Byzantine Empire 1918-1922

[Jefgte]

at 16m for the TDS, there are only 2m interior bulges on each side.
Depth from side effects how much energy hits the armored holding bulkhead.
A single 30mm holding bulkhead is likely to prove weak at that distance.
There is still value, and it should work against at least light torpedoes...

I added the TDS on principle but without much certainty about their effectiveness.
These are small coastal vessels intended mainly for the Red Sea to replace the AGB5850 to weight in front of the Ethiopian Navy.
They will have to support the DDs, TBs & MTBs in the attacks.
Their artillery and armor are sufficient to engage heavy cruisers and support battleships.

I will SS 150m, 27kts version.

[Jefgte]

With 27kts & 5000nm range, she is nearly a cruiser, not a Coastal AGB.

AGB 9355, Byzantine Empire Armored Gunboat laid down 1923

Displacement:
   9 355 t light; 9 858 t standard; 10 311 t normal; 10 673 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (490,81 ft / 490,81 ft) x 68,90 ft x (19,95 / 20,49 ft)
   (149,60 m / 149,60 m) x 21,00 m  x (6,08 / 6,25 m)

Armament:
      6 - 10,00" / 254 mm 45,0 cal guns - 504,26lbs / 228,73kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1923 Model
     2 x 3-gun mounts on centreline ends, evenly spread
      12 - 4,72" / 120 mm 45,0 cal guns - 53,17lbs / 24,12kg shells, 250 per gun
     Breech loading guns in deck and hoist mounts, 1923 Model
     6 x 2-gun mounts on sides, evenly spread
      2 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 400 per gun
     Anti-air guns in deck mounts, 1923 Model
     2 x Single mounts on sides, aft deck centre
      2 raised mounts
      4 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 4 000 per gun
     Machine guns in deck mounts, 1923 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 3 691 lbs / 1 674 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7,87" / 200 mm   357,61 ft / 109,00 m   8,53 ft / 2,60 m
   Ends:   1,97" / 50 mm   131,23 ft / 40,00 m   7,87 ft / 2,40 m
     1,97 ft / 0,60 m Unarmoured ends
     Main Belt covers 112 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
      1,18" / 30 mm   357,61 ft / 109,00 m   17,06 ft / 5,20 m
   Beam between torpedo bulkheads 52,49 ft / 16,00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9,84" / 250 mm   2,56" / 65 mm      7,87" / 200 mm
   2nd:   0,79" / 20 mm         -         1,57" / 40 mm
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 2,76" / 70 mm
   Forecastle: 1,18" / 30 mm  Quarter deck: 1,18" / 30 mm

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 50 000 shp / 37 300 Kw = 27,00 kts
   Range 5 000nm at 12,00 kts
   Bunker at max displacement = 816 tons

Complement:
   511 - 665

Cost:
   £2,638 million / $10,551 million

Distribution of weights at normal displacement:
   Armament: 1 018 tons, 9,9 %
      - Guns: 1 018 tons, 9,9 %
   Armour: 3 029 tons, 29,4 %
      - Belts: 1 078 tons, 10,5 %
      - Torpedo bulkhead: 267 tons, 2,6 %
      - Armament: 505 tons, 4,9 %
      - Armour Deck: 1 059 tons, 10,3 %
      - Conning Towers: 121 tons, 1,2 %
   Machinery: 1 671 tons, 16,2 %
   Hull, fittings & equipment: 3 375 tons, 32,7 %
   Fuel, ammunition & stores: 956 tons, 9,3 %
   Miscellaneous weights: 261 tons, 2,5 %
      - Hull below water: 45 tons
      - Hull above water: 45 tons
      - On freeboard deck: 44 tons
      - Above deck: 127 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     13 506 lbs / 6 126 Kg = 27,0 x 10,0 " / 254 mm shells or 2,5 torpedoes
   Stability (Unstable if below 1.00): 1,07
   Metacentric height 3,3 ft / 1,0 m
   Roll period: 16,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,62
   Seaboat quality  (Average = 1.00): 1,04

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,535 / 0,539
   Length to Beam Ratio: 7,12 : 1
   'Natural speed' for length: 22,15 kts
   Power going to wave formation at top speed: 58 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   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 %,  23,62 ft / 7,20 m,  20,34 ft / 6,20 m
      - Forward deck:   32,00 %,  20,34 ft / 6,20 m,  17,06 ft / 5,20 m
      - Aft deck:   32,00 %,  17,06 ft / 5,20 m,  17,06 ft / 5,20 m
      - Quarter deck:   18,50 %,  17,06 ft / 5,20 m,  17,06 ft / 5,20 m
      - Average freeboard:      18,39 ft / 5,61 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 111,5 %
      - Above water (accommodation/working, high = better): 155,1 %
   Waterplane Area: 23 271 Square feet or 2 162 Square metres
   Displacement factor (Displacement / loading): 104 %
   Structure weight / hull surface area: 125 lbs/sq ft or 611 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,94
      - Longitudinal: 1,75
      - Overall: 1,00
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

102t for top fire control
25t for Marconi
18t for 6TTx21"
45t for additionnal ventilation
45t for additionnal pumps
26 t reserved

[Jefgte]

Update AC9 to 11620t

2T3x254, Byzantine Empire AC9 laid down 1921

Displacement:
   11 620 t light; 12 264 t standard; 13 301 t normal; 14 130 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (572,83 ft / 572,83 ft) x 71,59 ft x (20,83 / 21,85 ft)
   (174,60 m / 174,60 m) x 21,82 m  x (6,35 / 6,66 m)

Armament:
      6 - 10,00" / 254 mm 45,0 cal guns - 504,26lbs / 228,73kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1921 Model
     2 x 3-gun mounts on centreline ends, evenly spread
      12 - 5,98" / 152 mm 45,0 cal guns - 108,07lbs / 49,02kg shells, 220 per gun
     Breech loading guns in deck and hoist mounts, 1921 Model
     6 x 2-gun mounts on sides, evenly spread
      6 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 320 per gun
     Anti-air guns in deck mounts, 1921 Model
     6 x Single mounts on sides, evenly spread
      4 raised mounts
      4 - 1,85" / 47,0 mm 45,0 cal guns - 3,20lbs / 1,45kg shells, 450 per gun
     Quick firing guns in deck mounts, 1921 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      4 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 4 000 per gun
     Machine guns in deck mounts, 1921 Model
     4 x Single mounts on side ends, evenly spread
      Weight of broadside 4 417 lbs / 2 004 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7,87" / 200 mm   419,95 ft / 128,00 m   9,84 ft / 3,00 m
   Ends:   1,18" / 30 mm   134,51 ft / 41,00 m   7,87 ft / 2,40 m
     18,37 ft / 5,60 m Unarmoured ends
     Main Belt covers 113 % of normal length

   - Torpedo Bulkhead - Strengthened structural bulkheads:
      1,57" / 40 mm   419,95 ft / 128,00 m   18,37 ft / 5,60 m
   Beam between torpedo bulkheads 57,81 ft / 17,62 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9,84" / 250 mm   2,95" / 75 mm      7,87" / 200 mm
   2nd:   0,79" / 20 mm         -         1,57" / 40 mm
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

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

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 72 500 shp / 54 085 Kw = 29,00 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 1 866 tons

Complement:
   619 - 805

Cost:
   £2,969 million / $11,878 million

Distribution of weights at normal displacement:
   Armament: 1 203 tons, 9,0 %
      - Guns: 1 203 tons, 9,0 %
   Armour: 3 430 tons, 25,8 %
      - Belts: 1 388 tons, 10,4 %
      - Torpedo bulkhead: 450 tons, 3,4 %
      - Armament: 532 tons, 4,0 %
      - Armour Deck: 918 tons, 6,9 %
      - Conning Towers: 143 tons, 1,1 %
   Machinery: 2 497 tons, 18,8 %
   Hull, fittings & equipment: 4 127 tons, 31,0 %
   Fuel, ammunition & stores: 1 681 tons, 12,6 %
   Miscellaneous weights: 363 tons, 2,7 %
      - Hull below water: 56 tons
      - Hull above water: 56 tons
      - On freeboard deck: 106 tons
      - Above deck: 145 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     16 130 lbs / 7 317 Kg = 32,3 x 10,0 " / 254 mm shells or 2,6 torpedoes
   Stability (Unstable if below 1.00): 1,10
   Metacentric height 3,6 ft / 1,1 m
   Roll period: 15,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,61
   Seaboat quality  (Average = 1.00): 1,04

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,545 / 0,552
   Length to Beam Ratio: 8,00 : 1
   'Natural speed' for length: 23,93 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   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 %,  23,95 ft / 7,30 m,  20,67 ft / 6,30 m
      - Forward deck:   32,00 %,  20,67 ft / 6,30 m,  17,39 ft / 5,30 m
      - Aft deck:   32,00 %,  17,39 ft / 5,30 m,  17,39 ft / 5,30 m
      - Quarter deck:   18,50 %,  17,39 ft / 5,30 m,  17,39 ft / 5,30 m
      - Average freeboard:      18,72 ft / 5,71 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 112,6 %
      - Above water (accommodation/working, high = better): 159,6 %
   Waterplane Area: 28 485 Square feet or 2 646 Square metres
   Displacement factor (Displacement / loading): 105 %
   Structure weight / hull surface area: 128 lbs/sq ft or 625 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,96
      - Longitudinal: 1,36
      - Overall: 1,00
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

120t for top fire control - 1914
25t for Marconi
32t for 8TTx21" HW
56t for additionnal ventilation
56t for additionnal pumps
74 t reserved

[Kaiser Kirk]

Update AC9 to 11485t

2T3x254, Byzantine Empire AC9 laid down 1921

Isparta, Ispir, Ivgilu, Ivrudi

Displacement:
   11 485 t light; 12 126 t standard; 13 157 t normal; 13 981 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (572,83 ft / 572,83 ft) x 71,59 ft x (20,60 / 21,62 ft)
   (174,60 m / 174,60 m) x 21,82 m x (6,28 / 6,59 m)


   - Torpedo Bulkhead - Strengthened structural bulkheads:
      1,57" / 40 mm   374,02 ft / 114,00 m   18,37 ft / 5,60 m
   Beam between torpedo bulkheads 71,59 ft / 21,82 m

As mentioned in the Parthian thread, your TDS has no depth.
With the 40mm plated just inside the hull plating, it will not be very effective.

If you want a minimal 2m of expansion space on each side,
then the beam inside bulkheads would be 21.82- (2x2) = 17.82.

That would make the needed belt length 129.88m

Which you should then change your Freeboard Tab's forecastle and stern lengths to get to.
At 15% and 10% it works.

But then your vessel is down to 0.88 comp hull.

As another issue,
I tried to model the vessel, and when I put in your Bow (17.5%) and stern (18.5%) the
Armor "Default" tab gave a length of 111.74 - not the 114 you have.

That Bow-Stern length is what it calculates the armor deck weight from.
So it was calculating the 45mm armor on less of the hull than
the belt would indicate.

Test 1: Forecastle 15%, stern 10%, deck armor 0 / 45mm / 0 = 834t Deck armor,   default belt length :130.95.

Test 2 : Forecastle 5%, stern 5%, deck armor 0 / 45mm / 0 = 911t Deck armor, default belt length :157.14


Also, Snip's Ship Design Guidelines state "Torpedo defense systems (TDS).  Use the "Additional Bulkhead" setting."
I do not completely remember the reason, it may be SS has a flaw with that setting.

I also noticed the bow is 2m higher than the forward part of the ship.
I've made the opinion before that the guns seem to sit ~1.5 m off the deck, so a flat shot would not be possible.
However, for almost all combat ranges, you would elevate slightly and so fire over your bow.
So this is not the concern it was when Fire Control ranges were 6000m.

Sorry to bring up these issues this late. :(

[TacCovert4]

Yeah, strength bulkheads are reinforcement of the ships structure.  So it inflates composite strength....but if the ship were to take a torpedo hit, it would cause full on structural issues.  Strengthened bulkheads just aren't viable past about 1908 or so,  they're more for small mines and underwater shell hits.   

[Jefgte]

2T3x254, Byzantine Empire AC9 laid down 1921

Displacement:
   12 250 t light; 12 789 t standard; 13 860 t normal; 14 716 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (589,24 ft / 589,24 ft) x 75,46 ft x (20,20 / 21,18 ft)
   (179,60 m / 179,60 m) x 23,00 m  x (6,16 / 6,46 m)

Armament:
      6 - 10,00" / 254 mm 45,0 cal guns - 504,26lbs / 228,73kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1921 Model
     2 x 3-gun mounts on centreline ends, evenly spread
      8 - 4,72" / 120 mm 45,0 cal guns - 53,17lbs / 24,12kg shells, 220 per gun
     Breech loading guns in deck and hoist mounts, 1921 Model
     8 x 2-gun mounts on sides, evenly spread
      2 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 320 per gun
     Anti-air guns in deck mounts, 1921 Model
     2 x Single mounts on sides amidships
      2 raised mounts
      4 - 1,85" / 47,0 mm 45,0 cal guns - 3,20lbs / 1,45kg shells, 450 per gun
     Quick firing guns in deck mounts, 1921 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      4 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 4 000 per gun
     Machine guns in deck mounts, 1921 Model
     4 x Single mounts on side ends, evenly spread
      Weight of broadside 3 491 lbs / 1 584 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7,87" / 200 mm   383,86 ft / 117,00 m   11,15 ft / 3,40 m
   Ends:   1,18" / 30 mm   203,41 ft / 62,00 m   9,19 ft / 2,80 m
     1,97 ft / 0,60 m Unarmoured ends
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1,77" / 45 mm   383,86 ft / 117,00 m   18,37 ft / 5,60 m
   Beam between torpedo bulkheads 62,34 ft / 19,00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9,84" / 250 mm   2,95" / 75 mm      7,87" / 200 mm
   2nd:   0,79" / 20 mm   0,39" / 10 mm      1,57" / 40 mm
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

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

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 74 000 shp / 55 204 Kw = 29,02 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 1 927 tons

Complement:
   638 - 830

Cost:
   £2,829 million / $11,314 million

Distribution of weights at normal displacement:
   Armament: 963 tons, 7,0 %
      - Guns: 963 tons, 7,0 %
   Armour: 3 638 tons, 26,2 %
      - Belts: 1 506 tons, 10,9 %
      - Torpedo bulkhead: 462 tons, 3,3 %
      - Armament: 531 tons, 3,8 %
      - Armour Deck: 991 tons, 7,2 %
      - Conning Towers: 147 tons, 1,1 %
   Machinery: 2 548 tons, 18,4 %
   Hull, fittings & equipment: 4 778 tons, 34,5 %
   Fuel, ammunition & stores: 1 610 tons, 11,6 %
   Miscellaneous weights: 323 tons, 2,3 %
      - Hull below water: 60 tons
      - Hull above water: 60 tons
      - On freeboard deck: 82 tons
      - Above deck: 121 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     19 057 lbs / 8 644 Kg = 38,1 x 10,0 " / 254 mm shells or 3,2 torpedoes
   Stability (Unstable if below 1.00): 1,15
   Metacentric height 4,3 ft / 1,3 m
   Roll period: 15,3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,38
   Seaboat quality  (Average = 1.00): 1,01

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,540 / 0,547
   Length to Beam Ratio: 7,81 : 1
   'Natural speed' for length: 24,27 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 0,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   17,50 %,  22,97 ft / 7,00 m,  20,01 ft / 6,10 m
      - Forward deck:   32,50 %,  20,01 ft / 6,10 m,  17,06 ft / 5,20 m
      - Aft deck:   32,50 %,  17,06 ft / 5,20 m,  17,06 ft / 5,20 m
      - Quarter deck:   17,50 %,  17,06 ft / 5,20 m,  17,06 ft / 5,20 m
      - Average freeboard:      18,26 ft / 5,57 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 100,2 %
      - Above water (accommodation/working, high = better): 163,4 %
   Waterplane Area: 30 742 Square feet or 2 856 Square metres
   Displacement factor (Displacement / loading): 114 %
   Structure weight / hull surface area: 124 lbs/sq ft or 607 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,97
      - Longitudinal: 1,22
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

96t for top fire control - 1914
25t for Marconi
32t for 8TTx21" HW
56t for additionnal ventilation
56t for additionnal pumps
50t reserved

----------------------- or

Colonial Cruiser, Byzantine Empire AC9 laid down 1921

Displacement:
   12 335 t light; 12 994 t standard; 14 068 t normal; 14 928 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (572,83 ft / 572,83 ft) x 74,87 ft x (20,80 / 21,80 ft)
   (174,60 m / 174,60 m) x 22,82 m  x (6,34 / 6,65 m)

Armament:
      9 - 10,00" / 254 mm 45,0 cal guns - 504,26lbs / 228,73kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1921 Model
     3 x 3-gun mounts on centreline ends, majority forward
      1 raised mount - superfiring
      8 - 4,72" / 120 mm 45,0 cal guns - 53,18lbs / 24,12kg shells, 220 per gun
     Breech loading guns in deck and hoist mounts, 1921 Model
     8 x 2-gun mounts on sides, evenly spread
      8 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 320 per gun
     Anti-air guns in deck mounts, 1921 Model
     8 x Single mounts on sides, evenly spread
      8 raised mounts
      4 - 1,85" / 47,0 mm 45,0 cal guns - 3,20lbs / 1,45kg shells, 450 per gun
     Quick firing guns in deck mounts, 1921 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      4 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 4 000 per gun
     Machine guns in deck mounts, 1921 Model
     4 x Single mounts on side ends, evenly spread
      Weight of broadside 5 086 lbs / 2 307 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7,87" / 200 mm   370,73 ft / 113,00 m   9,84 ft / 3,00 m
   Ends:   1,18" / 30 mm   200,13 ft / 61,00 m   7,87 ft / 2,40 m
     1,97 ft / 0,60 m Unarmoured ends
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1,57" / 40 mm   370,73 ft / 113,00 m   18,37 ft / 5,60 m
   Beam between torpedo bulkheads 58,46 ft / 17,82 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9,84" / 250 mm   2,95" / 75 mm      7,87" / 200 mm
   2nd:   0,79" / 20 mm   0,39" / 10 mm      1,57" / 40 mm
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

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

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 57 000 shp / 42 522 Kw = 27,01 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 1 934 tons

Complement:
   645 - 839

Cost:
   £2,998 million / $11,992 million

Distribution of weights at normal displacement:
   Armament: 1 399 tons, 9,9 %
      - Guns: 1 399 tons, 9,9 %
   Armour: 3 644 tons, 25,9 %
      - Belts: 1 286 tons, 9,1 %
      - Torpedo bulkhead: 397 tons, 2,8 %
      - Armament: 846 tons, 6,0 %
      - Armour Deck: 967 tons, 6,9 %
      - Conning Towers: 148 tons, 1,1 %
   Machinery: 1 963 tons, 14,0 %
   Hull, fittings & equipment: 4 958 tons, 35,2 %
   Fuel, ammunition & stores: 1 733 tons, 12,3 %
   Miscellaneous weights: 371 tons, 2,6 %
      - Hull below water: 60 tons
      - Hull above water: 60 tons
      - On freeboard deck: 82 tons
      - Above deck: 169 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     18 926 lbs / 8 585 Kg = 37,9 x 10,0 " / 254 mm shells or 3,4 torpedoes
   Stability (Unstable if below 1.00): 1,05
   Metacentric height 3,5 ft / 1,1 m
   Roll period: 16,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,67
   Seaboat quality  (Average = 1.00): 1,04

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,552 / 0,559
   Length to Beam Ratio: 7,65 : 1
   'Natural speed' for length: 23,93 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   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 %,  22,31 ft / 6,80 m,  19,69 ft / 6,00 m
      - Forward deck:   32,50 %,  19,69 ft / 6,00 m,  16,40 ft / 5,00 m
      - Aft deck:   32,50 %,  16,40 ft / 5,00 m,  16,40 ft / 5,00 m
      - Quarter deck:   17,50 %,  16,40 ft / 5,00 m,  16,40 ft / 5,00 m
      - Average freeboard:      17,70 ft / 5,39 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 99,3 %
      - Above water (accommodation/working, high = better): 152,5 %
   Waterplane Area: 29 987 Square feet or 2 786 Square metres
   Displacement factor (Displacement / loading): 113 %
   Structure weight / hull surface area: 138 lbs/sq ft or 673 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,97
      - Longitudinal: 1,25
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

120t for top fire control - 1914
25t for Marconi
32t for 8TTx21" HW
56t for additionnal ventilation
56t for additionnal pumps
50t reserved

[The Rock Doctor]

The nine-gunner can work against second-rate powers but it's going to have trouble with battlecruisers, perhaps.

[snip]

Also, Snip's Ship Design Guidelines state "Torpedo defense systems (TDS).  Use the "Additional Bulkhead" setting."
I do not completely remember the reason, it may be SS has a flaw with that setting.

It is a flaw with SpringSharp in that adding to the Strengthened Structural Bulkheads option only shifts weight around from the Hull, fittings & equipment section to Armor -> TDS with no effect on composite strength. In some testing back when that became a part of the rules, someone was able to make a ship with something like -15% Hull, fittings & equipment which clocked in a 1.00 composite.

[The Rock Doctor]

This person is my new hero.

[Kaiser Kirk]

The nine-gunner can work against second-rate powers but it's going to have trouble with battlecruisers, perhaps.

Parthia does not really have battlecruisers. All we have is dreadnaughts.
The closest we have is the two 26knot 10x 365L45 ships.
Which I guess means Parthia is a 2nd rate power.

It is similar to Byzantine/Parthia's older Armored cruisers.

[The Rock Doctor]

Naw, I'll count those two 26 knot ships as battlecruisers to keep you in Tier One.

[Jefgte]

The nine-gunner can work against second-rate powers but it's going to have trouble with battlecruisers, perhaps.

It is not a surprise that a 12000t -27kts cruiser is less strong than a 18000t - 29kts cruiser.

;)

[Jefgte]

2T3x254, Byzantine Empire AC9 laid down 1921

Isparta, Ispir, Ivgilu, Isrudi

Displacement:
   12 420 t light; 13 016 t standard; 14 086 t normal; 14 942 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (573,16 ft / 573,16 ft) x 75,46 ft x (21,71 / 22,73 ft)
   (174,70 m / 174,70 m) x 23,00 m  x (6,62 / 6,93 m)

Armament:
      6 - 10,00" / 254 mm 45,0 cal guns - 504,26lbs / 228,73kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1921 Model
     2 x 3-gun mounts on centreline ends, evenly spread
      8 - 5,98" / 152 mm 45,0 cal guns - 108,07lbs / 49,02kg shells, 200 per gun
     Breech loading guns in turret on barbette mounts, 1921 Model
     4 x 2-gun mounts on sides, aft deck forward
      6 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 300 per gun
     Anti-air guns in deck mounts, 1921 Model
     6 x Single mounts on sides, evenly spread
      6 raised mounts
      4 - 1,85" / 47,0 mm 45,0 cal guns - 3,20lbs / 1,45kg shells, 450 per gun
     Quick firing guns in deck mounts, 1921 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      4 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 4 000 per gun
     Machine guns in deck mounts, 1921 Model
     4 x Single mounts on side ends, evenly spread
      Weight of broadside 3 985 lbs / 1 807 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7,87" / 200 mm   383,86 ft / 117,00 m   11,15 ft / 3,40 m
   Ends:   1,18" / 30 mm   187,01 ft / 57,00 m   9,19 ft / 2,80 m
     2,30 ft / 0,70 m Unarmoured ends
     Main Belt covers 103 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1,77" / 45 mm   383,86 ft / 117,00 m   19,03 ft / 5,80 m
   Beam between torpedo bulkheads 62,34 ft / 19,00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9,84" / 250 mm   2,95" / 75 mm      7,87" / 200 mm
   2nd:   1,97" / 50 mm   0,79" / 20 mm      1,77" / 45 mm
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

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

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 74 900 shp / 55 875 Kw = 29,00 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 1 926 tons

Complement:
   646 - 840

Cost:
   £2,966 million / $11,865 million

Distribution of weights at normal displacement:
   Armament: 1 105 tons, 7,8 %
      - Guns: 1 105 tons, 7,8 %
   Armour: 3 672 tons, 26,1 %
      - Belts: 1 491 tons, 10,6 %
      - Torpedo bulkhead: 479 tons, 3,4 %
      - Armament: 602 tons, 4,3 %
      - Armour Deck: 953 tons, 6,8 %
      - Conning Towers: 148 tons, 1,1 %
   Machinery: 2 579 tons, 18,3 %
   Hull, fittings & equipment: 4 756 tons, 33,8 %
   Fuel, ammunition & stores: 1 666 tons, 11,8 %
   Miscellaneous weights: 307 tons, 2,2 %
      - Hull below water: 60 tons
      - Hull above water: 60 tons
      - On freeboard deck: 52 tons
      - Above deck: 135 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     18 082 lbs / 8 202 Kg = 36,2 x 10,0 " / 254 mm shells or 3,1 torpedoes
   Stability (Unstable if below 1.00): 1,13
   Metacentric height 4,1 ft / 1,3 m
   Roll period: 15,6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,44
   Seaboat quality  (Average = 1.00): 1,01

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,525 / 0,532
   Length to Beam Ratio: 7,60 : 1
   'Natural speed' for length: 23,94 kts
   Power going to wave formation at top speed: 56 %
   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:   16,50 %,  22,97 ft / 7,00 m,  20,01 ft / 6,10 m
      - Forward deck:   33,50 %,  20,01 ft / 6,10 m,  17,06 ft / 5,20 m
      - Aft deck:   34,00 %,  17,06 ft / 5,20 m,  17,06 ft / 5,20 m
      - Quarter deck:   16,00 %,  17,06 ft / 5,20 m,  17,06 ft / 5,20 m
      - Average freeboard:      18,24 ft / 5,56 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 103,0 %
      - Above water (accommodation/working, high = better): 154,7 %
   Waterplane Area: 29 488 Square feet or 2 739 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 129 lbs/sq ft or 629 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,96
      - Longitudinal: 1,36
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

110t for top fire control - 1914
25t for Marconi
32t for 8TTx21" HW
56t for additionnal ventilation
56t for additionnal pumps
20t reserved

[TacCovert4]

Considering what it's guns are, I think that the decks are a bit 'thin'.  I'd want at least 2in of deck in this era, given that there are plenty of ships running around already with guns that will be at or close to 2in of deck penetration at long combat ranges.

[Jefgte]

Considering what it's guns are, I think that the decks are a bit 'thin'.  I'd want at least 2in of deck in this era, given that there are plenty of ships running around already with guns that will be at or close to 2in of deck penetration at long combat ranges.

You're right Tac
;)

2T3x254, Byzantine Empire AC9 laid down 1921

Isparta, Ispir, Ivgilu, Isrudi

Displacement:
   12 520 t light; 13 118 t standard; 14 193 t normal; 15 052 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (573,16 ft / 573,16 ft) x 75,46 ft x (21,88 / 22,90 ft)
   (174,70 m / 174,70 m) x 23,00 m  x (6,67 / 6,98 m)

Armament:
      6 - 10,00" / 254 mm 45,0 cal guns - 504,26lbs / 228,73kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1921 Model
     2 x 3-gun mounts on centreline ends, evenly spread
      8 - 5,98" / 152 mm 45,0 cal guns - 108,07lbs / 49,02kg shells, 200 per gun
     Breech loading guns in turret on barbette mounts, 1921 Model
     4 x 2-gun mounts on sides, aft deck forward
      6 - 3,00" / 76,2 mm 45,0 cal guns - 13,62lbs / 6,18kg shells, 300 per gun
     Anti-air guns in deck mounts, 1921 Model
     6 x Single mounts on sides, evenly spread
      6 raised mounts
      4 - 1,85" / 47,0 mm 45,0 cal guns - 3,20lbs / 1,45kg shells, 450 per gun
     Quick firing guns in deck mounts, 1921 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      4 - 0,30" / 7,7 mm 90,0 cal guns - 0,02lbs / 0,01kg shells, 4 000 per gun
     Machine guns in deck mounts, 1921 Model
     4 x Single mounts on side ends, evenly spread
      Weight of broadside 3 985 lbs / 1 807 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7,87" / 200 mm   383,86 ft / 117,00 m   11,15 ft / 3,40 m
   Ends:   1,18" / 30 mm   187,01 ft / 57,00 m   9,19 ft / 2,80 m
     2,30 ft / 0,70 m Unarmoured ends
     Main Belt covers 103 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1,77" / 45 mm   383,86 ft / 117,00 m   19,03 ft / 5,80 m
   Beam between torpedo bulkheads 62,34 ft / 19,00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9,84" / 250 mm   2,95" / 75 mm      7,87" / 200 mm
   2nd:   1,97" / 50 mm   0,79" / 20 mm      1,77" / 45 mm
   3rd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -
   5th:   0,39" / 10 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 1,97" / 50 mm
   Forecastle: 1,18" / 30 mm  Quarter deck: 1,77" / 45 mm

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 75 230 shp / 56 121 Kw = 29,00 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 1 934 tons

Complement:
   649 - 845

Cost:
   £2,979 million / $11,917 million

Distribution of weights at normal displacement:
   Armament: 1 105 tons, 7,8 %
      - Guns: 1 105 tons, 7,8 %
   Armour: 3 763 tons, 26,5 %
      - Belts: 1 491 tons, 10,5 %
      - Torpedo bulkhead: 479 tons, 3,4 %
      - Armament: 602 tons, 4,2 %
      - Armour Deck: 1 043 tons, 7,3 %
      - Conning Towers: 149 tons, 1,1 %
   Machinery: 2 591 tons, 18,3 %
   Hull, fittings & equipment: 4 752 tons, 33,5 %
   Fuel, ammunition & stores: 1 673 tons, 11,8 %
   Miscellaneous weights: 309 tons, 2,2 %
      - Hull below water: 60 tons
      - Hull above water: 60 tons
      - On freeboard deck: 54 tons
      - Above deck: 135 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     18 181 lbs / 8 247 Kg = 36,4 x 10,0 " / 254 mm shells or 3,1 torpedoes
   Stability (Unstable if below 1.00): 1,13
   Metacentric height 4,1 ft / 1,3 m
   Roll period: 15,6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,44
   Seaboat quality  (Average = 1.00): 1,01

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,525 / 0,532
   Length to Beam Ratio: 7,60 : 1
   'Natural speed' for length: 23,94 kts
   Power going to wave formation at top speed: 56 %
   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:   16,50 %,  22,97 ft / 7,00 m,  20,01 ft / 6,10 m
      - Forward deck:   33,50 %,  20,01 ft / 6,10 m,  17,06 ft / 5,20 m
      - Aft deck:   34,00 %,  17,06 ft / 5,20 m,  17,06 ft / 5,20 m
      - Quarter deck:   16,00 %,  17,06 ft / 5,20 m,  17,06 ft / 5,20 m
      - Average freeboard:      18,24 ft / 5,56 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 102,6 %
      - Above water (accommodation/working, high = better): 154,0 %
   Waterplane Area: 29 488 Square feet or 2 739 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 129 lbs/sq ft or 628 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,96
      - Longitudinal: 1,36
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

110t for top fire control - 1914
25t for Marconi
32t for 8TTx21" HW
56t for additionnal ventilation
56t for additionnal pumps
22t reserved