Imperial Roman Navy, 1909 and Earlier Preliminary Pass

[snip]

Since you nerds didn't like my single thread idea, Im going to follow the rest of you down here.

[snip]

Emperor Trajan VIII, Roman Imperial Republic Battleship laid down 1905

Displacement:
   15,500 t light; 16,451 t standard; 17,434 t normal; 18,220 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (459.32 ft / 459.32 ft) x 82.02 ft x (24.61 / 25.55 ft)
   (140.00 m / 140.00 m) x 25.00 m  x (7.50 / 7.79 m)

Armament:
      6 - 13.39" / 340 mm 40.0 cal guns - 1,157.43lbs / 525.00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1905 Model
     3 x Twin mounts on centreline, evenly spread
      16 - 5.51" / 140 mm 45.0 cal guns - 88.18lbs / 40.00kg shells, 250 per gun
     Breech loading guns in casemate mounts, 1905 Model
     16 x Single mounts on sides, evenly spread
      8 - 2.95" / 75.0 mm 50.0 cal guns - 13.23lbs / 6.00kg shells, 350 per gun
     Quick firing guns in casemate mounts, 1905 Model
     8 x Single mounts on sides, evenly spread
      Weight of broadside 8,461 lbs / 3,838 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   298.56 ft / 91.00 m   18.04 ft / 5.50 m
   Ends:   3.94" / 100 mm   160.73 ft / 48.99 m   9.84 ft / 3.00 m
   Upper:   4.72" / 120 mm   298.56 ft / 91.00 m   9.02 ft / 2.75 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.4" / 340 mm   7.09" / 180 mm      11.0" / 280 mm
   2nd:   4.72" / 120 mm   1.97" / 50 mm      1.97" / 50 mm
   3rd:   1.97" / 50 mm   0.98" / 25 mm      0.98" / 25 mm

   - Armoured deck - single deck:
   For and Aft decks: 2.95" / 75 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

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

Machinery:
   Coal and oil fired boilers, reciprocating cruising steam engines and steam turbines
   Direct drive, 4 shafts, 16,000 ihp / 11,936 Kw = 18.17 kts
   Range 5,500nm at 10.00 kts
   Bunker at max displacement = 1,769 tons (90% coal)

Complement:
   758 - 986

Cost:
   £1.419 million / $5.676 million

Distribution of weights at normal displacement:
   Armament: 1,282 tons, 7.4 %
      - Guns: 1,282 tons, 7.4 %
   Armour: 6,811 tons, 39.1 %
      - Belts: 3,665 tons, 21.0 %
      - Armament: 1,602 tons, 9.2 %
      - Armour Deck: 1,401 tons, 8.0 %
      - Conning Tower: 143 tons, 0.8 %
   Machinery: 1,676 tons, 9.6 %
   Hull, fittings & equipment: 5,516 tons, 31.6 %
   Fuel, ammunition & stores: 1,934 tons, 11.1 %
   Miscellaneous weights: 215 tons, 1.2 %
      - Hull below water: 25 tons
      - Hull above water: 60 tons
      - On freeboard deck: 130 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     30,254 lbs / 13,723 Kg = 25.2 x 13.4 " / 340 mm shells or 3.4 torpedoes
   Stability (Unstable if below 1.00): 1.39
   Metacentric height 6.6 ft / 2.0 m
   Roll period: 13.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.58
   Seaboat quality  (Average = 1.00): 1.93

Hull form characteristics:
   Hull has low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.658 / 0.662
   Length to Beam Ratio: 5.60 : 1
   'Natural speed' for length: 21.43 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 36
   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 %,  21.33 ft / 6.50 m,  20.51 ft / 6.25 m
      - Forward deck:   30.00 %,  20.51 ft / 6.25 m,  20.51 ft / 6.25 m
      - Aft deck:   35.00 %,  20.51 ft / 6.25 m,  20.51 ft / 6.25 m
      - Quarter deck:   15.00 %,  11.48 ft / 3.50 m,  11.48 ft / 3.50 m
      - Average freeboard:      19.22 ft / 5.86 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 66.9 %
      - Above water (accommodation/working, high = better): 149.8 %
   Waterplane Area: 29,080 Square feet or 2,702 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 149 lbs/sq ft or 727 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.91
      - Longitudinal: 2.22
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[snip]

Scout D, Roman Imperial Republic Cruiser laid down 1905

Displacement:
   2,556 t light; 2,646 t standard; 3,099 t normal; 3,461 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (367.45 ft / 367.45 ft) x 37.73 ft x (13.94 / 15.24 ft)
   (112.00 m / 112.00 m) x 11.50 m  x (4.25 / 4.65 m)

Armament:
      4 - 5.51" / 140 mm 45.0 cal guns - 84.44lbs / 38.30kg shells, 150 per gun
     Breech loading guns in deck mounts, 1905 Model
     2 x Single mounts on centreline ends, evenly spread
     2 x Single mounts on sides, forward deck centre
      Weight of broadside 338 lbs / 153 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   0.59" / 15 mm   367.45 ft / 112.00 m   6.56 ft / 2.00 m
     Main Belt covers 154 % of normal length
     Main belt does not fully cover magazines and engineering spaces

   - Protected deck - single deck:
   For and Aft decks: 0.59" / 15 mm
   Forecastle: 0.20" / 5 mm  Quarter deck: 0.20" / 5 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 19,992 shp / 14,914 Kw = 25.33 kts
   Range 6,000nm at 10.00 kts
   Bunker at max displacement = 815 tons (90% coal)

Complement:
   206 - 269

Cost:
   £0.324 million / $1.294 million

Distribution of weights at normal displacement:
   Armament: 51 tons, 1.6 %
      - Guns: 51 tons, 1.6 %
   Armour: 147 tons, 4.7 %
      - Belts: 53 tons, 1.7 %
      - Armour Deck: 94 tons, 3.0 %
   Machinery: 1,558 tons, 50.3 %
   Hull, fittings & equipment: 800 tons, 25.8 %
   Fuel, ammunition & stores: 543 tons, 17.5 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1,361 lbs / 617 Kg = 16.3 x 5.5 " / 140 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.59
   Metacentric height 2.5 ft / 0.8 m
   Roll period: 10.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.13
   Seaboat quality  (Average = 1.00): 1.17

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.561 / 0.573
   Length to Beam Ratio: 9.74 : 1
   'Natural speed' for length: 19.17 kts
   Power going to wave formation at top speed: 58 %
   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 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Forward deck:   30.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Aft deck:   35.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Quarter deck:   15.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Average freeboard:      13.12 ft / 4.00 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 167.8 %
      - Above water (accommodation/working, high = better): 118.6 %
   Waterplane Area: 9,776 Square feet or 908 Square metres
   Displacement factor (Displacement / loading): 86 %
   Structure weight / hull surface area: 51 lbs/sq ft or 250 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.86
      - Longitudinal: 1.29
      - Overall: 0.90
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

[snip]

Dreadnaught A, Roman Imperial Republic Battleship laid down 1907

Displacement:
   18,500 t light; 19,641 t standard; 20,855 t normal; 21,827 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (524.93 ft / 524.93 ft) x 82.02 ft x (24.61 / 25.60 ft)
   (160.00 m / 160.00 m) x 25.00 m  x (7.50 / 7.80 m)

Armament:
      8 - 13.39" / 340 mm 40.0 cal guns - 1,157.43lbs / 525.00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1907 Model
     4 x Twin mounts on centreline, evenly spread
      16 - 5.51" / 140 mm 45.0 cal guns - 84.44lbs / 38.30kg shells, 250 per gun
     Breech loading guns in casemate mounts, 1907 Model
     16 x Single mounts on sides, evenly spread
      8 - 2.95" / 75.0 mm 50.0 cal guns - 13.62lbs / 6.18kg shells, 350 per gun
     Quick firing guns in casemate mounts, 1907 Model
     8 x Single mounts on sides, evenly spread
      Weight of broadside 10,719 lbs / 4,862 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   341.21 ft / 104.00 m   18.04 ft / 5.50 m
   Ends:   3.94" / 100 mm   183.69 ft / 55.99 m   9.84 ft / 3.00 m
   Upper:   4.72" / 120 mm   341.21 ft / 104.00 m   9.02 ft / 2.75 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.4" / 340 mm   7.09" / 180 mm      11.0" / 280 mm
   2nd:   4.72" / 120 mm   1.97" / 50 mm      1.97" / 50 mm
   3rd:   1.97" / 50 mm   0.98" / 25 mm      0.98" / 25 mm

   - Armoured deck - single deck:
   For and Aft decks: 2.95" / 75 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

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

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 30,000 shp / 22,380 Kw = 21.02 kts
   Range 5,500nm at 10.00 kts
   Bunker at max displacement = 2,186 tons (90% coal)

Complement:
   867 - 1,128

Cost:
   £1.740 million / $6.960 million

Distribution of weights at normal displacement:
   Armament: 1,634 tons, 7.8 %
      - Guns: 1,634 tons, 7.8 %
   Armour: 7,977 tons, 38.2 %
      - Belts: 4,113 tons, 19.7 %
      - Armament: 2,059 tons, 9.9 %
      - Armour Deck: 1,645 tons, 7.9 %
      - Conning Tower: 161 tons, 0.8 %
   Machinery: 1,856 tons, 8.9 %
   Hull, fittings & equipment: 6,738 tons, 32.3 %
   Fuel, ammunition & stores: 2,355 tons, 11.3 %
   Miscellaneous weights: 295 tons, 1.4 %
      - Hull below water: 25 tons
      - Hull above water: 100 tons
      - On freeboard deck: 170 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     33,824 lbs / 15,342 Kg = 28.2 x 13.4 " / 340 mm shells or 3.5 torpedoes
   Stability (Unstable if below 1.00): 1.24
   Metacentric height 5.5 ft / 1.7 m
   Roll period: 14.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.80
   Seaboat quality  (Average = 1.00): 1.52

Hull form characteristics:
   Hull has low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.689 / 0.693
   Length to Beam Ratio: 6.40 : 1
   'Natural speed' for length: 22.91 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 46
   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 %,  21.33 ft / 6.50 m,  20.51 ft / 6.25 m
      - Forward deck:   30.00 %,  20.51 ft / 6.25 m,  20.51 ft / 6.25 m
      - Aft deck:   35.00 %,  20.51 ft / 6.25 m,  20.51 ft / 6.25 m
      - Quarter deck:   15.00 %,  11.48 ft / 3.50 m,  11.48 ft / 3.50 m
      - Average freeboard:      19.22 ft / 5.86 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 67.2 %
      - Above water (accommodation/working, high = better): 153.9 %
   Waterplane Area: 34,172 Square feet or 3,175 Square metres
   Displacement factor (Displacement / loading): 105 %
   Structure weight / hull surface area: 156 lbs/sq ft or 762 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.72
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[Walter]

Since you nerds didn't like my single thread idea

I would think that if all ships were to be dumped into one thread, it would become rather messy as you would have many different ships of many different navies in that thread making it much easier to miss certain designs and potential simming errors.

Looking at the BB designs, the Romans like bigger gun and tend to go for lighter CT armor compared to the belt and turret armor.

Only issue I see is that with the cruiser, you gave it the name "Scout D" probably because it is going to be a scout cruiser. I think it would not be a bad idea to have a little bit of miscellaneous weights on the ship for the wireless radios so it can report its findings to the main fleet before it is going to be shot full of holes as that rather thin armor isn't going to do very much.

[Kaiser Kirk]

On the battleships, in my opinion the beam is too narrow.

I say this because Orion, Iron Duke, Erin, Lion, Tiger, Courbet, Provence had similar main gun batteries, and the lowest beam was Provence at 26.9m, the rest were all 27+.

Now many of these did have torpedo bulkheads, and yours does not, but the bulkheads they had were discontinous and protected the magizines / and or machinery- basically flash protection- not the main battery, so a 27+m beam should be valid for reference purposes.

BC :  From what I recall of various lists of historic BCs, block coefficient is a fair bit high on Trajan VIII and remarkably high on Dreadnaught A-it's apparently an armored tanker. 

Gun layout : You have "evenly spread" instead of fore/aft, do you intend an A B  Q    X  layout?  Or are you trying for perhaps HMS Tiger ?

On belt armor, I guess it's a matter of taste. Your layout isn't far off of something like USS Texas, but very tall. I prefer either thicker belt or a protected deck behind the belt, like the European ships :)

[Walter]

With beam, there are of course vessels like Dreadnought (82 ft), Invincible class (78.5 feet), Bellerophon class (82.5 feet) and St. Vincent class (84 feet) which had the twin 12" turrets side by side on those beams... well... Invincible's are almost side by side... and those side by side guns are located where the ship is pretty much widest.

Another thing might be that the higher BC could be a bit to compensate that, meaning that where A and Y turrets are on the Trajan VIII, the hull could be just as wide as on the vessels you mentioned (though that is just speculation).

[Jefgte]

Recoil (0.80) on the 18500t BB is high.
I think that the hull is too small (high BC) to fire a full boardside without stress.
The life of the BB could be shorted by mechanical strain.


IMO, it's better to begin SS early  - 1890 & finish in 1909 to have a personnal styl & developpement year after year.

=> I think that the older ships used in our restart were LD in 1890.
=> It could be interresting to have the global tonnage allocated for each coutry for the restart to make a coherent & regular building plan.

Jef  ;)

[snip]

To hit on a couple things.

On the battleships, in my opinion the beam is too narrow.

I say this because Orion, Iron Duke, Erin, Lion, Tiger, Courbet, Provence had similar main gun batteries, and the lowest beam was Provence at 26.9m, the rest were all 27+.

Now many of these did have torpedo bulkheads, and yours does not, but the bulkheads they had were discontinous and protected the magizines / and or machinery- basically flash protection- not the main battery, so a 27+m beam should be valid for reference purposes.

BC :  From what I recall of various lists of historic BCs, block coefficient is a fair bit high on Trajan VIII and remarkably high on Dreadnaught A-it's apparently an armored tanker. 

With beam, there are of course vessels like Dreadnought (82 ft), Invincible class (78.5 feet), Bellerophon class (82.5 feet) and St. Vincent class (84 feet) which had the twin 12" turrets side by side on those beams... well... Invincible's are almost side by side... and those side by side guns are located where the ship is pretty much widest.

Another thing might be that the higher BC could be a bit to compensate that, meaning that where A and Y turrets are on the Trajan VIII, the hull could be just as wide as on the vessels you mentioned (though that is just speculation).

The lower beam high BC is something I intended to function as Walter said. Since those are extremes I will try pushing the beam out a bit and see what happens.

Gun layout : You have "evenly spread" instead of fore/aft, do you intend an A B  Q    X  layout?  Or are you trying for perhaps HMS Tiger ?

Think Gangut style.

On belt armor, I guess it's a matter of taste. Your layout isn't far off of something like USS Texas, but very tall. I prefer either thicker belt or a protected deck behind the belt, like the European ships :)

Always been a fan of more coverage myself.

Looking at the BB designs, the Romans like bigger gun and tend to go for lighter CT armor compared to the belt and turret armor.

What can I say, big booms best booms.

Only issue I see is that with the cruiser, you gave it the name "Scout D" probably because it is going to be a scout cruiser. I think it would not be a bad idea to have a little bit of miscellaneous weights on the ship for the wireless radios so it can report its findings to the main fleet before it is going to be shot full of holes as that rather thin armor isn't going to do very much.

I cant say Im at a happy place with that design, so ya it needs some editing.

Recoil (0.80) on the 18500t BB is high.
I think that the hull is too small (high BC) to fire a full boardside without stress.
The life of the BB could be shorted by mechanical strain.

While its on the high side, I dont think its so high as to cause lots of great strain.

IMO, it's better to begin SS early  - 1890 & finish in 1909 to have a personnal style & developpement year after year

Im taking a slightly different approach. There are a few "flavor" bits I want to hit at various points in time. (eg, AQY with 340mm guns) Once I get those nailed down, I can branch out from there to show how it is I got there and where I went from it.

=> It could be interresting to have the global tonnage allocated for each coutry for the restart to make a coherent & regular building plan.

I thought I had posted that document, turns out I had not. its now up.

[snip]

Revised to 26.5m beam

Dreadnaught A, Roman Imperial Republic Battleship laid down 1907

Displacement:
   18,500 t light; 19,640 t standard; 20,853 t normal; 21,823 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (524.93 ft / 524.93 ft) x 86.94 ft x (24.61 / 25.58 ft)
   (160.00 m / 160.00 m) x 26.50 m  x (7.50 / 7.80 m)

Armament:
      8 - 13.39" / 340 mm 40.0 cal guns - 1,157.43lbs / 525.00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1907 Model
     4 x Twin mounts on centreline, evenly spread
      16 - 5.51" / 140 mm 45.0 cal guns - 84.44lbs / 38.30kg shells, 250 per gun
     Breech loading guns in casemate mounts, 1907 Model
     16 x Single mounts on sides, evenly spread
      8 - 2.95" / 75.0 mm 50.0 cal guns - 13.62lbs / 6.18kg shells, 350 per gun
     Quick firing guns in casemate mounts, 1907 Model
     8 x Single mounts on sides, evenly spread
      Weight of broadside 10,719 lbs / 4,862 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   341.21 ft / 104.00 m   18.04 ft / 5.50 m
   Ends:   2.95" / 75 mm   183.69 ft / 55.99 m   9.84 ft / 3.00 m
   Upper:   3.94" / 100 mm   341.21 ft / 104.00 m   9.02 ft / 2.75 m
     Main Belt covers 100 % of normal length

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

   - Armoured deck - single deck:
   For and Aft decks: 2.95" / 75 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

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

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 30,000 shp / 22,380 Kw = 21.04 kts
   Range 5,500nm at 10.00 kts
   Bunker at max displacement = 2,183 tons (90% coal)

Complement:
   866 - 1,127

Cost:
   £1.740 million / $6.960 million

Distribution of weights at normal displacement:
   Armament: 1,634 tons, 7.8 %
      - Guns: 1,634 tons, 7.8 %
   Armour: 7,844 tons, 37.6 %
      - Belts: 3,962 tons, 19.0 %
      - Armament: 2,036 tons, 9.8 %
      - Armour Deck: 1,684 tons, 8.1 %
      - Conning Tower: 161 tons, 0.8 %
   Machinery: 1,856 tons, 8.9 %
   Hull, fittings & equipment: 6,946 tons, 33.3 %
   Fuel, ammunition & stores: 2,353 tons, 11.3 %
   Miscellaneous weights: 220 tons, 1.1 %
      - Hull below water: 10 tons
      - Hull above water: 50 tons
      - On freeboard deck: 160 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     35,039 lbs / 15,893 Kg = 29.2 x 13.4 " / 340 mm shells or 3.7 torpedoes
   Stability (Unstable if below 1.00): 1.30
   Metacentric height 6.4 ft / 2.0 m
   Roll period: 14.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.64
   Seaboat quality  (Average = 1.00): 1.52

Hull form characteristics:
   Hull has low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.650 / 0.654
   Length to Beam Ratio: 6.04 : 1
   'Natural speed' for length: 22.91 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 46
   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 %,  21.33 ft / 6.50 m,  20.51 ft / 6.25 m
      - Forward deck:   30.00 %,  20.51 ft / 6.25 m,  20.51 ft / 6.25 m
      - Aft deck:   35.00 %,  20.51 ft / 6.25 m,  20.51 ft / 6.25 m
      - Quarter deck:   15.00 %,  11.48 ft / 3.50 m,  11.48 ft / 3.50 m
      - Average freeboard:      19.22 ft / 5.86 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 66.9 %
      - Above water (accommodation/working, high = better): 157.7 %
   Waterplane Area: 34,961 Square feet or 3,248 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 159 lbs/sq ft or 777 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.93
      - Longitudinal: 1.78
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[snip]

This is intended to be the oldest capital ship the IRN maintains on the lists in 1910. Representing the first full departure from pure coastal defense ships, this class is designed to be an bit strange. Showing here is the preference for larger guns than contemporaries.

Pre-Dread A, Imperial Roman Republic Battleship laid down 1890

Displacement:
   11,000 t light; 11,454 t standard; 12,208 t normal; 12,811 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (354.33 ft / 354.33 ft) x 75.46 ft x (26.25 / 27.32 ft)
   (108.00 m / 108.00 m) x 23.00 m  x (8.00 / 8.33 m)

Armament:
      2 - 13.39" / 340 mm 30.0 cal guns - 1,102.31lbs / 500.00kg shells, 60 per gun
     Breech loading guns in turret on barbette mounts, 1890 Model
     2 x Single mounts on centreline ends, evenly spread
      16 - 5.51" / 140 mm 35.0 cal guns - 79.37lbs / 36.00kg shells, 175 per gun
     Breech loading guns in casemate mounts, 1890 Model
     16 x Single mounts on sides, evenly spread
      8 hull mounts in casemates- Limited use in heavy seas
      12 - 2.95" / 75.0 mm 45.0 cal guns - 12.98lbs / 5.89kg shells, 150 per gun
     Breech loading guns in deck mounts, 1890 Model
     12 x Single mounts on sides, evenly spread
      Weight of broadside 3,630 lbs / 1,647 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   15.0" / 380 mm   204.17 ft / 62.23 m   10.43 ft / 3.18 m
   Ends:   7.87" / 200 mm   150.13 ft / 45.76 m   10.43 ft / 3.18 m
   Upper:   3.94" / 100 mm   204.17 ft / 62.23 m   8.01 ft / 2.44 m
     Main Belt covers 89 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 380 mm   9.84" / 250 mm      15.0" / 380 mm
   2nd:   3.94" / 100 mm   0.98" / 25 mm      3.94" / 100 mm
   3rd:   0.59" / 15 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 1.97" / 50 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

   - Conning towers: Forward 14.96" / 380 mm, Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 14,000 ihp / 10,444 Kw = 18.19 kts
   Range 4,000nm at 10.00 kts
   Bunker at max displacement = 1,358 tons (100% coal)

Complement:
   579 - 754

Cost:
   £0.957 million / $3.829 million

Distribution of weights at normal displacement:
   Armament: 484 tons, 4.0 %
      - Guns: 484 tons, 4.0 %
   Armour: 4,073 tons, 33.4 %
      - Belts: 2,292 tons, 18.8 %
      - Armament: 977 tons, 8.0 %
      - Armour Deck: 634 tons, 5.2 %
      - Conning Tower: 171 tons, 1.4 %
   Machinery: 2,718 tons, 22.3 %
   Hull, fittings & equipment: 3,549 tons, 29.1 %
   Fuel, ammunition & stores: 1,208 tons, 9.9 %
   Miscellaneous weights: 175 tons, 1.4 %
      - Hull below water: 20 tons
      - Hull above water: 55 tons
      - On freeboard deck: 100 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     15,398 lbs / 6,984 Kg = 12.8 x 13.4 " / 340 mm shells or 2.0 torpedoes
   Stability (Unstable if below 1.00): 1.43
   Metacentric height 6.1 ft / 1.9 m
   Roll period: 12.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.31
   Seaboat quality  (Average = 1.00): 1.44

Hull form characteristics:
   Hull has low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.609 / 0.614
   Length to Beam Ratio: 4.70 : 1
   'Natural speed' for length: 18.82 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 49
   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:   21.19 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Forward deck:   30.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Aft deck:   27.62 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Quarter deck:   21.19 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Average freeboard:      16.95 ft / 5.17 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 88.4 %
      - Above water (accommodation/working, high = better): 122.4 %
   Waterplane Area: 19,718 Square feet or 1,832 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 134 lbs/sq ft or 652 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.89
      - Longitudinal: 2.86
      - 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

[snip]

And to flesh out the intended remaining Pre-Dreads. Slow development in the direction of the Trajan VIII semi-dreads with improving armor scheme and range as the ships get more modern.

Pre-Dread B, Imperial Roman Republic Battleship laid down 1893

Displacement:
   13,448 t light; 14,082 t standard; 14,994 t normal; 15,725 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (393.70 ft / 393.70 ft) x 78.74 ft x (26.25 / 27.33 ft)
   (120.00 m / 120.00 m) x 24.00 m  x (8.00 / 8.33 m)

Armament:
      4 - 13.39" / 340 mm 35.0 cal guns - 1,124.36lbs / 510.00kg shells, 70 per gun
     Breech loading guns in turret on barbette mounts, 1893 Model
     2 x Twin mounts on centreline ends, evenly spread
      4 - 8.27" / 210 mm 40.0 cal guns - 264.55lbs / 120.00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1893 Model
     4 x Single mounts on sides, evenly spread
      10 - 5.51" / 140 mm 40.0 cal guns - 80.25lbs / 36.40kg shells, 175 per gun
     Breech loading guns in casemate mounts, 1893 Model
     10 x Single mounts on sides, evenly spread
      10 hull mounts in casemates- Limited use in heavy seas
      12 - 2.95" / 75.0 mm 45.0 cal guns - 12.99lbs / 5.89kg shells, 250 per gun
     Breech loading guns in deck mounts, 1893 Model
     12 x Single mounts on sides, evenly spread
      6 raised mounts
      Weight of broadside 6,514 lbs / 2,955 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   231.73 ft / 70.63 m   10.66 ft / 3.25 m
   Ends:   5.91" / 150 mm   161.94 ft / 49.36 m   10.66 ft / 3.25 m
   Upper:   3.94" / 100 mm   231.73 ft / 70.63 m   8.01 ft / 2.44 m
     Main Belt covers 91 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 380 mm   9.84" / 250 mm      15.0" / 380 mm
   2nd:   5.91" / 150 mm   3.94" / 100 mm      5.91" / 150 mm
   3rd:   3.94" / 100 mm   0.98" / 25 mm      3.94" / 100 mm
   4th:   0.59" / 15 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 1.97" / 50 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

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

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 14,995 ihp / 11,187 Kw = 18.07 kts
   Range 4,500nm at 10.00 kts
   Bunker at max displacement = 1,643 tons (100% coal)

Complement:
   676 - 880

Cost:
   £1.325 million / $5.300 million

Distribution of weights at normal displacement:
   Armament: 1,005 tons, 6.7 %
      - Guns: 1,005 tons, 6.7 %
   Armour: 4,632 tons, 30.9 %
      - Belts: 2,095 tons, 14.0 %
      - Armament: 1,644 tons, 11.0 %
      - Armour Deck: 764 tons, 5.1 %
      - Conning Tower: 129 tons, 0.9 %
   Machinery: 2,829 tons, 18.9 %
   Hull, fittings & equipment: 4,756 tons, 31.7 %
   Fuel, ammunition & stores: 1,546 tons, 10.3 %
   Miscellaneous weights: 225 tons, 1.5 %
      - Hull below water: 25 tons
      - Hull above water: 100 tons
      - On freeboard deck: 100 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     17,603 lbs / 7,984 Kg = 14.7 x 13.4 " / 340 mm shells or 2.1 torpedoes
   Stability (Unstable if below 1.00): 1.32
   Metacentric height 5.7 ft / 1.7 m
   Roll period: 13.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.53
   Seaboat quality  (Average = 1.00): 1.47

Hull form characteristics:
   Hull has low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.645 / 0.650
   Length to Beam Ratio: 5.00 : 1
   'Natural speed' for length: 19.84 kts
   Power going to wave formation at top speed: 51 %
   Trim (Max stability = 0, Max steadiness = 100): 48
   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:   20.57 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Forward deck:   30.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Aft deck:   28.86 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Quarter deck:   20.57 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Average freeboard:      17.01 ft / 5.18 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 90.4 %
      - Above water (accommodation/working, high = better): 125.7 %
   Waterplane Area: 23,639 Square feet or 2,196 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 157 lbs/sq ft or 765 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.90
      - Longitudinal: 2.54
      - 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

Pre-Dread C, Imperial Roman Republic Battleship laid down 1897

Displacement:
   14,455 t light; 15,108 t standard; 16,000 t normal; 16,714 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (426.51 ft / 426.51 ft) x 78.74 ft x (26.25 / 27.23 ft)
   (130.00 m / 130.00 m) x 24.00 m  x (8.00 / 8.30 m)

Armament:
      4 - 13.39" / 340 mm 35.0 cal guns - 1,124.36lbs / 510.00kg shells, 70 per gun
     Breech loading guns in turret on barbette mounts, 1897 Model
     2 x Twin mounts on centreline ends, evenly spread
      4 - 8.27" / 210 mm 40.0 cal guns - 264.55lbs / 120.00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1897 Model
     4 x Single mounts on sides, evenly spread
      10 - 5.51" / 140 mm 40.0 cal guns - 79.37lbs / 36.00kg shells, 175 per gun
     Quick firing guns in casemate mounts, 1897 Model
     10 x Single mounts on sides, evenly spread
      10 hull mounts in casemates- Limited use in heavy seas
      12 - 2.95" / 75.0 mm 45.0 cal guns - 12.98lbs / 5.89kg shells, 250 per gun
     Quick firing guns in deck mounts, 1897 Model
     12 x Single mounts on sides, evenly spread
      6 raised mounts
      Weight of broadside 6,505 lbs / 2,951 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   247.38 ft / 75.40 m   18.04 ft / 5.50 m
   Ends:   4.72" / 120 mm   179.10 ft / 54.59 m   9.84 ft / 3.00 m
   Upper:   3.94" / 100 mm   247.38 ft / 75.40 m   9.02 ft / 2.75 m
     Main Belt covers 89 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 380 mm   9.84" / 250 mm      15.0" / 380 mm
   2nd:   5.91" / 150 mm   3.94" / 100 mm      5.91" / 150 mm
   3rd:   3.94" / 100 mm   0.98" / 25 mm      3.94" / 100 mm
   4th:   0.59" / 15 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.36" / 60 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

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

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 15,000 ihp / 11,190 Kw = 18.06 kts
   Range 4,500nm at 10.00 kts
   Bunker at max displacement = 1,606 tons (100% coal)

Complement:
   710 - 924

Cost:
   £1.308 million / $5.234 million

Distribution of weights at normal displacement:
   Armament: 1,024 tons, 6.4 %
      - Guns: 1,024 tons, 6.4 %
   Armour: 5,905 tons, 36.9 %
      - Belts: 3,170 tons, 19.8 %
      - Armament: 1,644 tons, 10.3 %
      - Armour Deck: 956 tons, 6.0 %
      - Conning Tower: 135 tons, 0.8 %
   Machinery: 2,459 tons, 15.4 %
   Hull, fittings & equipment: 4,842 tons, 30.3 %
   Fuel, ammunition & stores: 1,545 tons, 9.7 %
   Miscellaneous weights: 225 tons, 1.4 %
      - Hull below water: 25 tons
      - Hull above water: 100 tons
      - On freeboard deck: 100 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     22,090 lbs / 10,020 Kg = 18.4 x 13.4 " / 340 mm shells or 2.6 torpedoes
   Stability (Unstable if below 1.00): 1.33
   Metacentric height 5.8 ft / 1.8 m
   Roll period: 13.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.51
   Seaboat quality  (Average = 1.00): 1.63

Hull form characteristics:
   Hull has low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.635 / 0.640
   Length to Beam Ratio: 5.42 : 1
   'Natural speed' for length: 20.65 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 43
   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 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Forward deck:   30.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Aft deck:   28.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Quarter deck:   22.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Average freeboard:      16.88 ft / 5.15 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 77.4 %
      - Above water (accommodation/working, high = better): 128.5 %
   Waterplane Area: 25,382 Square feet or 2,358 Square metres
   Displacement factor (Displacement / loading): 104 %
   Structure weight / hull surface area: 149 lbs/sq ft or 726 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 2.26
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Pre-Dread D, Imperial Roman Republic Battleship laid down 1901

Displacement:
   14,340 t light; 14,992 t standard; 16,000 t normal; 16,806 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (426.51 ft / 426.51 ft) x 78.74 ft x (26.25 / 27.36 ft)
   (130.00 m / 130.00 m) x 24.00 m  x (8.00 / 8.34 m)

Armament:
      4 - 13.39" / 340 mm 35.0 cal guns - 1,124.36lbs / 510.00kg shells, 70 per gun
     Breech loading guns in turret on barbette mounts, 1901 Model
     2 x Twin mounts on centreline ends, evenly spread
      4 - 8.27" / 210 mm 40.0 cal guns - 264.55lbs / 120.00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1901 Model
     4 x Single mounts on sides, evenly spread
      10 - 5.51" / 140 mm 40.0 cal guns - 79.37lbs / 36.00kg shells, 175 per gun
     Quick firing guns in casemate mounts, 1901 Model
     10 x Single mounts on sides, evenly spread
      10 hull mounts in casemates- Limited use in heavy seas
      12 - 2.95" / 75.0 mm 45.0 cal guns - 12.98lbs / 5.89kg shells, 250 per gun
     Quick firing guns in deck mounts, 1901 Model
     12 x Single mounts on sides, evenly spread
      6 raised mounts
      Weight of broadside 6,505 lbs / 2,951 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   247.38 ft / 75.40 m   18.04 ft / 5.50 m
   Ends:   4.72" / 120 mm   179.10 ft / 54.59 m   9.84 ft / 3.00 m
   Upper:   3.94" / 100 mm   247.38 ft / 75.40 m   9.02 ft / 2.75 m
     Main Belt covers 89 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 380 mm   9.84" / 250 mm      15.0" / 380 mm
   2nd:   5.91" / 150 mm   3.94" / 100 mm      5.91" / 150 mm
   3rd:   3.94" / 100 mm   0.98" / 25 mm      3.94" / 100 mm
   4th:   0.59" / 15 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.95" / 75 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

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

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 15,000 ihp / 11,190 Kw = 18.06 kts
   Range 5,500nm at 10.00 kts
   Bunker at max displacement = 1,814 tons (100% coal)

Complement:
   710 - 924

Cost:
   £1.283 million / $5.133 million

Distribution of weights at normal displacement:
   Armament: 1,024 tons, 6.4 %
      - Guns: 1,024 tons, 6.4 %
   Armour: 6,115 tons, 38.2 %
      - Belts: 3,169 tons, 19.8 %
      - Armament: 1,644 tons, 10.3 %
      - Armour Deck: 1,166 tons, 7.3 %
      - Conning Tower: 135 tons, 0.8 %
   Machinery: 2,308 tons, 14.4 %
   Hull, fittings & equipment: 4,669 tons, 29.2 %
   Fuel, ammunition & stores: 1,660 tons, 10.4 %
   Miscellaneous weights: 225 tons, 1.4 %
      - Hull below water: 25 tons
      - Hull above water: 100 tons
      - On freeboard deck: 100 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     22,966 lbs / 10,417 Kg = 19.2 x 13.4 " / 340 mm shells or 2.7 torpedoes
   Stability (Unstable if below 1.00): 1.33
   Metacentric height 5.8 ft / 1.8 m
   Roll period: 13.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.51
   Seaboat quality  (Average = 1.00): 1.63

Hull form characteristics:
   Hull has low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.635 / 0.640
   Length to Beam Ratio: 5.42 : 1
   'Natural speed' for length: 20.65 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 43
   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 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Forward deck:   30.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Aft deck:   28.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Quarter deck:   22.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Average freeboard:      16.88 ft / 5.15 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 74.4 %
      - Above water (accommodation/working, high = better): 128.5 %
   Waterplane Area: 25,382 Square feet or 2,358 Square metres
   Displacement factor (Displacement / loading): 104 %
   Structure weight / hull surface area: 144 lbs/sq ft or 702 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.91
      - Longitudinal: 2.26
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[snip]

An alternative design of Dreadnaught A.

Dreadnaught A Design B, Imperial Roman Republic Battleship laid down 1907

Displacement:
   20,500 t light; 21,694 t standard; 22,979 t normal; 24,007 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (541.34 ft / 541.34 ft) x 88.58 ft x (26.25 / 27.24 ft)
   (165.00 m / 165.00 m) x 27.00 m  x (8.00 / 8.30 m)

Armament:
      8 - 13.39" / 340 mm 45.0 cal guns - 1,212.54lbs / 550.00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1907 Model
     4 x Twin mounts on centreline, evenly spread
      16 - 5.51" / 140 mm 45.0 cal guns - 88.18lbs / 40.00kg shells, 250 per gun
     Quick firing guns in casemate mounts, 1907 Model
     16 x Single mounts on sides, evenly spread
      16 hull mounts in casemates- Limited use in heavy seas
      Weight of broadside 11,111 lbs / 5,040 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.6" / 320 mm   351.87 ft / 107.25 m   18.04 ft / 5.50 m
   Ends:   3.94" / 100 mm   189.44 ft / 57.74 m   9.84 ft / 3.00 m
   Upper:   3.94" / 100 mm   351.87 ft / 107.25 m   9.02 ft / 2.75 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      0.59" / 15 mm   351.87 ft / 107.25 m   26.25 ft / 8.00 m
   Beam between torpedo bulkheads 75.46 ft / 23.00 m

   - Hull void:
      0.39" / 10 mm   360.89 ft / 110.00 m   26.25 ft / 8.00 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:   3.94" / 100 mm   0.98" / 25 mm      1.97" / 50 mm

   - Armoured deck - single deck:
   For and Aft decks: 3.54" / 90 mm
   Forecastle: 0.59" / 15 mm  Quarter deck: 0.59" / 15 mm

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

Machinery:
   Coal and oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 32,000 shp / 23,872 Kw = 21.17 kts
   Range 5,500nm at 10.00 kts
   Bunker at max displacement = 2,312 tons (90% coal)

Complement:
   933 - 1,213

Cost:
   £1.961 million / $7.845 million

Distribution of weights at normal displacement:
   Armament: 1,898 tons, 8.3 %
      - Guns: 1,898 tons, 8.3 %
   Armour: 8,765 tons, 38.1 %
      - Belts: 4,357 tons, 19.0 %
      - Torpedo bulkhead: 202 tons, 0.9 %
      - Void: 138 tons, 0.6 %
      - Armament: 1,869 tons, 8.1 %
      - Armour Deck: 2,028 tons, 8.8 %
      - Conning Tower: 171 tons, 0.7 %
   Machinery: 1,980 tons, 8.6 %
   Hull, fittings & equipment: 7,057 tons, 30.7 %
   Fuel, ammunition & stores: 2,479 tons, 10.8 %
   Miscellaneous weights: 800 tons, 3.5 %
      - Hull below water: 500 tons
      - Hull above water: 100 tons
      - On freeboard deck: 200 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     34,586 lbs / 15,688 Kg = 28.8 x 13.4 " / 340 mm shells or 5.0 torpedoes
   Stability (Unstable if below 1.00): 1.30
   Metacentric height 6.7 ft / 2.0 m
   Roll period: 14.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.56
   Seaboat quality  (Average = 1.00): 1.41

Hull form characteristics:
   Hull has low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.639 / 0.643
   Length to Beam Ratio: 6.11 : 1
   'Natural speed' for length: 23.27 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Forward deck:   30.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Aft deck:   35.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Quarter deck:   15.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Average freeboard:      17.51 ft / 5.34 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 82.1 %
      - Above water (accommodation/working, high = better): 140.0 %
   Waterplane Area: 36,357 Square feet or 3,378 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 159 lbs/sq ft or 775 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.53
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

495t Below Deck for Electric Drives
190t On Deck for 1905 Fire Control

[Jefgte]

I have nearly a same project
economical 18000t  "Dreadnough Killer"

posted in sept 2015

https://www.navalism.org/index.php/topic,6860.60.html

Jef  ;)

[Jefgte]

8 - 13.39" / 340 mm 45.0 cal guns - 1,212.54lbs / 550.00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1907 Model
     4 x Twin mounts on centreline, evenly spread

No superfiring ?