Byzantine Empire 1936 - 1937

Kaiser Kirk · February 24, 2025, 10:08:55 PM

Well it does seem the 2xT3 vs 2xT4 gun choice does 'pay' for your faster vessel. Looking at my 24kt & 333mm versions, they had a higher displacement, but much heavier armor as well. So overall I am just making different design choices.

I want to be able to keep my 1st rate battleships and carriers together in the main fleets,
while cheaper ships do supporting roles. Those ships have to be adequate against the both known (posted) vessels and unknown (projected NPC) ships. I do tend to make the operating assumption that 45000 ton vessels will not be used for solo raids, so my coastal forces are unlikely to face those. I am also trying to make them more difficult for aerial forces to take out with the armored upper citadel. However I do try for shallow drafts, so the coastal forces can withdraw to areas BBs may not be able to reach - your drafts are about the same.

Jefgte · February 28, 2025, 04:02:36 PM

BB25 Kalin & BB26 Kurnaz , LD in 1916 need refurbishment.

Coal boilers => oil boilers
12x152mm casemates => 4T2x133mm
16x40mm => 24x40mm
Deck 80mm => 100mm

BB25	Kalin		Refurbishment 1936
	15300t=>15460t		0,2$ - 0BP	3,06	0
		tonnage	coef	$	BP
	new guns	39t	2$ => 1BP	0,078	0,039
	new mounts	158t	1$ => 1BP	0,158	0,158
	new armour	23t	1$ => 1BP	0,023	0,023
	new engines	1122t	2$ => 1BP	2,244	1,122
25%engines	elec motors	t	2$ => 1BP	0	0
	new belt	t	1$ => 1BP	0	0
	new deck	529t	1$ => 1BP	0,529	0,529
	new bow	t	1$ => 1BP	0	0
				6,092	1,871
	old guns	74t	15%	0,0111	0,0111
	old mounts	149t	15%	0,02235	0,02235
	old armor	44t	15%	0,0066	0,0066
	old deck	0t	15%	0	0
	old engines	1518t	15%	0,2277	0,2277
			15%	0,26775	0,26775
Final cost	6,092- 0,26775 =>			5,82$
Final cost	1,871 - 0,26775 =>				1,6BP

BB25-Kurnaz - BB26-Kalin, Byzantine Empire Colonial Battleship laid down 1916 (Engine 1936)

Displacement:
15 460 t light; 16 390 t standard; 17 252 t normal; 17 942 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(492,13 ft / 492,13 ft) x 85,30 ft x (22,62 / 23,38 ft)
(150,00 m / 150,00 m) x 26,00 m x (6,89 / 7,13 m)

Armament:
6 - 13,50" / 343 mm 45,0 cal guns - 1 266,01lbs / 574,25kg shells, 100 per gun
Breech loading guns in turret on barbette mounts, 1916 Model
2 x Triple mounts on centreline ends, evenly spread
8 - 5,24" / 133 mm 50,0 cal guns - 80,01lbs / 36,29kg shells, 300 per gun
Dual purpose guns in deck and hoist mounts, 1936 Model
4 x 2-gun mounts on sides, evenly spread
24 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
Anti-air guns in deck mounts, 1928 Model
12 x 2-gun mounts on sides, evenly spread
12 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 side ends, evenly spread
8 raised mounts
Weight of broadside 8 285 lbs / 3 758 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13,4" / 340 mm 319,88 ft / 97,50 m 10,50 ft / 3,20 m
Ends: 1,97" / 50 mm 172,21 ft / 52,49 m 9,84 ft / 3,00 m
Upper: 3,54" / 90 mm 319,88 ft / 97,50 m 8,01 ft / 2,44 m
Main Belt covers 100 % of normal length

- Torpedo Bulkhead - Additional damage containing bulkheads:
1,57" / 40 mm 319,88 ft / 97,50 m 21,82 ft / 6,65 m
Beam between torpedo bulkheads 65,62 ft / 20,00 m

- Hull void:
0,32" / 8 mm 1,03 ft / 0,32 m 3,39 ft / 1,03 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 13,4" / 340 mm 4,72" / 120 mm 11,8" / 300 mm
3rd: 0,98" / 25 mm 0,59" / 15 mm 0,79" / 20 mm
4th: 0,24" / 6 mm - -
5th: 0,39" / 10 mm - -

- Armoured deck - single deck:
For and Aft decks: 3,94" / 100 mm
Forecastle: 0,98" / 25 mm Quarter deck: 3,15" / 80 mm

- Conning towers: Forward 11,81" / 300 mm, Aft 5,91" / 150 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 40 000 shp / 29 840 Kw = 23,15 kts
Range 8 000nm at 12,00 kts
Bunker at max displacement = 1 552 tons

Complement:
752 - 978

Cost:
£2,389 million / $9,558 million

Distribution of weights at normal displacement:
Armament: 1 484 tons, 8,6 %
- Guns: 1 484 tons, 8,6 %
Armour: 6 377 tons, 37,0 %
- Belts: 2 530 tons, 14,7 %
- Torpedo bulkhead: 407 tons, 2,4 %
- Void: 0 tons, 0,0 %
- Armament: 1 039 tons, 6,0 %
- Armour Deck: 2 147 tons, 12,4 %
- Conning Towers: 255 tons, 1,5 %
Machinery: 1 122 tons, 6,5 %
Hull, fittings & equipment: 6 020 tons, 34,9 %
Fuel, ammunition & stores: 1 792 tons, 10,4 %
Miscellaneous weights: 456 tons, 2,6 %
- Hull below water: 75 tons
- Hull above water: 75 tons
- On freeboard deck: 113 tons
- Above deck: 193 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
27 658 lbs / 12 545 Kg = 22,5 x 13,5 " / 343 mm shells or 5,3 torpedoes
Stability (Unstable if below 1.00): 1,17
Metacentric height 5,3 ft / 1,6 m
Roll period: 15,6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0,54
Seaboat quality (Average = 1.00): 1,08

Hull form characteristics:
Hull has a flush deck,
a ram bow and a cruiser stern
Block coefficient (normal/deep): 0,636 / 0,640
Length to Beam Ratio: 5,77 : 1
'Natural speed' for length: 22,18 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 65
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 %, 24,57 ft / 7,49 m, 20,14 ft / 6,14 m
- Forward deck: 32,00 %, 20,14 ft / 6,14 m, 15,68 ft / 4,78 m
- Aft deck: 33,00 %, 15,68 ft / 4,78 m, 15,68 ft / 4,78 m
- Quarter deck: 17,50 %, 15,68 ft / 4,78 m, 15,68 ft / 4,78 m
- Average freeboard: 17,49 ft / 5,33 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 82,2 %
- Above water (accommodation/working, high = better): 134,9 %
Waterplane Area: 31 747 Square feet or 2 949 Square metres
Displacement factor (Displacement / loading): 106 %
Structure weight / hull surface area: 156 lbs/sq ft or 763 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,93
- Longitudinal: 1,79
- Overall: 1,00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

AD
148t for Fire Control - 1930
25t for Marconi
20t for hulsmeyer
OD
20t for night fighting
24t for 2x3TTx533HW
15t for enhanced hydrophone
25t for 1 seaplane+cata
29t reserved for new materials, armament...
AW
75t for climatisation
BW
75t for additionnal pumps
--------------------

Note that 1913 BC3 Gaqus & BC4 Gadhla very similar but built as "Little Battle Cruiser"
need similar 1936 refurbishment:

Coal boilers (27kts) => oil boilers (27kts)
12x152mm casemates => 4T2x133mm
16x40mm => 24x40mm
Deck 65mm => 90mm

Jefgte · March 01, 2025, 06:54:51 AM

1913 BC3 Gaqus & BC4 Gadhla built as "Light Battle Cruiser"
need similar 1936 refurbishment:

Coal boilers (27kts) => oil boilers (27kts)
12x152mm casemates => 4T2x133mm
16x40mm => 24x40mm
Deck 65mm => 95mm

BC3	Gaqus		Refurbishment 1936
	15800t=>15960t		0,2$ - 0BP	3,16	0
		tonnage	coef	$	BP
	new guns	39t	2$ => 1BP	0,078	0,039
	new mounts	158t	1$ => 1BP	0,158	0,158
	new armour	23t	1$ => 1BP	0,023	0,023
	new engines	1867t	2$ => 1BP	3,734	1,867
25%engines	elec motors	t	2$ => 1BP	0	0
	new belt	107t	1$ => 1BP	0,107	0,107
	new deck	719t	1$ => 1BP	0,719	0,719
	new bow	74t	1$ => 1BP	0,074	0,074
				8,053	2,987
	old guns	74t	15%	0,0111	0,0111
	old mounts	149t	15%	0,02235	0,02235
	old armor	44t	15%	0,0066	0,0066
	old deck	0t	15%	0	0
	old engines	2655t	15%	0,398	0,398
			15%	0,43805	0,43805
Final cost	8,053- 0,43805 =>			7,61495$
Final cost	2,987 - 0,43805 =>				2,54895BP

BC3-Gaqus - BC4-Gadhla, Byzantine Empire Light Battle cruiser laid down 1913 (Engine 1936)

Displacement:
15 960 t light; 16 903 t standard; 17 976 t normal; 18 834 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(573,00 ft / 573,00 ft) x 82,00 ft x (24,57 / 25,49 ft)
(174,65 m / 174,65 m) x 24,99 m x (7,49 / 7,77 m)

Armament:
6 - 13,50" / 343 mm 45,0 cal guns - 1 266,01lbs / 574,25kg shells, 100 per gun
Breech loading guns in turret on barbette mounts, 1913 Model
3 x Twin mounts on centreline ends, majority forward
8 - 5,24" / 133 mm 50,0 cal guns - 80,01lbs / 36,29kg shells, 300 per gun
Dual purpose guns in deck and hoist mounts, 1936 Model
4 x 2-gun mounts on sides, evenly spread
24 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
Anti-air guns in deck mounts, 1928 Model
12 x 2-gun mounts on sides, evenly spread
12 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 2-gun mounts on side ends, evenly spread
4 raised mounts
Weight of broadside 8 285 lbs / 3 758 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 9,06" / 230 mm 374,02 ft / 114,00 m 10,50 ft / 3,20 m
Ends: 1,97" / 50 mm 198,82 ft / 60,60 m 9,84 ft / 3,00 m
Upper: 3,54" / 90 mm 374,02 ft / 114,00 m 8,99 ft / 2,74 m
Main Belt covers 100 % of normal length

- Hull void:
0,98" / 25 mm 374,02 ft / 114,00 m 22,60 ft / 6,89 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10,1" / 255 mm 2,97" / 75 mm 9,05" / 230 mm
3rd: 0,98" / 25 mm 0,59" / 15 mm 0,79" / 20 mm
4th: 0,24" / 6 mm - -
5th: 0,24" / 6 mm - -

- Armoured deck - single deck:
For and Aft decks: 3,74" / 95 mm
Forecastle: 0,98" / 25 mm Quarter deck: 2,95" / 75 mm

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

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 66 522 shp / 49 626 Kw = 27,00 kts
Range 10 000nm at 12,00 kts
Bunker at max displacement = 1 931 tons

Complement:
776 - 1 009

Cost:
£1,725 million / $6,902 million

Distribution of weights at normal displacement:
Armament: 1 483 tons, 8,3 %
- Guns: 1 483 tons, 8,3 %
Armour: 5 690 tons, 31,7 %
- Belts: 2 171 tons, 12,1 %
- Void: 308 tons, 1,7 %
- Armament: 938 tons, 5,2 %
- Armour Deck: 2 098 tons, 11,7 %
- Conning Towers: 175 tons, 1,0 %
Machinery: 1 867 tons, 10,4 %
Hull, fittings & equipment: 6 450 tons, 35,9 %
Fuel, ammunition & stores: 2 016 tons, 11,2 %
Miscellaneous weights: 470 tons, 2,6 %
- Hull below water: 80 tons
- Hull above water: 80 tons
- On freeboard deck: 117 tons
- Above deck: 193 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
24 102 lbs / 10 932 Kg = 19,6 x 13,5 " / 343 mm shells or 3,0 torpedoes
Stability (Unstable if below 1.00): 1,09
Metacentric height 4,4 ft / 1,3 m
Roll period: 16,4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0,67
Seaboat quality (Average = 1.00): 1,08

Hull form characteristics:
Hull has raised forecastle,
a ram bow and a cruiser stern
Block coefficient (normal/deep): 0,545 / 0,550
Length to Beam Ratio: 6,99 : 1
'Natural speed' for length: 23,94 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 65
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 %, 26,57 ft / 8,10 m, 21,95 ft / 6,69 m
- Forward deck: 32,00 %, 19,98 ft / 6,09 m, 16,99 ft / 5,18 m
- Aft deck: 33,00 %, 16,99 ft / 5,18 m, 15,98 ft / 4,87 m
- Quarter deck: 17,50 %, 15,98 ft / 4,87 m, 15,98 ft / 4,87 m
- Average freeboard: 18,32 ft / 5,58 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 74,0 %
- Above water (accommodation/working, high = better): 140,0 %
Waterplane Area: 32 638 Square feet or 3 032 Square metres
Displacement factor (Displacement / loading): 105 %
Structure weight / hull surface area: 153 lbs/sq ft or 745 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,95
- Longitudinal: 1,58
- Overall: 1,00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

AD
148t for 1913 Fire Control
25t for Marconi
20t Hulesmeyer
OD
20t for night fighting
24t for 2x3TTx533HW
15t for enhanced hydrophone
25t for 1 seaplane+ cata
33t reserved
AW
80t for additionnal ventilation
BW
80t for additionnal pumps

Jefgte · March 04, 2025, 04:00:31 PM

TGB500D, Byzantine Empire TGB500 laid down 1937

Displacement:
500 t light; 545 t standard; 585 t normal; 618 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(245,20 ft / 242,78 ft) x 26,25 ft x (8,04 / 8,33 ft)
(74,74 m / 74,00 m) x 8,00 m x (2,45 / 2,54 m)

Armament:
2 - 4,49" / 114 mm 45,0 cal guns - 58,00lbs / 26,31kg shells, 300 per gun
Dual purpose guns in deck mounts, 1937 Model
2 x Single mounts on centreline ends, evenly spread
6 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
Anti-air guns in deck mounts, 1937 Model
2 x 2-gun mounts on sides, forward deck centre
2 raised mounts
1 x 2-gun mount on centreline, aft deck aft
1 raised mount
4 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
Machine guns in deck mounts, 1937 Model
2 x 2-gun mounts on sides, forward deck forward
2 raised mounts
Weight of broadside 128 lbs / 58 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, 7 600 shp / 5 670 Kw = 25,06 kts
Range 4 500nm at 10,00 kts
Bunker at max displacement = 73 tons

Complement:
59 - 77

Cost:
£0,284 million / $1,136 million

Distribution of weights at normal displacement:
Armament: 20 tons, 3,4 %
- Guns: 20 tons, 3,4 %
Armour: 3 tons, 0,6 %
- Armament: 3 tons, 0,6 %
Machinery: 211 tons, 36,0 %
Hull, fittings & equipment: 217 tons, 37,0 %
Fuel, ammunition & stores: 86 tons, 14,6 %
Miscellaneous weights: 49 tons, 8,4 %
- On freeboard deck: 47 tons
- Above deck: 2 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
438 lbs / 199 Kg = 9,7 x 4,5 " / 114 mm shells or 0,3 torpedoes
Stability (Unstable if below 1.00): 1,16
Metacentric height 0,9 ft / 0,3 m
Roll period: 11,7 seconds
Steadiness - As gun platform (Average = 50 %): 72 %
- Recoil effect (Restricted arc if above 1.00): 0,34
Seaboat quality (Average = 1.00): 1,44

Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0,400 / 0,407
Length to Beam Ratio: 9,25 : 1
'Natural speed' for length: 15,58 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 50
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 %, 17,22 ft / 5,25 m, 13,62 ft / 4,15 m
- Forward deck: 33,00 %, 13,62 ft / 4,15 m, 10,66 ft / 3,25 m
- Aft deck: 33,00 %, 10,66 ft / 3,25 m, 10,01 ft / 3,05 m
- Quarter deck: 16,00 %, 10,01 ft / 3,05 m, 10,01 ft / 3,05 m
- Average freeboard: 11,73 ft / 3,57 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 130,1 %
- Above water (accommodation/working, high = better): 142,3 %
Waterplane Area: 3 922 Square feet or 364 Square metres
Displacement factor (Displacement / loading): 112 %
Structure weight / hull surface area: 30 lbs/sq ft or 145 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,63
- Longitudinal: 3,19
- Overall: 0,75
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

AD
2t for 1930 fire control
OD
9t for 1x3TTx533t
5t for night fighting
15t for enhanced hydrophone
6t for 30x191 DC
2t for 2Y DC
2t for paravanes
8t reserved
AW
engines ventillation

1890nm@15kts
945nm@20kts
495nm@25kts

Jefgte · March 09, 2025, 05:08:55 PM

As a replacement for the old colonial TGBs and Torpedo Boats.
Not too expensive and more efficient.

D1160, Byzantine Empire D1160 laid down 1937

Displacement:
1 160 t light; 1 238 t standard; 1 349 t normal; 1 438 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(331,61 ft / 328,08 ft) x 32,81 ft x (10,60 / 11,06 ft)
(101,08 m / 100,00 m) x 10,00 m x (3,23 / 3,37 m)

Armament:
4 - 4,49" / 114 mm 45,0 cal guns - 58,00lbs / 26,31kg shells, 250 per gun
Dual purpose guns in deck mounts, 1937 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, 1937 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, 1937 Model
2 x Single 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, 1937 Model
2 x 2-gun mounts on sides, forward deck forward
2 raised mounts
Weight of broadside 248 lbs / 113 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0,59" / 15 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, 31 360 shp / 23 395 Kw = 32,17 kts
Range 5 000nm at 12,00 kts
Bunker at max displacement = 200 tons

Complement:
110 - 144

Cost:
£0,789 million / $3,157 million

Distribution of weights at normal displacement:
Armament: 38 tons, 2,8 %
- Guns: 38 tons, 2,8 %
Armour: 5 tons, 0,4 %
- Armament: 5 tons, 0,4 %
Machinery: 675 tons, 50,0 %
Hull, fittings & equipment: 369 tons, 27,3 %
Fuel, ammunition & stores: 189 tons, 14,0 %
Miscellaneous weights: 74 tons, 5,5 %
- On freeboard deck: 70 tons
- Above deck: 4 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
410 lbs / 186 Kg = 9,1 x 4,5 " / 114 mm shells or 0,3 torpedoes
Stability (Unstable if below 1.00): 1,18
Metacentric height 1,3 ft / 0,4 m
Roll period: 12,2 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0,28
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): 0,414 / 0,423
Length to Beam Ratio: 10,00 : 1
'Natural speed' for length: 18,11 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 69
Bow angle (Positive = bow angles forward): 10,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 18,00 %, 20,01 ft / 6,10 m, 16,40 ft / 5,00 m
- Forward deck: 33,00 %, 16,40 ft / 5,00 m, 12,63 ft / 3,85 m
- Aft deck: 33,00 %, 12,63 ft / 3,85 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: 13,98 ft / 4,26 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 171,5 %
- Above water (accommodation/working, high = better): 155,2 %
Waterplane Area: 6 683 Square feet or 621 Square metres
Displacement factor (Displacement / loading): 71 %
Structure weight / hull surface area: 31 lbs/sq ft or 150 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,50
- Longitudinal: 1,87
- Overall: 0,57
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

AD
4t for top fire control
SR Marconi
OD
20t for 1x5TTx533HW
5t for night fighting
15t for enhanced hydrophone
6t for 30x195 DC
2t for Y DC
2t for paravanes
20t reserved for new materials, armament or 20 minen...
AW
Climatisation

3050nm@15kts
1500nm@20kts
894nm@25kts
500nm@30kts

Trial speed: 33kts
Bonus: 0.83

Jefgte · March 12, 2025, 05:10:01 PM

T1000 => "Hasta la vista Baby"

T1000, Byzantine Empire Colonial Torpedo Boat laid down 1937

Displacement:
   1 000 t light; 1 076 t standard; 1 159 t normal; 1 224 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (325,01 ft / 321,52 ft) x 32,15 ft x (9,81 / 10,17 ft)
   (99,06 m / 98,00 m) x 9,80 m x (2,99 / 3,10 m)

Armament:
4 - 4,49" / 114 mm 45,0 cal guns - 58,00lbs / 26,31kg shells, 280 per gun
     Dual purpose guns in deck mounts, 1937 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, 1 800 per gun
     Anti-air guns in deck mounts, 1937 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, 1 800 per gun
     Anti-air guns in deck mounts, 1937 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, 1937 Model
     2 x 2-gun mounts on sides, forward deck forward
      2 raised mounts
Weight of broadside 248 lbs / 113 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, 27 851 shp / 20 777 Kw = 32,00 kts
   Range 4 000nm at 12,00 kts
   Bunker at max displacement = 148 tons

Complement:
   99 - 129

Cost:
   £0,686 million / $2,743 million

Distribution of weights at normal displacement:
   Armament: 38 tons, 3,3 %
     - Guns: 38 tons, 3,3 %
   Armour: 4 tons, 0,3 %
     - Armament: 4 tons, 0,3 %
   Machinery: 579 tons, 50,0 %
   Hull, fittings & equipment: 335 tons, 28,9 %
   Fuel, ammunition & stores: 158 tons, 13,6 %
   Miscellaneous weights: 45 tons, 3,9 %
     - On freeboard deck: 41 tons
     - Above deck: 4 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     362 lbs / 164 Kg = 8,0 x 4,5 " / 114 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,20
   Metacentric height 1,3 ft / 0,4 m
   Roll period: 12,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,30
   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): 0,400 / 0,408
   Length to Beam Ratio: 10,00 : 1
   'Natural speed' for length: 17,93 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   18,00 %, 19,77 ft / 6,03 m, 15,83 ft / 4,83 m
     - Forward deck:   33,00 %, 15,83 ft / 4,83 m, 12,22 ft / 3,73 m
     - Aft deck:   33,00 %, 12,22 ft / 3,73 m, 11,56 ft / 3,53 m
     - Quarter deck:   16,00 %, 11,56 ft / 3,53 m, 11,56 ft / 3,53 m
     - Average freeboard:      13,54 ft / 4,13 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 173,2 %
      - Above water (accommodation/working, high = better): 158,7 %
   Waterplane Area: 6 363 Square feet or 591 Square metres
   Displacement factor (Displacement / loading): 69 %
   Structure weight / hull surface area: 30 lbs/sq ft or 147 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,85
      - 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 for 1930 fire control
Short Marconi
OD
12t for 1x4TTx533
15t for enhanced hydrophone
5t for 25 x 191 DC
5t for night fighting
4t reserved
AW
climatisation

5950nm@10kts
4000nm@12kts
2440nm@15kts
1200nm@20kts
640nm@25kts
400nm@30kts

Trial speed: 33kts
Bonus: 0.95

Jefgte · March 13, 2025, 04:52:35 PM

Quote...The 1933 BC7 class is new (and has an error on TDS beam)...

Where ???

Barbarossa II - Mehmed II, Byzantine Empire BC7-BC8 laid down 1933

Displacement:
   46 975 t light; 49 829 t standard; 52 462 t normal; 54 569 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (771,16 ft / 768,37 ft) x 121,39 ft x (31,45 / 32,50 ft)
   (235,05 m / 234,20 m) x 37,00 m x (9,59 / 9,91 m)

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13,8" / 350 mm   499,44 ft / 152,23 m   13,22 ft / 4,03 m
   Ends:   3,94" / 100 mm   268,90 ft / 81,96 m   13,22 ft / 4,03 m
   Upper:   3,94" / 100 mm   499,44 ft / 152,23 m   8,01 ft / 2,44 m
     Main Belt covers 100 % of normal length

- Torpedo Bulkhead - Strengthened structural bulkheads:
      1,97" / 50 mm   499,44 ft / 152,23 m   29,95 ft / 9,13 m
   Beam between torpedo bulkheads 88,58 ft / 27,00 m

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15,0" / 380 mm   6,69" / 170 mm      13,8" / 350 mm
   2nd:   1,97" / 50 mm   1,57" / 40 mm      1,57" / 40 mm
   4th:   0,39" / 10 mm     -           -
   5th:   0,39" / 10 mm     -           -

- Armoured deck - single deck:
   For and Aft decks: 6,30" / 160 mm
   Forecastle: 3,94" / 100 mm Quarter deck: 4,72" / 120 mm

- Conning towers: Forward 13,78" / 350 mm, Aft 5,91" / 150 mm

Jefgte · March 14, 2025, 10:10:20 AM

in 1937H1, on BB27 & BB28 old 10T2x120/45QF were removed & new 10T2x114/45DP installed.

Cost: 0.259$ & 0.203BP

Byzantine Empire BB27 laid down 1923

BB27-Justinianus- LD 1923
BB28-Abdul Kadir- LD 1924

Displacement:
34 000 t light; 36 335 t standard; 38 727 t normal; 40 641 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(671,03 ft / 666,01 ft) x 108,27 ft (Bulges 118,11 ft) x (27,09 / 28,32 ft)
(204,53 m / 203,00 m) x 33,00 m (Bulges 36,00 m) x (8,26 / 8,63 m)

Armament:
12 - 15,00" / 381 mm 42,0 cal guns - 1 920,01lbs / 870,90kg shells, 100 per gun
Breech loading guns in turret on barbette mounts, 1923 Model
4 x 3-gun mounts on centreline ends, evenly spread
2 raised mounts - superfiring
20 - 4,49" / 114 mm 45,0 cal guns - 58,00lbs / 26,31kg shells, 320 per gun
Dual purpose guns in deck and hoist mounts, 1936 Model
10 x Twin mounts on sides, evenly spread
32 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
Anti-air guns in deck mounts, 1936 Model
8 x 4-gun mounts on side ends, evenly spread
8 raised mounts
16 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
Machine guns in deck mounts, 1936 Model
8 x 2-gun mounts on sides, evenly spread
8 raised mounts
Weight of broadside 24 265 lbs / 11 007 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13,4" / 340 mm 433,07 ft / 132,00 m 12,47 ft / 3,80 m
Ends: 1,97" / 50 mm 232,94 ft / 71,00 m 9,84 ft / 3,00 m
Upper: 3,94" / 100 mm 433,07 ft / 132,00 m 12,47 ft / 3,80 m
Main Belt covers 100 % of normal length

- Torpedo Bulkhead - Strengthened structural bulkheads:
1,97" / 50 mm 433,07 ft / 132,00 m 24,61 ft / 7,50 m
Beam between torpedo bulkheads 91,86 ft / 28,00 m

- Hull Bulges:
0,98" / 25 mm 433,07 ft / 132,00 m 26,25 ft / 8,00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15,0" / 380 mm 4,72" / 120 mm 13,4" / 340 mm
2nd: 0,39" / 10 mm - -
3rd: 0,24" / 6 mm - -
4th: 0,24" / 6 mm - -

- Armoured deck - multiple decks:
For and Aft decks: 4,53" / 115 mm
Forecastle: 1,57" / 40 mm Quarter deck: 1,57" / 40 mm

- Conning towers: Forward 13,39" / 340 mm, Aft 5,91" / 150 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 42 000 shp / 31 332 Kw = 21,08 kts
Range 12 000nm at 12,00 kts
Bunker at max displacement = 4 306 tons

Complement:
1 379 - 1 794

Cost:
£9,269 million / $37,076 million

Distribution of weights at normal displacement:
Armament: 3 942 tons, 10,2 %
- Guns: 3 942 tons, 10,2 %
Armour: 13 436 tons, 34,7 %
- Belts: 4 289 tons, 11,1 %
- Torpedo bulkhead: 776 tons, 2,0 %
- Bulges: 414 tons, 1,1 %
- Armament: 3 455 tons, 8,9 %
- Armour Deck: 4 026 tons, 10,4 %
- Conning Towers: 476 tons, 1,2 %
Machinery: 1 404 tons, 3,6 %
Hull, fittings & equipment: 14 238 tons, 36,8 %
Fuel, ammunition & stores: 4 727 tons, 12,2 %
Miscellaneous weights: 981 tons, 2,5 %
- Hull below water: 170 tons
- Hull above water: 170 tons
- On freeboard deck: 200 tons
- Above deck: 441 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
67 538 lbs / 30 635 Kg = 40,0 x 15,0 " / 381 mm shells or 13,2 torpedoes
Stability (Unstable if below 1.00): 1,21
Metacentric height 8,0 ft / 2,4 m
Roll period: 17,6 seconds
Steadiness - As gun platform (Average = 50 %): 75 %
- Recoil effect (Restricted arc if above 1.00): 0,66
Seaboat quality (Average = 1.00): 1,34

Hull form characteristics:
Hull has a flush deck,
a ram bow and a cruiser stern
Block coefficient (normal/deep): 0,636 / 0,638
Length to Beam Ratio: 5,64 : 1
'Natural speed' for length: 25,81 kts
Power going to wave formation at top speed: 42 %
Trim (Max stability = 0, Max steadiness = 100): 56
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 %, 28,44 ft / 8,67 m, 22,54 ft / 6,87 m
- Forward deck: 32,50 %, 22,54 ft / 6,87 m, 18,93 ft / 5,77 m
- Aft deck: 32,50 %, 18,93 ft / 5,77 m, 18,93 ft / 5,77 m
- Quarter deck: 17,50 %, 18,93 ft / 5,77 m, 18,93 ft / 5,77 m
- Average freeboard: 20,56 ft / 6,27 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 66,7 %
- Above water (accommodation/working, high = better): 149,4 %
Waterplane Area: 54 532 Square feet or 5 066 Square metres
Displacement factor (Displacement / loading): 113 %
Structure weight / hull surface area: 232 lbs/sq ft or 1 131 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,96
- Longitudinal: 1,47
- Overall: 1,00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

AD
396t for 1930 Fire Control
25t for Marconi
20t Hulesmayer
OD
25t for nighfighting
55t for Cata+2seaplanes
120t reserved...
AW
170t for additionnal ventilation
BW
170t additionnal pumps

Kaiser Kirk · March 14, 2025, 01:41:22 PM

It's why I do the additional step of determining deck heights, it lets me know what belt I likely need.
Figuring the default 2.44mm, then the main deck is 2.41m, and that belt covers to -0.29m.
I believe cruisers in this era tended to have more like 1m below WL or more.

Now light shells like cruisers can't dive deep, but at 30 knots the wave period along the side is almost
certainly going to be exposing below that belt at times. Add in consideration of roll side to side, and hits between the wave trough and belt are certainly possible.

Speedwise, the Byzantines and Parthians are in this weird 'slow' zone. I have a lot of 30 knot cruisers that can at least maintain distance on, but I have few 31 or 32 knot cruisers.

My version of this type of ship is the new Boran class, also 30 knots, for the same general reasons.
I chose to go bigger with a higher belt and bigger guns.

Personally I think a Wilno-Byzantine war would be a fascinating contrast of styles.

Jefgte · March 14, 2025, 05:38:35 PM

Before 1930, I used the German Derfflinger armor layout.
Before 1930, the armor deck was placed on the lower can of the belt.
Approximately 1/3 of the belt was submerged.

After 1930, the armor deck was placed on the upper can of the belt (because bombers).
Approximately 1/3 of the belt was submerged.

The Rock Doctor · March 14, 2025, 07:33:35 PM

*Clobbers Byzantines with navalized frying pan*

Jefgte · Reply #41 - Re: Byzantine Empire 1936 - 1937

Quote*Clobbers Byzantines with navalized frying pan*

These are the 114DP and 133DP turrets which are frying pans.

Jefgte · Reply #42 - Re: Byzantine Empire 1936 - 1937

Replacement of old 500t patrol boats.
=> 27 kts TGB which would work with 27 kts colonial Frigates and Cruisers.

TGB500D, Byzantine Empire TGB500 laid down 1937

Displacement:
500 t light; 529 t standard; 565 t normal; 593 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(245,20 ft / 242,78 ft) x 24,05 ft x (8,46 / 8,74 ft)
(74,74 m / 74,00 m) x 7,33 m x (2,58 / 2,66 m)

Armament:
2 - 4,00" / 102 mm 45,0 cal guns - 33,00lbs / 14,97kg shells, 240 per gun
Dual purpose guns in deck mounts, 1937 Model
2 x Single mounts on centreline ends, evenly spread
4 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 800 per gun
Anti-air guns in deck mounts, 1937 Model
2 x 2-gun mounts on centreline ends, evenly spread
2 raised mounts
4 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 3 500 per gun
Machine guns in deck mounts, 1937 Model
2 x 2-gun mounts on sides, forward deck centre
2 raised mounts
Weight of broadside 74 lbs / 34 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, 10 020 shp / 7 475 Kw = 27,00 kts
Range 4 000nm at 10,00 kts
Bunker at max displacement = 64 tons

Complement:
57 - 75

Cost:
£0,312 million / $1,246 million

Distribution of weights at normal displacement:
Armament: 14 tons, 2,5 %
- Guns: 14 tons, 2,5 %
Armour: 3 tons, 0,5 %
- Armament: 3 tons, 0,5 %
Machinery: 257 tons, 45,5 %
Hull, fittings & equipment: 202 tons, 35,8 %
Fuel, ammunition & stores: 64 tons, 11,4 %
Miscellaneous weights: 24 tons, 4,2 %
- On freeboard deck: 23 tons
- Above deck: 1 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
267 lbs / 121 Kg = 8,3 x 4,0 " / 102 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 1,13
Metacentric height 0,7 ft / 0,2 m
Roll period: 11,7 seconds
Steadiness - As gun platform (Average = 50 %): 72 %
- Recoil effect (Restricted arc if above 1.00): 0,25
Seaboat quality (Average = 1.00): 1,20

Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0,400 / 0,407
Length to Beam Ratio: 10,10 : 1
'Natural speed' for length: 15,58 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 60
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 %, 17,22 ft / 5,25 m, 13,29 ft / 4,05 m
- Forward deck: 33,00 %, 13,29 ft / 4,05 m, 9,68 ft / 2,95 m
- Aft deck: 33,00 %, 9,68 ft / 2,95 m, 9,02 ft / 2,75 m
- Quarter deck: 16,00 %, 9,02 ft / 2,75 m, 9,02 ft / 2,75 m
- Average freeboard: 10,99 ft / 3,35 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 155,8 %
- Above water (accommodation/working, high = better): 125,1 %
Waterplane Area: 3 594 Square feet or 334 Square metres
Displacement factor (Displacement / loading): 92 %
Structure weight / hull surface area: 28 lbs/sq ft or 139 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,64
- Longitudinal: 2,99
- Overall: 0,75
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

AD
1t for 1930 fire control
OD
9t for 1x3TTx533
10t for sonar
3t for 15x191kg DC
AW
engines ventillation

1680nm@15kts
840nm@20kts
440nm@25kts
280nm@27kts

The Rock Doctor · Reply #43 - Re: Byzantine Empire 1936 - 1937

I feel I'd want a few more depth charges aboard, but otherwise it's a handy-looking unit.