Parthian Ships 1928 +

[Jefgte]

...I'm sticking with just having a destroyer do the plane guard function.

Yes, but a big one.

[Kaiser Kirk]

I had been toying with a 2000 ton destroyer modification for the role, but the only advantage was a higher-than-carrier top speed, but it still lacked the range, seakeeping, and room for 'bonus' misc weight.

I may try again with a 2500 ton base, as I would prefer to pay less and be future proofed for higher speed carriers. But as Jefgte observes, this does have a reasonable secondary ability as a pocket Dido.

[Kaiser Kirk]

While I posted a 1936 Bahktiari II a bit ago, I realized I should be able to adapt the
31knot Davazdah Rohk into a Bahktiari III that can go 31 knots.
Indeed, that worked. Had to modify the hull minorly.

So...ta da the Bahktiari III.
Which since it's a different hull should probably get a new class name, but I am to lazy for that right now.

Bahktiari III, Parthia Cruiser laid down 1936

Displacement:
   10,000 t light; 10,684 t standard; 12,026 t normal; 13,099 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (545.40 ft / 538.06 ft) x 68.90 ft x (22.97 / 24.46 ft)
   (166.24 m / 164.00 m) x 21.00 m  x (7.00 / 7.46 m)

Armament:
      16 - 6.50" / 165 mm 47.0 cal guns - 176.37lbs / 80.00kg shells, 160 per gun
     Quick firing guns in turret on barbette mounts, 1935 Model
     4 x 4-gun mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      12 - 4.53" / 115 mm 47.0 cal guns - 55.12lbs / 25.00kg shells, 358 per gun
     Dual purpose guns in deck and hoist mounts, 1931 Model
     4 x 2-gun mounts on side ends, evenly spread
     2 x 2-gun mounts on centreline ends, evenly spread
      2 double raised mounts
      16 - 1.46" / 37.0 mm 70.0 cal guns - 1.72lbs / 0.78kg shells, 3,000 per gun
     Breech loading guns in deck and hoist mounts, 1929 Model
     4 x 2 row quad mounts on side ends, evenly spread
      4 raised mounts
      12 - 0.91" / 23.0 mm 90.0 cal guns - 0.44lbs / 0.20kg shells, 5,000 per gun
     Breech loading guns in deck mounts, 1929 Model
     6 x Twin mounts on sides, evenly spread
      6 double raised mounts
      Weight of broadside 3,516 lbs / 1,595 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.72" / 120 mm   349.74 ft / 106.60 m   10.20 ft / 3.11 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length
     Main Belt inclined -15.00 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:   6.50" / 165 mm   2.17" / 55 mm      5.12" / 130 mm
   2nd:   1.38" / 35 mm   0.98" / 25 mm      0.98" / 25 mm
   3rd:   0.31" / 8 mm         -               -
   4th:   0.31" / 8 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 2.25" / 57 mm
   Forecastle: 1.38" / 35 mm  Quarter deck: 1.97" / 50 mm

   - Conning towers: Forward 6.50" / 165 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 81,429 shp / 60,746 Kw = 31.00 kts
   Range 8,220nm at 16.00 kts
   Bunker at max displacement = 2,416 tons

Complement:
   573 - 746

Cost:
   £5.057 million / $20.230 million

Distribution of weights at normal displacement:
   Armament: 871 tons, 7.2 %
      - Guns: 871 tons, 7.2 %
   Armour: 2,406 tons, 20.0 %
      - Belts: 711 tons, 5.9 %
      - Armament: 615 tons, 5.1 %
      - Armour Deck: 1,006 tons, 8.4 %
      - Conning Tower: 73 tons, 0.6 %
   Machinery: 2,285 tons, 19.0 %
   Hull, fittings & equipment: 3,970 tons, 33.0 %
   Fuel, ammunition & stores: 2,026 tons, 16.8 %
   Miscellaneous weights: 469 tons, 3.9 %
      - Hull below water: 66 tons
      - Hull void weights: 70 tons
      - Hull above water: 30 tons
      - On freeboard deck: 115 tons
      - Above deck: 188 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     14,837 lbs / 6,730 Kg = 108.3 x 6.5 " / 165 mm shells or 2.0 torpedoes
   Stability (Unstable if below 1.00): 1.11
   Metacentric height 3.5 ft / 1.1 m
   Roll period: 15.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.67
   Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and small transom stern
   Block coefficient (normal/deep): 0.494 / 0.506
   Length to Beam Ratio: 7.81 : 1
   'Natural speed' for length: 25.19 kts
   Power going to wave formation at top speed: 60 %
   Trim (Max stability = 0, Max steadiness = 100): 49
   Bow angle (Positive = bow angles forward): 16.00 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 %,  25.59 ft / 7.80 m,  22.97 ft / 7.00 m
      - Forward deck:   34.00 %,  22.97 ft / 7.00 m,  20.67 ft / 6.30 m
      - Aft deck:   31.00 %,  20.67 ft / 6.30 m,  20.67 ft / 6.30 m
      - Quarter deck:   15.00 %,  20.67 ft / 6.30 m,  20.67 ft / 6.30 m
      - Average freeboard:      21.73 ft / 6.62 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 87.0 %
      - Above water (accommodation/working, high = better): 177.9 %
   Waterplane Area: 25,161 Square feet or 2,337 Square metres
   Displacement factor (Displacement / loading): 118 %
   Structure weight / hull surface area: 115 lbs/sq ft or 560 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.83
      - Longitudinal: 1.84
      - Overall: 0.90
   Caution: Hull subject to strain in open-sea
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room

Updated Bahktiari class


Armor

Protection

Magazine Box forms thicker Belt/Deck plates

Horizontal @ waterline :
Magazines : 185 + incline
Machinery : 120 + incline

Vertical.
Magazines : 115
Machinery : 50

Belt Armor
120 mm, +65mm abreast magazines
Covers from 1.2m to -1.8m
Outsloped 15 degrees
3.00/cos(15) = 3.1058 = 3.11


Deck armor
50mm citadel + 65mm Magizine Box  thickened deck over magazine.
  107t   65mm  magazine box
  899t  35/50/50mm deck
------
1,006t needeed

1,006t paid


Misc

Reserve
70t

AD
88t - FC 1930
25t - LR radio
0t - SR Radio
25t - Hulesmeyer
25t - Air Search Radar
25t - Searchlight Tower (NF)

OD
5t - paravanes
100t - 4x floatplanes ( 2 fighter, 2 scout typically)
10t - 2x Catapults

HAW
20t - hanger in stern
10t - CO2 Compressor AC

HBW
10t - Ex Fire Ext
10t - Ex Pumps
15t - Hydrophones
31t - Auxiliary Diesel generator 1000kw
46nm of fuel is Diesel

Decks
+6.30  Weather Deck
+3.70    Battery Deck
+1.20  Armor Deck, main deck
        -1.8 bottom main belt
-1.30  1st Platform Deck
-4.80   Engineering
-6.12   Double Bottom
-7.00  Keel

[Kaiser Kirk]

I was going to build the previously posted Manzikert VII version in 1936,
but that design is 1935, not 1936.
So I updated it to 1936 and named it the X.

Manzikert X, Parthia Cruiser laid down 1936

Displacement:
   10,000 t light; 10,720 t standard; 12,064 t normal; 13,139 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (545.40 ft / 538.06 ft) x 73.00 ft x (21.85 / 23.27 ft)
   (166.24 m / 164.00 m) x 22.25 m  x (6.66 / 7.09 m)

Armament:
      8 - 8.46" / 215 mm 47.0 cal guns - 385.81lbs / 175.00kg shells, 173 per gun
     Breech loading guns in turret on barbette mounts, 1933 Model
     2 x 4-gun mounts on centreline ends, evenly spread
      12 - 4.53" / 115 mm 47.0 cal guns - 55.12lbs / 25.00kg shells, 358 per gun
     Dual purpose guns in deck and hoist mounts, 1929 Model
     4 x 2-gun mounts on side ends, evenly spread
     2 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts
      32 - 1.18" / 30.0 mm 80.0 cal guns - 0.95lbs / 0.43kg shells, 3,000 per gun
     Breech loading guns in deck and hoist mounts, 1929 Model
     16 x 2-gun mounts on sides, evenly spread
      12 raised mounts
      Weight of broadside 3,778 lbs / 1,714 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.53" / 115 mm   349.74 ft / 106.60 m   10.20 ft / 3.11 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length
     Main Belt inclined -15.00 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:   7.48" / 190 mm   2.17" / 55 mm      5.12" / 130 mm
   2nd:   1.18" / 30 mm   0.98" / 25 mm      0.98" / 25 mm
   3rd:   0.31" / 8 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.26" / 57 mm
   Forecastle: 1.38" / 35 mm  Quarter deck: 1.97" / 50 mm

   - Conning towers: Forward 6.50" / 165 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 81,993 shp / 61,167 Kw = 31.00 kts
   Range 8,170nm at 16.00 kts
   Bunker at max displacement = 2,419 tons

Complement:
   575 - 748

Cost:
   £5.196 million / $20.782 million

Distribution of weights at normal displacement:
   Armament: 938 tons, 7.8 %
      - Guns: 938 tons, 7.8 %
   Armour: 2,232 tons, 18.5 %
      - Belts: 687 tons, 5.7 %
      - Armament: 404 tons, 3.3 %
      - Armour Deck: 1,068 tons, 8.9 %
      - Conning Tower: 74 tons, 0.6 %
   Machinery: 2,301 tons, 19.1 %
   Hull, fittings & equipment: 4,080 tons, 33.8 %
   Fuel, ammunition & stores: 2,064 tons, 17.1 %
   Miscellaneous weights: 450 tons, 3.7 %
      - Hull below water: 51 tons
      - Hull void weights: 60 tons
      - Hull above water: 30 tons
      - On freeboard deck: 115 tons
      - Above deck: 194 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     14,864 lbs / 6,742 Kg = 49.0 x 8.5 " / 215 mm shells or 2.1 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 3.7 ft / 1.1 m
   Roll period: 15.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.61
   Seaboat quality  (Average = 1.00): 1.05

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and small transom stern
   Block coefficient (normal/deep): 0.492 / 0.503
   Length to Beam Ratio: 7.37 : 1
   'Natural speed' for length: 25.27 kts
   Power going to wave formation at top speed: 61 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   Bow angle (Positive = bow angles forward): 16.00 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 %,  25.59 ft / 7.80 m,  22.97 ft / 7.00 m
      - Forward deck:   30.00 %,  22.97 ft / 7.00 m,  20.67 ft / 6.30 m
      - Aft deck:   35.00 %,  20.67 ft / 6.30 m,  20.67 ft / 6.30 m
      - Quarter deck:   15.00 %,  20.67 ft / 6.30 m,  20.67 ft / 6.30 m
      - Average freeboard:      21.68 ft / 6.61 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 89.0 %
      - Above water (accommodation/working, high = better): 186.8 %
   Waterplane Area: 26,600 Square feet or 2,471 Square metres
   Displacement factor (Displacement / loading): 118 %
   Structure weight / hull surface area: 117 lbs/sq ft or 569 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.82
      - Longitudinal: 1.91
      - 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

Warning: Beam between bulkheads too wide

Manzikert X  Light Armored Cruiser
Named for Victories against Greco-Roman Forces.
* Indicates a Caeser or Emperor defeated

Manzikert*
Carrahae*
Fraaspa
Nisibis
Misiche
Barbalisso
Edessa*
Calliniicum*
Callinicum
Samarra*
Antioch*


Armor


Protection

Magazine Box forms thicker Belt/Deck plates

Horizontal @ waterline :
Magazines : 180 + incline
Machinery : 115 + incline

Vertical.
Magazines : 115
Machinery : 50

Belt Armor
115mm, +65mm abreast magazines
Covers from 1.2m to -1.8m
Outsloped 15 degrees
3.00/cos(15) = 3.1058 = 3.11

Deck armor
118t   65mm  magazine box
950t   35/50/50mm deck
------
1068t needeed

1068t paid


Misc

Reserve
60t

AD
94t - FC 1930
25t - LR radio
0t - SR Radio
25t - Hulesmeyer
25t - Air Search Radar
25t - Searchlight Tower (NF)

OD
5t paravanes
100t 4x floatplanes (2 fighter, 2 scout typically)
10t - 2x Catapults

HAW
20t - hanger in stern
10t - CO2 Compressor AC

HBW
10t - Ex Fire Ext
10t - Ex Pumps
31t - Auxiliary Diesel generator 1000kw
70nm of fuel is Diesel

Decks
+6.30  Weather Deck
+3.70    Battery Deck
+1.20  Armor Deck, main deck
        -1.8 bottom main belt
-1.30  1st Platform Deck
-4.80   Engineering
-5.81 Double Bottom
-6.66  Keel

[Kaiser Kirk]

The build schedule gets easier starting in 1937.

For 1936.5 there's some room as all the carriers have finished and the Parthians are evaluating them in conjunction with the most modern aircraft before laying down others.

I am reviewing US Cruisers and other sources to figure out just what sort of flight deck length is usable to what degree. Also want to try to tie the ship length and flight deck length together in the American designs to get a ratio. We've got a model set up in Aviation Ships, but it only specifies the hanger area, not the flight deck length. Overall, identifying how useful various flight deck lengths are is something we have not determined.

I also need to work on my CLAA designs. Some of the Ratatat designs border on the possible.
While I normally stay away from deck-mapping ships, for what I want it may be necessary.

The Planeguard situation...I seem to have a planeguard version of the Xwarg class minelayer mostly finished. But the machinery weight is currently 49.1%  so need to tinker there some more.
Plus I'm tempted to try a 3000 ton cruiser for the role. The Atossa variant above is decent, but can I eek out something better ?

I've been meaning to do a new gunboat design, that will be 1937.

Then there's the Frawar Coastal Battleship. The first wound up the new training battleship, and I couldn't free up production for more.

I will close out 1936 here, but I think I'll do the 1937 designs in a new thread.

[Kaiser Kirk]

This is the update of the Frawar "Bastion" class Coastal Battleship.

The biggest difference is the new 300L47 replaces the old 333L43.
While USS Alaska's 12" were supposedly equal or better than the old 14",
these are not quite 'as good'

The belt penetration is <1/2" less, while deck penetration is <1/5" more.
Basically 96% the penetration vs. belt, and 104% vs. deck.

Ship size drops from 19,000 to 18,000. Draft looses 1m.
Belt armor gets a bit thinner, but a magazine box is added.
Additional bulkhead is added to the TDS, bringing it from 38 to 57mm, with more depth.

Conceptually, these are not meant to face off against the main battlewagons of the world.
However, the armor level is sufficient to stop main battery rounds at range.

The expectation is these are more rear area, fending off raiders, convoy defense, or providing fire support, or serving as 2nd line support for the older dreadnaughts of the Atlantic & Pacific fleets.

Alternately, the Frawar design is still good and could be continued.

Drubust "Fortress", Parthia Battleship laid down 1936

Displacement:
    18,000 t light; 19,429 t standard; 20,662 t normal; 21,649 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (459.32 ft / 452.76 ft) x 88.58 ft (Bulges 95.14 ft) x (27.89 / 29.06 ft)
    (140.00 m / 138.00 m) x 27.00 m (Bulges 29.00 m)  x (8.50 / 8.86 m)

Armament:
      8 - 11.81" / 300 mm 47.0 cal guns - 1,080.27lbs / 490.00kg shells, 140 per gun
      Breech loading guns in turret on barbette mounts, 1926 Model
      2 x 4-gun mounts on centreline ends, evenly spread
      16 - 5.12" / 130 mm 47.0 cal guns - 85.98lbs / 39.00kg shells, 320 per gun
      Dual purpose guns in deck and hoist mounts, 1930 Model
      6 x 2-gun mounts on sides, evenly spread
        2 raised mounts
      2 x 2-gun mounts on centreline ends, evenly spread
        2 raised mounts
      24 - 1.46" / 37.0 mm 70.0 cal guns - 1.72lbs / 0.78kg shells, 3,000 per gun
      Anti-air guns in deck and hoist mounts, 1929 Model
      4 x 2 row quad mounts on side ends, evenly spread
        4 raised mounts
      2 x 2 row quad mounts on sides, forward deck centre
        2 double raised mounts
      24 - 0.91" / 23.0 mm 90.0 cal guns - 0.44lbs / 0.20kg shells, 5,000 per gun
      Anti-air guns in deck mounts, 1929 Model
      12 x Twin mounts on sides, evenly spread
        12 double raised mounts
      Weight of broadside 10,070 lbs / 4,568 kg

Armour:
  - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    11.8" / 300 mm    298.82 ft / 91.08 m    13.88 ft / 4.23 m
    Ends:    1.38" / 35 mm    153.90 ft / 46.91 m    12.01 ft / 3.66 m
    Upper:    1.97" / 50 mm    298.82 ft / 91.08 m    13.58 ft / 4.14 m
      Main Belt covers 102 % of normal length
      Main Belt inclined -15.00 degrees (positive = in)

  - Torpedo Bulkhead - Additional damage containing bulkheads:
        2.24" / 57 mm    298.82 ft / 91.08 m    28.61 ft / 8.72 m
    Beam between torpedo bulkheads 59.06 ft / 18.00 m

  - Hull Bulges:
        0.35" / 9 mm    301.84 ft / 92.00 m    22.41 ft / 6.83 m

  - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    12.2" / 310 mm    4.92" / 125 mm        10.0" / 255 mm
    2nd:    2.56" / 65 mm    1.57" / 40 mm        1.97" / 50 mm
    3rd:    0.79" / 20 mm    0.31" / 8 mm        0.31" / 8 mm
    4th:    0.31" / 8 mm          -                  -

  - Armoured deck - multiple decks:
    For and Aft decks: 5.66" / 144 mm
    Forecastle: 1.38" / 35 mm  Quarter deck: 4.33" / 110 mm

  - Conning towers: Forward 10.04" / 255 mm, Aft 2.56" / 65 mm

Machinery:
    Oil fired boilers, steam turbines,
    Geared drive, 4 shafts, 54,160 shp / 40,404 Kw = 24.00 kts
    Range 7,288nm at 14.00 kts
    Bunker at max displacement = 2,221 tons

Complement:
    861 - 1,120

Cost:
    £8.609 million / $34.436 million

Distribution of weights at normal displacement:
    Armament: 1,936 tons, 9.4 %
      - Guns: 1,936 tons, 9.4 %
    Armour: 7,584 tons, 36.7 %
      - Belts: 2,663 tons, 12.9 %
      - Torpedo bulkhead: 710 tons, 3.4 %
      - Bulges: 89 tons, 0.4 %
      - Armament: 1,091 tons, 5.3 %
      - Armour Deck: 2,828 tons, 13.7 %
      - Conning Towers: 204 tons, 1.0 %
    Machinery: 1,520 tons, 7.4 %
    Hull, fittings & equipment: 6,269 tons, 30.3 %
    Fuel, ammunition & stores: 2,662 tons, 12.9 %
    Miscellaneous weights: 692 tons, 3.3 %
      - Hull below water: 187 tons
      - Bulge void weights: 85 tons
      - Hull above water: 36 tons
      - On freeboard deck: 30 tons
      - Above deck: 354 tons

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      31,731 lbs / 14,393 Kg = 38.5 x 11.8 " / 300 mm shells or 6.4 torpedoes
    Stability (Unstable if below 1.00): 1.19
    Metacentric height 5.7 ft / 1.7 m
    Roll period: 16.7 seconds
    Steadiness    - As gun platform (Average = 50 %): 70 %
            - Recoil effect (Restricted arc if above 1.00): 0.52
    Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
    Hull has a flush deck,
      a ram bow and a cruiser stern
    Block coefficient (normal/deep): 0.602 / 0.605
    Length to Beam Ratio: 4.76 : 1
    'Natural speed' for length: 21.28 kts
    Power going to wave formation at top speed: 62 %
    Trim (Max stability = 0, Max steadiness = 100): 69
    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 %,  23.62 ft / 7.20 m,  21.16 ft / 6.45 m
      - Forward deck:    32.00 %,  21.16 ft / 6.45 m,  18.70 ft / 5.70 m
      - Aft deck:    34.00 %,  18.70 ft / 5.70 m,  18.70 ft / 5.70 m
      - Quarter deck:    14.00 %,  18.70 ft / 5.70 m,  19.69 ft / 6.00 m
      - Average freeboard:        19.85 ft / 6.05 m

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 94.4 %
        - Above water (accommodation/working, high = better): 125.5 %
    Waterplane Area: 29,388 Square feet or 2,730 Square metres
    Displacement factor (Displacement / loading): 110 %
    Structure weight / hull surface area: 172 lbs/sq ft or 838 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0.89
        - Longitudinal: 2.74
        - Overall: 1.00
    Adequate machinery, storage, compartmentation space
    Excellent accommodation and workspace room
    Ship has slow, easy roll, a good, steady gun platform

The 'Drubust' is a smaller version of the 'Frawar'.
Armed with the new heavy-shelled 300mm instead of the older 333mm.


The new gun has 95% of the belt penetration and 104% of the deck penetration. That works out to about 10-15mm belt and 1-4mm deck. The smaller shell will have a smaller bursting charge, but more can be carried.

The protective deck is dispensed with, but a magazine box added instead, and a stronger TDS.

Length (while longer than Sverige) is constrained to fit in common merchant docks (141m), and a shallower draft is designed.

The class retains the armored upper citadel to exclude HE and SAP shells and bombs, as it's more isolated deployments may mean more saturation attacks. Likewise, as it may be in an isolated anchorage, torpedo nets are shipped for defense against aerial attacks. With the presence of the fleet netlayers, this may not be needed, and they may be removed in the future.

Still designed as a 'cheap' replacement to the old predreadnaughts capable of supporting the territorial fleets and providing convoy escorts. These could also oppose similar byzantine ships, but would compete in the build order with the Armored cruisers. 


Armor

Horizontal @ waterline
Magazine : (300+57/2+65/2) = 360mm+slope
Machinery : (300+57/2) = 328mm+slope

Vertical over citadel
Magazine : (35/2+100+65/2) = 150
Machinery : (35/2 + 100) = 118


35mm bomb deck is above 2 deck space, excluding HE, and detonating AP prior to main deck
Upper Belt covers from freeboard to top of main belt.

The TDS rises to seal to the bottom of the armor deck, serving as a splinter and explosion barrier.

Upper Belt :

Upper Belt is 4m high.
It is outsloped at 15%
4/cos(15) = 4.1411 = 4.14


Main Belt :
Covers from 1.7m above WL to -2.5m below WL, a total height of 4.2m.
The first 3.2m is full thickness, the last 1m tapers to 230mm.

volume
960    = 3.2 * 300
265    =  ((300-230)/2 * 1) + (1*230)
-----
1225 volume
divide by 300mm thickness
4.0833m high
It is outsloped at 15%.
4.0833/cos(15) = 4.2273 = 4.23

End Belts : These are thickened slopes for protective decks,
so 75mm slopes fore, and 145mm slopes aft.

Deck  142.9

  621t    upper armored deck  35mm
2,063t    main armored deck  40/100/110mm
    143t    magazine box 65mm
--------
2,827t    Needed
2,878t    modeled


The upper deck thereby serves as a bomb deck to activate and detonate the shells and bombs short of the main deck.

TDS : TDS rises to seal to the bottom of the protective deck at +0.7 above WL

Miscellaneous Wt

Reserve : 85t

AD
194t - Fire Control 1930
25t - LR Radio
0t -  SR Radio
10t - EW Station
25t - Hulesmeyer
25t - AS Radar
25t - Searchlight Tower (NF)

OD
5t - Paravanes
20t- Scout Plane - on stern
5t - Gunpowder Cat

HAW
18t - Extra Fire Extinguishers
18t - CO2 Compressor AC

HBW
31t - Aux DE Generator 1000kw 60nm fuel
18t - Extra Pumps
138t - Torpedo Nets

Decks
+5.7  Weather deck -  35mm
+3.2  Battery Deck
        +1.7 top of main belt, bottom of upper belt
+0.7  Armor Deck 105mm, Top TDS
-1.8    2nd platform deck
          -2.5  bottom of main belt
-4.30  1st platform deck
-7.00  Engineering Deck
-8.0    Double bottom, bottom of torpedo defenses
-8.5    Keel

[Kaiser Kirk]

Here is the revised planeguard frigate from above.

I wanted a lower L:B, and to better arrange the 37mm battery, so it got wider.
Overall it's armed like a destroyer, and it's like a super-destroyer.
It's only 500 tons more than the 2500ton Karstars, but much better seakeeping, and it has the 8000nm @ 18knots needed to match the carriers without refueling.

Atossa III, Parthian Planeguard Frigate laid down 1936

Displacement:
   3,000 t light; 3,266 t standard; 4,166 t normal; 4,887 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (442.91 ft / 436.35 ft) x 52.49 ft x (15.16 / 16.88 ft)
   (135.00 m / 133.00 m) x 16.00 m  x (4.62 / 5.15 m)

Armament:
      8 - 4.53" / 115 mm 47.0 cal guns - 55.12lbs / 25.00kg shells, 324 per gun
     Dual purpose guns in deck and hoist mounts, 1931 Model
     4 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      24 - 1.46" / 37.0 mm 70.0 cal guns - 1.72lbs / 0.78kg shells, 3,200 per gun
     Anti-air guns in deck and hoist mounts, 1930 Model
     4 x 2 row quad mounts on side ends, evenly spread
     2 x 2 row quad mounts layout not set
      2 double raised mounts
      24 - 0.91" / 23.0 mm 90.0 cal guns - 0.44lbs / 0.20kg shells, 5,000 per gun
     Anti-air guns in deck mounts, 1930 Model
     2 x 2 row quad mounts on sides amidships
      2 raised mounts
     8 x Twin mounts on sides, evenly spread
      8 double raised mounts
      Weight of broadside 493 lbs / 224 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.38" / 35 mm   0.59" / 15 mm      0.79" / 20 mm
   2nd:   0.79" / 20 mm   0.31" / 8 mm      0.31" / 8 mm
   3rd:   0.31" / 8 mm         -               -

   - Box over magazines:
   0.98" / 25 mm

   - Conning towers: Forward 0.79" / 20 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 3 shafts, 43,894 shp / 32,745 Kw = 31.00 kts
   Range 8,008nm at 18.00 kts
   Bunker at max displacement = 1,621 tons

Complement:
   259 - 337

Cost:
   £1.723 million / $6.892 million

Distribution of weights at normal displacement:
   Armament: 147 tons, 3.5 %
      - Guns: 147 tons, 3.5 %
   Armour: 74 tons, 1.8 %
      - Armament: 38 tons, 0.9 %
      - Armour Deck: 32 tons, 0.8 %
      - Conning Tower: 4 tons, 0.1 %
   Machinery: 1,232 tons, 29.6 %
   Hull, fittings & equipment: 1,356 tons, 32.6 %
   Fuel, ammunition & stores: 1,166 tons, 28.0 %
   Miscellaneous weights: 191 tons, 4.6 %
      - Hull below water: 3 tons
      - Hull void weights: 30 tons
      - Hull above water: 23 tons
      - On freeboard deck: 40 tons
      - Above deck: 95 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4,068 lbs / 1,845 Kg = 87.7 x 4.5 " / 115 mm shells or 1.0 torpedoes
   Stability (Unstable if below 1.00): 1.29
   Metacentric height 3.0 ft / 0.9 m
   Roll period: 12.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.27
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and small transom stern
   Block coefficient (normal/deep): 0.420 / 0.442
   Length to Beam Ratio: 8.31 : 1
   'Natural speed' for length: 22.75 kts
   Power going to wave formation at top speed: 61 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   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 %,  22.97 ft / 7.00 m,  20.51 ft / 6.25 m
      - Forward deck:   30.00 %,  20.51 ft / 6.25 m,  18.04 ft / 5.50 m
      - Aft deck:   35.00 %,  18.04 ft / 5.50 m,  18.04 ft / 5.50 m
      - Quarter deck:   15.00 %,  18.04 ft / 5.50 m,  18.04 ft / 5.50 m
      - Average freeboard:      19.10 ft / 5.82 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 111.4 %
      - Above water (accommodation/working, high = better): 199.9 %
   Waterplane Area: 14,607 Square feet or 1,357 Square metres
   Displacement factor (Displacement / loading): 130 %
   Structure weight / hull surface area: 60 lbs/sq ft or 294 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.67
      - Longitudinal: 1.87
      - Overall: 0.75
   Caution: Hull subject to strain in open-sea
   Cramped 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

Needing a vessel for Planeguard duty,
the choice was between a destroyer dedicated to the purpose,
or a light cruiser or frigate

The choice was made for a frigate with speed similar to the carriers,
the same range and cruise speed.

I tried to fit the 8x130 on this hull, but felt keeping a 1.2 seakeeping
was more important for this role. The vessel should never be in surface
combat, so the heavier 130mm is not needed for the role.

The final vessel is armed much like a large destroyer- and it's only 500 tons more than the Karstar class, but with much better range, seakeeping, and rescue potential.

Looking for historical examples to ensure the Length can fit 4 centerline and 4 wing mounts, and the  width is sufficient to fit the quad 37s in the 'wing' mounts.

The IJN Yubari was 435ft (-1ft), with 4 x 5.5 mounts and 2x TT2 21". The Torpedo
tubes should take up 8m each, more than the 37mm quads in "C" and "W".
The plane on the earlier version has been deleted.

The RM Luigi Cadorna had twin 6" on centerline and twin 90mm AA sponsoned on the sides. Seems about right, 50.8ft, 15.66m. USS Atlanta was 16.1m.

The 8:1 Length to Beam should help turning radius.

This version prioritized stability and seakeeping to make it a good platform to recover from.


Firepower is slightly greater than the largest destroyer, but seakeeping is much better.These ships, tailing behind the carrier, will provide heavy AA screening power.
 
Armor is minimal, with bulletproof facings, and weatherproof hoists.

A single amidships aircraft is fitted, which can be launched to spot for downed aircraft.
The amphibian can also fly the recovered pilot back to the host ship.

Two rescue motor launches are added to the ships boats. These high speed launches have additional warming heaters, line launcher and even hoist nets to pluck aircrew from waters cold or hot.

Two long 'excavator' type arms are fitted with both hand & footholds and large seive type baskets, with the idea of being able to dip aircrew out of the water.



Resv : 30t

AD
15t  FC
25t  LR Radio
0t   SR Radio
25t  Air Search  Rada
25t  Hulesmeyer
 

OD
5t - Paravanes
20t  - 2 x 10t rescue motor launches (unarmed)
10t - Port & Starboard rescue cranes (excavator arms with attachments)
5t - Additional searchlights, floodlights, in Red/Blue/White to assist in searches.

HAW
3t - CO2 Compressor AC
20t - Medical Wards

HBW
3t - Improved Pumps

[Kaiser Kirk]

The Frawar and Drubust before are more 2nd rate battleships which would replace the old Predreadnaughts in the Atlantic and Pacific fleets, as well as serve on isolated stations.

However, I wondered about a more economical, more Coastal Battleship concept.
This could more reasonably be stationed in distant harbors.


Far more 'Coastal' this has a shallower draft and Diesel-Electric drive for
manueverability.   

Downsides - much more vulnerable to submarines and torpedoes.
Upsides - 2/3 the cost of the larger version.
Downside - no longer resistant to Dreadnaught firepower.
Upside - Still devasting to anything not a dreadnaught.

Drubust "Fortress", Parthian Coastal Battleship laid down 1937

Displacement:
   12,500 t light; 14,019 t standard; 14,571 t normal; 15,013 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (462.37 ft / 456.04 ft) x 78.74 ft x (21.85 / 22.41 ft)
   (140.93 m / 139.00 m) x 24.00 m  x (6.66 / 6.83 m)

Armament:
      8 - 11.81" / 300 mm 47.0 cal guns - 1,080.27lbs / 490.00kg shells, 160 per gun
     Breech loading guns in turret on barbette mounts, 1934 Model
     2 x 4-gun mounts on centreline ends, evenly spread
      16 - 5.12" / 130 mm 47.0 cal guns - 85.98lbs / 39.00kg shells, 320 per gun
     Dual purpose guns in deck and hoist mounts, 1931 Model
     6 x 2-gun mounts on sides, evenly spread
      2 raised mounts
     2 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts
      8 - 1.46" / 37.0 mm 70.0 cal guns - 1.72lbs / 0.78kg shells, 6,000 per gun
     Anti-air guns in deck and hoist mounts, 1929 Model
     2 x 2 row quad mounts on centreline ends, evenly spread
      2 double raised mounts
      24 - 1.46" / 37.0 mm 70.0 cal guns - 1.72lbs / 0.78kg shells, 6,000 per gun
     Anti-air guns in deck and hoist mounts, 1929 Model
     4 x 2 row quad mounts on side ends, evenly spread
      4 raised mounts
     2 x 2 row quad mounts on sides amidships
      2 double raised mounts
      16 - 0.91" / 23.0 mm 90.0 cal guns - 0.44lbs / 0.20kg shells, 8,000 per gun
     Anti-air guns in deck mounts, 1929 Model
     8 x Twin mounts on sides, evenly spread
      8 double raised mounts
      Weight of broadside 10,080 lbs / 4,572 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7.87" / 200 mm   296.42 ft / 90.35 m   9.19 ft / 2.80 m
   Ends:   1.97" / 50 mm   159.58 ft / 48.64 m   9.19 ft / 2.80 m
   Upper:   2.95" / 75 mm   296.42 ft / 90.35 m   8.20 ft / 2.50 m
     Main Belt covers 100 % 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:   10.2" / 260 mm   3.35" / 85 mm      7.28" / 185 mm
   2nd:   2.56" / 65 mm   1.38" / 35 mm      1.97" / 50 mm
   3rd:   0.79" / 20 mm   0.31" / 8 mm      0.79" / 20 mm
   4th:   0.79" / 20 mm   0.31" / 8 mm      0.79" / 20 mm
   5th:   0.31" / 8 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 4.19" / 107 mm
   Forecastle: 1.38" / 35 mm  Quarter deck: 2.17" / 55 mm

   - Conning towers: Forward 8.27" / 210 mm, Aft 1.38" / 35 mm

Machinery:
   Diesel Internal combustion generators,
   Electric motors, 3 shafts, 20,800 shp / 15,517 Kw = 20.00 kts
   Range 3,796nm at 14.00 kts
   Bunker at max displacement = 994 tons

Complement:
   663 - 862

Cost:
   £7.147 million / $28.589 million

Distribution of weights at normal displacement:
   Armament: 1,943 tons, 13.3 %
      - Guns: 1,943 tons, 13.3 %
   Armour: 4,149 tons, 28.5 %
      - Belts: 1,383 tons, 9.5 %
      - Armament: 721 tons, 5.0 %
      - Armour Deck: 1,920 tons, 13.2 %
      - Conning Towers: 124 tons, 0.9 %
   Machinery: 577 tons, 4.0 %
   Hull, fittings & equipment: 5,049 tons, 34.7 %
   Fuel, ammunition & stores: 2,071 tons, 14.2 %
   Miscellaneous weights: 783 tons, 5.4 %
      - Hull below water: 360 tons
      - Hull void weights: 75 tons
      - Hull above water: 24 tons
      - On freeboard deck: 30 tons
      - Above deck: 294 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     20,544 lbs / 9,318 Kg = 24.9 x 11.8 " / 300 mm shells or 2.9 torpedoes
   Stability (Unstable if below 1.00): 1.22
   Metacentric height 5.0 ft / 1.5 m
   Roll period: 14.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.80
   Seaboat quality  (Average = 1.00): 1.31

Hull form characteristics:
   Hull has rise forward of midbreak,
     a ram bow and a round stern
   Block coefficient (normal/deep): 0.650 / 0.653
   Length to Beam Ratio: 5.79 : 1
   'Natural speed' for length: 21.36 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 54
   Bow angle (Positive = bow angles forward): 15.00 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 %,  23.62 ft / 7.20 m,  21.16 ft / 6.45 m
      - Forward deck:   30.00 %,  21.16 ft / 6.45 m,  18.70 ft / 5.70 m
      - Aft deck:   35.00 %,  10.83 ft / 3.30 m,  10.83 ft / 3.30 m
      - Quarter deck:   15.00 %,  10.83 ft / 3.30 m,  10.83 ft / 3.30 m
      - Average freeboard:      15.82 ft / 4.82 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 70.6 %
      - Above water (accommodation/working, high = better): 118.8 %
   Waterplane Area: 27,508 Square feet or 2,556 Square metres
   Displacement factor (Displacement / loading): 107 %
   Structure weight / hull surface area: 165 lbs/sq ft or 805 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 2.01
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily


              S2             [S4]            S6
                  [ b ]        (d)           [f]
                *       *                 *      *
A [C1](a)                                        (h) C2  B                AC     
                *       *                 *      *
                   [c]        (e)            [g]
              P3              [P5]              P7

A/B : 300mm
C/S/P : 130mm
a-h  : 37mm
* : GAST 23mm mount. Double up.
[ ] = super imposed
( ) = double super



Armor

The armor is arranged in an upper citadel to exclude Bombs and HE/SAP shells, and a main citadel meant to stop non-battleship shells.

A box over the magazine and machinery thickens the deck and belt over those areas

Citadel Vitals
Belt : 255   (200+55)
Deck : 127  (35/2+55+55)

Citadel non-vitals
Belt : 200
Deck : 72 (35/2+55)


Belt :

75mm upper belt to exclude HE/SAP

200mm main belt over 65% of length.
Thickened to 255mm over magazines & machinery (61.08m)

50mm end belts


Deck :
567t     upper armor deck        0/35/0
1060t   main armor deck       35/55/55
293t     Magazine & machinery box 55mm
------
1,920t  needed
1,920t  modeled

Engine :
Diesel : 30% more, Electric 25% more = 55%
557*.55 = 317.35 = 317

Range : +75% diesel, +15% Electric = +90%
3796*1.90 = 7212.4 nm

Misc

Reserve :
75t

AD :
194t : FC
25t  : LR Radio
0t : SR Radio
25t : Searchlight Tower (NF)
25t : Hulesmeyer
25t : AS Radar

OD :
5t Paravanes
20t Seaplane
5t Gunpowder Cat.

HAW :
12t Extra Fire Suppresion
12t CO2 Compressor AC

HBW :
12t - Extra Pumps
31t - 1000kw Aux DE engines
317t - DE drive and turboelectric generators

Deck Levels
5.7 - Forecastle (unprotected)
3.3 - Weather Deck - Upper Armor Deck 35mm
         Upper Armor Belt
0.8   -  Main Deck - Armor Deck 55mm
-1.7   - 1st Platform Deck
      -2m lower main armor belt
-5.2  -  Engineering Deck
-6.39 - Double Bottom
-6.66 - Keel


Edits : trying to get rid of the bolding.

[Jefgte]

Drubust is an economical platform for 8x300 sailing at 20kts.

[The Rock Doctor]

It does seem like a pretty narrow hull for a quad 300mm mounting, but if SS likes it, so be it.

[Jefgte]

It has characteristics that remind me of the PDN Kniaz Souvarov but with 1936 technologies and ... 2T4x300

[Kaiser Kirk]

It does seem like a pretty narrow hull for a quad 300mm mounting, but if SS likes it, so be it.

Well, the French Normandie class with quad 340mms was a 27m beam with a BC of 0.612. This has 300mm and 24m and a BC of 0.65. So it's a bit chunkier abreast the turrets too.  The Deutschland class fit triple 280s on 20.7m. Though I lack a BC for them, from the deck plan I'd guess more in the 0.5 range, and well under 0.6m.
Plus the additional machinery pushes the turrets further out the ends, away from the widest point amidships. Looking at these comparisons, I think the beam is reasonable.

[Kaiser Kirk]

On a related subject, I need a new normal sized gunboat.

It is interesting to see how Jefgte's nice 30 knot Cruiser as Destroyer Escort went a completely different route than what I want for my gunboat. We are often times much closer in concept :)

The Sibari class gunboats were well liked but too expensive for what the Parthians wanted. The Hukar class was a cutdown version that tried to meet minimum requirements. With 3 direct fire 165mm and 1 indirect fire 163mm HOW, they should be very good at supporting forces ashore.

The Pasban has similar armament, but with the new heavy shell 165mm and is slightly larger.
Powerplant is D-E, rather than Coal/Oil, as I expect by now there are enough IC scattered around territories
to generate local diesel fuel if isolated in war.

Like the other two, it's meant to be multi-role in the heavy support role for coastal patrol forces.


Parthian Gunboats are meant for independent littorial operations
and power projections. In wartime they may also be tasked with escort of maritime trade and general patrol.

Similar to the Chinese Ping Hai, but wider and longer.
That allows the 'X' mount and while Quad 37mm take the place of the 3.5" AA in the Starboard/Port wing spots.

165mm foreward, single 163mm Howitzer aft in 'X'. ASW on fantail.
Fitting an aircraft *might* be possible, but the expectation is that land based scouts and spotters can now be called on for support.

          S1              S3               
A (B) [a]                [ b ]  (X) Y
          P2              P4


On the theory that sensors help you find the foe, or avoid same, Sonar, Hydrophones, Hulesmeyer and the new Air Search Radar are fitted. Like prior gunboats, a squadron plot room is included to coordinate fire support missions with on-shore troops, or patrol efforts of a coast guard squadron.

The armor is meant to defeat QF weapons as might be found on destroyers or smaller cruisers.  To allow substantial engine room, an armor deck is used, at the 2.3m level, leaving only 1 deck level unarmored.

A reversion to underwater torpedo tubes sees 2 fitted in the bow, using submarine technology. These are forward of the main bulkhead, and are protected by the forward armored deck. As I've mentioned before the 'speed limit' on underwater tube use was apparently around 20knots. Considering that it often seems ~19-20knots was the best severely damaged ships could manage without bulkheads collapsing, I think there's likely a link.
Though I may want to spring for the biggest torps I can from the misc weight.  Or downsize to 18" for merchant sinking.

Pasban "Guardian", Parthian Gunboat laid down 1936

Displacement:
    2,500 t light; 2,716 t standard; 2,886 t normal; 3,022 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (392.14 ft / 387.14 ft) x 52.49 ft x (9.84 / 10.19 ft)
    (119.52 m / 118.00 m) x 16.00 m  x (3.00 / 3.11 m)

Armament:
      3 - 6.50" / 165 mm 47.0 cal guns - 176.37lbs / 80.00kg shells, 250 per gun
      Quick firing guns in deck and hoist mounts, 1932 Model
      2 x Single mounts on centreline, forward evenly spread
        1 raised mount
      1 x Single mount on centreline forward
      1 - 6.42" / 163 mm 20.0 cal gun - 143.30lbs / 65.00kg shells, 200 per gun
      Dual purpose gun in deck and hoist mount, 1924 Model
      1 x Single mount on centreline, aft deck centre
        1 raised mount
      16 - 1.46" / 37.0 mm 70.0 cal guns - 1.72lbs / 0.78kg shells, 3,200 per gun
      Anti-air guns in deck mounts, 1936 Model
      4 x 2-gun mounts on side ends, evenly spread
      16 - 0.91" / 23.0 mm 90.0 cal guns - 0.44lbs / 0.20kg shells, 5,000 per gun
      Anti-air guns in deck mounts, 1936 Model
      6 x Twin mounts on sides, evenly spread
        6 raised mounts
      2 x Twin mounts on centreline ends, evenly spread
        2 raised mounts
      Weight of broadside 707 lbs / 321 kg

Armour:
  - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    1.97" / 50 mm    251.64 ft / 76.70 m    12.63 ft / 3.85 m
    Ends:    0.98" / 25 mm    135.47 ft / 41.29 m    12.63 ft / 3.85 m
      Main Belt covers 100 % 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:    2.56" / 65 mm    1.38" / 35 mm        1.97" / 50 mm
    2nd:    1.97" / 50 mm    1.38" / 35 mm        1.38" / 35 mm
    3rd:    0.31" / 8 mm          -                  -
    4th:    0.31" / 8 mm          -                  -

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

  - Conning towers: Forward 2.95" / 75 mm, Aft 0.00" / 0 mm

Machinery:
    Diesel Internal combustion generators,
    Electric motors, 2 shafts, 7,718 shp / 5,757 Kw = 20.00 kts
    Range 3,150nm at 14.00 kts
    Bunker at max displacement = 306 tons

Complement:
    196 - 255

Cost:
    £0.892 million / $3.568 million

Distribution of weights at normal displacement:
    Armament: 147 tons, 5.1 %
      - Guns: 147 tons, 5.1 %
    Armour: 744 tons, 25.8 %
      - Belts: 327 tons, 11.3 %
      - Armament: 54 tons, 1.9 %
      - Armour Deck: 350 tons, 12.1 %
      - Conning Tower: 13 tons, 0.4 %
    Machinery: 217 tons, 7.5 %
    Hull, fittings & equipment: 987 tons, 34.2 %
    Fuel, ammunition & stores: 386 tons, 13.4 %
    Miscellaneous weights: 405 tons, 14.0 %
      - Hull below water: 176 tons
      - Hull void weights: 51 tons
      - Hull above water: 38 tons
      - On freeboard deck: 25 tons
      - Above deck: 115 tons

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      6,472 lbs / 2,936 Kg = 47.2 x 6.5 " / 165 mm shells or 2.2 torpedoes
    Stability (Unstable if below 1.00): 1.39
    Metacentric height 3.4 ft / 1.0 m
    Roll period: 12.0 seconds
    Steadiness    - As gun platform (Average = 50 %): 70 %
            - Recoil effect (Restricted arc if above 1.00): 0.28
    Seaboat quality  (Average = 1.00): 1.42

Hull form characteristics:
    Hull has rise forward of midbreak,
      a ram bow and a cruiser stern
    Block coefficient (normal/deep): 0.505 / 0.511
    Length to Beam Ratio: 7.38 : 1
    'Natural speed' for length: 19.68 kts
    Power going to wave formation at top speed: 43 %
    Trim (Max stability = 0, Max steadiness = 100): 49
    Bow angle (Positive = bow angles forward): 13.00 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,  17.55 ft / 5.35 m
      - Forward deck:    30.00 %,  17.55 ft / 5.35 m,  17.55 ft / 5.35 m
      - Aft deck:    35.00 %,  9.35 ft / 2.85 m,  9.35 ft / 2.85 m
      - Quarter deck:    15.00 %,  9.35 ft / 2.85 m,  9.35 ft / 2.85 m
      - Average freeboard:        13.78 ft / 4.20 m

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 54.2 %
        - Above water (accommodation/working, high = better): 173.6 %
    Waterplane Area: 13,602 Square feet or 1,264 Square metres
    Displacement factor (Displacement / loading): 139 %
    Structure weight / hull surface area: 59 lbs/sq ft or 286 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0.72
        - Longitudinal: 1.06
        - Overall: 0.75
    Caution: Hull subject to strain in open-sea
    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


Misc Wt
51 - Reserve

AD
15t -  FC
15t - Searchlight Tower Aft (Night Fighting)
25t - LR Radio
0t - SR Radio
20t - Squadron / FireSupport Plot Room
25t - AS Radar
25t - Hulesmeyer

OD
5t  : MSW Paravanes
1t : ASW Paravanes
2t : 2 'y' DC throwers
12t : 48 x 280kg DC


HAW
3t : CO2 compressor A/C
3t : Extra Fire Fighting
32t : Marine Squad

HBW
3t : Extra pumps
10t : Sonar
15t :  Enhanced Hydrophone station
18t : 2 UTT 21" Bow, 6 torps
120t : DE Turboelectric Drive
10t : Batteries

Decks :
5.35m: Weather Deck
2.85m  : Armor Deck, Top Main Belt
0.35m  : 1st Platform deck
          -1.0 m : bottom main belt
-2.65 m : Engineering deck (3m high)
-3.00 m : Keel

[The Rock Doctor]

Fair point on Normandie, completely forgot about her.