Byzantine Empire 1918-1922

Jefgte · August 21, 2021, 04:40:51 PM

D10 project is D9 (1140t) update to 32kts & better range.

D10, Byzantine Empire Fleet Destroyer laid down 1920

Displacement:
   1 300 t light; 1 348 t standard; 1 502 t normal; 1 626 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (360,89 ft / 360,89 ft) x 33,46 ft x (11,16 / 11,75 ft)
   (110,00 m / 110,00 m) x 10,20 m x (3,40 / 3,58 m)

Armament:
4 - 4,72" / 120 mm 45,0 cal guns - 53,02lbs / 24,05kg shells, 140 per gun
     Quick firing guns in deck mounts, 1920 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
1 - 3,00" / 76,2 mm 45,0 cal gun - 13,62lbs / 6,18kg shells, 160 per gun
     Anti-air gun in deck mount, 1920 Model
     1 x Single mount on centreline, forward deck aft
      1 raised mount
2 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 2 000 per gun
     Machine guns in deck mounts, 1920 Model
     2 x Single mounts on sides, forward deck forward
Weight of broadside 226 lbs / 102 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, 30 400 shp / 22 679 Kw = 32,03 kts
   Range 5 500nm at 12,00 kts
   Bunker at max displacement = 279 tons

Complement:
   119 - 156

Cost:
   £0,392 million / $1,568 million

Distribution of weights at normal displacement:
   Armament: 40 tons, 2,7 %
     - Guns: 40 tons, 2,7 %
   Armour: 6 tons, 0,4 %
     - Armament: 6 tons, 0,4 %
   Machinery: 782 tons, 52,1 %
   Hull, fittings & equipment: 377 tons, 25,1 %
   Fuel, ammunition & stores: 203 tons, 13,5 %
   Miscellaneous weights: 94 tons, 6,3 %
     - On freeboard deck: 65 tons
     - Above deck: 29 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     400 lbs / 182 Kg = 7,6 x 4,7 " / 120 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,20
   Metacentric height 1,4 ft / 0,4 m
   Roll period: 12,1 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,26
   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): 0,390 / 0,401
   Length to Beam Ratio: 10,78 : 1
   'Natural speed' for length: 19,00 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 68
   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 %, 17,72 ft / 5,40 m, 14,76 ft / 4,50 m
     - Forward deck:   32,50 %, 14,76 ft / 4,50 m, 11,81 ft / 3,60 m
     - Aft deck:   32,50 %, 11,81 ft / 3,60 m, 11,81 ft / 3,60 m
     - Quarter deck:   17,50 %, 11,81 ft / 3,60 m, 12,47 ft / 3,80 m
     - Average freeboard:      13,07 ft / 3,98 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 175,4 %
      - Above water (accommodation/working, high = better): 148,3 %
   Waterplane Area: 7 384 Square feet or 686 Square metres
   Displacement factor (Displacement / loading): 64 %
   Structure weight / hull surface area: 30 lbs/sq ft or 147 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,20
      - Overall: 0,54
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

27t for 9TT x 533 - 3x3TT
4t for 1913 top mast rangefinder
25t for LR marconi
6t for additionnal engines ventillation
30t reserved for Troops, Materials, DC, Minen...

Trial speed: 33kts
Bonus: 0.8

Jefgte · August 22, 2021, 07:18:07 AM

D10, Byzantine Empire Fleet Destroyer laid down 1920

Displacement:
   1 350 t light; 1 410 t standard; 1 554 t normal; 1 670 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (360,89 ft / 360,89 ft) x 33,46 ft x (11,55 / 12,10 ft)
   (110,00 m / 110,00 m) x 10,20 m x (3,52 / 3,69 m)

Armament:
4 - 5,50" / 140 mm 50,0 cal guns - 88,07lbs / 39,95kg shells, 140 per gun
     Quick firing guns in deck mounts, 1920 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
1 - 3,00" / 76,2 mm 45,0 cal gun - 13,62lbs / 6,18kg shells, 160 per gun
     Anti-air gun in deck mount, 1920 Model
     1 x Single mount on centreline, forward deck aft
      1 raised mount
2 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 2 000 per gun
     Machine guns in deck mounts, 1920 Model
     2 x Single mounts on sides, forward deck forward
Weight of broadside 366 lbs / 166 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, 31 000 shp / 23 126 Kw = 32,01 kts
   Range 5 000nm at 12,00 kts
   Bunker at max displacement = 260 tons

Complement:
   123 - 160

Cost:
   £0,418 million / $1,674 million

Distribution of weights at normal displacement:
   Armament: 70 tons, 4,5 %
     - Guns: 70 tons, 4,5 %
   Armour: 7 tons, 0,4 %
     - Armament: 7 tons, 0,4 %
   Machinery: 789 tons, 50,8 %
   Hull, fittings & equipment: 380 tons, 24,4 %
   Fuel, ammunition & stores: 204 tons, 13,1 %
   Miscellaneous weights: 104 tons, 6,7 %
     - On freeboard deck: 72 tons
     - Above deck: 32 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     393 lbs / 178 Kg = 4,7 x 5,5 " / 140 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,14
   Metacentric height 1,2 ft / 0,4 m
   Roll period: 12,6 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,44
   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): 0,390 / 0,400
   Length to Beam Ratio: 10,78 : 1
   'Natural speed' for length: 19,00 kts
   Power going to wave formation at top speed: 62 %
   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:   17,50 %, 17,72 ft / 5,40 m, 14,76 ft / 4,50 m
     - Forward deck:   32,50 %, 14,76 ft / 4,50 m, 11,81 ft / 3,60 m
     - Aft deck:   32,50 %, 11,81 ft / 3,60 m, 11,81 ft / 3,60 m
     - Quarter deck:   17,50 %, 11,81 ft / 3,60 m, 12,47 ft / 3,80 m
     - Average freeboard:      13,07 ft / 3,98 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 176,2 %
      - Above water (accommodation/working, high = better): 143,5 %
   Waterplane Area: 7 384 Square feet or 686 Square metres
   Displacement factor (Displacement / loading): 63 %
   Structure weight / hull surface area: 32 lbs/sq ft or 154 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,24
      - Overall: 0,54
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

27t for 9TT x 533 - 3x3TT
7t for 1913 top mast rangefinder
25t for LR marconi
6t for additionnal engines ventillation
39t reserved...

Trial speed: 32.5kts
Bonus: 0.49

Jefgte · August 22, 2021, 07:50:54 AM

The maximum 1920-1500t-32kts with 3T2x120 & 12TTx533

D10, Byzantine Empire Fleet Destroyer laid down 1920

Displacement:
   1 500 t light; 1 561 t standard; 1 714 t normal; 1 837 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (367,45 ft / 367,45 ft) x 34,51 ft x (12,13 / 12,68 ft)
   (112,00 m / 112,00 m) x 10,52 m x (3,70 / 3,87 m)

Armament:
6 - 4,72" / 120 mm 45,0 cal guns - 53,03lbs / 24,05kg shells, 140 per gun
     Quick firing guns in deck and hoist mounts, 1920 Model
     3 x Twin mounts on centreline ends, majority aft
      1 raised mount aft - superfiring
1 - 3,00" / 76,2 mm 45,0 cal gun - 13,62lbs / 6,18kg shells, 160 per gun
     Anti-air gun in deck mount, 1920 Model
     1 x Single mount on centreline, forward deck aft
      1 raised mount
2 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 2 000 per gun
     Machine guns in deck mounts, 1920 Model
     2 x Single mounts on sides, forward deck forward
Weight of broadside 332 lbs / 151 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, 33 150 shp / 24 730 Kw = 32,11 kts
   Range 5 000nm at 12,00 kts
   Bunker at max displacement = 276 tons

Complement:
   133 - 173

Cost:
   £0,481 million / $1,925 million

Distribution of weights at normal displacement:
   Armament: 72 tons, 4,2 %
     - Guns: 72 tons, 4,2 %
   Armour: 5 tons, 0,3 %
     - Armament: 5 tons, 0,3 %
   Machinery: 857 tons, 50,0 %
   Hull, fittings & equipment: 471 tons, 27,5 %
   Fuel, ammunition & stores: 214 tons, 12,5 %
   Miscellaneous weights: 95 tons, 5,5 %
     - On freeboard deck: 63 tons
     - Above deck: 32 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     409 lbs / 186 Kg = 7,8 x 4,7 " / 120 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,07
   Metacentric height 1,2 ft / 0,4 m
   Roll period: 13,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,68
   Seaboat quality (Average = 1.00): 1,00

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,390 / 0,400
   Length to Beam Ratio: 10,65 : 1
   'Natural speed' for length: 19,17 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 0,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   17,50 %, 18,67 ft / 5,69 m, 15,39 ft / 4,69 m
     - Forward deck:   32,50 %, 15,39 ft / 4,69 m, 12,11 ft / 3,69 m
     - Aft deck:   32,50 %, 12,11 ft / 3,69 m, 12,11 ft / 3,69 m
     - Quarter deck:   17,50 %, 12,11 ft / 3,69 m, 12,76 ft / 3,89 m
     - Average freeboard:      13,50 ft / 4,12 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 178,0 %
      - Above water (accommodation/working, high = better): 143,5 %
   Waterplane Area: 7 754 Square feet or 720 Square metres
   Displacement factor (Displacement / loading): 63 %
   Structure weight / hull surface area: 36 lbs/sq ft or 173 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,32
      - Overall: 0,55
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

7t for 1913 top mast rangefinder
25t for LR marconi
36t for 12TT x 533 - 4 x 3TT
7t for additionnal engines ventillation
20t reserved...

Trial speed: 32.5kts
Bonus: 0.39

TacCovert4 · August 22, 2021, 08:13:17 AM

Do you not have the Heavyweight torpedoes? Or opting not to install them?

Jefgte · August 22, 2021, 04:04:49 PM

QuoteDo you not have the Heavyweight torpedoes? Or opting not to install them?

Difficult to install enough 4t TT on 1300-1500t with a salvoe provided.
Or it is necessary to reduce the armament or misc weight in reserve ...

TacCovert4 · August 22, 2021, 06:39:50 PM

Makes sense. The 4t torps are where the choices start to come in. Really a no-brainer to go to 21in torpedoes from 18in, except if you have a specific reason. But the regular 21in vs the Heavyweight (longer ranged) 21in torps is where it comes into question based on doctrine and expected use.

Jefgte · August 25, 2021, 04:21:02 PM

Foreign Navies build or have plans for 1500t destroyers.
Byzantium is also studying 1500t Destroyer.
The last project is an Atlantic Destroyer with 7200nm range @ 12kts (oil 400t) equipped with 2 double 120mm turrets and 10TT of 533 (heavy Torpedo) Hydrophone and DC. Speed 32kts.

D10, Byzantine Empire Atlantique Destroyer laid down 1920

Displacement:
   1 500 t light; 1 554 t standard; 1 777 t normal; 1 955 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (367,45 ft / 367,45 ft) x 34,51 ft x (12,57 / 13,38 ft)
   (112,00 m / 112,00 m) x 10,52 m x (3,83 / 4,08 m)

Armament:
4 - 4,72" / 120 mm 45,0 cal guns - 53,02lbs / 24,05kg shells, 150 per gun
     Quick firing guns in deck and hoist mounts, 1920 Model
     2 x Twin mounts on centreline ends, evenly spread
1 - 3,00" / 76,2 mm 45,0 cal gun - 13,62lbs / 6,18kg shells, 160 per gun
     Anti-air gun in deck mount, 1920 Model
     1 x Single mount on centreline, forward deck aft
      1 raised mount
4 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 2 500 per gun
     Machine guns in deck mounts, 1920 Model
     4 x Single mounts on side ends, evenly spread
Weight of broadside 226 lbs / 102 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, 33 440 shp / 24 946 Kw = 32,00 kts
   Range 7 200nm at 12,00 kts
   Bunker at max displacement = 400 tons

Complement:
   136 - 177

Cost:
   £0,473 million / $1,892 million

Distribution of weights at normal displacement:
   Armament: 49 tons, 2,8 %
     - Guns: 49 tons, 2,8 %
   Armour: 7 tons, 0,4 %
     - Armament: 7 tons, 0,4 %
   Machinery: 904 tons, 50,9 %
   Hull, fittings & equipment: 439 tons, 24,7 %
   Fuel, ammunition & stores: 277 tons, 15,6 %
   Miscellaneous weights: 101 tons, 5,7 %
     - On freeboard deck: 71 tons
     - Above deck: 30 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     434 lbs / 197 Kg = 8,3 x 4,7 " / 120 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,17
   Metacentric height 1,4 ft / 0,4 m
   Roll period: 12,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,34
   Seaboat quality (Average = 1.00): 1,00

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,390 / 0,403
   Length to Beam Ratio: 10,65 : 1
   'Natural speed' for length: 19,17 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 0,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   17,50 %, 18,31 ft / 5,58 m, 15,03 ft / 4,58 m
     - Forward deck:   32,50 %, 15,03 ft / 4,58 m, 11,75 ft / 3,58 m
     - Aft deck:   32,50 %, 11,75 ft / 3,58 m, 11,75 ft / 3,58 m
     - Quarter deck:   17,50 %, 11,75 ft / 3,58 m, 12,40 ft / 3,78 m
     - Average freeboard:      13,14 ft / 4,01 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 175,3 %
      - Above water (accommodation/working, high = better): 136,5 %
   Waterplane Area: 7 754 Square feet or 720 Square metres
   Displacement factor (Displacement / loading): 67 %
   Structure weight / hull surface area: 33 lbs/sq ft or 160 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,18
      - Overall: 0,54
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

5t for 1913 top mast rangefinder
25t for LR marconi
7t for additionnal engines ventillation
5t Hydrophone
5t for 50x90kg DC
40t for 2x3TTx533 + 2x2TTx533 - 10x4t
14t reserved...

Trial speed: 32.5kts
Bonus: 0.5

TacCovert4 · August 25, 2021, 04:46:09 PM

Interesting, I also looked at a dd with 130mm twins.

The Rock Doctor · August 25, 2021, 05:46:17 PM

Mixed triple and twin torpedo carriages is unconventional.

Jefgte · August 25, 2021, 07:18:27 PM

QuoteMixed triple and twin torpedo carriages is unconventional.

I have enough oil and misc weight to adjust 12TT => 48 t

;)

Jefgte · August 26, 2021, 04:17:01 PM

D10 class is an update of D9 class with:
7200nm range @ 12kts (oil 400t) D9 was 6000nm @10kts (oil 219t)
2 double 120mm turrets D9 was 4T1 (2superfiring)
9TT of 533 => 4t torpedoes D9 was 3t torpedoes.
Speed 32kts D9 was 30.68kts.

D10, Byzantine Empire Atlantique Destroyer laid down 1920

Displacement:
   1 500 t light; 1 554 t standard; 1 777 t normal; 1 955 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (367,45 ft / 367,45 ft) x 34,51 ft x (12,57 / 13,38 ft)
   (112,00 m / 112,00 m) x 10,52 m x (3,83 / 4,08 m)

Armament:
4 - 4,72" / 120 mm 45,0 cal guns - 53,02lbs / 24,05kg shells, 150 per gun
     Quick firing guns in deck and hoist mounts, 1920 Model
     2 x Twin mounts on centreline ends, evenly spread
1 - 3,00" / 76,2 mm 45,0 cal gun - 13,62lbs / 6,18kg shells, 160 per gun
     Anti-air gun in deck mount, 1920 Model
     1 x Single mount on centreline, forward deck aft
      1 raised mount
4 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 2 500 per gun
     Machine guns in deck mounts, 1920 Model
     4 x Single mounts on side ends, evenly spread
Weight of broadside 226 lbs / 102 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, 33 440 shp / 24 946 Kw = 32,00 kts
   Range 7 200nm at 12,00 kts
   Bunker at max displacement = 400 tons

Complement:
   136 - 177

Cost:
   £0,473 million / $1,892 million

Distribution of weights at normal displacement:
   Armament: 49 tons, 2,8 %
     - Guns: 49 tons, 2,8 %
   Armour: 7 tons, 0,4 %
     - Armament: 7 tons, 0,4 %
   Machinery: 904 tons, 50,9 %
   Hull, fittings & equipment: 439 tons, 24,7 %
   Fuel, ammunition & stores: 277 tons, 15,6 %
   Miscellaneous weights: 101 tons, 5,7 %
     - On freeboard deck: 71 tons
     - Above deck: 30 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     434 lbs / 197 Kg = 8,3 x 4,7 " / 120 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,17
   Metacentric height 1,4 ft / 0,4 m
   Roll period: 12,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,34
   Seaboat quality (Average = 1.00): 1,00

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,390 / 0,403
   Length to Beam Ratio: 10,65 : 1
   'Natural speed' for length: 19,17 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 0,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   17,50 %, 18,31 ft / 5,58 m, 15,03 ft / 4,58 m
     - Forward deck:   32,50 %, 15,03 ft / 4,58 m, 11,75 ft / 3,58 m
     - Aft deck:   32,50 %, 11,75 ft / 3,58 m, 11,75 ft / 3,58 m
     - Quarter deck:   17,50 %, 11,75 ft / 3,58 m, 12,40 ft / 3,78 m
     - Average freeboard:      13,14 ft / 4,01 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 175,3 %
      - Above water (accommodation/working, high = better): 136,5 %
   Waterplane Area: 7 754 Square feet or 720 Square metres
   Displacement factor (Displacement / loading): 67 %
   Structure weight / hull surface area: 33 lbs/sq ft or 160 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,18
      - Overall: 0,54
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

5t for 1913 top mast rangefinder
25t for LR marconi
7t for additionnal engines ventillation
5t Hydrophone
5t for 50x90kg DC
36t for 3x3TTx533 - 1x3T +2x3T - 9TT
18t reserved...

Trial speed: 32.5kts
Bonus: 0.39

Jefgte · September 01, 2021, 04:12:41 PM

C7, Byzantine Empire C7 laid down 1921

Displacement:
   5 720 t light; 5 991 t standard; 6 600 t normal; 7 088 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (515,74 ft / 511,81 ft) x 52,49 ft x (18,14 / 19,12 ft)
   (157,20 m / 156,00 m) x 16,00 m x (5,53 / 5,83 m)

Armament:
6 - 7,52" / 191 mm 45,0 cal guns - 214,42lbs / 97,26kg shells, 140 per gun
     Breech loading guns in deck and hoist mounts, 1921 Model
     6 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
6 - 4,72" / 120 mm 45,0 cal guns - 53,17lbs / 24,12kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1921 Model
     6 x Single mounts on sides, evenly spread
2 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 200 per gun
     Anti-air guns in deck mounts, 1921 Model
     2 x Single mounts on sides, forward deck centre
      2 raised mounts
4 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 4 000 per gun
     Machine guns in deck mounts, 1921 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
Weight of broadside 1 633 lbs / 741 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,54" / 90 mm   367,45 ft / 112,00 m   10,00 ft / 3,05 m
   Ends:   1,38" / 35 mm   141,08 ft / 43,00 m   9,00 ft / 2,74 m
     3,28 ft / 1,00 m Unarmoured ends
     Main Belt covers 110 % of normal length

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2,76" / 70 mm   0,79" / 20 mm      2,17" / 55 mm
   3rd:   0,78" / 20 mm     -           -
   4th:   0,39" / 10 mm     -           -
   5th:   0,39" / 10 mm     -           -

- Protected deck - single deck:
   For and Aft decks: 1,38" / 35 mm
   Forecastle: 0,98" / 25 mm Quarter deck: 0,98" / 25 mm

- Conning towers: Forward 3,54" / 90 mm, Aft 2,76" / 70 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 52 104 shp / 38 870 Kw = 29,89 kts
   Range 9 000nm at 12,00 kts
   Bunker at max displacement = 1 097 tons

Complement:
   365 - 475

Cost:
   £1,538 million / $6,151 million

Distribution of weights at normal displacement:
   Armament: 429 tons, 6,5 %
     - Guns: 429 tons, 6,5 %
   Armour: 1 140 tons, 17,3 %
     - Belts: 591 tons, 8,9 %
     - Armament: 77 tons, 1,2 %
     - Armour Deck: 425 tons, 6,4 %
     - Conning Towers: 48 tons, 0,7 %
   Machinery: 1 794 tons, 27,2 %
   Hull, fittings & equipment: 2 110 tons, 32,0 %
   Fuel, ammunition & stores: 880 tons, 13,3 %
   Miscellaneous weights: 247 tons, 3,7 %
     - Hull above water: 30 tons
     - On freeboard deck: 152 tons
     - Above deck: 65 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     5 359 lbs / 2 431 Kg = 25,2 x 7,5 " / 191 mm shells or 1,1 torpedoes
   Stability (Unstable if below 1.00): 1,01
   Metacentric height 1,9 ft / 0,6 m
   Roll period: 15,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,76
   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): 0,474 / 0,483
   Length to Beam Ratio: 9,75 : 1
   'Natural speed' for length: 22,62 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   17,50 %, 22,31 ft / 6,80 m, 18,04 ft / 5,50 m
     - Forward deck:   32,50 %, 18,04 ft / 5,50 m, 14,76 ft / 4,50 m
     - Aft deck:   32,50 %, 14,76 ft / 4,50 m, 14,76 ft / 4,50 m
     - Quarter deck:   17,50 %, 14,76 ft / 4,50 m, 14,76 ft / 4,50 m
     - Average freeboard:      16,17 ft / 4,93 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 110,4 %
      - Above water (accommodation/working, high = better): 142,2 %
   Waterplane Area: 17 490 Square feet or 1 625 Square metres
   Displacement factor (Displacement / loading): 103 %
   Structure weight / hull surface area: 84 lbs/sq ft or 412 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,88
      - Longitudinal: 1,20
      - Overall: 0,90
   Caution: Hull subject to strain in open-sea
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

25t for Long Range Marconi
43t for top mast rangefinder - FC1913
26t for climatisation
26t for additionnal pumps
32t for 8TTx21"
80t for 2x40 minen
15t reserved

TacCovert4 · September 01, 2021, 04:20:08 PM

Looks like a very effective cruiser. Frigate in Aztec parlance. The gun armor is a shade on the flimsy side, but I guess you're banking more on that not getting regularly hit by shells at battle ranges unlike the belt.

Jefgte · September 01, 2021, 06:10:01 PM

QuoteLooks like a very effective cruiser. Frigate in Aztec parlance. The gun armor is a shade on the flimsy side, but I guess you're banking more on that not getting regularly hit by shells at battle ranges unlike the belt.

I can go up to 5900t in the Building Plan.
Increase speed, armor ... (?)

TacCovert4 · September 01, 2021, 10:32:11 PM

Quote from: Jefgte on September 01, 2021, 06:10:01 PM
QuoteLooks like a very effective cruiser. Frigate in Aztec parlance. The gun armor is a shade on the flimsy side, but I guess you're banking more on that not getting regularly hit by shells at battle ranges unlike the belt.

I can go up to 5900t in the Building Plan.
Increase speed, armor ... (?)

I don't necessarily think you need to take speed up. 30kts is going to put it in that 'high' range band as it currently sits between 30 and 32 for cruisers. I'd probably look at increasing armor, probably by making the belt a little taller as it's pretty narrow. You've got a nasty punch with those guns, but they're also 'big' guns, so protecting them from hits is also probably a good idea, lest you wind up with a fire in the handling spaces. But it's definitely a 'cruiser to look out for'. The gun size makes it capable of squaring off with the Weapon class, though they have 3000t on them, and the armor and extra guns that comes with it. And they'll be a serious contender against my own next cruiser series. But overall, a dangerous ship......I'd probably use the tonnage to deepen that belt and give you more wiggle room for waterline hits.