Imperial Roman Navy: 1931-1935 Designs

[snip]

New build plan, new thread.

Per Unit Cost (Planned)
	Expressed as BP					Expressed as Tonnage
Line of Battle Ships	51.25					51250
Frigates	27.33					27333
Aviation Ships	20.50					20500
Cruisers	11.71					11715
Destroyers	2.50					2500
Corvettes	1.50					1500
Light Torpedo Craft	0.04					40
Submarines	0.75					750
Experimental	0.00					0
Auxiliary	2.34					2343
Refits	53.44					53435

[snip]

First up, the Big Stick. Shipping a new 410L50 firing a 1210.00kg shell, the LBS/F-31 is an widened LBS-26 to accommodate the longer guns. The 140mm guns are moved to a turret and acquire DP capabilities. 90mm and 28mm batteries double in barrels-per-mount. Deck armor is also thickened.

LBS/F-31A, Imperial Roman Republic Fast Line of Battle Ship laid down 1931

Displacement:
   51,000 t light; 53,768 t standard; 56,443 t normal; 58,583 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (869.41 ft / 853.02 ft) x 111.55 ft x (31.17 / 32.18 ft)
   (265.00 m / 260.00 m) x 34.00 m  x (9.50 / 9.81 m)

Armament:
      8 - 16.14" / 410 mm 50.0 cal guns - 2,667.59lbs / 1,210.00kg shells, 110 per gun
     Breech loading guns in turret on barbette mounts, 1931 Model
     4 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      20 - 5.51" / 140 mm 50.0 cal guns - 85.98lbs / 39.00kg shells, 200 per gun
     Dual purpose guns in turret on barbette mounts, 1931 Model
     10 x Twin mounts on sides, evenly spread
      4 raised mounts
      16 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
     Dual purpose guns in deck and hoist mounts, 1926 Model
     8 x Twin mounts on sides, evenly spread
      8 raised mounts
      48 - 1.10" / 28.0 mm 55.0 cal guns - 0.73lbs / 0.33kg shells, 5,000 per gun
     Anti-air guns in deck and hoist mounts, 1931 Model
     6 x 2 row octuple mounts on sides, evenly spread
      6 raised mounts
      10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.00kg shells, 15,000 per gun
     Machine guns in deck mounts, 1931 Model
     10 x Single mounts on sides, evenly spread
      10 raised mounts
      Weight of broadside 23,430 lbs / 10,628 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.4" / 340 mm   513.35 ft / 156.47 m   18.68 ft / 5.69 m
   Ends:   1.97" / 50 mm   339.67 ft / 103.53 m   13.12 ft / 4.00 m
     Main Belt covers 93 % of normal length
     Main Belt inclined 15.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      2.56" / 65 mm   513.35 ft / 156.47 m   34.45 ft / 10.50 m
   Beam between torpedo bulkheads 86.94 ft / 26.50 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   17.3" / 440 mm   7.09" / 180 mm      11.8" / 300 mm
   2nd:   1.97" / 50 mm   0.59" / 15 mm      3.94" / 100 mm
   3rd:   0.20" / 5 mm   0.20" / 5 mm      0.98" / 25 mm
   4th:         -            -         0.59" / 15 mm
   5th:   0.20" / 5 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 5.71" / 145 mm
   Forecastle: 1.38" / 35 mm  Quarter deck: 1.38" / 35 mm

   - Conning towers: Forward 13.39" / 340 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 192,000 shp / 143,232 Kw = 30.31 kts
   Range 8,000nm at 14.00 kts
   Bunker at max displacement = 4,815 tons

Complement:
   1,830 - 2,380

Cost:
   £20.370 million / $81.481 million

Distribution of weights at normal displacement:
   Armament: 4,501 tons, 8.0 %
      - Guns: 4,501 tons, 8.0 %
   Armour: 18,324 tons, 32.5 %
      - Belts: 5,915 tons, 10.5 %
      - Torpedo bulkhead: 1,674 tons, 3.0 %
      - Armament: 3,792 tons, 6.7 %
      - Armour Deck: 6,518 tons, 11.5 %
      - Conning Tower: 424 tons, 0.8 %
   Machinery: 5,742 tons, 10.2 %
   Hull, fittings & equipment: 19,523 tons, 34.6 %
   Fuel, ammunition & stores: 5,443 tons, 9.6 %
   Miscellaneous weights: 2,910 tons, 5.2 %
      - Hull below water: 1,900 tons
      - Hull above water: 235 tons
      - On freeboard deck: 675 tons
      - Above deck: 100 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     80,838 lbs / 36,668 Kg = 38.4 x 16.1 " / 410 mm shells or 12.2 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 7.9 ft / 2.4 m
   Roll period: 16.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.69
   Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a round stern
   Block coefficient (normal/deep): 0.666 / 0.670
   Length to Beam Ratio: 7.65 : 1
   'Natural speed' for length: 29.21 kts
   Power going to wave formation at top speed: 52 %
   Trim (Max stability = 0, Max steadiness = 100): 49
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 5.64 ft / 1.72 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.82 %,  29.53 ft / 9.00 m,  27.07 ft / 8.25 m
      - Forward deck:   40.00 %,  27.07 ft / 8.25 m,  27.07 ft / 8.25 m
      - Aft deck:   20.18 %,  18.04 ft / 5.50 m,  18.04 ft / 5.50 m
      - Quarter deck:   19.00 %,  18.04 ft / 5.50 m,  18.04 ft / 5.50 m
      - Average freeboard:      23.74 ft / 7.24 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 91.8 %
      - Above water (accommodation/working, high = better): 185.1 %
   Waterplane Area: 73,955 Square feet or 6,871 Square metres
   Displacement factor (Displacement / loading): 107 %
   Structure weight / hull surface area: 216 lbs/sq ft or 1,057 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.99
      - Longitudinal: 1.03
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room

Misc Weight Distribution
-Below Water (1900t)
--1436t Electric Drives
--200t Additional Pumps
--200t Additional Damage Control Equipment
--50t Improved Food & Drink storage
--9t Construction Reserve
-Above Water (235t)
--40t Improved Officer Accommodations
--40t Improved Crew Accommodations
--70t Additional Damage Control Equipment
--20t Enhanced Ventilation and Crew Comfort
--50t Long Range Wireless (2x)
--10t Construction Reserve
-On Deck (675t)
--406t 1918 Fire Control
--50t Aviation Facilities (2x Recon Plane & 2x Catapults)
--50t Admiralty Accommodations
--50t Enhanced Ventilation and Crew Comfort
--80t Flag Facilities
--10t Short Range Wireless
--9t Construction Reserve
-Above Deck (100t)
--15t Additional Optical Spotting Equipment
--70t Night Fighting Equipment
--15t Improved Signaling Equipment

This is noted as the A design, B will have a different secondary setup to be simmed Later(tm).

[Kaiser Kirk]

Very large indeed.
Again, lots and lots of misc wt. Some of my comments from the other thread apply.
For such a large, important ship, skimping on belt coverage to below the raft-body length seems like
a curious choice. I would go for the full length and narrow the torpedo "Beam between torpedo bulkheads"
so that the machinery took that length.

Also, technical detail everyone does - the inclined belt should be  '-' to be inclined outwards.
However, you are supposed to have a line in notes as to the true height vs. the height/cos(incline) = modeled height.
Again, while I suspect the TDS rises to the bottom of the main deck, but can't be sure.

[snip]

Now for something a little smaller, the Frigate. Right now, there are three competing designs. All the designs share common protection, misc weight, and broadly similar secondary armament.

Design A concentrates a battery of eight 340L45 rifles forward, giving it massive firepower in the chase.

F-31A, Imperial Roman Republic Frigate laid down 1931

Displacement:
   28,868 t light; 30,563 t standard; 32,824 t normal; 34,633 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (705.37 ft / 695.54 ft) x 101.71 ft x (29.53 / 30.81 ft)
   (215.00 m / 212.00 m) x 31.00 m  x (9.00 / 9.39 m)

Armament:
      8 - 13.39" / 340 mm 45.0 cal guns - 1,450.64lbs / 658.00kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1927 Model
     2 x Quad mounts on centreline, forward evenly spread
      1 raised mount
      12 - 5.51" / 140 mm 50.0 cal guns - 88.63lbs / 40.20kg shells, 200 per gun
     Dual purpose guns in turret on barbette mounts, 1931 Model
     2 x Quad mounts on sides, aft deck aft
     1 x Quad mount on centreline, aft deck aft
      1 raised mount
      12 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 350 per gun
     Dual purpose guns in deck and hoist mounts, 1926 Model
     4 x Twin mounts on sides, aft evenly spread
      2 raised mounts
     2 x Twin mounts on sides, forward deck aft
      48 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
     Anti-air guns in deck mounts, 1926 Model
     6 x 2 row octuple mounts on sides, evenly spread
      6 raised mounts
      10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
     Machine guns in deck mounts, 1931 Model
     10 x Single mounts on sides, aft evenly spread
      10 double raised mounts
      Weight of broadside 12,955 lbs / 5,876 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.06" / 230 mm   447.83 ft / 136.50 m   18.68 ft / 5.69 m
   Ends:   Unarmoured
     Main Belt covers 99 % of normal length
     Main Belt inclined -15.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.57" / 40 mm   447.83 ft / 136.50 m   31.17 ft / 9.50 m
   Beam between torpedo bulkheads 75.46 ft / 23.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.4" / 340 mm   7.09" / 180 mm      11.0" / 280 mm
   2nd:   1.97" / 50 mm   0.59" / 15 mm      3.94" / 100 mm
   3rd:   0.20" / 5 mm   0.20" / 5 mm      0.98" / 25 mm

   - Armoured deck - multiple decks:
   For and Aft decks: 3.94" / 100 mm
   Forecastle: 1.38" / 35 mm  Quarter deck: 1.38" / 35 mm

   - Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 140,000 shp / 104,440 Kw = 30.15 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 4,070 tons

Complement:
   1,219 - 1,585

Cost:
   £11.544 million / $46.177 million

Distribution of weights at normal displacement:
   Armament: 2,045 tons, 6.2 %
      - Guns: 2,045 tons, 6.2 %
   Armour: 9,142 tons, 27.9 %
      - Belts: 3,269 tons, 10.0 %
      - Torpedo bulkhead: 813 tons, 2.5 %
      - Armament: 1,656 tons, 5.0 %
      - Armour Deck: 3,187 tons, 9.7 %
      - Conning Tower: 217 tons, 0.7 %
   Machinery: 4,187 tons, 12.8 %
   Hull, fittings & equipment: 12,794 tons, 39.0 %
   Fuel, ammunition & stores: 3,956 tons, 12.1 %
   Miscellaneous weights: 700 tons, 2.1 %
      - Hull below water: 230 tons
      - Hull above water: 120 tons
      - On freeboard deck: 300 tons
      - Above deck: 50 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     49,885 lbs / 22,627 Kg = 41.6 x 13.4 " / 340 mm shells or 7.5 torpedoes
   Stability (Unstable if below 1.00): 1.26
   Metacentric height 7.8 ft / 2.4 m
   Roll period: 15.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.53
   Seaboat quality  (Average = 1.00): 1.03

Hull form characteristics:
   Hull has rise aft of midbreak, low quarterdeck ,
     a normal bow and a round stern
   Block coefficient (normal/deep): 0.550 / 0.556
   Length to Beam Ratio: 6.84 : 1
   'Natural speed' for length: 26.37 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 49
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 2.07 ft / 0.63 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  21.33 ft / 6.50 m,  18.86 ft / 5.75 m
      - Forward deck:   35.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Aft deck:   30.00 %,  27.89 ft / 8.50 m,  27.89 ft / 8.50 m
      - Quarter deck:   15.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Average freeboard:      21.77 ft / 6.64 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 98.7 %
      - Above water (accommodation/working, high = better): 177.7 %
   Waterplane Area: 49,369 Square feet or 4,587 Square metres
   Displacement factor (Displacement / loading): 116 %
   Structure weight / hull surface area: 198 lbs/sq ft or 968 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.64
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room

Design B is the fastest of the bunch, toping out at a leisurely 32.75knts. Its the most lightly armed of the bunch, sporting twelve 235L45 rifles in three quad turrets.

F-31B, Imperial Roman Republic Armored Cruiser laid down 1931

Displacement:
   27,984 t light; 29,308 t standard; 31,793 t normal; 33,781 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (807.08 ft / 793.96 ft) x 90.22 ft x (26.25 / 27.58 ft)
   (246.00 m / 242.00 m) x 27.50 m  x (8.00 / 8.41 m)

Armament:
      12 - 9.25" / 235 mm 45.0 cal guns - 478.40lbs / 217.00kg shells, 125 per gun
     Breech loading guns in turret on barbette mounts, 1931 Model
     3 x Quad mounts on centreline ends, majority forward
      1 raised mount - superfiring
      16 - 5.51" / 140 mm 50.0 cal guns - 85.98lbs / 39.00kg shells, 200 per gun
     Dual purpose guns in turret on barbette mounts, 1931 Model
     8 x Twin mounts on sides, evenly spread
      10 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 350 per gun
     Anti-air guns in deck and hoist mounts, 1926 Model
     4 x Twin mounts on sides, evenly spread
      4 raised mounts
     1 x Twin mount on centreline, aft deck centre
      1 raised mount
      48 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
     Anti-air guns in deck mounts, 1926 Model
     6 x 2 row octuple mounts on sides, evenly spread
      6 raised mounts
      Weight of broadside 7,361 lbs / 3,339 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.06" / 230 mm   544.03 ft / 165.82 m   18.67 ft / 5.69 m
   Ends:   Unarmoured
     Main Belt covers 105 % of normal length
     Main Belt inclined -15.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.57" / 40 mm   544.03 ft / 165.82 m   29.53 ft / 9.00 m
   Beam between torpedo bulkheads 65.62 ft / 20.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9.25" / 235 mm   3.94" / 100 mm      7.48" / 190 mm
   2nd:   1.97" / 50 mm   0.98" / 25 mm      3.94" / 100 mm
   3rd:   0.20" / 5 mm   0.20" / 5 mm      0.98" / 25 mm

   - Armoured deck - multiple decks:
   For and Aft decks: 3.94" / 100 mm
   Forecastle: 1.38" / 35 mm  Quarter deck: 1.38" / 35 mm

   - Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 180,000 shp / 134,280 Kw = 32.79 kts
   Range 11,000nm at 14.00 kts
   Bunker at max displacement = 4,473 tons

Complement:
   1,189 - 1,547

Cost:
   £10.298 million / $41.193 million

Distribution of weights at normal displacement:
   Armament: 1,526 tons, 4.8 %
      - Guns: 1,526 tons, 4.8 %
   Armour: 9,798 tons, 30.8 %
      - Belts: 3,814 tons, 12.0 %
      - Torpedo bulkhead: 936 tons, 2.9 %
      - Armament: 1,409 tons, 4.4 %
      - Armour Deck: 3,426 tons, 10.8 %
      - Conning Tower: 213 tons, 0.7 %
   Machinery: 5,383 tons, 16.9 %
   Hull, fittings & equipment: 10,577 tons, 33.3 %
   Fuel, ammunition & stores: 3,809 tons, 12.0 %
   Miscellaneous weights: 700 tons, 2.2 %
      - Hull below water: 230 tons
      - Hull above water: 120 tons
      - On freeboard deck: 300 tons
      - Above deck: 50 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     47,852 lbs / 21,705 Kg = 120.8 x 9.3 " / 235 mm shells or 6.6 torpedoes
   Stability (Unstable if below 1.00): 1.26
   Metacentric height 6.5 ft / 2.0 m
   Roll period: 14.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 51 %
         - Recoil effect (Restricted arc if above 1.00): 0.38
   Seaboat quality  (Average = 1.00): 1.08

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a round stern
   Block coefficient (normal/deep): 0.592 / 0.598
   Length to Beam Ratio: 8.80 : 1
   'Natural speed' for length: 28.18 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 47
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 1.77 ft / 0.54 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  31.17 ft / 9.50 m,  27.89 ft / 8.50 m
      - Forward deck:   25.00 %,  27.89 ft / 8.50 m,  27.89 ft / 8.50 m
      - Aft deck:   43.52 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Quarter deck:   11.48 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Average freeboard:      23.19 ft / 7.07 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 104.0 %
      - Above water (accommodation/working, high = better): 184.5 %
   Waterplane Area: 51,994 Square feet or 4,830 Square metres
   Displacement factor (Displacement / loading): 117 %
   Structure weight / hull surface area: 153 lbs/sq ft or 745 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.99
      - Longitudinal: 1.01
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room

Design C is functionally a modernized Jeanne d'Arc (who's own modernization will occur roughly around this time). Its the most conservative of the bunch.

F-31C, Imperial Roman Frigate laid down 1931

Displacement:
   28,380 t light; 29,975 t standard; 31,670 t normal; 33,026 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (705.40 ft / 688.98 ft) x 101.71 ft x (29.53 / 30.51 ft)
   (215.00 m / 210.00 m) x 31.00 m  x (9.00 / 9.30 m)

Armament:
      8 - 13.39" / 340 mm 45.0 cal guns - 1,450.64lbs / 658.00kg shells, 110 per gun
     Breech loading guns in turret on barbette mounts, 1927 Model
     2 x Quad mounts on centreline ends, evenly spread
      12 - 5.51" / 140 mm 50.0 cal guns - 85.98lbs / 39.00kg shells, 200 per gun
     Dual purpose guns in turret on barbette mounts, 1931 Model
     6 x Twin mounts on sides, evenly spread
      10 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 350 per gun
     Dual purpose guns in deck and hoist mounts, 1926 Model
     4 x Twin mounts on sides, aft evenly spread
      4 raised mounts
     1 x Twin mount on centreline, aft deck centre
      1 raised mount
      48 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
     Anti-air guns in deck mounts, 1926 Model
     6 x 2 row octuple mounts on sides, evenly spread
      6 raised mounts
      10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
     Machine guns in deck mounts, 1931 Model
     10 x Single mounts on sides, evenly spread
      10 raised mounts
      Weight of broadside 12,881 lbs / 5,843 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.06" / 230 mm   445.70 ft / 135.85 m   18.68 ft / 5.69 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length
     Main Belt inclined -15.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.57" / 40 mm   445.70 ft / 135.85 m   31.17 ft / 9.50 m
   Beam between torpedo bulkheads 86.94 ft / 26.50 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.4" / 340 mm   7.09" / 180 mm      11.0" / 280 mm
   2nd:   1.97" / 50 mm   0.98" / 25 mm      3.94" / 100 mm
   3rd:   0.20" / 5 mm   0.20" / 5 mm      0.98" / 25 mm
   5th:   0.20" / 5 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 3.94" / 100 mm
   Forecastle: 1.38" / 35 mm  Quarter deck: 1.38" / 35 mm

   - Conning towers: Forward 9.45" / 240 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 136,000 shp / 101,456 Kw = 30.11 kts
   Range 7,500nm at 14.00 kts
   Bunker at max displacement = 3,050 tons

Complement:
   1,186 - 1,543

Cost:
   £11.374 million / $45.497 million

Distribution of weights at normal displacement:
   Armament: 2,033 tons, 6.4 %
      - Guns: 2,033 tons, 6.4 %
   Armour: 9,163 tons, 28.9 %
      - Belts: 3,250 tons, 10.3 %
      - Torpedo bulkhead: 809 tons, 2.6 %
      - Armament: 1,785 tons, 5.6 %
      - Armour Deck: 3,115 tons, 9.8 %
      - Conning Tower: 204 tons, 0.6 %
   Machinery: 4,067 tons, 12.8 %
   Hull, fittings & equipment: 11,847 tons, 37.4 %
   Fuel, ammunition & stores: 3,290 tons, 10.4 %
   Miscellaneous weights: 1,270 tons, 4.0 %
      - Hull below water: 460 tons
      - Hull above water: 235 tons
      - On freeboard deck: 475 tons
      - Above deck: 100 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     44,661 lbs / 20,258 Kg = 37.2 x 13.4 " / 340 mm shells or 6.8 torpedoes
   Stability (Unstable if below 1.00): 1.19
   Metacentric height 7.1 ft / 2.2 m
   Roll period: 16.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 67 %
         - Recoil effect (Restricted arc if above 1.00): 0.51
   Seaboat quality  (Average = 1.00): 1.11

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a round stern
   Block coefficient (normal/deep): 0.536 / 0.541
   Length to Beam Ratio: 6.77 : 1
   'Natural speed' for length: 26.25 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 61
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 5.97 ft / 1.82 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  28.71 ft / 8.75 m,  28.71 ft / 8.75 m
      - Forward deck:   15.00 %,  28.71 ft / 8.75 m,  28.71 ft / 8.75 m
      - Aft deck:   50.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Quarter deck:   15.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Average freeboard:      22.84 ft / 6.96 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 88.2 %
      - Above water (accommodation/working, high = better): 168.7 %
   Waterplane Area: 48,254 Square feet or 4,483 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 186 lbs/sq ft or 910 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.67
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room

Thoughts?

[Kaiser Kirk]

Overall - Quad...or 4-gun ?  Quad will have some ROF reductions, which makes the extra for 4-Gun worthwhile. 

I do wonder why the belt is 230 inclined but the barbette (curved) is 280 and the faces are 340mm.

Decks are heavy enough that penetration by shell or bomb is very unlikely.
Belt will not be adequate against capital ship guns, but very good against anything less.

The "B" model with the 12x 9", I don't see that as a good choice.
Both the "A" and "C" work.

Parthia would interpret them as responses to our 1928 Dahae class, which we now think we could have made better....but it's not bad. These were our most recent "Heavy Armored Cruisers", while the building Xiyon class are [/i]'Light Armored Cruisers'[/i]    Comparatively, the gunpower is about the same, 1 knot less, somewhat more armor. 4,000 tons lighter.

[snip]

Having noodled on it for a while, A is definitely the preferred option. I'll give it a polishing pass for comment.

[Kaiser Kirk]

I would set the bow slightly higher to avoid that wet forward.
You have 5.75m. I figure bores are about 1.5m off the deck, so the bow could flare as much as 7.25m
without effecting dead ahead fire.