Byzantine Empire - 1910

Jefgte · April 17, 2017, 04:39:17 PM

AC3, Byzantine Empire AC3 laid down 1904

Displacement:
   14 630 t light; 15 344 t standard; 16 524 t normal; 17 468 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (574,00 ft / 574,00 ft) x 76,00 ft x (21,04 / 22,05 ft)
   (174,96 m / 174,96 m) x 23,16 m x (6,41 / 6,72 m)

Armament:
6 - 12,00" / 305 mm 45,0 cal guns - 871,38lbs / 395,25kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     3 x Twin mounts on centreline ends, majority forward
8 - 6,00" / 152 mm 45,0 cal guns - 108,93lbs / 49,41kg shells, 138 per gun
     Breech loading guns in casemate mounts, 1904 Model
     8 x Single mounts on sides, evenly spread
8 - 4,00" / 102 mm 45,0 cal guns - 32,28lbs / 14,64kg shells, 180 per gun
     Quick firing guns in deck mounts, 1904 Model
     8 x Single mounts on side ends, evenly spread
4 - 0,30" / 7,7 mm 70,0 cal guns - 0,02lbs / 0,01kg shells, 2 000 per gun
     Machine guns in deck mounts, 1904 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
Weight of broadside 6 358 lbs / 2 884 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7,10" / 180 mm   462,00 ft / 140,82 m   7,00 ft / 2,13 m
   Ends:   1,97" / 50 mm   112,00 ft / 34,14 m   5,00 ft / 1,52 m
   Upper:   3,55" / 90 mm   462,00 ft / 140,82 m   10,00 ft / 3,05 m
     Main Belt covers 124 % of normal length

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7,88" / 200 mm   2,97" / 75 mm      5,90" / 150 mm
   2nd:   3,55" / 90 mm   1,97" / 50 mm      1,97" / 50 mm
   4th:   0,80" / 20 mm     -           -
   5th:   0,50" / 13 mm     -           -

- Armoured deck - single deck:
   For and Aft decks: 1,58" / 40 mm
   Forecastle: 1,00" / 25 mm Quarter deck: 1,00" / 25 mm

- Conning towers: Forward 7,10" / 180 mm, Aft 3,55" / 90 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 48 000 shp / 35 808 Kw = 25,00 kts
   Range 5 000nm at 10,00 kts
   Bunker at max displacement = 2 124 tons (90% coal)

Complement:
   728 - 947

Cost:
   £1,719 million / $6,877 million

Distribution of weights at normal displacement:
   Armament: 1 106 tons, 6,7 %
     - Guns: 1 106 tons, 6,7 %
   Armour: 3 263 tons, 19,7 %
     - Belts: 1 657 tons, 10,0 %
     - Armament: 560 tons, 3,4 %
     - Armour Deck: 897 tons, 5,4 %
     - Conning Towers: 149 tons, 0,9 %
   Machinery: 4 752 tons, 28,8 %
   Hull, fittings & equipment: 5 290 tons, 32,0 %
   Fuel, ammunition & stores: 1 894 tons, 11,5 %
   Miscellaneous weights: 219 tons, 1,3 %
     - Hull below water: 12 tons
     - Hull above water: 72 tons
     - Above deck: 135 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     11 098 lbs / 5 034 Kg = 12,8 x 12,0 " / 305 mm shells or 1,5 torpedoes
   Stability (Unstable if below 1.00): 1,27
   Metacentric height 5,1 ft / 1,5 m
   Roll period: 14,2 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 ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,630 / 0,636
   Length to Beam Ratio: 7,55 : 1
   'Natural speed' for length: 23,96 kts
   Power going to wave formation at top speed: 51 %
   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:   20,00 %, 17,00 ft / 5,18 m, 15,00 ft / 4,57 m
     - Forward deck:   33,00 %, 15,00 ft / 4,57 m, 14,50 ft / 4,42 m
     - Aft deck:   31,00 %, 14,50 ft / 4,42 m, 14,50 ft / 4,42 m
     - Quarter deck:   16,00 %, 14,50 ft / 4,42 m, 14,50 ft / 4,42 m
     - Average freeboard:      14,84 ft / 4,52 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 123,5 %
      - Above water (accommodation/working, high = better): 125,6 %
   Waterplane Area: 32 809 Square feet or 3 048 Square metres
   Displacement factor (Displacement / loading): 91 %
   Structure weight / hull surface area: 132 lbs/sq ft or 643 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1,03
      - Longitudinal: 0,99
      - Overall: 1,00
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Misc weight:
12t => 3 TT x 450 with 3 reloads
72t => 36t for extra pump installation & 36t for extra air ventilation
135t => 125t for fire control & 10t for short Marconi

Jefgte · April 20, 2017, 05:17:48 PM

From North to South	Slips-Docks	cost

Sebastopol	225	2,25
	175	1,75
	125	1,25
	50	0,5
Odessa	175	1,25
	75	0,75
	75	0,75
Varna	75	0,75
	75	0,75
	50	0,5
Byzance	275	2,75
	275	2,75
	175	1,75
	125	1,25
	75	0,75
	75	0,75
Izmir	125	1,25
	125	1,25
	50	0,5
	50	0,5
Athenes	225	2,25
	225	2,25
	175	1,75
	125	1,25
	125	1,25
	75	0,75
	50	0,5
Alexandrie	175	1,75
	125	1,25
	125	1,25
	50	0,5
	50	0,5
Haifa	125	1,25
	125	1,25
	75	0,75
	50	0,5
	50	0,5
Ismailia	125	1,25
	75	0,75
	50	0,5
Eilat	75	0,75
	50	0,5
	50	0,5
Yambu	50	0,5
	50	0,5
Massawa	75	0,75
	50	0,5
	TOTAL	50

Slips-Docks	Qty

275m	2
225m	3
175m	5
125m	10
75m	11
50m	15

Walter · April 21, 2017, 11:03:48 AM

So... which ones are slips and which ones are docks?

Jefgte · April 21, 2017, 04:10:57 PM

Slips & Docks are not defined for the moment. Quantity could be changed too.

:)

Jefgte · April 28, 2017, 05:06:19 PM

AC4, Byzantine Empire AC4 laid down 1908

Displacement:
   15 250 t light; 16 017 t standard; 17 126 t normal; 18 014 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (574,00 ft / 574,00 ft) x 77,00 ft x (25,59 / 26,62 ft)
   (174,96 m / 174,96 m) x 23,47 m x (7,80 / 8,11 m)

Armament:
6 - 12,00" / 305 mm 45,0 cal guns - 871,38lbs / 395,25kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1908 Model
     3 x Twin mounts on centreline ends, majority forward
10 - 6,00" / 152 mm 45,0 cal guns - 108,93lbs / 49,41kg shells, 150 per gun
     Breech loading guns in casemate mounts, 1908 Model
     10 x Single mounts on sides, evenly spread
12 - 4,00" / 102 mm 45,0 cal guns - 32,28lbs / 14,64kg shells, 200 per gun
     Quick firing guns in deck mounts, 1908 Model
     12 x Single mounts on side ends, evenly spread
4 - 0,30" / 7,7 mm 70,0 cal guns - 0,02lbs / 0,01kg shells, 2 000 per gun
     Machine guns in deck mounts, 1908 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
Weight of broadside 6 705 lbs / 3 041 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   8,87" / 225 mm   400,00 ft / 121,92 m   10,00 ft / 3,05 m
   Ends:   2,97" / 75 mm   174,00 ft / 53,04 m   8,00 ft / 2,44 m
   Upper:   4,72" / 120 mm   400,00 ft / 121,92 m   10,00 ft / 3,05 m
     Main Belt covers 107 % of normal length

- Torpedo Bulkhead - Strengthened structural bulkheads:
      1,37" / 35 mm   400,00 ft / 121,92 m   24,00 ft / 7,32 m
   Beam between torpedo bulkheads 67,00 ft / 20,42 m

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9,85" / 250 mm   4,72" / 120 mm      8,87" / 225 mm
   2nd:   1,97" / 50 mm   1,97" / 50 mm      1,97" / 50 mm
   4th:   0,80" / 20 mm     -           -
   5th:   0,50" / 13 mm     -           -

- Armoured deck - single deck:
   For and Aft decks: 2,55" / 65 mm
   Forecastle: 1,37" / 35 mm Quarter deck: 1,37" / 35 mm

- Conning towers: Forward 9,85" / 250 mm, Aft 4,72" / 120 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 60 000 shp / 44 760 Kw = 26,63 kts
   Range 6 000nm at 10,00 kts
   Bunker at max displacement = 1 997 tons (90% coal)

Complement:
   748 - 973

Cost:
   £1,554 million / $6,216 million

Distribution of weights at normal displacement:
   Armament: 1 161 tons, 6,8 %
     - Guns: 1 161 tons, 6,8 %
   Armour: 5 362 tons, 31,3 %
     - Belts: 2 430 tons, 14,2 %
     - Torpedo bulkhead: 487 tons, 2,8 %
     - Armament: 952 tons, 5,6 %
     - Armour Deck: 1 286 tons, 7,5 %
     - Conning Towers: 209 tons, 1,2 %
   Machinery: 3 300 tons, 19,3 %
   Hull, fittings & equipment: 5 184 tons, 30,3 %
   Fuel, ammunition & stores: 1 876 tons, 11,0 %
   Miscellaneous weights: 242 tons, 1,4 %
     - Hull below water: 12 tons
     - Hull above water: 80 tons
     - Above deck: 150 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     18 621 lbs / 8 447 Kg = 21,6 x 12,0 " / 305 mm shells or 2,8 torpedoes
   Stability (Unstable if below 1.00): 1,15
   Metacentric height 4,4 ft / 1,3 m
   Roll period: 15,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,59
   Seaboat quality (Average = 1.00): 1,17

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,530 / 0,536
   Length to Beam Ratio: 7,45 : 1
   'Natural speed' for length: 23,96 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   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:   20,00 %, 23,00 ft / 7,01 m, 19,85 ft / 6,05 m
     - Forward deck:   33,00 %, 19,85 ft / 6,05 m, 17,00 ft / 5,18 m
     - Aft deck:   27,00 %, 17,00 ft / 5,18 m, 17,00 ft / 5,18 m
     - Quarter deck:   20,00 %, 17,00 ft / 5,18 m, 17,00 ft / 5,18 m
     - Average freeboard:      18,29 ft / 5,58 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 107,2 %
      - Above water (accommodation/working, high = better): 137,1 %
   Waterplane Area: 30 274 Square feet or 2 813 Square metres
   Displacement factor (Displacement / loading): 98 %
   Structure weight / hull surface area: 139 lbs/sq ft or 677 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,47
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Misc weight:
12t => 3 TT x 450 with 3 reloads
80t => 40t for extra pump installation & 40t for extra air ventilation
125t => 125t for fire contro
25t for long range Marconi

Kaiser Kirk · May 05, 2017, 10:34:17 AM

I've been busy, so I don't drop by to comment much, but
I really dislike these AC designs.

First, the 6 main guns is a little light for what they thought they would be needing for fire control. You do see it later with the 6x15" English BCs, but they were criticized on those grounds.
In this period the idea is to have sufficient rate of fire to spot the fall of shot and so accurately range your guns. As rangefinders became better and longer based, and as turret & feed designs improved this was less needed.

Second, while you have the same beam as the Invincible 23.47m is a little narrow for 305mm guns AND a TDS. You can see that with the TDS system you have. With a 20m beam between bulkheads, that means your TDS system has a depth of 1.5m per side, which is not useful. But more to the point- you shouldn't have that 1.5m room to start with....with the same main battery and beam, the Brits didn't fit a full TDS in, which means you won't have room to do so unless you expand the beam. While the Invincible has wing turrets and you do not, those wing turrets actually had extensive supporting structures below them which doesn't show in SS.

Third, you combine a minimum overall beam- 23.47m, and then you have very low, cruiser like, BC of 0.53. That not only complicates the concept of a TDS, by meaning there is even less beam where the turrets are, but also suggests the turrets wouldn't fit.

Fourth, the [/i]Invinvible[/i] class was not robustly built in the first place, so weakly built the bottom distorted when drydocked..... and your design is a little leaner, and so even weaker.

Last, you probably want the 6" to be QF.

Depending on what your revised design looks like, I may have to revisit my 1908 ACR.

Jefgte · May 05, 2017, 04:59:20 PM

AC3 & AC4 had not the Battle Cruiser concept (Invincible), they had just bigger guns than AC2 & higher speed (turbines )

AC1	8700t	2	60%-1895	10,44	124,97x18,9x6,51	10x191+8x76+3TTx450	B152-51-T102-D32	21kts	4500nm-10kts
AC2	13740	2	75%-1900	20,61	162,15x23,16x6,36	3T2x234+8x152+8x76,2+4TTx450	B130-90-T140-D32	24kts	4500nm-10kts
AC3	14630t	2	90%-1904	26,3	175x23,1x6,24	3T2x305+8x152+8x76,2+4TTx450	B180-90-T200-D45	25kts	5000nm-10kts
AC4	15250t	2	100%-1908	30,5	175x23,5x7,8	3T2x305+10x152+12x102+4TTx450	B225-75-T260-D65-bkh35	26,6kts	6000nm-10kts

Note that BB had 13"5 guns & ACs 9"2 & 12"
Armor increase because I suppose that other countries use biger guns for ACs

Jefgte · May 06, 2017, 03:47:42 PM

I rework AC4
...speed down to 26kts

Jefgte · May 06, 2017, 04:31:17 PM

15250t to 14800t for AC4

AC4, Byzantine Empire AC4 laid down 1908

Displacement:
   14 800 t light; 15 558 t standard; 16 650 t normal; 17 523 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (574,00 ft / 574,00 ft) x 77,00 ft x (24,88 / 25,89 ft)
   (174,96 m / 174,96 m) x 23,47 m x (7,58 / 7,89 m)

Armament:
6 - 12,00" / 305 mm 45,0 cal guns - 871,38lbs / 395,25kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1908 Model
     3 x Twin mounts on centreline ends, majority forward
10 - 6,00" / 152 mm 45,0 cal guns - 108,93lbs / 49,41kg shells, 150 per gun
     Breech loading guns in casemate mounts, 1908 Model
     10 x Single mounts on sides, evenly spread
12 - 4,00" / 102 mm 45,0 cal guns - 32,28lbs / 14,64kg shells, 200 per gun
     Quick firing guns in deck mounts, 1908 Model
     12 x Single mounts on side ends, evenly spread
4 - 0,30" / 7,7 mm 70,0 cal guns - 0,02lbs / 0,01kg shells, 2 000 per gun
     Machine guns in deck mounts, 1908 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
Weight of broadside 6 705 lbs / 3 041 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   8,87" / 225 mm   386,00 ft / 117,65 m   10,00 ft / 3,05 m
   Ends:   2,97" / 75 mm   188,00 ft / 57,30 m   8,00 ft / 2,44 m
   Upper:   4,72" / 120 mm   386,00 ft / 117,65 m   10,00 ft / 3,05 m
     Main Belt covers 103 % of normal length

- Torpedo Bulkhead - Strengthened structural bulkheads:
      1,37" / 35 mm   386,00 ft / 117,65 m   24,00 ft / 7,32 m
   Beam between torpedo bulkheads 67,00 ft / 20,42 m

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9,85" / 250 mm   4,72" / 120 mm      8,87" / 225 mm
   2nd:   1,97" / 50 mm   1,97" / 50 mm      1,97" / 50 mm
   4th:   0,80" / 20 mm     -           -
   5th:   0,50" / 13 mm     -           -

- Armoured deck - single deck:
   For and Aft decks: 2,55" / 65 mm
   Forecastle: 1,37" / 35 mm Quarter deck: 1,37" / 35 mm

- Conning towers: Forward 9,85" / 250 mm, Aft 4,72" / 120 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 54 000 shp / 40 284 Kw = 26,04 kts
   Range 6 000nm at 10,00 kts
   Bunker at max displacement = 1 966 tons (90% coal)

Complement:
   732 - 952

Cost:
   £1,492 million / $5,969 million

Distribution of weights at normal displacement:
   Armament: 1 161 tons, 7,0 %
     - Guns: 1 161 tons, 7,0 %
   Armour: 5 279 tons, 31,7 %
     - Belts: 2 379 tons, 14,3 %
     - Torpedo bulkhead: 470 tons, 2,8 %
     - Armament: 941 tons, 5,6 %
     - Armour Deck: 1 286 tons, 7,7 %
     - Conning Towers: 205 tons, 1,2 %
   Machinery: 2 970 tons, 17,8 %
   Hull, fittings & equipment: 5 148 tons, 30,9 %
   Fuel, ammunition & stores: 1 849 tons, 11,1 %
   Miscellaneous weights: 242 tons, 1,5 %
     - Hull below water: 12 tons
     - Hull above water: 80 tons
     - Above deck: 150 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     19 180 lbs / 8 700 Kg = 22,2 x 12,0 " / 305 mm shells or 3,0 torpedoes
   Stability (Unstable if below 1.00): 1,17
   Metacentric height 4,5 ft / 1,4 m
   Roll period: 15,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,58
   Seaboat quality (Average = 1.00): 1,21

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,530 / 0,536
   Length to Beam Ratio: 7,45 : 1
   'Natural speed' for length: 23,96 kts
   Power going to wave formation at top speed: 51 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   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:   20,00 %, 23,00 ft / 7,01 m, 19,50 ft / 5,94 m
     - Forward deck:   33,00 %, 19,50 ft / 5,94 m, 16,70 ft / 5,09 m
     - Aft deck:   27,00 %, 16,70 ft / 5,09 m, 16,70 ft / 5,09 m
     - Quarter deck:   20,00 %, 16,70 ft / 5,09 m, 16,70 ft / 5,09 m
     - Average freeboard:      18,00 ft / 5,49 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 102,9 %
      - Above water (accommodation/working, high = better): 137,6 %
   Waterplane Area: 30 274 Square feet or 2 813 Square metres
   Displacement factor (Displacement / loading): 99 %
   Structure weight / hull surface area: 139 lbs/sq ft or 678 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,96
      - Longitudinal: 1,44
      - Overall: 1,00
   Adequate 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

Misc weight:
12t => 3 TT x 450 with 3 reloads
80t => 40t for extra pump installation & 40t for extra air ventilation
125t => 125t for fire control
25t for long range Marconi

Kaiser Kirk · May 14, 2017, 12:40:14 PM

Quote from: Jefgte on May 05, 2017, 04:59:20 PM
AC3 & AC4 had not the Battle Cruiser concept (Invincible), they had just bigger guns than AC2 & higher speed (turbines )

Note that BB had 13"5 guns & ACs 9"2 & 12"
Armor increase because I suppose that other countries use bigger guns for ACs

My objection was not in regards to the concept or the armor, but the combination of elements being crammed into a long narrow hull - there just wasn't room.
Further, as an informative measure, the use of 6x main gun is dubious. At the time, with early fire control, they wanted 4 and 5 gun salvos to ensure adequate barrels ready each salvo to help spotting. While 6 guns could fire in 3 gun salvos, you would be counting on the loading and ramming to go on schedule, which means some times you would delay firing or use just 2 barrels, which was not as useful. While the Renown class did field 6 guns, that was several stages of fire control later, and they were criticized on that basis.

However, your most recent post of AC4 has the same problems.
It uses Invincible's beam for 12" guns - which is acceptable, though subject to fire control problems.
However it has a 0.53 BC, which is cruiser like, and likely too narrow.
Considering the original vessel was weakly built, slimming it down seems ill advised.
Further, the original ship didn't have room for a full torpedo bulkhead,
yet you're cramming one in- which shouldn't fit.

As for armor thickness/gun size my designs were put out when I had time (I've been busy the past month+) and so aren't scaled to any other player's design. My ACs have 240mm and 255mm guns, and are armored to defeat 150-255mm guns at the expected combat ranges. Your armor is sufficient against those, though I have no clue what the Romans are building.

My closest parallel is my 1908 armored cruiser, which is slightly smaller, slightly slower, with less belt armor, more deck armor (65mm to stop all splinters) and 8x 255mm guns. Since I'm laying that down after your 1904 ships are in service, I might revise it to better match up. However, my design isn't terribly mismatched as it is.

Your 1904 vessels would have a very narrow immunity zone when my ships are laid down in 1908. Meanwhile your guns would have a great deal of problems defeating both my belt and the 65mm protective deck behind it. The small immunity zone would vanish in 1911 with capped shells, probably allowing both of us to defeat each other's belts. At that point, I think my superior volume of fire and a continued immunity to deck penetration might tip the balance back in my favor.

Jefgte · May 14, 2017, 04:46:54 PM

AC3, Byzantine Empire AC3 laid down 1904

Displacement:
   14 000 t light; 14 706 t standard; 15 853 t normal; 16 771 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (570,00 ft / 570,00 ft) x 77,50 ft x (20,93 / 21,93 ft)
   (173,74 m / 173,74 m) x 23,62 m x (6,38 / 6,68 m)

Armament:
6 - 11,03" / 280 mm 45,0 cal guns - 676,68lbs / 306,94kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     3 x Twin mounts on centreline ends, majority forward
8 - 7,50" / 191 mm 45,0 cal guns - 212,74lbs / 96,50kg shells, 138 per gun
     Breech loading guns in casemate mounts, 1904 Model
     8 x Single mounts on sides, evenly spread
10 - 4,00" / 102 mm 45,0 cal guns - 32,28lbs / 14,64kg shells, 180 per gun
     Quick firing guns in deck mounts, 1904 Model
     10 x Single mounts on sides, evenly spread
4 - 0,30" / 7,7 mm 70,0 cal guns - 0,02lbs / 0,01kg shells, 2 000 per gun
     Machine guns in deck mounts, 1904 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
Weight of broadside 6 085 lbs / 2 760 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7,88" / 200 mm   410,00 ft / 124,97 m   9,00 ft / 2,74 m
   Ends:   1,97" / 50 mm   160,00 ft / 48,77 m   5,00 ft / 1,52 m
   Upper:   3,55" / 90 mm   410,00 ft / 124,97 m   9,00 ft / 2,74 m
     Main Belt covers 111 % of normal length

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9,45" / 240 mm   2,97" / 75 mm      7,88" / 200 mm
   2nd:   3,55" / 90 mm   1,98" / 50 mm      1,98" / 50 mm
   4th:   0,80" / 20 mm     -           -
   5th:   0,50" / 13 mm     -           -

- Armoured deck - single deck:
   For and Aft decks: 1,98" / 50 mm
   Forecastle: 1,00" / 25 mm Quarter deck: 1,00" / 25 mm

- Conning towers: Forward 7,88" / 200 mm, Aft 3,55" / 90 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 40 000 shp / 29 840 Kw = 24,05 kts
   Range 5 000nm at 10,00 kts
   Bunker at max displacement = 2 065 tons (90% coal)

Complement:
   706 - 918

Cost:
   £1,519 million / $6,077 million

Distribution of weights at normal displacement:
   Armament: 1 044 tons, 6,6 %
     - Guns: 1 044 tons, 6,6 %
   Armour: 3 739 tons, 23,6 %
     - Belts: 1 829 tons, 11,5 %
     - Armament: 677 tons, 4,3 %
     - Armour Deck: 1 078 tons, 6,8 %
     - Conning Towers: 155 tons, 1,0 %
   Machinery: 3 960 tons, 25,0 %
   Hull, fittings & equipment: 5 040 tons, 31,8 %
   Fuel, ammunition & stores: 1 853 tons, 11,7 %
   Miscellaneous weights: 217 tons, 1,4 %
     - Hull below water: 12 tons
     - Hull above water: 70 tons
     - Above deck: 135 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     14 589 lbs / 6 618 Kg = 21,7 x 11,0 " / 280 mm shells or 1,8 torpedoes
   Stability (Unstable if below 1.00): 1,34
   Metacentric height 5,8 ft / 1,8 m
   Roll period: 13,6 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0,39
   Seaboat quality (Average = 1.00): 1,20

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,600 / 0,606
   Length to Beam Ratio: 7,35 : 1
   'Natural speed' for length: 23,87 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   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:   20,00 %, 18,00 ft / 5,49 m, 16,50 ft / 5,03 m
     - Forward deck:   33,00 %, 16,50 ft / 5,03 m, 15,00 ft / 4,57 m
     - Aft deck:   31,00 %, 15,00 ft / 4,57 m, 15,00 ft / 4,57 m
     - Quarter deck:   16,00 %, 15,00 ft / 4,57 m, 15,00 ft / 4,57 m
     - Average freeboard:      15,67 ft / 4,78 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 109,3 %
      - Above water (accommodation/working, high = better): 134,1 %
   Waterplane Area: 32 309 Square feet or 3 002 Square metres
   Displacement factor (Displacement / loading): 97 %
   Structure weight / hull surface area: 128 lbs/sq ft or 623 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1,00
      - Longitudinal: 1,05
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Misc weight:
12t => 3 TT x 450 with 3 reloads
70t => 35t for extra pump installation & 35t for extra air ventilation
135t => 125t for fire control & 10t for short Marconi

Jefgte · May 15, 2017, 04:47:31 PM

AC2 class had 3T2x234+8x152
AC3 could be a kind of Blucher

AC3, Byzantine Empire AC3 laid down 1904

Displacement:
   14 885 t light; 15 615 t standard; 16 795 t normal; 17 738 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (574,00 ft / 574,00 ft) x 79,00 ft x (22,54 / 23,56 ft)
   (174,96 m / 174,96 m) x 24,08 m x (6,87 / 7,18 m)

Armament:
4 - 9,20" / 234 mm 45,0 cal guns - 392,66lbs / 178,11kg shells, 144 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     2 x Twin mounts on centreline ends, evenly spread
8 - 9,20" / 234 mm 45,0 cal guns - 392,66lbs / 178,11kg shells, 140 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     4 x Twin mounts on sides, evenly spread
8 - 4,00" / 102 mm 45,0 cal guns - 32,28lbs / 14,64kg shells, 180 per gun
     Quick firing guns in deck mounts, 1904 Model
     8 x Single mounts on side ends, evenly spread
4 - 0,30" / 7,7 mm 70,0 cal guns - 0,02lbs / 0,01kg shells, 2 000 per gun
     Machine guns in deck mounts, 1904 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
Weight of broadside 4 970 lbs / 2 254 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7,88" / 200 mm   438,00 ft / 133,50 m   9,00 ft / 2,74 m
   Ends:   1,97" / 50 mm   136,00 ft / 41,45 m   5,00 ft / 1,52 m
   Upper:   3,55" / 90 mm   438,00 ft / 133,50 m   9,00 ft / 2,74 m
     Main Belt covers 117 % of normal length

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7,88" / 200 mm   2,97" / 75 mm      5,90" / 150 mm
   2nd:   5,90" / 150 mm   1,97" / 50 mm      5,90" / 150 mm
   4th:   0,80" / 20 mm     -           -
   5th:   0,50" / 13 mm     -           -

- Armoured deck - single deck:
   For and Aft decks: 1,78" / 45 mm
   Forecastle: 1,00" / 25 mm Quarter deck: 1,00" / 25 mm

- Conning towers: Forward 7,88" / 200 mm, Aft 3,55" / 90 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 48 000 shp / 35 808 Kw = 25,07 kts
   Range 5 000nm at 10,00 kts
   Bunker at max displacement = 2 123 tons (90% coal)

Complement:
   736 - 958

Cost:
   £1,640 million / $6,559 million

Distribution of weights at normal displacement:
   Armament: 1 096 tons, 6,5 %
     - Guns: 1 096 tons, 6,5 %
   Armour: 3 762 tons, 22,4 %
     - Belts: 1 916 tons, 11,4 %
     - Armament: 701 tons, 4,2 %
     - Armour Deck: 984 tons, 5,9 %
     - Conning Towers: 161 tons, 1,0 %
   Machinery: 4 752 tons, 28,3 %
   Hull, fittings & equipment: 5 056 tons, 30,1 %
   Fuel, ammunition & stores: 1 911 tons, 11,4 %
   Miscellaneous weights: 217 tons, 1,3 %
     - Hull below water: 12 tons
     - Hull above water: 70 tons
     - Above deck: 135 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     12 561 lbs / 5 698 Kg = 32,3 x 9,2 " / 234 mm shells or 1,6 torpedoes
   Stability (Unstable if below 1.00): 1,26
   Metacentric height 5,4 ft / 1,6 m
   Roll period: 14,3 seconds
   Steadiness   - As gun platform (Average = 50 %): 74 %
         - Recoil effect (Restricted arc if above 1.00): 0,35
   Seaboat quality (Average = 1.00): 1,12

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,575 / 0,581
   Length to Beam Ratio: 7,27 : 1
   'Natural speed' for length: 23,96 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 66
   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:   20,00 %, 18,00 ft / 5,49 m, 16,00 ft / 4,88 m
     - Forward deck:   33,00 %, 16,00 ft / 4,88 m, 15,00 ft / 4,57 m
     - Aft deck:   31,00 %, 15,00 ft / 4,57 m, 15,00 ft / 4,57 m
     - Quarter deck:   16,00 %, 15,00 ft / 4,57 m, 15,00 ft / 4,57 m
     - Average freeboard:      15,53 ft / 4,73 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 117,4 %
      - Above water (accommodation/working, high = better): 127,9 %
   Waterplane Area: 32 398 Square feet or 3 010 Square metres
   Displacement factor (Displacement / loading): 94 %
   Structure weight / hull surface area: 128 lbs/sq ft or 624 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,99
      - Longitudinal: 1,06
      - Overall: 1,00
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Misc weight:
12t => 3 TT x 450 with 3 reloads
70t => 35t for extra pump installation & 35t for extra air ventilation
135t => 125t for fire control & 10t for short Marconi

Jefgte · May 16, 2017, 04:28:12 PM

AC3, Byzantine Empire AC3 laid down 1904

Displacement:
   14 360 t light; 15 017 t standard; 16 170 t normal; 17 093 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (574,00 ft / 574,00 ft) x 77,00 ft x (22,27 / 23,29 ft)
   (174,96 m / 174,96 m) x 23,47 m x (6,79 / 7,10 m)

Armament:
6 - 9,20" / 234 mm 45,0 cal guns - 392,67lbs / 178,11kg shells, 142 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     3 x Twin mounts on centreline ends, majority forward
4 - 9,20" / 234 mm 45,0 cal guns - 392,67lbs / 178,11kg shells, 140 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     2 x Twin mounts on sides, aft deck forward
8 - 4,00" / 102 mm 45,0 cal guns - 32,28lbs / 14,64kg shells, 180 per gun
     Quick firing guns in deck mounts, 1904 Model
     8 x Single mounts on side ends, evenly spread
4 - 0,30" / 7,7 mm 70,0 cal guns - 0,02lbs / 0,01kg shells, 2 000 per gun
     Machine guns in deck mounts, 1904 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
Weight of broadside 4 185 lbs / 1 898 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7,88" / 200 mm   435,00 ft / 132,59 m   9,00 ft / 2,74 m
   Ends:   1,97" / 50 mm   139,00 ft / 42,37 m   5,00 ft / 1,52 m
   Upper:   3,55" / 90 mm   435,00 ft / 132,59 m   9,00 ft / 2,74 m
     Main Belt covers 117 % of normal length

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7,88" / 200 mm   2,97" / 75 mm      5,90" / 150 mm
   2nd:   5,90" / 150 mm   1,97" / 50 mm      5,90" / 150 mm
   4th:   0,80" / 20 mm     -           -
   5th:   0,50" / 13 mm     -           -

- Armoured deck - single deck:
   For and Aft decks: 1,97" / 50 mm
   Forecastle: 1,00" / 25 mm Quarter deck: 1,00" / 25 mm

- Conning towers: Forward 7,88" / 200 mm, Aft 3,55" / 90 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 47 000 shp / 35 062 Kw = 25,10 kts
   Range 5 000nm at 10,00 kts
   Bunker at max displacement = 2 076 tons (90% coal)

Complement:
   716 - 932

Cost:
   £1,534 million / $6,137 million

Distribution of weights at normal displacement:
   Armament: 921 tons, 5,7 %
     - Guns: 921 tons, 5,7 %
   Armour: 3 713 tons, 23,0 %
     - Belts: 1 902 tons, 11,8 %
     - Armament: 605 tons, 3,7 %
     - Armour Deck: 1 049 tons, 6,5 %
     - Conning Towers: 157 tons, 1,0 %
   Machinery: 4 653 tons, 28,8 %
   Hull, fittings & equipment: 4 855 tons, 30,0 %
   Fuel, ammunition & stores: 1 811 tons, 11,2 %
   Miscellaneous weights: 217 tons, 1,3 %
     - Hull below water: 12 tons
     - Hull above water: 70 tons
     - Above deck: 135 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     12 527 lbs / 5 682 Kg = 32,2 x 9,2 " / 234 mm shells or 1,6 torpedoes
   Stability (Unstable if below 1.00): 1,27
   Metacentric height 5,2 ft / 1,6 m
   Roll period: 14,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 76 %
         - Recoil effect (Restricted arc if above 1.00): 0,33
   Seaboat quality (Average = 1.00): 1,15

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,575 / 0,581
   Length to Beam Ratio: 7,45 : 1
   'Natural speed' for length: 23,96 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 66
   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:   20,00 %, 18,00 ft / 5,49 m, 16,00 ft / 4,88 m
     - Forward deck:   33,00 %, 16,00 ft / 4,88 m, 15,00 ft / 4,57 m
     - Aft deck:   31,00 %, 15,00 ft / 4,57 m, 15,00 ft / 4,57 m
     - Quarter deck:   16,00 %, 15,00 ft / 4,57 m, 15,00 ft / 4,57 m
     - Average freeboard:      15,53 ft / 4,73 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 115,8 %
      - Above water (accommodation/working, high = better): 128,2 %
   Waterplane Area: 31 577 Square feet or 2 934 Square metres
   Displacement factor (Displacement / loading): 96 %
   Structure weight / hull surface area: 124 lbs/sq ft or 603 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,99
      - Longitudinal: 1,05
      - Overall: 1,00
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Misc weight:
12t => 3 TT x 450 with 3 reloads
70t => 35t for extra pump installation & 35t for extra air ventilation
135t => 125t for fire control & 10t for short Marconi

Jefgte · May 17, 2017, 04:21:06 PM

AC3, Byzantine Empire AC3 laid down 1904

Displacement:
   14 700 t light; 15 404 t standard; 16 579 t normal; 17 518 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (570,00 ft / 570,00 ft) x 78,00 ft x (21,75 / 22,76 ft)
   (173,74 m / 173,74 m) x 23,77 m x (6,63 / 6,94 m)

Armament:
6 - 11,03" / 280 mm 45,0 cal guns - 676,68lbs / 306,94kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     3 x Twin mounts on centreline ends, majority forward
12 - 6,00" / 152 mm 45,0 cal guns - 108,93lbs / 49,41kg shells, 150 per gun
     Breech loading guns in casemate mounts, 1904 Model
     12 x Single mounts on sides, evenly spread
12 - 4,00" / 102 mm 45,0 cal guns - 32,28lbs / 14,64kg shells, 180 per gun
     Quick firing guns in deck mounts, 1904 Model
     12 x Single mounts on side ends, evenly spread
4 - 0,30" / 7,7 mm 70,0 cal guns - 0,02lbs / 0,01kg shells, 2 000 per gun
     Machine guns in deck mounts, 1904 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
Weight of broadside 5 755 lbs / 2 610 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7,10" / 180 mm   445,00 ft / 135,64 m   9,00 ft / 2,74 m
   Ends:   1,97" / 50 mm   125,00 ft / 38,10 m   5,00 ft / 1,52 m
   Upper:   3,55" / 90 mm   445,00 ft / 135,64 m   9,00 ft / 2,74 m
     Main Belt covers 120 % of normal length

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7,88" / 200 mm   2,97" / 75 mm      7,10" / 180 mm
   2nd:   2,57" / 65 mm   1,97" / 50 mm      1,97" / 50 mm
   4th:   0,80" / 20 mm     -           -
   5th:   0,50" / 13 mm     -           -

- Armoured deck - single deck:
   For and Aft decks: 1,97" / 50 mm
   Forecastle: 1,00" / 25 mm Quarter deck: 1,00" / 25 mm

- Conning towers: Forward 7,10" / 180 mm, Aft 3,55" / 90 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 48 000 shp / 35 808 Kw = 25,03 kts
   Range 5 000nm at 10,00 kts
   Bunker at max displacement = 2 114 tons (90% coal)

Complement:
   729 - 949

Cost:
   £1,640 million / $6,558 million

Distribution of weights at normal displacement:
   Armament: 1 002 tons, 6,0 %
     - Guns: 1 002 tons, 6,0 %
   Armour: 3 692 tons, 22,3 %
     - Belts: 1 808 tons, 10,9 %
     - Armament: 655 tons, 3,9 %
     - Armour Deck: 1 080 tons, 6,5 %
     - Conning Towers: 149 tons, 0,9 %
   Machinery: 4 752 tons, 28,7 %
   Hull, fittings & equipment: 5 034 tons, 30,4 %
   Fuel, ammunition & stores: 1 879 tons, 11,3 %
   Miscellaneous weights: 219 tons, 1,3 %
     - Hull below water: 12 tons
     - Hull above water: 72 tons
     - Above deck: 135 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     12 410 lbs / 5 629 Kg = 18,5 x 11,0 " / 280 mm shells or 1,6 torpedoes
   Stability (Unstable if below 1.00): 1,32
   Metacentric height 5,6 ft / 1,7 m
   Roll period: 13,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 73 %
         - Recoil effect (Restricted arc if above 1.00): 0,36
   Seaboat quality (Average = 1.00): 1,10

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,600 / 0,606
   Length to Beam Ratio: 7,31 : 1
   'Natural speed' for length: 23,87 kts
   Power going to wave formation at top speed: 51 %
   Trim (Max stability = 0, Max steadiness = 100): 66
   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:   20,00 %, 18,00 ft / 5,49 m, 16,00 ft / 4,88 m
     - Forward deck:   33,00 %, 16,00 ft / 4,88 m, 15,00 ft / 4,57 m
     - Aft deck:   31,00 %, 15,00 ft / 4,57 m, 15,00 ft / 4,57 m
     - Quarter deck:   16,00 %, 15,00 ft / 4,57 m, 15,00 ft / 4,57 m
     - Average freeboard:      15,53 ft / 4,73 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 119,0 %
      - Above water (accommodation/working, high = better): 129,6 %
   Waterplane Area: 32 517 Square feet or 3 021 Square metres
   Displacement factor (Displacement / loading): 93 %
   Structure weight / hull surface area: 126 lbs/sq ft or 613 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,99
      - Longitudinal: 1,04
      - Overall: 1,00
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Misc weight:
12t => 3 TT x 450 with 3 reloads
72t => 36t for extra pump installation & 36t for extra air ventilation
135t => 125t for fire control & 10t for short Marconi

Jefgte · May 20, 2017, 03:47:42 PM

Quote...Further, as an informative measure, the use of 6x main gun is dubious. At the time, with early fire control, they wanted 4 and 5 gun salvos to ensure adequate barrels ready each salvo to help spotting. While 6 guns could fire in 3 gun salvos, you would be counting on the loading and ramming to go on schedule, which means some times you would delay firing or use just 2 barrels, which was not as useful. While the Renown class did field 6 guns, that was several stages of fire control later, and they were criticized on that basis.

Byzantine Navy use on the ACs 3T2 since 1900.
After Navy exercises, since 1890 & every years, It was observed that 2 turrets were not enough because, one turret could be destroyed or neutralised by a lucky enemy hit. With just one turret, the damaged AC could'nt be efficient.
IT was decided to add another turret to have again 2T2 (4 guns) in actions.
At this time, 1900-1904, AC & BB were built with 3T2.
The fire is normaly in complete salvoes.

Later, other countries built BBs & ACs or BCs with 4T2 or more turrets.
Byzantine Empire decide to made the same choice with more turrets.

To be short
1890-1900 => 2T2
1900-1904 => 3T2 (one surplus turret)
1905-1908 => 4T2
...