Byzance 1932

Jefgte · April 25, 2024, 04:12:22 PM

Testing 1933 D16 with 3T2x114DP

D16, Byzantine Empire D16 laid down 1933

Displacement:
   1 750 t light; 1 869 t standard; 2 171 t normal; 2 413 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (401,65 ft / 396,98 ft) x 38,19 ft x (12,11 / 13,00 ft)
   (122,42 m / 121,00 m) x 11,64 m x (3,69 / 3,96 m)

Armament:
6 - 4,49" / 114 mm 45,0 cal guns - 58,00lbs / 26,31kg shells, 300 per gun
     Dual purpose guns in deck mounts, 1933 Model
     3 x 2-gun mounts on centreline ends, majority forward
      1 raised mount - superfiring
4 - 1,57" / 40,0 mm 39,0 cal guns - 1,86lbs / 0,84kg shells, 2 000 per gun
     Anti-air guns in deck mounts, 1933 Model
     2 x 2-gun mounts on sides, forward deck forward
      2 raised mounts
4 - 1,57" / 40,0 mm 39,0 cal guns - 1,86lbs / 0,84kg shells, 2 000 per gun
     Anti-air guns in deck mounts, 1933 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, 1933 Model
     2 x 2-gun mounts on sides, forward deck forward
      2 raised mounts
Weight of broadside 363 lbs / 165 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, 41 946 shp / 31 292 Kw = 32,95 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 544 tons

Complement:
   158 - 206

Cost:
   £1,074 million / $4,295 million

Distribution of weights at normal displacement:
   Armament: 55 tons, 2,6 %
     - Guns: 55 tons, 2,6 %
   Armour: 5 tons, 0,2 %
     - Armament: 5 tons, 0,2 %
   Machinery: 1 085 tons, 50,0 %
   Hull, fittings & equipment: 507 tons, 23,4 %
   Fuel, ammunition & stores: 421 tons, 19,4 %
   Miscellaneous weights: 98 tons, 4,5 %
     - On freeboard deck: 68 tons
     - Above deck: 30 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     616 lbs / 279 Kg = 13,6 x 4,5 " / 114 mm shells or 0,4 torpedoes
   Stability (Unstable if below 1.00): 1,32
   Metacentric height 1,9 ft / 0,6 m
   Roll period: 11,5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,23
   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): 0,414 / 0,428
   Length to Beam Ratio: 10,40 : 1
   'Natural speed' for length: 19,92 kts
   Power going to wave formation at top speed: 63 %
   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:   18,00 %, 21,98 ft / 6,70 m, 17,06 ft / 5,20 m
     - Forward deck:   33,00 %, 17,06 ft / 5,20 m, 12,80 ft / 3,90 m
     - Aft deck:   33,00 %, 12,80 ft / 3,90 m, 11,81 ft / 3,60 m
     - Quarter deck:   16,00 %, 11,81 ft / 3,60 m, 12,14 ft / 3,70 m
     - Average freeboard:      14,33 ft / 4,37 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 170,5 %
      - Above water (accommodation/working, high = better): 154,5 %
   Waterplane Area: 9 413 Square feet or 874 Square metres
   Displacement factor (Displacement / loading): 81 %
   Structure weight / hull surface area: 33 lbs/sq ft or 163 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,06
      - Overall: 0,53
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
5t for1924 top mast rangefinder
25t for LR marconi
OD
32t for 2x4TTx533HW
10t for1920 sonar
6t for 30x195 DC
20t reserved for new material, paravanes, armament, minen.
AW
climatisation

Trial speed: 33.5 kts
Bonus: 0.56

Jefgte · April 26, 2024, 03:33:34 AM

Colonial DD with 2T2x120 QF mlle 1926 from the C11 class

Cost: 1.36BP & 1.36$

D15, Byzantine Empire Colonial Destroyer laid down 1932

Displacement:
   1 400 t light; 1 474 t standard; 1 682 t normal; 1 849 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (352,16 ft / 347,77 ft) x 34,78 ft x (11,48 / 12,26 ft)
   (107,34 m / 106,00 m) x 10,60 m x (3,50 / 3,74 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, 1926 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, 1932 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, 1932 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, 1932 Model
     2 x 2-gun mounts on sides, forward deck centre
      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, 34 500 shp / 25 737 Kw = 32,04 kts
   Range 8 000nm at 12,00 kts
   Bunker at max displacement = 375 tons

Complement:
   130 - 170

Cost:
   £0,808 million / $3,231 million

Distribution of weights at normal displacement:
   Armament: 41 tons, 2,4 %
     - Guns: 41 tons, 2,4 %
   Armour: 4 tons, 0,2 %
     - Armament: 4 tons, 0,2 %
   Machinery: 840 tons, 50,0 %
   Hull, fittings & equipment: 414 tons, 24,6 %
   Fuel, ammunition & stores: 283 tons, 16,8 %
   Miscellaneous weights: 101 tons, 6,0 %
     - Hull above water: 4 tons
     - On freeboard deck: 68 tons
     - Above deck: 29 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     498 lbs / 226 Kg = 9,4 x 4,7 " / 120 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,23
   Metacentric height 1,5 ft / 0,5 m
   Roll period: 12,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0,19
   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): 0,424 / 0,437
   Length to Beam Ratio: 10,00 : 1
   'Natural speed' for length: 18,65 kts
   Power going to wave formation at top speed: 66 %
   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:   18,00 %, 20,67 ft / 6,30 m, 16,73 ft / 5,10 m
     - Forward deck:   33,00 %, 16,73 ft / 5,10 m, 13,12 ft / 4,00 m
     - Aft deck:   33,00 %, 13,12 ft / 4,00 m, 11,98 ft / 3,65 m
     - Quarter deck:   16,00 %, 11,98 ft / 3,65 m, 11,98 ft / 3,65 m
     - Average freeboard:      14,28 ft / 4,35 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 169,7 %
      - Above water (accommodation/working, high = better): 152,2 %
   Waterplane Area: 7 561 Square feet or 702 Square metres
   Displacement factor (Displacement / loading): 75 %
   Structure weight / hull surface area: 31 lbs/sq ft or 152 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,55
      - Overall: 0,56
   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
32t for 2x4TTx533HW
10t for 1920 sonar
6t for 30x195 DC
20t reserved for new material, paravanes, armament, minen.
AW
4t for climatisation

Trial speed: 32.5kts
Bonus: 0.46

Jefgte · April 27, 2024, 01:41:49 AM

I will try to replace 4x1x102 on the D8 - 1913-1914 - 1000t by the M2x120 mlle 1926 available... (?)

Jefgte · April 27, 2024, 09:13:07 AM

24 T2x120/45 mlle 1926 from C11 are installed on 12 x D8 destroyers from 1913-1915.
These 1000t destroyers require reconstruction (which I rarely do).

D8	D8 1000t => 1100t		Reconstruction 1932
	1000t => 1100t		20%$ 10%BP	0,2	0,1
		tonnage	coef	$	BP
	new guns	3t	2$ => 1BP	0,006	0,003	40/39 & 12,7
	new mounts	0t	1$ => 1BP	0	0	120/45mlle1926from C11
	new armour	0t	1$ => 1BP	0	0
	new engines	622t	2$ => 1BP	1,244	0,622
25%engines	elec motors	0t	2$ => 1BP	0	0
	new belt	0t	1$ => 1BP	0	0
	new deck	0t	1$ => 1BP	0	0
	new bow	100t	1$ => 1BP	0,2	0,2
				1,65	0,925
	old guns	8t	15%	0,0012	0,0012
	old mounts	16t	15%	0,0024	0,0024
	old armor	3,7	15%	0,00055	0,00055
	old deck	0	15%	0	0
	old engines	586t	15%	0,0879	0,0879
				0,09205	0,09205
Final cost	1,65- 0,09205 =>			1,558$
Final cost	0,925 - 0,09205 =>				0,833BP

Cost per ship:
1.558$ & 0.833BP

D8, Byzantine Empire Colonial Destroyer laid down 1913 (Engine 1932)

Displacement:
1 100 t light; 1 154 t standard; 1 245 t normal; 1 317 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(356,62 ft / 354,33 ft) x 35,43 ft x (8,90 / 9,23 ft)
(108,70 m / 108,00 m) x 10,80 m x (2,71 / 2,81 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, 1926 Model
4 x 2-gun mounts on centreline ends, evenly spread
4 - 1,57" / 40,0 mm 39,0 cal guns - 1,85lbs / 0,84kg shells, 1 500 per gun
Anti-air guns in deck mounts, 1928 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, 3 000 per gun
Machine guns in deck mounts, 1928 Model
2 x 2-gun mounts on sides, forward deck forward
Weight of broadside 208 lbs / 94 kg

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

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 28 220 shp / 21 052 Kw = 32,20 kts
Range 4 000nm at 12,00 kts
Bunker at max displacement = 163 tons

Complement:
104 - 136

Cost:
£0,149 million / $0,594 million

Distribution of weights at normal displacement:
Armament: 39 tons, 3,1 %
- Guns: 39 tons, 3,1 %
Armour: 6 tons, 0,5 %
- Armament: 6 tons, 0,5 %
Machinery: 622 tons, 50,0 %
Hull, fittings & equipment: 370 tons, 29,7 %
Fuel, ammunition & stores: 144 tons, 11,6 %
Miscellaneous weights: 64 tons, 5,1 %
- On freeboard deck: 35 tons
- Above deck: 29 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
413 lbs / 187 Kg = 7,8 x 4,7 " / 120 mm shells or 0,3 torpedoes
Stability (Unstable if below 1.00): 1,21
Metacentric height 1,5 ft / 0,5 m
Roll period: 12,2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0,17
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): 0,390 / 0,398
Length to Beam Ratio: 10,00 : 1
'Natural speed' for length: 18,82 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 69
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: 22,00 %, 21,78 ft / 6,64 m, 19,16 ft / 5,84 m
- Forward deck: 10,00 %, 19,13 ft / 5,83 m, 19,09 ft / 5,82 m
- Aft deck: 48,00 %, 11,22 ft / 3,42 m, 11,22 ft / 3,42 m
- Quarter deck: 20,00 %, 11,22 ft / 3,42 m, 11,22 ft / 3,42 m
- Average freeboard: 13,99 ft / 4,26 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 171,0 %
- Above water (accommodation/working, high = better): 176,9 %
Waterplane Area: 7 676 Square feet or 713 Square metres
Displacement factor (Displacement / loading): 68 %
Structure weight / hull surface area: 30 lbs/sq ft or 146 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,50
- Longitudinal: 1,36
- Overall: 0,55
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

AD
4t for 1924 rangefinder
25t for Marconi
OD
18t for2x3TTx533
10t for 1920 sonar
5T for 50x90kg DC
2t Reserve for paravanes, new armaments, new materials.
BW
climatisation

-------------------
Original built:

D8, Byzantine Empire Long Range Destroyer laid down 1913

Displacement:
1 000 t light; 1 034 t standard; 1 172 t normal; 1 283 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(347,77 ft / 347,77 ft) x 35,43 ft x (8,54 / 9,05 ft)
(106,00 m / 106,00 m) x 10,80 m x (2,60 / 2,76 m)

Armament:
4 - 4,00" / 102 mm 45,0 cal guns - 32,28lbs / 14,64kg shells, 130 per gun
Quick firing guns in deck mounts, 1913 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, 150 per gun
Quick firing gun in deck mount, 1913 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, 1913 Model
2 x Single mounts on sides, forward deck forward
Weight of broadside 143 lbs / 65 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,
Direct drive, 2 shafts, 19 889 shp / 14 837 Kw = 29,78 kts
Range 6 500nm at 10,00 kts
Bunker at max displacement = 249 tons

Complement:
99 - 130

Cost:
£0,135 million / $0,541 million

Distribution of weights at normal displacement:
Armament: 26 tons, 2,2 %
- Guns: 26 tons, 2,2 %
Armour: 7 tons, 0,6 %
- Armament: 7 tons, 0,6 %
Machinery: 586 tons, 50,0 %
Hull, fittings & equipment: 313 tons, 26,7 %
Fuel, ammunition & stores: 172 tons, 14,7 %
Miscellaneous weights: 68 tons, 5,8 %
- On freeboard deck: 40 tons
- Above deck: 28 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
395 lbs / 179 Kg = 12,3 x 4,0 " / 102 mm shells or 0,3 torpedoes
Stability (Unstable if below 1.00): 1,31
Metacentric height 1,7 ft / 0,5 m
Roll period: 11,4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0,13
Seaboat quality (Average = 1.00): 1,01

Hull form characteristics:
Hull has raised forecastle, rise aft of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0,390 / 0,403
Length to Beam Ratio: 9,81 : 1
'Natural speed' for length: 18,65 kts
Power going to wave formation at top speed: 60 %
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: 18,00 %, 18,37 ft / 5,60 m, 16,90 ft / 5,15 m
- Forward deck: 20,00 %, 11,65 ft / 3,55 m, 11,48 ft / 3,50 m
- Aft deck: 42,00 %, 11,58 ft / 3,53 m, 11,58 ft / 3,53 m
- Quarter deck: 20,00 %, 11,58 ft / 3,53 m, 11,58 ft / 3,53 m
- Average freeboard: 12,64 ft / 3,85 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 167,5 %
- Above water (accommodation/working, high = better): 167,8 %
Waterplane Area: 7 534 Square feet or 700 Square metres
Displacement factor (Displacement / loading): 69 %
Structure weight / hull surface area: 28 lbs/sq ft or 135 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,50
- Longitudinal: 0,94
- Overall: 0,53
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

24t for 8TT x 450
3t for 1913 top mast rangefinder
25t for LR marconi
6t for additionnal engines ventillation
10t reserved

Jefgte · April 28, 2024, 01:33:15 AM

This reconstruction will give Byzantium 25 divisions with 4 destroyers (100DDs from 1000t to 1700t) with a homogeneous armament of 120mm guns. 9 divisions use 533TT. 16 divisions use 533TT HW.

Next class use 114/45DP.

Jefgte · April 28, 2024, 10:29:19 AM

First class of Byzantine Destroyer with M2x114/45DP.

D15, Byzantine Empire Heavy Destroyer laid down 1932

Displacement:
   1 890 t light; 2 018 t standard; 2 370 t normal; 2 652 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (401,65 ft / 396,98 ft) x 38,71 ft x (13,04 / 14,07 ft)
   (122,42 m / 121,00 m) x 11,80 m x (3,97 / 4,29 m)

Armament:
6 - 4,49" / 114 mm 45,0 cal guns - 58,00lbs / 26,31kg shells, 320 per gun
     Dual purpose guns in deck mounts, 1932 Model
     3 x 2-gun mounts on centreline ends, majority forward
      1 raised mount - superfiring
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, 1932 Model
     2 x 2-gun mounts on sides, forward deck forward
      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, 1932 Model
     2 x 2-gun mounts on sides, aft deck forward
      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, 1932 Model
     2 x 2-gun mounts on sides, forward deck forward
      2 raised mounts
Weight of broadside 364 lbs / 165 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, 44 440 shp / 33 152 Kw = 32,95 kts
   Range 11 000nm at 12,00 kts
   Bunker at max displacement = 634 tons

Complement:
   169 - 220

Cost:
   £1,119 million / $4,476 million

Distribution of weights at normal displacement:
   Armament: 55 tons, 2,3 %
     - Guns: 55 tons, 2,3 %
   Armour: 5 tons, 0,2 %
     - Armament: 5 tons, 0,2 %
   Machinery: 1 186 tons, 50,0 %
   Hull, fittings & equipment: 534 tons, 22,5 %
   Fuel, ammunition & stores: 480 tons, 20,2 %
   Miscellaneous weights: 110 tons, 4,6 %
     - On freeboard deck: 80 tons
     - Above deck: 30 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     659 lbs / 299 Kg = 14,6 x 4,5 " / 114 mm shells or 0,4 torpedoes
   Stability (Unstable if below 1.00): 1,33
   Metacentric height 2,0 ft / 0,6 m
   Roll period: 11,5 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): 0,414 / 0,429
   Length to Beam Ratio: 10,25 : 1
   'Natural speed' for length: 19,92 kts
   Power going to wave formation at top speed: 63 %
   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:   18,00 %, 21,98 ft / 6,70 m, 17,06 ft / 5,20 m
     - Forward deck:   33,00 %, 17,06 ft / 5,20 m, 13,12 ft / 4,00 m
     - Aft deck:   33,00 %, 13,12 ft / 4,00 m, 12,14 ft / 3,70 m
     - Quarter deck:   16,00 %, 12,14 ft / 3,70 m, 12,47 ft / 3,80 m
     - Average freeboard:      14,54 ft / 4,43 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 170,2 %
      - Above water (accommodation/working, high = better): 149,1 %
   Waterplane Area: 9 542 Square feet or 887 Square metres
   Displacement factor (Displacement / loading): 83 %
   Structure weight / hull surface area: 34 lbs/sq ft or 166 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,11
      - Overall: 0,54
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
5t for1924 top mast rangefinder
25t for LR marconi
OD
48t for 4x3TTx533HW
10t for1920 sonar
6t for 30x195 DC
16t reserved for new material, paravanes, armament, minen.
AW
climatisation

Trial speed: 33.5 kts
Bonus: 0.55

Kaiser Kirk · April 30, 2024, 10:52:57 PM

The D15 destroyer is interesting, I took a long time to develop my Sher
which is similar, but a little larger, as I shipped more fuel.

Large torpedo array, but
I noted that it only has Sonar.

Sonar is relatively short range, directional and make active pings.
The Enhanced hydrophones give passive results over a larger distance.

I would suggest both be fitted.

Jefgte · May 01, 2024, 01:15:49 AM

The Marmara Fleet (Home Fleet) has 52DD (13x4) from 1500t to 1700t.
I am also working on a 1000t/1200t colonial DD.

Assignment	Class	Name	Tonnage
Marmara	D14-Kobra	D185-D186-D187-D188	1500
Marmara	D14-Kobra	D181-D182-D183-D184	1500
Marmara	D14-Kobra	D177-D178-D179-D180	1500
Marmara	D13	D173-D174-D175-D176	1700
Marmara	D13	D169-D170-D171-D172	1700
Marmara	D12	D165-D166-D167-D168	1600
Marmara	D12	D161-D162-D163-D164	1600
Marmara	D12	D157-D158-D159-D160	1600
Marmara	D12	D153-D154-D155-D156	1600
Marmara	D11	D149-D150-D151-D152	1500
Marmara	D11	D145-D146-D147-D148	1500
Marmara	D11	D141-D142-D143-D144	1500
Marmara	D11	D137-D138-D139-D140	1500
Atlantique	D10	D133-D134-D135-D136	1400
Madagascar	D10	D129-D130-D131-D132	1400
Madagascar	D10	D125-D126-D127-D128	1400
Madagascar	D9	D121-D122-D123-D124	1140
Australia	D9	D117-D118-D119-D120	1140
Australia	D9	D113-D114-D115-D116	1140
Australia	D9	D109-D110-D111-D112	1140
Atlantique	D8	D105-D106-D107-D108	1100
Atlantique	D8	D101-D102-D103-D104	1000
Atlantique	D8	D97-D98-D99-D100	1000
Red Sea	D7	D93-D94-D95-D96	1000
Madagascar	D1000	D89-D90-D91- D92	1000

Assignment	Class	Name	Tonnage
Red Sea-Aden	T500H	T252-T253-T254-T255	500
Red Sea-Aden	T500H	T252-T253-T254-T255	500
Red Sea-Aden	T500H	T252-T253-T254-T255	500
Red Sea-Aden	T500M	T248-T249-T250-T251	500
Red Sea-Aden	T500M	T244-T245-T246-T247	500
Red Sea-Aden	T500M	T240-T241-T242-T243	500
Red Sea-Aden	T500M	T236-T237-T238-T239	500
Red Sea-Aden	T500M	T232-T233-T234-T235	500
Red Sea-Aden	T500M	T228-T229-T230-T231	500
Red Sea-Aden	T500M	T224-T225-T226-T227	500
Red Sea-Aden	T500M	T220-T221-T222-T223	500
Red Sea-Aden	T500M	T216-T217-T218-T219	500
Red Sea-Aden	T500A	T212-T213-T214-T215	500
Red Sea-Aden	T500A	T208-T209-T210-T211	500
Red Sea-Aden	T500A	T204-T205-T206-T207	500
Red Sea-Aden	T500A	T200-T201-T202-T203	500
Red Sea-Aden	T500A	T196-T197-T198-T199	500
Australia	T840	T187-T188-T189	840
Australia	T840	T184-T185-T186	840
Marmara-Egee	T400	T180-T181-T182-T183	400
Marmara-Egee	T400	T176-T177-T178-T179	400
Marmara-Egee	T400	T172-T173-T174-T175	400
Marmara-Egee	T400	T168-T169-T170-T171	400
Marmara-Egee	T400	T164-T165-T166-T167	400
Marmara-Egee	T400	T160-T161-T162-T163	400
Atlantique	T600	T156-T157-T158-T159	600
Atlantique	T600	T152-T153-T154-T155	600
Atlantique	T600	T148-T149-T150-T151	600
Madagascar	D6	T85-T86-T87- T88	750
Madagascar	D5	T81-T82-T83-T84	750
Madagascar	D5	T77-T78-T79-T80	750

Jefgte · May 01, 2024, 09:39:02 AM

Quote...Sonar is relatively short range, directional and make active pings.
The Enhanced hydrophones give passive results over a larger distance.

I would suggest both be fitted.

Update from 1890t to 1900t

D15, Byzantine Empire Heavy Destroyer laid down 1932

Displacement:
   1 900 t light; 2 028 t standard; 2 381 t normal; 2 664 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (401,65 ft / 396,98 ft) x 38,71 ft x (13,10 / 14,13 ft)
   (122,42 m / 121,00 m) x 11,80 m x (3,99 / 4,31 m)

Armament:
6 - 4,49" / 114 mm 45,0 cal guns - 58,00lbs / 26,31kg shells, 320 per gun
     Dual purpose guns in deck mounts, 1932 Model
     3 x 2-gun mounts on centreline ends, majority forward
      1 raised mount - superfiring
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, 1932 Model
     2 x 2-gun mounts on sides, forward deck forward
      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, 1932 Model
     2 x 2-gun mounts on sides, aft deck forward
      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, 1932 Model
     2 x 2-gun mounts on sides, forward deck forward
      2 raised mounts
Weight of broadside 364 lbs / 165 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, 44 580 shp / 33 256 Kw = 32,95 kts
   Range 11 000nm at 12,00 kts
   Bunker at max displacement = 636 tons

Complement:
   169 - 221

Cost:
   £1,123 million / $4,493 million

Distribution of weights at normal displacement:
   Armament: 55 tons, 2,3 %
     - Guns: 55 tons, 2,3 %
   Armour: 5 tons, 0,2 %
     - Armament: 5 tons, 0,2 %
   Machinery: 1 190 tons, 50,0 %
   Hull, fittings & equipment: 535 tons, 22,5 %
   Fuel, ammunition & stores: 481 tons, 20,2 %
   Miscellaneous weights: 115 tons, 4,8 %
     - Hull above water: 15 tons
     - On freeboard deck: 70 tons
     - Above deck: 30 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     657 lbs / 298 Kg = 14,5 x 4,5 " / 114 mm shells or 0,4 torpedoes
   Stability (Unstable if below 1.00): 1,33
   Metacentric height 2,0 ft / 0,6 m
   Roll period: 11,5 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): 0,414 / 0,429
   Length to Beam Ratio: 10,25 : 1
   'Natural speed' for length: 19,92 kts
   Power going to wave formation at top speed: 63 %
   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:   18,00 %, 21,98 ft / 6,70 m, 17,06 ft / 5,20 m
     - Forward deck:   33,00 %, 17,06 ft / 5,20 m, 13,12 ft / 4,00 m
     - Aft deck:   33,00 %, 13,12 ft / 4,00 m, 12,14 ft / 3,70 m
     - Quarter deck:   16,00 %, 12,14 ft / 3,70 m, 12,47 ft / 3,80 m
     - Average freeboard:      14,54 ft / 4,43 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 170,6 %
      - Above water (accommodation/working, high = better): 149,1 %
   Waterplane Area: 9 542 Square feet or 887 Square metres
   Displacement factor (Displacement / loading): 83 %
   Structure weight / hull surface area: 34 lbs/sq ft or 166 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,11
      - Overall: 0,54
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
5t for1924 top mast rangefinder
25t for LR marconi
OD
48t for 4x3TTx533HW
10t for1920 sonar
6t for 30x195 DC
6t reserved for new material, paravanes, armament, minen.
AW
15t for enhanced hydrophone
climatisation

Trial speed: 33.5 kts
Bonus: 0.55

Kaiser Kirk · May 01, 2024, 10:08:47 AM

Quote from: Jefgte on May 01, 2024, 01:15:49 AMThe Marmara Fleet (Home Fleet) has 52DD (13x4) from 1500t to 1700t.
I am also working on a 1000t/1200t colonial DD.

The Parthian fleet destroyers are all smaller at 1140-1500 tons.
I deliberately continued the smaller sizes to be able to field
the number of platforms I needed. While my Home fleet has fewer Destroyers
assigned than yours, if reinforced by the Expeditionary fleet, there are more,
if individually less capable.

While in 1932 I am building the 1st of the Sher 2000t class
I am also continuing construction of the older 1140t Vakharz class.
It's a balanced design that does the roles well. That may eventually
become the territorial DD, or I may build a new one.

The 50% rule on machinery makes me not want to update it, as I will
need a higher speed for the same machinery weight, which will mean more
seakeeping, which means more hull structure, leaving less weight for
equipment. So I keep building the 1926 class.