Firanji ships 1917-

Started by P3D, July 18, 2010, 01:09:55 PM

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P3D

#30
Quote from: Ithekro on July 21, 2010, 01:46:23 PM
Aside from the lack of a single turret she fits right in with the majority of the country's battleship line (the armor isn't even all that different).  She need a basic refit and no much else.  Perhaps an expansion of her magazine with the conversion to oil.

With a small navy one uses what one has.

Getting the Firenji coast defense ships into a battleline is counterproductive. Fast ships would avoid it, strong ships would take it on without significant damage to themselves. Firanj has 6 (+2) coastal battleships without the VTE cruisers, that's more than enough.
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

P3D

First Firenji attempt to build a larger destroyer. Would the 14cm guns be too much, time would tell.

Firenji DD, laid down 1916

Displacement:
   1,000 t light; 1,046 t standard; 1,186 t normal; 1,298 t full load

Dimensions: Length overall / water x beam x draught
   328.08 ft / 328.08 ft x 27.89 ft x 9.19 ft (normal load)
   100.00 m / 100.00 m x 8.50 m  x 2.80 m

Armament:
      3 - 5.51" / 140 mm guns in single mounts, 83.72lbs / 37.98kg shells, 1916 Model
     Breech loading guns in deck mounts with hoists
     on centreline ends, majority forward, 1 raised mount
      1 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1916 Model
     Breech loading gun in deck mount
     on side amidships
      3 - 0.49" / 12.5 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1916 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 264 lbs / 120 kg
   Shells per gun, main battery: 150
   6 - 23.6" / 600 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.39" / 10 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 25,235 shp / 18,825 Kw = 31.00 kts
   Range 5,000nm at 12.00 kts
   Bunker at max displacement = 252 tons

Complement:
   100 - 131

Cost:
   £0.237 million / $0.949 million

Distribution of weights at normal displacement:
   Armament: 33 tons, 2.8 %
   Armour: 4 tons, 0.3 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 4 tons, 0.3 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 587 tons, 49.5 %
   Hull, fittings & equipment: 326 tons, 27.5 %
   Fuel, ammunition & stores: 186 tons, 15.7 %
   Miscellaneous weights: 50 tons, 4.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     257 lbs / 117 Kg = 3.1 x 5.5 " / 140 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.18
   Metacentric height 1.0 ft / 0.3 m
   Roll period: 11.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.70
   Seaboat quality  (Average = 1.00): 0.77

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.494
   Length to Beam Ratio: 11.76 : 1
   'Natural speed' for length: 18.11 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 65
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18.04 ft / 5.50 m
      - Forecastle (15 %):   16.40 ft / 5.00 m
      - Mid (35 %):      16.40 ft / 5.00 m (8.20 ft / 2.50 m aft of break)
      - Quarterdeck (15 %):   8.20 ft / 2.50 m
      - Stern:      8.20 ft / 2.50 m
      - Average freeboard:   11.17 ft / 3.41 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 185.6 %
      - Above water (accommodation/working, high = better): 52.1 %
   Waterplane Area: 6,062 Square feet or 563 Square metres
   Displacement factor (Displacement / loading): 54 %
   Structure weight / hull surface area: 30 lbs/sq ft or 145 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.51
      - Longitudinal: 0.98
      - Overall: 0.54
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

P3D

My 2T3x14" fast battleship design got up to 23,000t, as I assigned no misc. weight originally :-[.

Now a Firenji study of a Treatymax battleship, a mere 4 years to finish. Most probably won't happen.

Firanj BB,   laid down 1918 (Engine 1916)

Displacement:
   39,360 t light; 41,275 t standard; 44,289 t normal; 46,700 t full load

Dimensions: Length overall / water x beam x draught
   718.50 ft / 718.50 ft x 111.55 ft x 31.17 ft (normal load)
   219.00 m / 219.00 m x 34.00 m  x 9.50 m

Armament:
      12 - 14.00" / 356 mm guns (4x3 guns), 1,372.00lbs / 622.33kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      20 - 5.51" / 140 mm guns (10x2 guns), 83.72lbs / 37.97kg shells, 1918 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships, 6 raised mounts - superfiring
      4 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1918 Model
     Breech loading guns in deck mounts
     on side, evenly spread
      12 - 0.49" / 12.5 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1918 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 18,191 lbs / 8,251 kg
   Shells per gun, main battery: 100
   16 - 23.6" / 600 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   14.6" / 371 mm   475.72 ft / 145.00 m   13.78 ft / 4.20 m
   Ends:   3.94" / 100 mm   196.85 ft / 60.00 m   13.78 ft / 4.20 m
     45.93 ft / 14.00 m Unarmoured ends
   Upper:   3.94" / 100 mm   118.11 ft / 36.00 m   7.87 ft / 2.40 m
     Main Belt covers 102 % of normal length

   - Torpedo Bulkhead:
      1.97" / 50 mm   475.72 ft / 145.00 m   36.09 ft / 11.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 380 mm   9.06" / 230 mm      13.8" / 350 mm
   2nd:   3.94" / 100 mm   0.98" / 25 mm      1.97" / 50 mm

   - Armour deck: 3.94" / 100 mm, Conning tower: 13.78" / 350 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 128,875 shp / 96,141 Kw = 28.00 kts
   Range 12,000nm at 12.00 kts
   Bunker at max displacement = 5,426 tons

Complement:
   1,526 - 1,984

Cost:
   £7.920 million / $31.679 million

Distribution of weights at normal displacement:
   Armament: 2,274 tons, 5.1 %
   Armour: 14,956 tons, 33.8 %
      - Belts: 4,829 tons, 10.9 %
      - Torpedo bulkhead: 1,250 tons, 2.8 %
      - Armament: 4,153 tons, 9.4 %
      - Armour Deck: 4,352 tons, 9.8 %
      - Conning Tower: 372 tons, 0.8 %
   Machinery: 4,802 tons, 10.8 %
   Hull, fittings & equipment: 16,829 tons, 38.0 %
   Fuel, ammunition & stores: 4,929 tons, 11.1 %
   Miscellaneous weights: 500 tons, 1.1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     52,209 lbs / 23,682 Kg = 38.1 x 14.0 " / 356 mm shells or 7.7 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 7.1 ft / 2.2 m
   Roll period: 17.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 51 %
         - Recoil effect (Restricted arc if above 1.00): 0.56
   Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.621
   Length to Beam Ratio: 6.44 : 1
   'Natural speed' for length: 26.80 kts
   Power going to wave formation at top speed: 54 %
   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 (% = measuring location as a percentage of overall length):
      - Stem:      29.53 ft / 9.00 m
      - Forecastle (20 %):   24.93 ft / 7.60 m
      - Mid (50 %):      21.98 ft / 6.70 m
      - Quarterdeck (15 %):   21.98 ft / 6.70 m
      - Stern:      22.97 ft / 7.00 m
      - Average freeboard:   23.46 ft / 7.15 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 101.4 %
      - Above water (accommodation/working, high = better): 169.0 %
   Waterplane Area: 59,751 Square feet or 5,551 Square metres
   Displacement factor (Displacement / loading): 102 %
   Structure weight / hull surface area: 208 lbs/sq ft or 1,015 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.32
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

P3D

Another Firanji TB design. The intent was to design the smallest LTB with fire control. Bunkerage is enough for a 12-hour 30kts dash. The current state of Firanji infrastructure allowed to delete the 70m-length constraint.

Firanji LTB laid down 1916

Displacement:
   630 t light; 658 t standard; 765 t normal; 851 t full load

Dimensions: Length overall / water x beam x draught
   314.96 ft / 314.96 ft x 26.25 ft x 8.20 ft (normal load)
   96.00 m / 96.00 m x 8.00 m  x 2.50 m

Armament:
      4 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1916 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      4 - 0.49" / 12.5 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1916 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 142 lbs / 64 kg
   Shells per gun, main battery: 150
   6 - 23.6" / 600 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.39" / 10 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 1 shaft, 15,990 shp / 11,929 Kw = 30.00 kts
   Range 5,000nm at 12.00 kts
   Bunker at max displacement = 193 tons

Complement:
   72 - 94

Cost:
   £0.143 million / $0.572 million

Distribution of weights at normal displacement:
   Armament: 18 tons, 2.3 %
   Armour: 4 tons, 0.5 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 4 tons, 0.5 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 360 tons, 47.1 %
   Hull, fittings & equipment: 201 tons, 26.2 %
   Fuel, ammunition & stores: 135 tons, 17.6 %
   Miscellaneous weights: 48 tons, 6.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     198 lbs / 90 Kg = 5.6 x 4.1 " / 105 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.39
   Metacentric height 1.2 ft / 0.4 m
   Roll period: 10.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 47 %
         - Recoil effect (Restricted arc if above 1.00): 0.20
   Seaboat quality  (Average = 1.00): 0.88

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.395
   Length to Beam Ratio: 12.00 : 1
   'Natural speed' for length: 17.75 kts
   Power going to wave formation at top speed: 61 %
   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 (% = measuring location as a percentage of overall length):
      - Stem:      16.40 ft / 5.00 m
      - Forecastle (15 %):   15.42 ft / 4.70 m
      - Mid (31 %):      15.42 ft / 4.70 m (7.22 ft / 2.20 m aft of break)
      - Quarterdeck (15 %):   7.22 ft / 2.20 m
      - Stern:      7.22 ft / 2.20 m
      - Average freeboard:   9.82 ft / 2.99 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 176.6 %
      - Above water (accommodation/working, high = better): 42.4 %
   Waterplane Area: 4,795 Square feet or 446 Square metres
   Displacement factor (Displacement / loading): 55 %
   Structure weight / hull surface area: 23 lbs/sq ft or 113 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 0.82
      - Overall: 0.52
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is extremely poor
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

P3D

#34
Rebuilding the Armored cruiser Thrawn's Hand.
http://www.navalism.org/index.php?topic=4158.msg46250#msg46250

Oil burners are installed in the boilers and bunkers are converted (~100t). Bunkerage is also reduced slightly to free up weight for hull strengthening, ~100t. The end belts are removed. The freed up weight is used to reinforce hull and install a FC mast, long range W/T and radar warning receiver.
(I know it is not exactly following the rebuild rules, but I need to free up like 100t weight to get 1.00 composite strength, otherwise I need to spend 3x on the ship).

The belt warning is due to the misc weight that is actually above the armored deck. New torpedoes.
Actual range with oil firing is around 10000nm@12kts.

Cost:
Machinery conversion: 100t, $0.2
Hull strengthening: 100t, $0.05
Misc. weight (FC, LR W/T, radar warning receiver): 300t, $0.6
Rebuild cost: $1.67

Total: $2.52, 0.5BP

Thrawn's Hand, Firenj Armored Cruiser laid down 1906

Displacement:
   16,610 t light; 17,218 t standard; 19,189 t normal; 20,766 t full load

Dimensions: Length overall / water x beam x draught
   530.00 ft / 530.00 ft x 80.00 ft x 25.00 ft (normal load)
   161.54 m / 161.54 m x 24.38 m  x 7.62 m

Armament:
     4 - 13.00" / 330 mm guns (2x2 guns), 1,098.50lbs / 498.27kg shells, 1906 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
     12 - 5.51" / 140 mm guns in single mounts, 83.64lbs / 37.94kg shells, 1906 Model
     Breech loading guns in casemate mounts
     on side, all amidships
     12 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1906 Model
     Breech loading guns in deck mounts
     on side, evenly spread
     6 - 0.30" / 7.6 mm guns in single mounts, 0.01lbs / 0.00kg shells, 1906 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 5,552 lbs / 2,518 kg
   Shells per gun, main battery: 70
   8 - 21.0" / 533.4 mm above water torpedoes

Armour:
  - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.00" / 229 mm   430.00 ft / 131.06 m   8.00 ft / 2.44 m
   Ends:   7.00" / 178 mm     0.00 ft / 0.00 m   8.00 ft / 2.44 m
     100.00 ft / 30.48 m Unarmoured ends
   Upper:   5.00" / 127 mm   400.00 ft / 121.92 m   8.00 ft / 2.44 m
     Main Belt covers 125 % of normal length
     Main belt does not fully cover magazines and engineering spaces

  - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9.00" / 229 mm   5.00" / 127 mm      7.00" / 178 mm
   2nd:   5.00" / 127 mm         -               -

  - Armour deck: 2.00" / 51 mm, Conning tower: 9.00" / 229 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 4 shafts, 40,360 ihp / 30,109 Kw = 23.15 kts
   Range 7,000nm at 12.00 kts
   Bunker at max displacement = 3,547 tons (100% coal)

Complement:
   814 - 1,059

Cost:
   £1.972 million / $7.886 million

Distribution of weights at normal displacement:
   Armament: 694 tons, 3.6 %
   Armour: 4,070 tons, 21.2 %
      - Belts: 1,965 tons, 10.2 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 782 tons, 4.1 %
      - Armour Deck: 1,184 tons, 6.2 %
      - Conning Tower: 139 tons, 0.7 %
   Machinery: 5,766 tons, 30.0 %
   Hull, fittings & equipment: 5,780 tons, 30.1 %
   Fuel, ammunition & stores: 2,579 tons, 13.4 %
   Miscellaneous weights: 300 tons, 1.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     12,954 lbs / 5,876 Kg = 11.8 x 13.0 " / 330 mm shells or 1.5 torpedoes
   Stability (Unstable if below 1.00): 1.38
   Metacentric height 6.3 ft / 1.9 m
   Roll period: 13.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 66 %
         - Recoil effect (Restricted arc if above 1.00): 0.31
   Seaboat quality  (Average = 1.00): 1.31

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.634
   Length to Beam Ratio: 6.63 : 1
   'Natural speed' for length: 23.02 kts
   Power going to wave formation at top speed: 52 %
   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 (% = measuring location as a percentage of overall length):
      - Stem:      23.00 ft / 7.01 m
      - Forecastle (20 %):   17.00 ft / 5.18 m
      - Mid (50 %):      17.00 ft / 5.18 m
      - Quarterdeck (15 %):   17.00 ft / 5.18 m
      - Stern:      17.00 ft / 5.18 m
      - Average freeboard:   17.48 ft / 5.33 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 125.6 %
      - Above water (accommodation/working, high = better): 110.7 %
   Waterplane Area: 31,994 Square feet or 2,972 Square metres
   Displacement factor (Displacement / loading): 89 %
   Structure weight / hull surface area: 130 lbs/sq ft or 633 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.43
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Good seaboat, rides out heavy weather easily
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

P3D

The lake gunship Aram Shah will also get a rebuild. Luckily it already has adequate misc weight for the FC so there's no need to play too much in the SS. Minelaying will be relegated to smaller ships.

http://www.navalism.org/index.php?topic=3906.msg22321#msg22321
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

TexanCowboy

Just a matter of personal preference, but could you keep the 12.99'' guns instead of the 13'' guns for the battlecruiser? Isn't really that big of a deal, but the slight change in caliber seems to imply that the shells are getting bigger, and therefore the hoists must expand, and all that yadda-yadda.

P3D

Quote from: TexanCowboy on July 29, 2010, 03:04:35 PM
Just a matter of personal preference, but could you keep the 12.99'' guns instead of the 13'' guns for the battlecruiser? Isn't really that big of a deal, but the slight change in caliber seems to imply that the shells are getting bigger, and therefore the hoists must expand, and all that yadda-yadda.

It must be a slightly different inch used in the measurements - i.e. I am too lazy to correct it.
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

Sachmle

Quote from: P3D on July 29, 2010, 02:03:53 PM
The lake gunship Aram Shah will also get a rebuild. Luckily it already has adequate misc weight for the FC so there's no need to play too much in the SS. Minelaying will be relegated to smaller ships.

http://www.navalism.org/index.php?topic=3906.msg22321#msg22321

You gonna rebuild both of them?
"All treaties between great states cease to be binding when they come in conflict with the struggle for existence."
Otto von Bismarck

"Give me a woman who loves beer and I will conquer the world."
Kaiser Wilhelm

"If stupidity were painfull I would be deaf from all the screaming." Sam A. Grim

maddox

If shell hoist in that age got only tolerances of 1mm or less... Forget using them in any kind of seas, or during battle. Those would jab at the slightest instance.

P3D

Quote from: Sachmle on July 29, 2010, 04:31:25 PM
You gonna rebuild both of them?

If you mean the single Aram Shah, and Thrawn's Hand, yes. If you mean the two Aram Shahs, I can't find anything about the second.
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

Sachmle

QuoteNew Lake Cruisers

Aram Shah
(second in class)

Just means no one ever named it.
"All treaties between great states cease to be binding when they come in conflict with the struggle for existence."
Otto von Bismarck

"Give me a woman who loves beer and I will conquer the world."
Kaiser Wilhelm

"If stupidity were painfull I would be deaf from all the screaming." Sam A. Grim

P3D

Dunno how Ithekro meant it, better to ask him. It would be another 2600t of scrap metal that way (another ship class).
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

P3D

A new concept. Why bother with a thick belt at all, just have a below-waterline armored deck, sloped at the edges. perhaps a thin belt against 6" rounds. The idea was inspired on the freak 1920-ish Italian BC design (warships design board), 8x16", no belt armor, 32kts, destroyer machinery.

The belt on the Firanji designs are marginal even now, so why just not get rid of them altogether? Shells are unlikely to hit the belt itself. Armored deck is 3' below waterline, with slight lopes at edges going down another 3'. Main belt is armored 4" against light cruisers. The true AoN version wouldn't even have that. Added 0.5" deck armor and 1" on the turrets overall, and even saved 1400t on the reference design.

Flotation would be conserved by watertight subdivisions above the deck and pumps. So the ship would rather operate close to bases than on long deployments.
Now all the machinery must be squeezed into a slightly smaller room, so this weight saving works better for slow ships with compact machinery. OTOH the weight savings would be more suited for "battlecruisers", which are not designed to slug it out, only to survive the occasional large caliber shell so there's a bit of contradiction. Ideally, the "Hull below water" part should be as low as possible, 90% or so, but that is about impossible, and there's no way to use lightweight machinery, for which the design would be better suited.

Comments?

Firanji economy battleship laid down 1916

Displacement:
   21,622 t light; 22,670 t standard; 24,700 t normal; 26,324 t full load

Dimensions: Length overall / water x beam x draught
   557.00 ft / 557.00 ft x 92.00 ft x 30.00 ft (normal load)
   169.77 m / 169.77 m x 28.04 m  x 9.14 m

Armament:
      6 - 14.00" / 356 mm guns (2x3 guns), 1,372.00lbs / 622.33kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      16 - 5.50" / 140 mm guns (8x2 guns), 83.19lbs / 37.73kg shells, 1916 Model
     Breech loading guns in deck mounts with hoists
     on centreline, evenly spread, 2 raised mounts
[AA goes here]
   Weight of broadside 9,687 lbs / 4,394 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.00" / 102 mm   557.00 ft / 169.77 m   11.00 ft / 3.35 m
   Ends:   Unarmoured
   Upper:   4.00" / 102 mm   200.00 ft / 60.96 m   8.00 ft / 2.44 m
     Main Belt covers 154 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   420.00 ft / 128.02 m   28.00 ft / 8.53 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   16.0" / 406 mm   9.00" / 229 mm      15.0" / 381 mm
   2nd:   2.00" / 51 mm   1.00" / 25 mm      1.00" / 25 mm
   3rd:   2.00" / 51 mm   1.00" / 25 mm      1.00" / 25 mm

   - Armour deck: 4.00" / 102 mm, Conning tower: 14.00" / 356 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 97,722 shp / 72,901 Kw = 28.00 kts
   Range 12,000nm at 12.00 kts
   Bunker at max displacement = 3,654 tons

Complement:
   984 - 1,280

Cost:
   £3.737 million / $14.947 million

Distribution of weights at normal displacement:
   Armament: 1,211 tons, 4.9 %
   Armour: 7,073 tons, 28.6 %
      - Belts: 1,238 tons, 5.0 %
      - Torpedo bulkhead: 870 tons, 3.5 %
      - Armament: 2,032 tons, 8.2 %
      - Armour Deck: 2,677 tons, 10.8 %
      - Conning Tower: 256 tons, 1.0 %
   Machinery: 3,641 tons, 14.7 %
   Hull, fittings & equipment: 9,297 tons, 37.6 %
   Fuel, ammunition & stores: 3,078 tons, 12.5 %
   Miscellaneous weights: 400 tons, 1.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     29,281 lbs / 13,282 Kg = 21.3 x 14.0 " / 356 mm shells or 4.5 torpedoes
   Stability (Unstable if below 1.00): 1.11
   Metacentric height 5.4 ft / 1.6 m
   Roll period: 16.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.55
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.562
   Length to Beam Ratio: 6.05 : 1
   'Natural speed' for length: 23.60 kts
   Power going to wave formation at top speed: 60 %
   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 (% = measuring location as a percentage of overall length):
      - Stem:      28.00 ft / 8.53 m
      - Forecastle (20 %):   24.00 ft / 7.32 m
      - Mid (63 %):      22.00 ft / 6.71 m
      - Quarterdeck (20 %):   22.00 ft / 6.71 m
      - Stern:      22.00 ft / 6.71 m
      - Average freeboard:   23.15 ft / 7.06 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 110.7 %
      - Above water (accommodation/working, high = better): 159.1 %
   Waterplane Area: 36,179 Square feet or 3,361 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 175 lbs/sq ft or 853 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.91
      - Longitudinal: 2.25
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

P3D

The AoN beltless battleship. 3500t savings over the traditional design.

The 35KT treatymax versions have 8x16" and similar protection on 30kts.

Beltless Battleship laid down 1916

Displacement:
   26,459 t light; 27,846 t standard; 30,181 t normal; 32,049 t full load

Dimensions: Length overall / water x beam x draught
   660.00 ft / 660.00 ft x 94.00 ft x 31.00 ft (normal load)
   201.17 m / 201.17 m x 28.65 m  x 9.45 m

Armament:
      9 - 14.00" / 356 mm guns (3x3 guns), 1,372.00lbs / 622.33kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward, 1 raised mount - superfiring
      16 - 5.50" / 140 mm guns (8x2 guns), 83.19lbs / 37.73kg shells, 1916 Model
     Breech loading guns in deck mounts with hoists
     on centreline, evenly spread, 2 raised mounts
      8 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1916 Model
     Quick firing guns in deck mounts with hoists
     on side, evenly spread
      8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.88kg shells, 1916 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread
      16 - 0.30" / 7.7 mm guns in single mounts, 0.01lbs / 0.00kg shells, 1916 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread
   Weight of broadside 13,803 lbs / 6,261 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Ends:   Unarmoured

   - Torpedo Bulkhead:
      2.00" / 51 mm   470.00 ft / 143.26 m   28.00 ft / 8.53 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   16.0" / 406 mm   9.00" / 229 mm      15.0" / 381 mm
   2nd:   2.00" / 51 mm   1.00" / 25 mm      1.00" / 25 mm
   3rd:   2.00" / 51 mm   1.00" / 25 mm      1.00" / 25 mm

   - Armour deck: 4.50" / 114 mm, Conning tower: 14.00" / 356 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 100,124 shp / 74,692 Kw = 28.00 kts
   Range 12,000nm at 12.00 kts
   Bunker at max displacement = 4,203 tons

Complement:
   1,144 - 1,488

Cost:
   £4.742 million / $18.966 million

Distribution of weights at normal displacement:
   Armament: 1,725 tons, 5.7 %
   Armour: 8,075 tons, 26.8 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 974 tons, 3.2 %
      - Armament: 3,207 tons, 10.6 %
      - Armour Deck: 3,602 tons, 11.9 %
      - Conning Tower: 292 tons, 1.0 %
   Machinery: 3,730 tons, 12.4 %
   Hull, fittings & equipment: 12,529 tons, 41.5 %
   Fuel, ammunition & stores: 3,722 tons, 12.3 %
   Miscellaneous weights: 400 tons, 1.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     34,745 lbs / 15,760 Kg = 25.3 x 14.0 " / 356 mm shells or 5.1 torpedoes
   Stability (Unstable if below 1.00): 1.02
   Metacentric height 4.7 ft / 1.4 m
   Roll period: 18.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 56 %
         - Recoil effect (Restricted arc if above 1.00): 0.85
   Seaboat quality  (Average = 1.00): 1.12

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.549
   Length to Beam Ratio: 7.02 : 1
   'Natural speed' for length: 25.69 kts
   Power going to wave formation at top speed: 53 %
   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 (% = measuring location as a percentage of overall length):
      - Stem:      28.00 ft / 8.53 m
      - Forecastle (20 %):   24.00 ft / 7.32 m
      - Mid (63 %):      22.00 ft / 6.71 m
      - Quarterdeck (20 %):   22.00 ft / 6.71 m
      - Stern:      22.00 ft / 6.71 m
      - Average freeboard:   23.15 ft / 7.06 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 107.5 %
      - Above water (accommodation/working, high = better): 163.6 %
   Waterplane Area: 43,267 Square feet or 4,020 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 197 lbs/sq ft or 960 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.67
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas