 0,5 m
   Roll period: 14,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,89
   Seaboat quality  (Average = 1.00): 1,03

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,484 / 0,489
   Length to Beam Ratio: 8,86 : 1
   'Natural speed' for length: 20,17 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 7,00 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 %,  19,77 ft / 6,03 m,  16,49 ft / 5,03 m
      - Forward deck:   33,00 %,  16,49 ft / 5,03 m,  13,21 ft / 4,03 m
      - Aft deck:   33,00 %,  13,21 ft / 4,03 m,  12,22 ft / 3,73 m
      - Quarter deck:   16,00 %,  12,22 ft / 3,73 m,  12,88 ft / 3,93 m
      - Average freeboard:      14,31 ft / 4,36 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 111,7 %
      - Above water (accommodation/working, high = better): 145,7 %
   Waterplane Area: 12 272 Square feet or 1 140 Square metres
   Displacement factor (Displacement / loading): 92 %
   Structure weight / hull surface area: 66 lbs/sq ft or 322 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,72
      - Longitudinal: 1,26
      - Overall: 0,77
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

38t for top mast rangefinder - FC1924
15t for climatisation
16t for 4TTx21" HW
14t reserved for new materials, armaments

[Jefgte]

Rework 3000t with 3T2x152

I like this one

M class, Byzantine Empire AGB3000 laid down 1928

Displacement:
   3 000 t light; 3 193 t standard; 3 388 t normal; 3 544 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (409,64 ft / 406,82 ft) x 45,93 ft x (13,11 / 13,56 ft)
   (124,86 m / 124,00 m) x 14,00 m  x (4,00 / 4,13 m)

Armament:
      6 - 5,98" / 152 mm 45,0 cal guns - 100,00lbs / 45,36kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1928 Model
     3 x 2-gun mounts on centreline ends, majority aft
      8 - 4,72" / 120 mm 45,0 cal guns - 50,00lbs / 22,68kg shells, 220 per gun
     Quick firing guns in deck mounts, 1928 Model
     4 x 2-gun mounts on sides, forward evenly spread
      8 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 000 per gun
      Anti-air guns in deck mounts, 1928 Model
     4 x 2-gun mounts on sides, forward evenly spread
      4 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, 1928 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 1 016 lbs / 461 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,54" / 90 mm   272,31 ft / 83,00 m   9,84 ft / 3,00 m
   Ends:   1,18" / 30 mm   131,23 ft / 40,00 m   7,87 ft / 2,40 m
     3,28 ft / 1,00 m Unarmoured ends
     Main Belt covers 103 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   3,54" / 90 mm   1,18" / 30 mm      1,57" / 40 mm
   2nd:   0,79" / 20 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 1,57" / 40 mm
   Forecastle: 1,18" / 30 mm  Quarter deck: 1,18" / 30 mm

   - Conning towers: Forward 3,54" / 90 mm, Aft 1,18" / 30 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 25 680 shp / 19 157 Kw = 27,00 kts
   Range 4 500nm at 12,00 kts
   Bunker at max displacement = 351 tons

Complement:
   221 - 288

Cost:
   £1,143 million / $4,571 million

Distribution of weights at normal displacement:
   Armament: 250 tons, 7,4 %
      - Guns: 250 tons, 7,4 %
   Armour: 861 tons, 25,4 %
      - Belts: 437 tons, 12,9 %
      - Armament: 56 tons, 1,7 %
      - Armour Deck: 344 tons, 10,2 %
      - Conning Towers: 23 tons, 0,7 %
   Machinery: 798 tons, 23,6 %
   Hull, fittings & equipment: 935 tons, 27,6 %
   Fuel, ammunition & stores: 388 tons, 11,4 %
   Miscellaneous weights: 156 tons, 4,6 %
      - Hull below water: 15 tons
      - Hull above water: 15 tons
      - On freeboard deck: 76 tons
      - Above deck: 50 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3 120 lbs / 1 415 Kg = 29,1 x 6,0 " / 152 mm shells or 0,9 torpedoes
   Stability (Unstable if below 1.00): 1,10
   Metacentric height 1,9 ft / 0,6 m
   Roll period: 14,1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,56
   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): 0,484 / 0,490
   Length to Beam Ratio: 8,86 : 1
   'Natural speed' for length: 20,17 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   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 %,  20,01 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,  12,47 ft / 3,80 m
      - Quarter deck:   16,00 %,  12,47 ft / 3,80 m,  12,80 ft / 3,90 m
      - Average freeboard:      14,53 ft / 4,43 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 102,0 %
      - Above water (accommodation/working, high = better): 148,3 %
   Waterplane Area: 12 272 Square feet or 1 140 Square metres
   Displacement factor (Displacement / loading): 100 %
   Structure weight / hull surface area: 58 lbs/sq ft or 282 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,71
      - Longitudinal: 1,14
      - 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
25t for top mast rangefinder - FC1924
OD
15t for enhanced hydrophonne
5t for 50 DC
24t for 2x3TTx21" HW
32t reserved for new materials, armaments or 32 minen
AW
15t for climatisation
BW
15t for additionnal pumps

[Kaiser Kirk]

Rework 3000t with 3T2x152

I like this one.


M class, Byzantine Empire AGB3000 laid down 1928

Looks good, I will have to take a closer look to see where it differs from my Sibari gunboats,
I see you managed more speed, about the same armor.  I'm guessing the armament weight is about the same,
which may mean you have a more efficient hull shape.

[Jefgte]

Same design but I replace 4T2x120 by 1T2x152

M class, Byzantine Empire AGB3000 laid down 1928

Displacement:
   3 000 t light; 3 166 t standard; 3 360 t normal; 3 515 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (409,28 ft / 406,82 ft) x 45,93 ft x (13,00 / 13,44 ft)
   (124,75 m / 124,00 m) x 14,00 m  x (3,96 / 4,10 m)

Armament:
      8 - 5,98" / 152 mm 45,0 cal guns - 100,00lbs / 45,36kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1928 Model
     4 x 2-gun mounts on centreline, evenly spread
      8 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 000 per gun
     Quick firing guns in deck mounts, 1928 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, 4 000 per gun
     Machine guns in deck mounts, 1928 Model
     8 x 2-gun mounts on side ends, evenly spread
      4 raised mounts - superfiring
      Weight of broadside 817 lbs / 370 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,54" / 90 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:   4,33" / 110 mm   1,18" / 30 mm      1,57" / 40 mm
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 1,57" / 40 mm
   Forecastle: 1,18" / 30 mm  Quarter deck: 1,18" / 30 mm

   - Conning towers: Forward 3,54" / 90 mm, Aft 1,18" / 30 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 25 570 shp / 19 075 Kw = 27,00 kts
   Range 4 500nm at 12,00 kts
   Bunker at max displacement = 349 tons

Complement:
   219 - 286

Cost:
   £1,141 million / $4,562 million

Distribution of weights at normal displacement:
   Armament: 233 tons, 6,9 %
      - Guns: 233 tons, 6,9 %
   Armour: 869 tons, 25,9 %
      - Belts: 434 tons, 12,9 %
      - Armament: 67 tons, 2,0 %
      - Armour Deck: 344 tons, 10,2 %
      - Conning Towers: 23 tons, 0,7 %
   Machinery: 793 tons, 23,6 %
   Hull, fittings & equipment: 953 tons, 28,4 %
   Fuel, ammunition & stores: 360 tons, 10,7 %
   Miscellaneous weights: 152 tons, 4,5 %
      - Hull below water: 15 tons
      - Hull above water: 15 tons
      - On freeboard deck: 74 tons
      - Above deck: 48 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3 127 lbs / 1 418 Kg = 29,2 x 6,0 " / 152 mm shells or 0,9 torpedoes
   Stability (Unstable if below 1.00): 1,07
   Metacentric height 1,8 ft / 0,5 m
   Roll period: 14,5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,54
   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): 0,484 / 0,490
   Length to Beam Ratio: 8,86 : 1
   'Natural speed' for length: 20,17 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   Bow angle (Positive = bow angles forward): 7,00 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,  16,90 ft / 5,15 m
      - Forward deck:   33,00 %,  16,90 ft / 5,15 m,  13,78 ft / 4,20 m
      - Aft deck:   33,00 %,  13,78 ft / 4,20 m,  12,47 ft / 3,80 m
      - Quarter deck:   16,00 %,  12,47 ft / 3,80 m,  12,80 ft / 3,90 m
      - Average freeboard:      14,68 ft / 4,47 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 101,5 %
      - Above water (accommodation/working, high = better): 151,9 %
   Waterplane Area: 12 272 Square feet or 1 140 Square metres
   Displacement factor (Displacement / loading): 99 %
   Structure weight / hull surface area: 58 lbs/sq ft or 281 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,71
      - Longitudinal: 1,12
      - 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
23t for top mast rangefinder - FC1924
OD
15t for enhanced hydrophone
5t for DC
24t for 2x3TTx21" HW
30t reserved for new materials, armament or minen
AW
15t for climatisation
BW
15t for additionnal pumps

[TacCovert4]

I've played with both styles, using 180s and 130s.  Honestly, given that 152s are DD killers and have enough RoF, I'd rather have more 152s and skip the 120s. 

This dynamic would change if you had DP secondaries, as then you have to balance AA fires and surface fires.

[Kaiser Kirk]

To me, the 152mm should train and fire fast enough the 120mm would be redundant. Even single 191s should be reasonable in that role without the 120s.

For my vessel, I have roughly the same weapons, but 6x 165 + 6x163 HOW, to focus on its gunboat role. Given the speed difference, I should have had tonnage to do more :)
I believe one of my Scout Frigate proposals looked more like your configuration, but at 28knots, not fast enough for the role I wanted.

[Jefgte]

Gunboat intended for use in the colonies. The armament has been favored over the speed and the protection which nevertheless remains correct.
These Gunboat will operate with Colonial 22-24kts battleships and 25kts TGBs.

M class, Byzantine Empire Armored Gun Boat - AGB3000 laid down 1928

Displacement:
   3 000 t light; 3 213 t standard; 3 410 t normal; 3 569 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (409,24 ft / 406,82 ft) x 50,85 ft x (11,90 / 12,30 ft)
   (124,74 m / 124,00 m) x 15,50 m  x (3,63 / 3,75 m)

Armament:
      6 - 7,52" / 191 mm 45,0 cal guns - 200,00lbs / 90,72kg shells, 143 per gun
     Breech loading guns in deck and hoist mounts, 1928 Model
     3 x 2-gun mounts on centreline ends, majority aft
      8 - 4,72" / 120 mm 45,0 cal guns - 50,00lbs / 22,68kg shells, 184 per gun
     Quick firing guns in deck mounts, 1928 Model
     4 x 2-gun mounts on sides, forward evenly spread
      8 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 900 per gun
     Anti-air guns in deck mounts, 1928 Model
     4 x 2-gun mounts on sides, forward evenly spread
      4 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, 1928 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 1 616 lbs / 733 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,15" / 80 mm   275,59 ft / 84,00 m   9,84 ft / 3,00 m
   Ends:   0,98" / 25 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:   4,33" / 110 mm   0,79" / 20 mm      1,38" / 35 mm
   2nd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 1,18" / 30 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, 2 shafts, 21 860 shp / 16 308 Kw = 25,78 kts
   Range 4 500nm at 12,00 kts
   Bunker at max displacement = 356 tons

Complement:
   223 - 290

Cost:
   £1,302 million / $5,209 million

Distribution of weights at normal displacement:
   Armament: 415 tons, 12,2 %
      - Guns: 415 tons, 12,2 %
   Armour: 744 tons, 21,8 %
      - Belts: 391 tons, 11,5 %
      - Armament: 49 tons, 1,4 %
      - Armour Deck: 282 tons, 8,3 %
      - Conning Towers: 21 tons, 0,6 %
   Machinery: 672 tons, 19,7 %
   Hull, fittings & equipment: 1 073 tons, 31,5 %
   Fuel, ammunition & stores: 411 tons, 12,0 %
   Miscellaneous weights: 97 tons, 2,8 %
      - Hull below water: 15 tons
      - Hull above water: 15 tons
      - On freeboard deck: 26 tons
      - Above deck: 41 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3 234 lbs / 1 467 Kg = 15,2 x 7,5 " / 191 mm shells or 1,0 torpedoes
   Stability (Unstable if below 1.00): 1,12
   Metacentric height 2,2 ft / 0,7 m
   Roll period: 14,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,68
   Seaboat quality  (Average = 1.00): 1,03

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,485 / 0,491
   Length to Beam Ratio: 8,00 : 1
   'Natural speed' for length: 20,17 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 7,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   17,50 %,  19,69 ft / 6,00 m,  16,57 ft / 5,05 m
      - Forward deck:   33,50 %,  16,57 ft / 5,05 m,  13,29 ft / 4,05 m
      - Aft deck:   33,50 %,  13,29 ft / 4,05 m,  13,12 ft / 4,00 m
      - Quarter deck:   15,50 %,  13,12 ft / 4,00 m,  13,12 ft / 4,00 m
      - Average freeboard:      14,58 ft / 4,44 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 104,2 %
      - Above water (accommodation/working, high = better): 163,4 %
   Waterplane Area: 13 599 Square feet or 1 263 Square metres
   Displacement factor (Displacement / loading): 96 %
   Structure weight / hull surface area: 68 lbs/sq ft or 330 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,71
      - Longitudinal: 1,22
      - Overall: 0,75
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
41t for top mast rangefinder - FC1924
OD
16t for 2x2TTx21" HW
10t reserved for new materials, armaments.
AW
15t for climatisation
BW
15t for additionnal pumps

[Jefgte]

C12 class is the 30kts version of AGB3000 with cruiser equipment.

Merka - Malha, Byzantine Empire C12 laid down 1928

Displacement:
   6 000 t light; 6 319 t standard; 7 046 t normal; 7 627 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (491,75 ft / 488,85 ft) x 55,58 ft x (18,15 / 19,28 ft)
   (149,88 m / 149,00 m) x 16,94 m  x (5,53 / 5,88 m)

Armament:
      6 - 7,52" / 191 mm 45,0 cal guns - 200,00lbs / 90,72kg shells, 170 per gun
     Breech loading guns in turret on barbette mounts, 1928 Model
     3 x 2-gun mounts on centreline ends, majority aft
      8 - 4,72" / 120 mm 45,0 cal guns - 50,00lbs / 22,68kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1928 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, 1 000 per gun
     Anti-air guns in deck mounts, 1928 Model
     8 x 2-gun mounts on sides, evenly spread
      8 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, 1928 Model
     8 x 2-gun mounts on sides, evenly spread
      8 raised mounts
      Weight of broadside 1 633 lbs / 741 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:   1,41" / 36 mm   150,89 ft / 45,99 m   7,87 ft / 2,40 m
     Main Belt covers 106 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5,51" / 140 mm   1,18" / 30 mm      1,97" / 50 mm
   2nd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 1,57" / 40 mm
   Forecastle: 0,98" / 25 mm  Quarter deck: 0,98" / 25 mm

   - Conning towers: Forward 3,54" / 90 mm, Aft 1,18" / 30 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 57 900 shp / 43 193 Kw = 30,01 kts
   Range 8 000nm at 14,00 kts
   Bunker at max displacement = 1 308 tons

Complement:
   383 - 499

Cost:
   £2,390 million / $9,559 million

Distribution of weights at normal displacement:
   Armament: 485 tons, 6,9 %
      - Guns: 485 tons, 6,9 %
   Armour: 1 275 tons, 18,1 %
      - Belts: 599 tons, 8,5 %
      - Armament: 141 tons, 2,0 %
      - Armour Deck: 497 tons, 7,1 %
      - Conning Towers: 37 tons, 0,5 %
   Machinery: 1 803 tons, 25,6 %
   Hull, fittings & equipment: 2 219 tons, 31,5 %
   Fuel, ammunition & stores: 1 045 tons, 14,8 %
   Miscellaneous weights: 219 tons, 3,1 %
      - Hull below water: 30 tons
      - Hull above water: 30 tons
      - On freeboard deck: 85 tons
      - Above deck: 74 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     6 609 lbs / 2 998 Kg = 31,1 x 7,5 " / 191 mm shells or 1,2 torpedoes
   Stability (Unstable if below 1.00): 1,05
   Metacentric height 2,3 ft / 0,7 m
   Roll period: 15,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,60
   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): 0,500 / 0,510
   Length to Beam Ratio: 8,80 : 1
   'Natural speed' for length: 22,11 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 7,00 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 %,  23,62 ft / 7,20 m,  20,34 ft / 6,20 m
      - Forward deck:   33,50 %,  20,34 ft / 6,20 m,  17,06 ft / 5,20 m
      - Aft deck:   33,52 %,  17,06 ft / 5,20 m,  16,40 ft / 5,00 m
      - Quarter deck:   15,48 %,  16,40 ft / 5,00 m,  16,40 ft / 5,00 m
      - Average freeboard:      18,20 ft / 5,55 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 106,2 %
      - Above water (accommodation/working, high = better): 159,5 %
   Waterplane Area: 18 102 Square feet or 1 682 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 87 lbs/sq ft or 425 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,85
      - Longitudinal: 1,49
      - 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

AD
49t for top fire control
25t for Marconi
OD
24t for 2x3TTx533 HW
25t for Seaplane + cata
45t reserved
AW
30t for climatisation
BW
30t for additionnal pumps

[The Rock Doctor]

Looks pretty good except the hull strength needs to be 1.00 to go with the turrets...