Parthian vessels 1916 onwards

The Rock Doctor · January 26, 2023, 10:54:48 AM

Noted that the wiki article on Merchant Aircraft Carriers cites a couple of deck dimension requirements with 120x19 metres being a late one. Obviously that applies to ships operating Swordfish with 14m wingspans rather than higher performance aircraft.

Ship speed seems to be more about keeping up with convoys rather than launching planes, but merchant speeds are pretty cheap in SS.

Kaiser Kirk · January 31, 2023, 12:22:18 PM

..back to cruisers.

So trying to cram all the things I want into a 6000t hull worked great on a 0.75 comp hull,
but not at a 0.9...

So a look at a hybrid between the Moulek and Royal Neissan.
Odd mix of Two-gun and Single.

Moulek IIIC, Parthian Cruiser laid down 1925

Displacement:
   8,000 t light; 8,535 t standard; 9,466 t normal; 10,211 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (524.93 ft / 518.37 ft) x 62.34 ft x (22.15 / 23.40 ft)
   (160.00 m / 158.00 m) x 19.00 m x (6.75 / 7.13 m)

Armament:
12 - 7.09" / 180 mm 47.0 cal guns - 187.39lbs / 85.00kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1925 Model
     4 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
     4 x Single mounts on side ends, evenly spread
8 - 3.54" / 90.0 mm 50.0 cal guns - 24.25lbs / 11.00kg shells, 600 per gun
     Anti-air guns in deck and hoist mounts, 1925 Model
     4 x 2-gun mounts on side ends, evenly spread
      4 raised mounts
4 - 2.24" / 57.0 mm 60.0 cal guns - 6.61lbs / 3.00kg shells, 900 per gun
     Anti-air guns in deck and hoist mounts, 1925 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      2 double raised mounts
4 - 2.24" / 57.0 mm 60.0 cal guns - 6.61lbs / 3.00kg shells, 900 per gun
     Breech loading guns in deck and hoist mounts, 1925 Model
     2 x 2-gun mounts on sides amidships
      2 double raised mounts
16 - 0.59" / 15.0 mm 70.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1925 Model
     8 x Twin mounts on sides, evenly spread
      8 double raised mounts
Weight of broadside 2,497 lbs / 1,133 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.33" / 110 mm   311.02 ft / 94.80 m   16.80 ft / 5.12 m
   Ends:   Unarmoured
     Main Belt covers 92 % of normal length
     Main Belt inclined -12.00 degrees (positive = in)

- Hull void:
      0.00" / 0 mm     0.00 ft / 0.00 m   0.00 ft / 0.00 m

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.95" / 75 mm   1.38" / 35 mm      1.97" / 50 mm
   2nd:   1.38" / 35 mm   0.98" / 25 mm      0.98" / 25 mm
   3rd:   0.59" / 15 mm   0.31" / 8 mm      0.31" / 8 mm
   4th:   0.59" / 15 mm   0.31" / 8 mm      0.31" / 8 mm
   5th:   0.31" / 8 mm     -           -

- Armoured deck - single deck:
   For and Aft decks: 2.36" / 60 mm
   Forecastle: 1.38" / 35 mm Quarter deck: 2.36" / 60 mm

- Conning towers: Forward 5.31" / 135 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 3 shafts, 58,305 shp / 43,496 Kw = 29.00 kts
   Range 8,360nm at 14.00 kts
   Bunker at max displacement = 1,676 tons

Complement:
   479 - 623

Cost:
   £2.590 million / $10.359 million

Distribution of weights at normal displacement:
   Armament: 690 tons, 7.3 %
     - Guns: 690 tons, 7.3 %
   Armour: 2,055 tons, 21.7 %
     - Belts: 955 tons, 10.1 %
     - Armament: 165 tons, 1.7 %
     - Armour Deck: 883 tons, 9.3 %
     - Conning Tower: 51 tons, 0.5 %
   Machinery: 1,893 tons, 20.0 %
   Hull, fittings & equipment: 2,967 tons, 31.3 %
   Fuel, ammunition & stores: 1,466 tons, 15.5 %
   Miscellaneous weights: 395 tons, 4.2 %
     - Hull below water: 50 tons
     - Hull void weights: 35 tons
     - Hull above water: 16 tons
     - On freeboard deck: 140 tons
     - Above deck: 154 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     11,300 lbs / 5,126 Kg = 63.5 x 7.1 " / 180 mm shells or 1.7 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 2.9 ft / 0.9 m
   Roll period: 15.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.80
   Seaboat quality (Average = 1.00): 1.24

Hull form characteristics:
   Hull has rise forward of midbreak, low quarterdeck ,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.463 / 0.473
   Length to Beam Ratio: 8.32 : 1
   'Natural speed' for length: 22.77 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: -6.56 ft / -2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   20.00 %, 25.92 ft / 7.90 m, 25.92 ft / 7.90 m
     - Forward deck:   25.00 %, 25.92 ft / 7.90 m, 25.92 ft / 7.90 m
     - Aft deck:   35.00 %, 18.04 ft / 5.50 m, 18.04 ft / 5.50 m
     - Quarter deck:   20.00 %, 9.84 ft / 3.00 m, 9.84 ft / 3.00 m
     - Average freeboard:      19.95 ft / 6.08 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 91.7 %
      - Above water (accommodation/working, high = better): 176.7 %
   Waterplane Area: 20,836 Square feet or 1,936 Square metres
   Displacement factor (Displacement / loading): 110 %
   Structure weight / hull surface area: 99 lbs/sq ft or 484 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.83
      - Longitudinal: 1.78
      - Overall: 0.90
   Caution: Hull subject to strain in open-sea
   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

Warning: Beam between bulkheads too wide

A mixture of the new two-gun and older singles,
this vessel brings 10 guns on the broadside and 6 guns forward/aft.
Each gun mounting is protected against lighter guns and splinters, but
not peer hits.

The outsloped belt is extensive to add floatation,
while a thick armored deck caps it, to better allow the vessel to fight at
the edge of it's 18km effective range.

The Two-gun mountings have a rotating weight of 118t
and so are provided with 48tons of power assist (12t/ea)
while the single guns have a rotating weight of 65t.
The 85kg shell is also within guidelines.

Each main gun mounting is 65.7 tons, with a 85kg shell wt, within the guidelines for weight.

A lowered quarterdeck is hoped to make aircraft handling easier.

A/B/X/Y : 2-G 180mm
C/D/E/F : 1-G 180mm
1-4 : 2x 90mm
a-d : 2x 57mm
TT : Torpedo Tubes

( ) : Superimposed
[ ] : Double superimposed

|
| : Deck level change

C (D) | TT G |
(1) | (3) |
   | |
A (B) [a] | [d] (X) Y| A/C
[c] | |
(2) | (4) |
E (F) | TT H |

Armor :
A heavy 60mm armor deck is mounted high at the 3.0m level.
A broad outsloped armor belt then covers from the armor deck
to -2.0m
The fore and aft decks are protective decks crowning at 0.5 and descending to -2.0.

Armor Belt : From 3.0 to -2.0
Outsloped 12
5m/cos(12) =5.12

Miscellaneous Wt :

Reserve : 35t

AD :
69t : Fire Control
25t : LR Radio
25t : Searchlight Tower (NF)
25t : Hulesmeyer Proximity Detector for night formations
0t : SR Radio
10t : Dedicated AC SR Radio
---
144t

OD
5t : Paravanes
32t : 2TT4 21" Torpedoes
50t : Provision for 2 Floatplanes - Scout (or Ftr) on fantail
5t : 1x gunpowder Cat on fantail
48t : Power assist for Two-Gun 180mm mounts.
---
140t

HAW
8t : Additional Fire Suppression
8t : CO2 compressor AC

HBW
8t : Additional Pumps
10t : 9t Av Gas +1t dble wall tank
32t : Spare Torpedoes

Decks
7.9 : Forecastle Deck
5.5 : Weather Deck
3.0 : Top main belt, Armor Deck
0.5 : Main Deck
-2.0 : Bottom main belt
-4.5 : Engineering
-5.6 : Double Bottom
-6.0 : Keel

TacCovert4 · January 31, 2023, 03:36:08 PM

Honestly, have you thought about a Q mount of twins? You're dropping in 4 guns to only add 2 to your broadside. Seems a bit wasteful of tonnage and space on such a small ship.

I'm doing the same work right now, made one awesome .9 cruiser at 9000t. Then realized it had to be 8000. So now I'm redoing it, again, to get it to 8000.

Kaiser Kirk · January 31, 2023, 03:36:30 PM

Same basic cruiser,
some tinkering with hull form and reduction in deck heights
so looses the 1.2 sea and 70 'slow and easy'
but gains +1 knot to 30knots.
Belt drops from 110 to 100mm but moves up 0.7m. Still outsloped.

Overall I think I like the IIIC better.

Moulek IIID, Parthian Cruiser laid down 1925

Displacement:
   8,007 t light; 8,542 t standard; 9,474 t normal; 10,219 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (524.93 ft / 518.37 ft) x 59.06 ft x (23.29 / 24.61 ft)
   (160.00 m / 158.00 m) x 18.00 m x (7.10 / 7.50 m)

Armament:
12 - 7.09" / 180 mm 47.0 cal guns - 187.39lbs / 85.00kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1925 Model
     4 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
     4 x Single mounts on side ends, evenly spread
8 - 3.54" / 90.0 mm 50.0 cal guns - 24.25lbs / 11.00kg shells, 600 per gun
     Anti-air guns in deck and hoist mounts, 1925 Model
     4 x 2-gun mounts on side ends, evenly spread
      4 raised mounts
4 - 2.24" / 57.0 mm 60.0 cal guns - 6.61lbs / 3.00kg shells, 900 per gun
     Anti-air guns in deck and hoist mounts, 1925 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      2 double raised mounts
4 - 2.24" / 57.0 mm 60.0 cal guns - 6.61lbs / 3.00kg shells, 900 per gun
     Breech loading guns in deck and hoist mounts, 1925 Model
     2 x 2-gun mounts on sides amidships
      2 double raised mounts
16 - 0.59" / 15.0 mm 70.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1925 Model
     8 x Twin mounts on sides, evenly spread
      8 double raised mounts
Weight of broadside 2,497 lbs / 1,133 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.94" / 100 mm   342.13 ft / 104.28 m   17.45 ft / 5.32 m
   Ends:   Unarmoured
     Main Belt covers 102 % of normal length
     Main Belt inclined -12.00 degrees (positive = in)

- Hull void:
      0.00" / 0 mm     0.00 ft / 0.00 m   0.00 ft / 0.00 m

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.95" / 75 mm   1.38" / 35 mm      1.97" / 50 mm
   2nd:   1.38" / 35 mm   0.98" / 25 mm      0.98" / 25 mm
   3rd:   0.59" / 15 mm   0.31" / 8 mm      0.31" / 8 mm
   4th:   0.59" / 15 mm   0.31" / 8 mm      0.31" / 8 mm
   5th:   0.31" / 8 mm     -           -

- Armoured deck - single deck:
   For and Aft decks: 2.36" / 60 mm
   Forecastle: 1.38" / 35 mm Quarter deck: 2.36" / 60 mm

- Conning towers: Forward 5.31" / 135 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 3 shafts, 66,559 shp / 49,653 Kw = 30.00 kts
   Range 8,340nm at 14.00 kts
   Bunker at max displacement = 1,678 tons

Complement:
   479 - 624

Cost:
   £2.713 million / $10.853 million

Distribution of weights at normal displacement:
   Armament: 690 tons, 7.3 %
     - Guns: 690 tons, 7.3 %
   Armour: 2,022 tons, 21.3 %
     - Belts: 969 tons, 10.2 %
     - Armament: 163 tons, 1.7 %
     - Armour Deck: 839 tons, 8.9 %
     - Conning Tower: 51 tons, 0.5 %
   Machinery: 2,161 tons, 22.8 %
   Hull, fittings & equipment: 2,738 tons, 28.9 %
   Fuel, ammunition & stores: 1,467 tons, 15.5 %
   Miscellaneous weights: 395 tons, 4.2 %
     - Hull below water: 50 tons
     - Hull void weights: 35 tons
     - Hull above water: 16 tons
     - On freeboard deck: 140 tons
     - Above deck: 154 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8,907 lbs / 4,040 Kg = 50.1 x 7.1 " / 180 mm shells or 1.4 torpedoes
   Stability (Unstable if below 1.00): 1.12
   Metacentric height 2.8 ft / 0.9 m
   Roll period: 14.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.64
   Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
   Hull has rise forward of midbreak,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.465 / 0.475
   Length to Beam Ratio: 8.78 : 1
   'Natural speed' for length: 22.77 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: -6.56 ft / -2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   20.00 %, 25.26 ft / 7.70 m, 22.80 ft / 6.95 m
     - Forward deck:   30.00 %, 22.80 ft / 6.95 m, 20.34 ft / 6.20 m
     - Aft deck:   36.00 %, 12.14 ft / 3.70 m, 12.14 ft / 3.70 m
     - Quarter deck:   14.00 %, 12.14 ft / 3.70 m, 12.14 ft / 3.70 m
     - Average freeboard:      17.30 ft / 5.27 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 100.6 %
      - Above water (accommodation/working, high = better): 129.2 %
   Waterplane Area: 19,774 Square feet or 1,837 Square metres
   Displacement factor (Displacement / loading): 104 %
   Structure weight / hull surface area: 97 lbs/sq ft or 473 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.86
      - Longitudinal: 1.52
      - Overall: 0.91
   Caution: Hull subject to strain in open-sea
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room

Warning: Beam between bulkheads too wide

A mixture of the new two-gun and older singles,
this vessel brings 10 guns on the broadside and 6 guns forward/aft.
Each gun mounting is protected against lighter guns and splinters, but
not peer hits.

The outsloped belt is extensive to add floatation,
while a thick armored deck caps it, to better allow the vessel to fight at
the edge of it's 18km effective range.

The Two-gun mountings have a rotating weight of 118t
and so are provided with 48tons of power assist (12t/ea)
while the single guns have a rotating weight of 65t.
The 85kg shell is also within guidelines.

Each main gun mounting is 65.7 tons, with a 85kg shell wt, within the guidelines for weight.

A lowered quarterdeck is hoped to make aircraft handling easier.

A/B/X/Y : 2-G 180mm
C/D/E/F : 1-G 180mm
1-4 : 2x 90mm
a-d : 2x 57mm
TT : Torpedo Tubes

( ) : Superimposed
[ ] : Double superimposed

|
| : Deck level change

C (D) | TT G
(1) | (3)
   |
A (B) [a] | [d] (X) Y A/C
[c] |
(2) | (4)
E (F) | TT H

Armor :
A heavy 60mm armor deck is mounted high at the 3.7m level.
A broad outsloped armor belt then covers from the armor deck
to -1.5m
The fore and aft decks are protective decks crowning at 0.5 and descending to -2.0.

Armor Belt : From 3.0 to -2.0
Outsloped 12
5m/cos(12) =5.12

Miscellaneous Wt :

Reserve : 35t

AD :
69t : Fire Control
25t : LR Radio
25t : Searchlight Tower (NF)
25t : Hulesmeyer Proximity Detector for night formations
0t : SR Radio
10t : Dedicated AC SR Radio
---
144t

OD
5t : Paravanes
32t : 2TT4 21" Torpedoes
50t : Provision for 2 Floatplanes - Scout (or Ftr) on fantail
5t : 1x gunpowder Cat on fantail
48t : Power assist for Two-Gun 180mm mounts.
---
140t

HAW
8t : Additional Fire Suppression
8t : CO2 compressor AC

HBW
8t : Additional Pumps
10t : 9t Av Gas +1t dble wall tank
32t : Spare Torpedoes

Decks

6.2 : Forecastle Deck
3.7 : Weather Deck , Top main belt, Armor Deck
1.2 : Main Deck
-1.3 : Deck
-1.5 : Bottom main belt
-4.9 : Engineering Deck
-5.9 : Double Bottom
-7.1 : Keel

Kaiser Kirk · January 31, 2023, 03:39:06 PM

Quote from: TacCovert4 on January 31, 2023, 03:36:08 PM
Honestly, have you thought about a Q mount of twins? You're dropping in 4 guns to only add 2 to your broadside. Seems a bit wasteful of tonnage and space on such a small ship.

I'm doing the same work right now, made one awesome .9 cruiser at 9000t. Then realized it had to be 8000. So now I'm redoing it, again, to get it to 8000.

The preceeding Royal Neissan class has both P and Q :)

One factor is I want the fast rotating mounts, so singles...though 2/side is a little light. Older ships have 3.
Plus I rather want forward fire as part of the package- this has 6 guns forward, and 10 broadside vs. the Royal Neissan 4 forward, 12 broadside.

Kaiser Kirk · January 31, 2023, 03:54:55 PM

The Parthian arrangement you see on many earlier ships is 10 singles

4 fore-aft in the A/B X/Y
then 3 on each side with a raised central.

That gives 6 forward and 7 broadside, all singles.

So this is exploring between the two.

Kaiser Kirk · January 31, 2023, 05:26:06 PM

Back to the 29knot version, to keep the seakeeping and slow and steady.

I should take a second look at the Q mount as Tac suggests

..but not this time ... taking those side 180 and placing them on the foredeck with the rear ones superimposed.
Same 10 gun broadside, but now 8 guns forward...6 rear.

Nice broad 19m beam to facilitate cheek mountings, high BC means tapers allot at the ends.

Part of this design series is to improve on the Royal Neissan's 50mm deck.
The 60mm deck is a great deal of weight, but should mean she can stand in on cruiser fights for quite some time.
The acceptance of a thinner belt and no protective deck compared to the Moulek I is also a 'range' feature.
But substantially enhanced protected floatation.
Not to mention the class has good floatation compared to the Royal Neissans.

Moulek IIIE, Parthian Cruiser laid down 1925

Displacement:
   8,000 t light; 8,535 t standard; 9,466 t normal; 10,211 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (524.93 ft / 518.37 ft) x 62.34 ft x (22.15 / 23.40 ft)
   (160.00 m / 158.00 m) x 19.00 m x (6.75 / 7.13 m)

Armament:
12 - 7.09" / 180 mm 47.0 cal guns - 187.39lbs / 85.00kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1925 Model
     4 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
     4 x Single mounts on sides, forward evenly spread
      2 raised mounts
8 - 3.54" / 90.0 mm 50.0 cal guns - 24.25lbs / 11.00kg shells, 600 per gun
     Anti-air guns in deck and hoist mounts, 1925 Model
     4 x 2-gun mounts on side ends, evenly spread
      4 raised mounts
4 - 2.24" / 57.0 mm 60.0 cal guns - 6.61lbs / 3.00kg shells, 900 per gun
     Anti-air guns in deck and hoist mounts, 1925 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      2 double raised mounts
4 - 2.24" / 57.0 mm 60.0 cal guns - 6.61lbs / 3.00kg shells, 900 per gun
     Breech loading guns in deck and hoist mounts, 1925 Model
     2 x 2-gun mounts on sides amidships
      2 double raised mounts
16 - 0.59" / 15.0 mm 70.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1925 Model
     8 x Twin mounts on sides, evenly spread
      8 double raised mounts
Weight of broadside 2,497 lbs / 1,133 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.33" / 110 mm   311.02 ft / 94.80 m   16.80 ft / 5.12 m
   Ends:   Unarmoured
     Main Belt covers 92 % of normal length
     Main Belt inclined -12.00 degrees (positive = in)

- Hull void:
      0.00" / 0 mm     0.00 ft / 0.00 m   0.00 ft / 0.00 m

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.95" / 75 mm   1.38" / 35 mm      1.97" / 50 mm
   2nd:   1.38" / 35 mm   0.98" / 25 mm      0.98" / 25 mm
   3rd:   0.59" / 15 mm   0.31" / 8 mm      0.31" / 8 mm
   4th:   0.59" / 15 mm   0.31" / 8 mm      0.31" / 8 mm
   5th:   0.31" / 8 mm     -           -

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

- Conning towers: Forward 4.72" / 120 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 3 shafts, 58,305 shp / 43,496 Kw = 29.00 kts
   Range 8,360nm at 14.00 kts
   Bunker at max displacement = 1,676 tons

Complement:
   479 - 623

Cost:
   £2.590 million / $10.359 million

Distribution of weights at normal displacement:
   Armament: 690 tons, 7.3 %
     - Guns: 690 tons, 7.3 %
   Armour: 2,036 tons, 21.5 %
     - Belts: 955 tons, 10.1 %
     - Armament: 166 tons, 1.8 %
     - Armour Deck: 869 tons, 9.2 %
     - Conning Tower: 46 tons, 0.5 %
   Machinery: 1,893 tons, 20.0 %
   Hull, fittings & equipment: 2,991 tons, 31.6 %
   Fuel, ammunition & stores: 1,466 tons, 15.5 %
   Miscellaneous weights: 390 tons, 4.1 %
     - Hull below water: 50 tons
     - Hull void weights: 30 tons
     - Hull above water: 16 tons
     - On freeboard deck: 140 tons
     - Above deck: 154 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     11,227 lbs / 5,093 Kg = 63.1 x 7.1 " / 180 mm shells or 1.7 torpedoes
   Stability (Unstable if below 1.00): 1.07
   Metacentric height 2.8 ft / 0.9 m
   Roll period: 15.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.84
   Seaboat quality (Average = 1.00): 1.24

Hull form characteristics:
   Hull has rise forward of midbreak, low quarterdeck ,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.463 / 0.473
   Length to Beam Ratio: 8.32 : 1
   'Natural speed' for length: 22.77 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: -6.56 ft / -2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   20.00 %, 25.92 ft / 7.90 m, 25.92 ft / 7.90 m
     - Forward deck:   25.00 %, 25.92 ft / 7.90 m, 25.92 ft / 7.90 m
     - Aft deck:   35.00 %, 18.04 ft / 5.50 m, 18.04 ft / 5.50 m
     - Quarter deck:   20.00 %, 9.84 ft / 3.00 m, 9.84 ft / 3.00 m
     - Average freeboard:      19.95 ft / 6.08 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 91.7 %
      - Above water (accommodation/working, high = better): 176.7 %
   Waterplane Area: 20,836 Square feet or 1,936 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 100 lbs/sq ft or 487 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.83
      - Longitudinal: 1.79
      - Overall: 0.90
   Caution: Hull subject to strain in open-sea
   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

A/B/X/Y : 2-G 180mm
C/D/E/F : 1-G 180mm
1-4 : 2x 90mm
a-d : 2x 57mm
TT : Torpedo Tubes

( ) : Superimposed
[ ] : Double superimposed

|
| : Deck level change

C (D) | TT |
(1) | (3) |
   | |
A (B) [a] | [d] (X) Y| A/C
[c] | |
(2) | (4) |
E (F) | TT |

Kaiser Kirk · January 31, 2023, 05:42:36 PM

So a Q mount removes those 4 singles, adds a Foredeck Aft 2-gun.
That takes 12 more for power training,
Keeps the 10gun broadside and drops the fore/aft fire to 4 guns each,
BUT allows upping the belt to the desired 125mm outsloped.

That's intriguing.

Though I really like the heavy forward fire, both as a hard target
and to be able to close with a fast vessel- they can't turn broadside
without letting me close.
And so long as I have superior armor, that's in my favor.

Kaiser Kirk · February 01, 2023, 11:00:34 PM

Interesting, my use of [] for the double super mounts, and the letter b...triggers the BOLD.
Should have forseen that.

Also, got to remember to save, close, and reopen the ships...and double check tonnage. Both those
are a smidge over the 8000 mark. Easily fixed, but...

So going back to the actual 1921 Moulek, which seems a good basis,
and seeing how much I can wring out of the design.

I'd like more guns, armor and seakeeping.... but for 6000 tons this isn't bad.
Floatation is fairly minimal due to being crammed full of machinery and guns.

Range is quite good. Capable of long range sustained operations.

This does have an thick armored deck + outsloped belt arrangement
which should give a little more floatation but worse short range armor.

This has the 180L47 arranged for forward fire.
As I recalled I looked up the Atlanta class for beam,
figuring their 'wing' twin 5" breech and handling gear / mount ring
would have a similar foot print to the single 180.
The longer 180 barrel should not greatly matter.

C (E) |
A (B) | (X) Y
D (F) |

So 6 broadside and 6 forward, but 4 aft.

Each single mount is 64 tons rotating

Quote
Moulek IIIA Parthian Cruiser laid down 1925

Displacement:
   6,000 t light; 6,380 t standard; 7,348 t normal; 8,122 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (523.50 ft / 516.73 ft) x 50.30 ft x (21.33 / 22.94 ft)
   (159.56 m / 157.50 m) x 15.33 m x (6.50 / 6.99 m)

Armament:
8 - 7.09" / 180 mm 47.0 cal guns - 187.39lbs / 85.00kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1925 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
     4 x Single mounts on sides, forward deck aft
      2 raised mounts - superfiring
8 - 3.54" / 90.0 mm 50.0 cal guns - 24.25lbs / 11.00kg shells, 400 per gun
     Anti-air guns in deck and hoist mounts, 1925 Model
     4 x 2-gun mounts on side ends, evenly spread
      4 raised mounts
8 - 2.24" / 57.0 mm 60.0 cal guns - 6.61lbs / 3.00kg shells, 610 per gun
     Breech loading guns in deck mounts, 1925 Model
     2 x 2-gun mounts on sides amidships
      2 raised mounts
     2 x 2-gun mounts on centreline ends, evenly spread
      2 double raised mounts
16 - 0.59" / 15.0 mm 70.0 cal guns - 0.12lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1925 Model
     8 x Twin mounts on sides, evenly spread
      8 double raised mounts
Weight of broadside 1,748 lbs / 793 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.94" / 100 mm   346.23 ft / 105.53 m   10.07 ft / 3.07 m
   Ends:   Unarmoured
     Main Belt covers 103 % of normal length
     Main Belt inclined -12.00 degrees (positive = in)

- Hull void:
      0.00" / 0 mm     0.00 ft / 0.00 m   0.00 ft / 0.00 m

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   1.38" / 35 mm      1.97" / 50 mm
   2nd:   0.31" / 8 mm     -           -
   3rd:   0.31" / 8 mm     -           -
   4th:   0.31" / 8 mm     -           -

- Armoured deck - single deck:
   For and Aft decks: 2.17" / 55 mm
   Forecastle: 0.98" / 25 mm Quarter deck: 2.17" / 55 mm

- Conning towers: Forward 4.33" / 110 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 3 shafts, 55,801 shp / 41,627 Kw = 30.00 kts
   Range 10,100nm at 14.00 kts
   Bunker at max displacement = 1,742 tons

Complement:
   396 - 515

Cost:
   £2.074 million / $8.296 million

Distribution of weights at normal displacement:
   Armament: 478 tons, 6.5 %
     - Guns: 478 tons, 6.5 %
   Armour: 1,351 tons, 18.4 %
     - Belts: 558 tons, 7.6 %
     - Armament: 114 tons, 1.6 %
     - Armour Deck: 644 tons, 8.8 %
     - Conning Tower: 35 tons, 0.5 %
   Machinery: 1,812 tons, 24.7 %
   Hull, fittings & equipment: 2,169 tons, 29.5 %
   Fuel, ammunition & stores: 1,347 tons, 18.3 %
   Miscellaneous weights: 190 tons, 2.6 %
     - Hull void weights: 20 tons
     - Hull above water: 6 tons
     - On freeboard deck: 66 tons
     - Above deck: 98 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     6,560 lbs / 2,976 Kg = 36.9 x 7.1 " / 180 mm shells or 1.2 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 2.1 ft / 0.7 m
   Roll period: 14.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.76
   Seaboat quality (Average = 1.00): 1.07

Hull form characteristics:
   Hull has rise forward of midbreak,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.464 / 0.477
   Length to Beam Ratio: 10.27 : 1
   'Natural speed' for length: 22.73 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 46
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: -6.56 ft / -2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   20.00 %, 25.26 ft / 7.70 m, 22.64 ft / 6.90 m
     - Forward deck:   25.00 %, 22.64 ft / 6.90 m, 20.34 ft / 6.20 m
     - Aft deck:   42.00 %, 12.14 ft / 3.70 m, 12.14 ft / 3.70 m
     - Quarter deck:   13.00 %, 12.14 ft / 3.70 m, 12.14 ft / 3.70 m
     - Average freeboard:      16.79 ft / 5.12 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 103.0 %
      - Above water (accommodation/working, high = better): 126.1 %
   Waterplane Area: 16,773 Square feet or 1,558 Square metres
   Displacement factor (Displacement / loading): 108 %
   Structure weight / hull surface area: 84 lbs/sq ft or 412 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.85
      - Longitudinal: 1.37
      - Overall: 0.90
   Caution: Hull subject to strain in open-sea
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room

Armor Deck : 55mm capping Armor Belt

Armor Belt : From 1.5 to -1.5
Outsloped 12deg
3m/Cos(12) = 3.07

Misc. Weight :
20t: Construction Resv

AD
25t : LR Radio
48t : FC
25t : Searchlight tower (NF)

OD
36t : 2T3 21" TT
5t : Paravanes
20 : Scout Floatplane on stern
5t : Gunpowder Cat

HAW
6t : CO2 Compressor AC

Decks :

+6.50 : Forecastle deck
+4.00 : Battery deck/ weather deck
+1.50 : Armor Deck
-1.00 : 1st deck
-1.50 : bottom armor belt
-4.50 : Engineering
-5.32 : Keel, double bottom
[/quote[

Kaiser Kirk · February 02, 2023, 08:37:30 PM

The 3000 ton conundrum.

The Parthians are currently replacing their ancient armored sailing frigates
with the Artesmia II class.
Basically a 130mm version of the Omaha they are 31 knots and have an armored magazine box,
as well as really long range.

I'm not happy with them.
So I took another look at their 'competitor' designs- the Sayidda and Khulutun.

Except for the top speed, this is much more what I want in that role.
Light armor, good range, and enough gun punch to take an AMC, disrupt an opposing DD division,
or land some blows in night combat.

....now to figure out how to add 2 knots while keeping everything else..and maybe trimming some tonnage....
which I suspect is not achievable

Sayyida, Parthian Armored Frigate laid down 1925

Displacement:
   3,000 t light; 3,166 t standard; 3,685 t normal; 4,100 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (426.19 ft / 419.95 ft) x 42.65 ft x (15.29 / 16.54 ft)
   (129.90 m / 128.00 m) x 13.00 m x (4.66 / 5.04 m)

Armament:
4 - 6.50" / 165 mm 43.0 cal guns - 143.30lbs / 65.00kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1925 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
4 - 3.54" / 90.0 mm 50.0 cal guns - 24.25lbs / 11.00kg shells, 200 per gun
     Anti-air guns in deck mounts, 1925 Model
     4 x Single mounts on side ends, evenly spread
8 - 2.24" / 57.0 mm 60.0 cal guns - 6.61lbs / 3.00kg shells, 500 per gun
     Breech loading guns in deck and hoist mounts, 1925 Model
     2 x 2-gun mounts on sides amidships
      2 raised mounts
     2 x 2-gun mounts on centreline ends, evenly spread
      2 double raised mounts
16 - 0.59" / 15.0 mm 70.0 cal guns - 0.11lbs / 0.05kg shells, 3,000 per gun
     Breech loading guns in deck mounts, 1925 Model
     8 x Twin mounts on sides, evenly spread
      8 double raised mounts
Weight of broadside 725 lbs / 329 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   0.59" / 15 mm   323.36 ft / 98.56 m   12.01 ft / 3.66 m
   Ends:   Unarmoured
     Main Belt covers 118 % of normal length

- Hull void:
      0.00" / 0 mm     0.00 ft / 0.00 m   0.00 ft / 0.00 m

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.95" / 75 mm   1.38" / 35 mm      1.97" / 50 mm
   2nd:   0.31" / 8 mm     -           -
   3rd:   0.31" / 8 mm   0.31" / 8 mm        -
   4th:   0.31" / 8 mm     -           -

- Protected deck - multiple decks:
   For and Aft decks: 1.38" / 35 mm
   Forecastle: 0.98" / 25 mm Quarter deck: 1.38" / 35 mm

- Conning towers: Forward 1.38" / 35 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 3 shafts, 34,878 shp / 26,019 Kw = 29.00 kts
   Range 8,240nm at 14.00 kts
   Bunker at max displacement = 935 tons

Complement:
   236 - 307

Cost:
   £1.062 million / $4.249 million

Distribution of weights at normal displacement:
   Armament: 177 tons, 4.8 %
     - Guns: 177 tons, 4.8 %
   Armour: 465 tons, 12.6 %
     - Belts: 92 tons, 2.5 %
     - Armament: 73 tons, 2.0 %
     - Armour Deck: 293 tons, 8.0 %
     - Conning Tower: 7 tons, 0.2 %
   Machinery: 1,132 tons, 30.7 %
   Hull, fittings & equipment: 1,026 tons, 27.8 %
   Fuel, ammunition & stores: 685 tons, 18.6 %
   Miscellaneous weights: 200 tons, 5.4 %
     - Hull below water: 18 tons
     - Hull void weights: 30 tons
     - Hull above water: 6 tons
     - On freeboard deck: 48 tons
     - Above deck: 98 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     2,429 lbs / 1,102 Kg = 17.7 x 6.5 " / 165 mm shells or 0.7 torpedoes
   Stability (Unstable if below 1.00): 1.16
   Metacentric height 1.8 ft / 0.6 m
   Roll period: 13.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.55
   Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
   Hull has rise forward of midbreak,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.471 / 0.484
   Length to Beam Ratio: 9.85 : 1
   'Natural speed' for length: 20.49 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: -6.56 ft / -2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   17.00 %, 23.29 ft / 7.10 m, 20.83 ft / 6.35 m
     - Forward deck:   30.00 %, 20.83 ft / 6.35 m, 18.37 ft / 5.60 m
     - Aft deck:   47.00 %, 9.84 ft / 3.00 m, 9.84 ft / 3.00 m
     - Quarter deck:   6.00 %, 9.84 ft / 3.00 m, 9.84 ft / 3.00 m
     - Average freeboard:      14.81 ft / 4.51 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 117.0 %
      - Above water (accommodation/working, high = better): 128.1 %
   Waterplane Area: 11,629 Square feet or 1,080 Square metres
   Displacement factor (Displacement / loading): 105 %
   Structure weight / hull surface area: 58 lbs/sq ft or 281 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.71
      - Longitudinal: 1.23
      - Overall: 0.75
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room

Warning: Beam between bulkheads too wide

The Sayyida class was viewed as an alternative to the Artesmia II class.

Ship Requirements :
Main role is independent operations as a patrol vessel, 'show the flag' and general patrol.

Secondary is screening the fleet or independent raids,
acting as a destroyer or torpedo boat leader in the latter case.

Speed of 29knots to be able to operate with most
Parthian Cruisers. It is NOT the 30 or 31 desired.

Opting for a few hard hitting QF guns vs. lots of lighter,
the 4x 165mm are expected to wreck a destroyer with a hit,
while providing the ability to hurt a fellow cruiser close in.

The protective deck with 35mm crown and
50mm slopes is meant to provide defense against destroyer
level weapons.

Night Fighting and reconnaisance abilities
Plotting room for DD Formation

Oceanic range for Pacific operations is preferred,
but difficult. Still 8000*1.15 = 8920nm, not bad.

Misc Wt :
Reserve : 20

AD :
18t FC
25t LR Radio and Masts
25t Hulesmeyer proximity detector
15t Night fighting gear
15t Squadron Plot Room.

OD
5t - Paravanes
18t - 2x TT3 21"
20+5t : Scout floatplane + gunpowder cat - amidships

2t 2 "Y" throwers
8t DC on fantail

HAW
3t CO2 AC
3t Enhanced fire suppresion

HBW
3t Enhanced Pumps
15t Enhanced Hydrophones

TacCovert4 · February 02, 2023, 09:58:03 PM

Is that a 15mm belt? Oof. That's not enough to keep out a lot of splinters. Why not just do a box over mag and machinery, cut down on risk of a 1 shot instead?

Kaiser Kirk · February 02, 2023, 11:38:17 PM

Quote from: TacCovert4 on February 02, 2023, 09:58:03 PM
Is that a 15mm belt? Oof. That's not enough to keep out a lot of splinters. Why not just do a box over mag and machinery, cut down on risk of a 1 shot instead?

Hmm forgot to put that in the notes -

That's +15mm on the slopes of the protective deck, (which is why the height is 3.66m, to account for a 1 deck level 45deg slope)
giving 50mm on the slope and 35mm on the crown.

That's over the citadel, the fore/aft would just be the 35mm.... which would still defeat HE and Destroyer rounds.

Jefgte · February 03, 2023, 02:25:22 AM

Very close to the old Amman class AGBs of 1897-1921.
The last 1925 AGB project was 2500t-2T2x191-24kts

=> Reducing the speed from 30 to 29kts gives more flexibility for your overall design.

Kaiser Kirk · February 05, 2023, 05:47:56 PM

1925 update of a previously posted 1924 design..

In 1924 I laid down the first 4 of the new Vakharz (Wolf) fleet destroyers,
But chose to lay down the 12th of the Palang (Leopard) Oceanic destroyers.

Since I want groups of 3 to triangulate on subs, fielding 4 groups of 3 makes sense..
BUT...it means the 1924 oceanic destroyers previously posted have the wrong engine year.
So I need one for 1925, which means rebalancing to get to .5 and 50%

So this is the 1925 version of the Babr (Tiger) Oceanic Destroyer
Again, choosing to forgo a 6th 120mm for the ASW howitzer,

Babr (Tiger), Parthian Corvette laid down 1925

Displacement:
   1,500 t light; 1,584 t standard; 1,865 t normal; 2,090 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (392.94 ft / 387.14 ft) x 36.75 ft x (10.93 / 11.81 ft)
   (119.77 m / 118.00 m) x 11.20 m x (3.33 / 3.60 m)

Armament:
5 - 4.72" / 120 mm 43.0 cal guns - 55.12lbs / 25.00kg shells, 220 per gun
     Quick firing guns in deck mounts, 1925 Model
     2 x 2-gun mounts on centreline ends, evenly spread
     1 x Single mount on centreline, aft deck centre
      1 raised mount aft
1 - 4.65" / 118 mm 21.0 cal gun - 59.52lbs / 27.00kg shells, 200 per gun
     Quick firing gun in casemate mount, 1925 Model
     1 x Single mount on centreline, forward deck centre
      1 raised mount
4 - 2.24" / 57.0 mm 60.0 cal guns - 6.61lbs / 3.00kg shells, 350 per gun
     Anti-air guns in deck mounts, 1925 Model
     2 x 2-gun mounts on sides forward
      2 raised mounts
8 - 0.59" / 15.0 mm 70.0 cal guns - 0.12lbs / 0.05kg shells, 2,500 per gun
     Anti-air guns in deck mounts, 1925 Model
     2 x 2 row quad mounts on centreline ends, evenly spread
      2 double raised mounts
Weight of broadside 363 lbs / 164 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.24" / 6 mm     -           -
   2nd:   0.24" / 6 mm     -           -
   3rd:   0.24" / 6 mm     -           -
   4th:   0.24" / 6 mm     -           -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 33,798 shp / 25,213 Kw = 31.90 kts
   Range 6,660nm at 14.00 kts
   Bunker at max displacement = 505 tons

Complement:
   141 - 184

Cost:
   £0.648 million / $2.590 million

Distribution of weights at normal displacement:
   Armament: 54 tons, 2.9 %
     - Guns: 54 tons, 2.9 %
   Armour: 3 tons, 0.2 %
     - Armament: 3 tons, 0.2 %
   Machinery: 932 tons, 50.0 %
   Hull, fittings & equipment: 431 tons, 23.1 %
   Fuel, ammunition & stores: 365 tons, 19.6 %
   Miscellaneous weights: 80 tons, 4.3 %
     - Hull below water: 25 tons
     - Hull void weights: 12 tons
     - Hull above water: 2 tons
     - On freeboard deck: 30 tons
     - Above deck: 11 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     530 lbs / 240 Kg = 10.0 x 4.7 " / 120 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.41
   Metacentric height 2.0 ft / 0.6 m
   Roll period: 10.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.23
   Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.420 / 0.435
   Length to Beam Ratio: 10.54 : 1
   'Natural speed' for length: 19.68 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   20.00 %, 21.65 ft / 6.60 m, 19.03 ft / 5.80 m
     - Forward deck:   26.00 %, 19.03 ft / 5.80 m, 16.73 ft / 5.10 m
     - Aft deck:   39.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
     - Quarter deck:   15.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
     - Average freeboard:      13.27 ft / 4.05 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 172.3 %
      - Above water (accommodation/working, high = better): 147.0 %
   Waterplane Area: 8,869 Square feet or 824 Square metres
   Displacement factor (Displacement / loading): 77 %
   Structure weight / hull surface area: 32 lbs/sq ft or 154 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 0.90
      - Overall: 0.53
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Sher - Lion
Babr- Tiger
Palang - Leopard
Vakharz - Wolf

This is an evolution of the Palang (Leopard) design,
boosting gun power while retaining the other elements.
Ultimately this sacrifices the good seakeeping,
but fits in one more 120mm guns, and better provisions for night fighting.

The 12tons reserve miscellaneous weight also gives some room for expansion and rearming of the design, wether with larger torpedoes, more DCs, a reworked armanent or other.

The main battery is aligned in a pair of
two-gun mounts in A and X, with a superimposed "Y"
addressing a perceived deficiency vs. some foriegn designs

In "B" is a howitzer firing blunt nosed shells to allow forward engagement of submarines. For shore bombardment support,additional HE rounds can be stored in the 120mm mag.

Amidships is an elevated platform between the torpedo tubes, aranged en echelon are the two pairs of 57mm AA. This allows good sky arcs, and good engagement on the opposite broadside

For/aft, Paired twin GAST 15mm
are mounted to allow engagement of any plane seeking to strafe the length of the ship. These can also bear on the beam.

All guns are given bulletproof 1/4" (6mm) spray shields.

12T - Construction reserve

AD:
5.5t - FC
0t - SR Radio
5.5t - NF Gear

OD:
2t - Lt. MS Paravanes
18t - 2TT3 21" Torpedoes
1t - DC "Y" thrower
1t - ASW Paravanes
0t - 2 stern rails
8t - Depth charges (32x 280kg)

HAW
1.5t - CO2 Air Compressor AC

HBW
15t - Enhanced Hydrophones
10t - Sonar

Range :
Central to this class is very long range.
6660nm + 10% for geared = 7326nm
which is sufficient to accompany the fleet in Pacific operations.

Kaiser Kirk · February 18, 2023, 11:09:17 PM

Back to my veritable plethora of Carrier concepts.

As 'Bazdari' seems to be similar to 'Falconeer' in middle Persian, I will continue using that.

The previous version was much like HMS Hermes
8500 tons, and 25 Aircraft with light weapons and armor.

This is 10,500 with provisions for 1/3 more aircraft - not carried at first,
and cruiser-level guns and armor. I could see dropping the deck to 35mm and boosting the belt a tad.

CVF Bazdari, Parthian Fighter Carrier laid down 1925

Displacement:
   10,500 t light; 10,979 t standard; 12,610 t normal; 13,914 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (524.93 ft / 518.37 ft) x 59.06 ft x (22.15 / 24.09 ft)
   (160.00 m / 158.00 m) x 18.00 m x (6.75 / 7.34 m)

Armament:
12 - 6.50" / 165 mm 43.0 cal guns - 143.30lbs / 65.00kg shells, 180 per gun
     Quick firing guns in casemate mounts, 1925 Model
     12 x Single mounts on sides, evenly spread
      12 hull mounts in casemates- Limited use in heavy seas
8 - 3.54" / 90.0 mm 50.0 cal guns - 24.25lbs / 11.00kg shells, 300 per gun
     Anti-air guns in deck and hoist mounts, 1925 Model
     4 x Single mounts on side ends, evenly spread
8 - 2.24" / 57.0 mm 60.0 cal guns - 6.61lbs / 3.00kg shells, 600 per gun
     Anti-air guns in deck mounts, 1925 Model
     2 x 2-gun mounts on centreline ends, evenly spread
     2 x 2-gun mounts on sides amidships
16 - 0.59" / 15.0 mm 70.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1925 Model
     2 x 2 row quad mounts on sides, forward deck forward
      2 raised mounts
     2 x 2 row quad mounts on sides, forward deck forward
      2 double raised mounts
Weight of broadside 1,968 lbs / 893 kg

Armour:
- Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.15" / 80 mm   336.94 ft / 102.70 m   11.75 ft / 3.58 m
   Ends:   1.38" / 35 mm   181.40 ft / 55.29 m   11.75 ft / 3.58 m
     Main Belt covers 100 % of normal length
     Main Belt inclined -12.00 degrees (positive = in)

- Hull void:
      0.00" / 0 mm   336.94 ft / 102.70 m   19.29 ft / 5.88 m

- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.38" / 35 mm   1.38" / 35 mm      1.38" / 35 mm
   2nd:   0.31" / 8 mm     -           -
   3rd:   0.31" / 8 mm     -           -
   4th:   0.31" / 8 mm     -           -

- Armoured deck - single deck:
   For and Aft decks: 1.57" / 40 mm
   Forecastle: 1.38" / 35 mm Quarter deck: 1.57" / 40 mm

- Conning towers: Forward 1.38" / 35 mm, Aft 1.38" / 35 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 3 shafts, 48,216 shp / 35,969 Kw = 26.00 kts
   Range 8,954nm at 16.00 kts
   Bunker at max displacement = 2,934 tons

Complement:
   594 - 773

Cost:
   £2.237 million / $8.950 million

Distribution of weights at normal displacement:
   Armament: 334 tons, 2.6 %
     - Guns: 334 tons, 2.6 %
   Armour: 1,425 tons, 11.3 %
     - Belts: 633 tons, 5.0 %
     - Armament: 78 tons, 0.6 %
     - Armour Deck: 682 tons, 5.4 %
     - Conning Towers: 32 tons, 0.3 %
   Machinery: 1,565 tons, 12.4 %
   Hull, fittings & equipment: 3,977 tons, 31.5 %
   Fuel, ammunition & stores: 2,109 tons, 16.7 %
   Miscellaneous weights: 3,199 tons, 25.4 %
     - Hull below water: 1,546 tons
     - Hull void weights: 50 tons
     - Hull above water: 1,364 tons
     - On freeboard deck: 15 tons
     - Above deck: 224 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     23,862 lbs / 10,824 Kg = 174.1 x 6.5 " / 165 mm shells or 2.4 torpedoes
   Stability (Unstable if below 1.00): 1.21
   Metacentric height 3.2 ft / 1.0 m
   Roll period: 13.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.34
   Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.651 / 0.660
   Length to Beam Ratio: 8.78 : 1
   'Natural speed' for length: 22.77 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 35
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: -6.56 ft / -2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   20.00 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
     - Forward deck:   30.00 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
     - Aft deck:   35.00 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
     - Quarter deck:   15.00 %, 29.53 ft / 9.00 m, 29.53 ft / 9.00 m
     - Average freeboard:      29.53 ft / 9.00 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 74.4 %
      - Above water (accommodation/working, high = better): 222.2 %
   Waterplane Area: 23,473 Square feet or 2,181 Square metres
   Displacement factor (Displacement / loading): 145 %
   Structure weight / hull surface area: 86 lbs/sq ft or 422 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.84
      - Longitudinal: 4.53
      - 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

The Bazdari (Falconeer)
is intended to be primarily a fighter launch platform to ensure air control over the fleet, preventing and disrupting opposing spotting
and torpedo attacks.

The actual airgroup is limited in design :

1 Flight (16) of Fighters, with 1 flying spare per talon of 4 for a total of 20 fighters.

One talons (1x 4) of scouts, with 1 flying spare per talon, for a total of 5 scouts

Desired 25 planes = 2000t

With aircraft operations still being in development,
designing the minimum required space is problematic,
so a a larger space is planned, allowing operations to
help verify how much is 'necessary'.

Eventually, the ship may carry 2 flights (32) with no reserves.

Deck Space : 2181/ 65 = 33 aircraft possible
31 x 80 = 2640
=1320 & 1320

Sufficient speed to keep up with the Stormbringer Class,
with high cruise speed to move around steaming formation as needed.

A heavy battery of 165mm guns and
cruiser-level armor is meant to allow it to survive a nighttime or bad
weather attack by destroyers or cruisers.

Belt covers from +2.5 to -1.0.
The shallow depth is felt acceptable
as combat is foreseen as short range.

The belt is outsloped 12 degrees
3.5 / cos(12) = 3.58

A heavy deck is fitted for both
splinter protection (up to 240) and to thwart lucky long range hits.

The upper works, save for the Casement enclosures, are unarmored, as an AoN effort.

Misc Wt :
Reserve : 50t

AD
24t - FC
25t - LR Radio
0t - SR Radio
25t - Night Fighting / Searchlights
25t - Hulesmeyer proximity detector
10t - Dedicated AC channel
10t - Squadron Plot room
100t - 'H" superstructure

OD
5t - Paravanes
10t - 2x hydraulic catapults

HAW
1320 Airgroup
11t - CO2 Compressor AC
22t - Forced Fume extraction
11t - Additional Fire Suppression

HBW
1320 Airgroup
11t - Additional fire suppression
36 - 30t Avgas in 6t doublewall tanks
10t- Additional fighter/scout munitions
11t - Additional pumps
158t - Torpedo nets

Decks
9: Flight Deck
6.5m high hanger
2.5: Armor Deck, Battery Deck (Casements)
-1.0 : Bottom Armor Belt
-2.5 :
-6.0 : Engineering
-6.49 : Double bottom
-6.75 : Keel