Parthian Ships 1928 +

[Kaiser Kirk]

Looking at Frawar, I need to designate the 120& 37 mount type as DP

I also go back and forth on the upper citadel.
I can't expect a heavy screen for these, so they could be subject to lots of cruiser-level shots,
so having the upper hull armored seemed good. Plus the upper deck serves as a 'bomb deck'.

It does soak up a fair bit of weight, but I think makes it harder to soft-mission kill it.

[The Rock Doctor]

Stumpy but capable.

[Kaiser Kirk]

Stumpy but capable.

I wanted to keep it under 141m long.

That's the length I came up with for 'typical merchant' and so the lengths of the 'international merchant' docks
I built in the Pacific Freeports to support & encourage trans-pacific trade.

I expect there are also civilian docks of that length - which is a storyline matter.

But to me, having certain vessels at ~141 is a matter of flexibility.

[The Rock Doctor]

It's not a complaint per se, just an observation.  My "emergency battleship" designs fit into 150m docks and the sketch I made of it did not appeal to me from an aesthetic perspective.

Affordable firepower does, of course, still have appeal.

[TacCovert4]

Meanwhile I'm going to be going back to trying to do the 6 x 14in fast ship again.

[Kaiser Kirk]

While I suspect our aesthetic appreciations all vary- I mean, I *like* flying off decks and double casement predreads...goes to show how odd I am...

I long ago realized that none of the Parthian designs were going to get the visual accolades the
long slender ships like Hood got...though I always quite liked HMS Tiger, I was designing HMS Erins

A number of the earlier 'Bastions' had 6-guns, from 255 to 345....
but I find I don't care for 6-gun capital ship batteries.
I know with spotting planes and radar coming , it does not matter as much as it did,
but I would rather 'pay more' to get the same ship with 8-guns.
It does not require 33% more tonnage to get 33% more barrels.

[TacCovert4]

And despite being very American I prefer queen Anne mansions or sea cube superstructure because I think they're more functional outside of the very specific situation of a fleet line of battle engagement.

[Kaiser Kirk]

The Dahae are the closest to a fast 14" vessel I have. I am dissatisfied by it's size (too big) and belt (too thin) and speed (29 not 31), though I like the 8x333mm.
I have a feeling it would match up Beautifully against Foxy's ships had he kept building them. As it is the BCs he built in the first decade are still in service and it can engage any of them.

Back to the Frawar,
The mounts needed to be DP, which takes weight, but I realized I had updated the 120mm from L43 to L47, but failed to change the bore to the new 115L47. Which saved the weight just 'spent' on DP.

So I could repost that,
But I decided to see the opportunity cost of mounting 130L47 DP with the new heavy 39kg shell.
Considering this might not have lots of screening units, more 'punch' is desirable.
Essentially it's my version of the British 5.25" - same logic behind them.
However I do 'pay' for two-gun versions, as I gave up single slides ~1912, which should incidentally address the issues with the cramped gunhouses the RN fielded at first.

Swapping the 120L47 for the 130L47 pushed weight up,
but I found I had 10% stern, not the 15% default.
I was able to adjust that, shrinking the area the belt needed to cover.
Then deepen the hull 0.33m
and I could afford not only the 130mm battery, but +10mm on the belt as well.
I then reduced the upper belt FROM 75mm to 65mm which gave +5m on belt.

So the result is a little more redoubtable..at the same tonnage.

Frawar "Bastion"    VI, Parthia Battleship laid down 1932

Displacement:
    19,000 t light; 20,417 t standard; 21,625 t normal; 22,592 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (459.32 ft / 452.76 ft) x 91.86 ft (Bulges 95.14 ft) x (30.61 / 31.75 ft)
    (140.00 m / 138.00 m) x 28.00 m (Bulges 29.00 m)  x (9.33 / 9.68 m)

Armament:
      8 - 13.11" / 333 mm 43.0 cal guns - 1,311.75lbs / 595.00kg shells, 110 per gun
      Breech loading guns in turret on barbette mounts, 1927 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 - 1.73lbs / 0.79kg shells, 3,000 per gun
      Anti-air guns in deck and hoist mounts, 1930 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 11,922 lbs / 5,408 kg

Armour:
  - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    12.8" / 325 mm    294.29 ft / 89.70 m    15.49 ft / 4.72 m
    Ends:    1.38" / 35 mm    158.43 ft / 48.29 m    12.01 ft / 3.66 m
    Upper:    2.56" / 65 mm    294.29 ft / 89.70 m    7.51 ft / 2.29 m
      Main Belt covers 100 % of normal length
      Main Belt inclined -15.00 degrees (positive = in)

  - Torpedo Bulkhead - Additional damage containing bulkheads:
        1.50" / 38 mm    294.29 ft / 89.70 m    33.89 ft / 10.33 m
    Beam between torpedo bulkheads 62.34 ft / 19.00 m

  - Hull Bulges:
        0.35" / 9 mm    301.84 ft / 92.00 m    24.05 ft / 7.33 m

  - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    12.6" / 320 mm    4.72" / 120 mm        10.2" / 260 mm
    2nd:    2.56" / 65 mm    1.57" / 40 mm        1.97" / 50 mm
    3rd:    0.31" / 8 mm    0.31" / 8 mm        0.31" / 8 mm
    4th:    0.31" / 8 mm          -                  -

  - Protected deck - multiple decks:
    For and Aft decks: 5.31" / 135 mm
    Forecastle: 1.38" / 35 mm  Quarter deck: 3.94" / 100 mm

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

Machinery:
    Oil fired boilers, steam turbines,
    Geared drive, 4 shafts, 54,769 shp / 40,858 Kw = 24.00 kts
    Range 6,726nm at 14.00 kts
    Bunker at max displacement = 2,175 tons

Complement:
    891 - 1,159

Cost:
    £8.172 million / $32.686 million

Distribution of weights at normal displacement:
    Armament: 2,153 tons, 10.0 %
      - Guns: 2,153 tons, 10.0 %
    Armour: 7,774 tons, 36.0 %
      - Belts: 3,011 tons, 13.9 %
      - Torpedo bulkhead: 552 tons, 2.6 %
      - Bulges: 95 tons, 0.4 %
      - Armament: 1,230 tons, 5.7 %
      - Armour Deck: 2,675 tons, 12.4 %
      - Conning Towers: 211 tons, 1.0 %
    Machinery: 1,617 tons, 7.5 %
    Hull, fittings & equipment: 6,779 tons, 31.3 %
    Fuel, ammunition & stores: 2,625 tons, 12.1 %
    Miscellaneous weights: 677 tons, 3.1 %
      - Hull below water: 157 tons
      - Bulge void weights: 160 tons
      - Hull above water: 38 tons
      - On freeboard deck: 30 tons
      - Above deck: 292 tons

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      30,759 lbs / 13,952 Kg = 27.3 x 13.1 " / 333 mm shells or 5.8 torpedoes
    Stability (Unstable if below 1.00): 1.14
    Metacentric height 5.6 ft / 1.7 m
    Roll period: 16.8 seconds
    Steadiness    - As gun platform (Average = 50 %): 70 %
            - Recoil effect (Restricted arc if above 1.00): 0.63
    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): 0.574 / 0.578
    Length to Beam Ratio: 4.76 : 1
    'Natural speed' for length: 21.28 kts
    Power going to wave formation at top speed: 61 %
    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:    32.50 %,  21.16 ft / 6.45 m,  18.70 ft / 5.70 m
      - Aft deck:    32.50 %,  18.70 ft / 5.70 m,  18.70 ft / 5.70 m
      - Quarter deck:    15.00 %,  18.70 ft / 5.70 m,  19.69 ft / 6.00 m
      - Average freeboard:        19.86 ft / 6.05 m

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 96.9 %
        - Above water (accommodation/working, high = better): 122.6 %
    Waterplane Area: 29,688 Square feet or 2,758 Square metres
    Displacement factor (Displacement / loading): 106 %
    Structure weight / hull surface area: 183 lbs/sq ft or 895 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0.88
        - Longitudinal: 3.11
        - Overall: 1.00
    Adequate machinery, storage, compartmentation space
    Excellent accommodation and workspace room
    Ship has slow, easy roll, a good, steady gun platform


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. 

The class reverts to a protected deck and armored upper citadel.
The upper armored deck is 35mm, proof against bombs and QF

Upper Belt :
The Main belt rises to 1.5m below the weather deck,
while the Upper belt covers the height of 2 decks forward, 1 deck aft, for (5-1.5)/2 + (2.5-1.5)/2 = 2.25m average height.
This is outsloped at 10%
2.25/cos (10) = 2.2849 =2.285 = 2.29

Main Belt :
Covers from 2.6m above WL to -2m below WL, rising 1m above the crown of the protective deck, and 1.1m below the lower edge of the protective deck. A total height of 4.6m.
This follows the line of the hull and is outsloped at 15%.
4.6/cos(15) = 4.7222 = 4.72

Waterline protection : 320mm (belt) outsloped backed by the  100mm protective deck and the 38mm TDS = 325+ (100*1.5)/2 + 38/2 = 419

End Belts : These are thickened slopes for protective decks,
so 70mm slopes fore, and 145mm slopes aft.

Decks : The citadel is protected by a 35mm upper deck and 100mm protective deck, for a vertical of 117mm. The upper deck thereby serves as a bomb deck to activate and detonate the shells and bombs short of the main deck.

The slopes of the protective deck are largely protected by the main belt rising above it.

TDS : TDS rises to seal to the bottom of the protective deck at +1.6m above WL

Reserve : 110t

AD
217t - Fire Control 1930
25t - LR Radio
25t - Hulesmeyer
25t - Searchlight Tower (NF)

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

HAW
19t - Extra Fire Extinguishers
19t - CO2 Compressor AC

HBW
19t - Extra Pumps
138t - Torpedo Nets


Decks
+6.6  forecastle deck
+4.1  weather deck -  35mm
        +2.6 top of main belt, bottom of upper belt
+1.6  Crown of portective deck 100mm, Top TDS
-0.90  bottom of protective deck slope,
          -2.0  bottom of main belt
-3.40  1st platform deck
-7.40  Engineering Deck
-8.73  double bottom, bottom of torpedo defenses
-9.33  Keel

[Kaiser Kirk]

I will have to revisit the Frawar, I revised the freeboard allocation in the last efforts and forgot to adjust the upper belt accordingly. Argh.

Light Armored Cruiser
Two variations of the same design, meant to pair with the Pouseki class Cruiser posted previously, in high cruising speed runs through 'enemy' waters, expecting the difference in speeds at time of encounter will help determine if they engage and close, or turn away and run.

Between outsloped belt and the new 215L47 firing a heavy 180kg shell, they significantly overmatch any cruiser, and depending on range can run or fight older ACs. 

Steaming speed
Playing this, one thing I've come round to thinking is that in many ways the WWII USA experience is a bad proxy for the N7 experience. The US production was overwhelming, while N7 nations just do not have that margin over their foes. Between 1921 & 1945 the USN produced 150 aircraft carriers of various types...none of us will approach that in number of hulls or tonnage. The giant USN Fleets with multiple Carrier TFs moving at high speed just will not be our reality.

Then there's speed at sea- the CV task forces are known for having moved swiftly, but also topped off every 2-3 days. 

In oil, the US was the world leader in oil, and had invested in a fleet train that would allow their vessels to steam at high speed/consumption rates. This was helped by the IJN philosophy of basically not commerce raiding vs. the USN supply lines.

Even so I found this info for the Brooklyns :
Time at speed during WWII
32.4 % <16kts
37.6%  16-18 kts
28.4% 18-20 kts
1.6% 25-32knts

Even with the US Carrier TFs moving at speed through the Pacific, it doesn't seem like they were cruising at 28+knots places.

Overall, I am thinking that it will be far more likely our forces remain in the 14-15knot realm most of the time. 

While I may make some ships with a 22knot speed, I should not presume that for my fleet, and its best if I expect them to be stationed somewhere that might have some on-site domestic production.  I am making some oilers, and I do have a 'storyline' merchant marine with more - I presume I have the #1 oil export business, but I will be staying <20knots for my cruise speeds as a whole

Naming notes
In the meantime, looking back at ship designs, I have ~57 designs called 'Saka' or 'LAC' dating back to 1920.
BUT..I also have a ship named Saka , so I need a different class name.

So Xiyon - the Persian form of Huna or Hun. There were 4 tribes of Iranian Huns, which seem different than the Huns of Attila. The were nomadic raiders that conquered the Oxus->Afghan->Indus/Ganges areas in our real world.


....gah almost lost the post.... Anyhow I'll post the two Xiyons after I get back.

[Kaiser Kirk]

The first of the two Xiyon variants, this one #58 of the light armored cruiser designs 1920-1932...

This one has +1 knot of top speed, but lacks an armored upper hull and bomb deck, going AoN, Which I question considering it may be pressing close at night and so absorbing a lot of QF hits.

The high cruise speed is explained above for the Pouseki cruiser,
the difference in cruise speed at contact should allow these classes to force or deny combat, somewhat regardless of top speed.  By time the other vessel had worked to top speed, these would have been doing theirs for sufficient time to push the range down to ~13-14km.

The 165mm (Pouseki) and 215(Xiyon) both fire heavy shells at good velocity, allowing good penetration. The 215 looks to be between my 255L50 and 255L47 in performance against belts out to 25km, and only slightly worse than the 255L50 vs. decks. The speed advantage should allow rapidly reaching an advantageous range...or running for it if needed.

Xiyon LVIII, Parthian Light Armored Cruiser laid down 1932

Displacement:
    15,000 t light; 16,122 t standard; 18,939 t normal; 21,192 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (623.36 ft / 616.80 ft) x 59.06 ft (Bulges 65.62 ft) x (31.50 / 34.69 ft)
    (190.00 m / 188.00 m) x 18.00 m (Bulges 20.00 m)  x (9.60 / 10.57 m)

Armament:
      8 - 8.46" / 215 mm 47.0 cal guns - 396.83lbs / 180.00kg shells, 200 per gun
      Breech loading guns in turret on barbette mounts, 1932 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, 400 per gun
      Dual purpose guns in deck and hoist mounts, 1931 Model
      6 x 2-gun mounts on sides, evenly spread
      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, 2,400 per gun
      Dual purpose guns in deck and hoist mounts, 1929 Model
      6 x 2 row quad mounts on sides, evenly spread
        6 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 4,602 lbs / 2,088 kg

Armour:
  - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    6.50" / 165 mm    437.93 ft / 133.48 m    12.57 ft / 3.83 m
    Ends:    1.38" / 35 mm    178.84 ft / 54.51 m    12.01 ft / 3.66 m
      Main Belt covers 109 % of normal length
      Main Belt inclined -15.00 degrees (positive = in)

  - Torpedo Bulkhead - Additional damage containing bulkheads:
        1.50" / 38 mm    437.93 ft / 133.48 m    33.99 ft / 10.36 m
    Beam between torpedo bulkheads 45.93 ft / 14.00 m

  - Hull Bulges:
        0.35" / 9 mm    442.91 ft / 135.00 m    25.59 ft / 7.80 m

  - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    7.09" / 180 mm    3.94" / 100 mm        5.51" / 140 mm
    2nd:    2.56" / 65 mm    1.57" / 40 mm        1.57" / 40 mm
    3rd:    0.31" / 8 mm          -            0.31" / 8 mm
    4th:    0.31" / 8 mm          -                  -

  - Armoured deck - single deck:
    For and Aft decks: 2.56" / 65 mm
    Forecastle: 1.57" / 40 mm  Quarter deck: 2.56" / 65 mm

  - Conning towers: Forward 6.50" / 165 mm, Aft 1.57" / 40 mm

Machinery:
    Oil fired boilers, steam turbines,
    Geared drive, 4 shafts, 125,656 shp / 93,739 Kw = 32.00 kts
    Range 6,070nm at 22.00 kts
    Bunker at max displacement = 5,070 tons

Complement:
    806 - 1,049

Cost:
    £6.422 million / $25.686 million

Distribution of weights at normal displacement:
    Armament: 1,103 tons, 5.8 %
      - Guns: 1,103 tons, 5.8 %
    Armour: 4,301 tons, 22.7 %
      - Belts: 1,548 tons, 8.2 %
      - Torpedo bulkhead: 824 tons, 4.4 %
      - Bulges: 149 tons, 0.8 %
      - Armament: 517 tons, 2.7 %
      - Armour Deck: 1,140 tons, 6.0 %
      - Conning Towers: 124 tons, 0.7 %
    Machinery: 3,709 tons, 19.6 %
    Hull, fittings & equipment: 5,286 tons, 27.9 %
    Fuel, ammunition & stores: 3,938 tons, 20.8 %
    Miscellaneous weights: 602 tons, 3.2 %
      - Hull below water: 30 tons
      - Bulge void weights: 150 tons
      - Hull above water: 30 tons
      - On freeboard deck: 167 tons
      - Above deck: 225 tons

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      20,401 lbs / 9,254 Kg = 67.3 x 8.5 " / 215 mm shells or 2.9 torpedoes
    Stability (Unstable if below 1.00): 1.12
    Metacentric height 2.8 ft / 0.9 m
    Roll period: 16.4 seconds
    Steadiness    - As gun platform (Average = 50 %): 50 %
            - Recoil effect (Restricted arc if above 1.00): 0.69
    Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
    Hull has rise forward of midbreak,
      a ram bow and a round stern
    Block coefficient (normal/deep): 0.520 / 0.528
    Length to Beam Ratio: 9.40 : 1
    'Natural speed' for length: 24.84 kts
    Power going to wave formation at top speed: 58 %
    Trim (Max stability = 0, Max steadiness = 100): 49
    Bow angle (Positive = bow angles forward): 11.00 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 %,  27.56 ft / 8.40 m,  24.93 ft / 7.60 m
      - Forward deck:    35.00 %,  24.93 ft / 7.60 m,  24.93 ft / 7.60 m
      - Aft deck:    36.00 %,  14.44 ft / 4.40 m,  14.44 ft / 4.40 m
      - Quarter deck:    9.00 %,  14.44 ft / 4.40 m,  15.42 ft / 4.70 m
      - Average freeboard:        20.46 ft / 6.24 m

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 109.2 %
        - Above water (accommodation/working, high = better): 114.6 %
    Waterplane Area: 24,719 Square feet or 2,296 Square metres
    Displacement factor (Displacement / loading): 120 %
    Structure weight / hull surface area: 127 lbs/sq ft or 620 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0.94
        - Longitudinal: 1.72
        - Overall: 1.00
    Adequate machinery, storage, compartmentation space
    Adequate accommodation and workspace room

The Xiyon class is intended to be a "Light Armored Cruiser" to return the vessel to the role of defeating opposing scout cruisers and protected cruisers.

The LVIII version has an upper armored area, making most of the hull immune to HE/SAP.
This foregoes that in favor of a thick belt and heavier deck - somewhat less protection overall,
but +1 knot to 32knots.

The main gun requires turrets, but the shells are far greater than a hand loaded gun can manage,
forming a powerful threat to anything in range...
and the shells are large enough to see splashed out to the limits of visual range.

While 330+mm guns fire slowly and need 8 to alternate 4 gun salvos to maintain spotting,
a 215mm gun fires over twice as fast, allowing just 4 barrels to generate the splashes.
This allows mounting the battery both fore and aft.
 
The 215mm gun fires a heavier shell than the old 230mm, and should have splashes discernable to the Horizon, allowing reliable engagement even when spotter aircraft are not viable.

Secondary on sides has the inner guns raised to fire foreward over the end guns.
Guns are also raised over the main battery fore/aft.

                  s1    (s3)  TT        Cat          s5                         
A      (a)                      HangerAC                        (x)    Y 
                  s2    (s4)  TT        Cat          s8


The high cruise speed is to allow it to make high speed cruises through enemy territory, moving 264nm overnight. The expectation also is that when it first encounters a foe it will have a 8-10 knot speed advantage, and while both vessels will increase to maximum revolutions, this vessel will be able to reach maximum speed more rapidly, allowing it to close or depart. 


Main Gun : 215L47 Designed 1932-1933
Fires 20% overweight shells from max 215L60
150.66 * 1.2 = 186.792 = 185


Secondary Gun : 130L47  designed 1930
Using overweight shells, this has good punch and range.


Armor 
A debate between extensive light armor to defeat QF weapons of their intended prey, or thicker AON armor to also allow long range engagements with peers led to broad protection with cruiser-grade armor, leaving a single deck level exposed.


Belt : 120mm , +1.9above WL to -1.8 Below WL
Inclined outwards 15 degrees
3.7 / cos(15) = 3.83

TDS rises behind belt to +1.9m
effectively adding 19mm and serving as a splinter barrier

The Belt is capped by Armor deck

End armor is slopes of protective decks,
75mm slopes forward, 100mm slopes aft.

TDS : 3m deep
Thin skinned bulge
1m deep bulge - Air gap, but counter floodable
hull metal
2m deep - fuel filled
25mm Torpedo Bulkhead, rises behind main belt to seal to armor deck.


Range : 6012 * 1.15 (geared) = 6,914nm

4,897t * 1.15 (geared) = 5631 effective tons fuel

Range @ speed
32 knots :  2,392nm
30.25 knots :  2,839nm (80% power, sustantainable)
26 knots : 4,406nm
22 knots : 6,914nm  (Raider speed)
16 knots : 15,250nm (Scout speed)
14 knots : 20,630nm (Fleet speed)

Misc Wt :
80t  Const Resv

AD
100t FC
25t LR Radio
25t Searchlight Tower (NF)
25t Hulesmeyer
50t Primitive RADAR, aerial direction indicator
10t RDF/Jammer

OD
5t  - Paravanes
32t - 2 x Quad 21" 4t

Amidships Aircraft handling area
10t : 2x Gunpowder Cat  over TT
Typically 1 loaded with the fighters, while the other
1 cycle the scouts
100t : 2 x Fighter Floatplanes, 2x Scout
20t : Hanger


HAW
15t: CO2 Compressor AC
15t : Extra Fire Suppression

HBW
15t  :  Enhanced Hydrophones.
15t  : Extra Pumps.


Decks :
 7.6  Forecastle  Deck
 4.4  Weather  Deck, top main belt, Armored deck
 1.9  Main Deck
-0.6  2nd deck
            -1.8  Bottom Main Belt
-3.1  1st Deck
-7.6    Engineering
-8.66  Keel, Double Bottom

[Kaiser Kirk]

Well...this stinks..  seem to have saved the 32kt AON version over the 31 not AON version.
so I will have to recreate that when time allows.

[Kaiser Kirk]

And this is the recreation of the version that invests in protection for the upper reaches as well. Thinner belt, but with a PD behind it, so effectively more armor at WL and Vertically, more overall protected, and only 1 knot slower.
Xiyon LIX, Parthian Light Armored Cruiser laid down 1932

Displacement:
   15,000 t light; 16,122 t standard; 18,939 t normal; 21,192 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (623.36 ft / 616.80 ft) x 59.06 ft (Bulges 65.62 ft) x (31.50 / 34.69 ft)
   (190.00 m / 188.00 m) x 18.00 m (Bulges 20.00 m)  x (9.60 / 10.57 m)

Armament:
      8 - 8.46" / 215 mm 47.0 cal guns - 396.83lbs / 180.00kg shells, 200 per gun
     Breech loading guns in turret on barbette mounts, 1932 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, 400 per gun
     Dual purpose guns in deck and hoist mounts, 1931 Model
     6 x 2-gun mounts on sides, evenly spread
     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, 2,400 per gun
     Dual purpose guns in deck and hoist mounts, 1929 Model
     6 x 2 row quad mounts on sides, evenly spread
      6 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 4,602 lbs / 2,088 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.92" / 125 mm   400.92 ft / 122.20 m   15.98 ft / 4.87 m
   Ends:   1.38" / 35 mm   215.85 ft / 65.79 m   12.01 ft / 3.66 m
   Upper:   2.95" / 75 mm   400.92 ft / 122.20 m   5.09 ft / 1.55 m
     Main Belt covers 100 % of normal length
     Main Belt inclined -15.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.50" / 38 mm   400.92 ft / 122.20 m   34.48 ft / 10.51 m
   Beam between torpedo bulkheads 45.93 ft / 14.00 m

   - Hull Bulges:
      0.35" / 9 mm   442.91 ft / 135.00 m   25.59 ft / 7.80 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   8.27" / 210 mm   4.33" / 110 mm      6.50" / 165 mm
   2nd:   2.56" / 65 mm   1.57" / 40 mm      1.57" / 40 mm
   3rd:   0.31" / 8 mm         -         0.31" / 8 mm
   4th:   0.31" / 8 mm         -               -

   - Protected deck - multiple decks:
   For and Aft decks: 3.54" / 90 mm
   Forecastle: 1.57" / 40 mm  Quarter deck: 2.56" / 65 mm

   - Conning towers: Forward 8.27" / 210 mm, Aft 2.56" / 65 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 110,459 shp / 82,403 Kw = 31.00 kts
   Range 6,070nm at 22.00 kts
   Bunker at max displacement = 5,070 tons

Complement:
   806 - 1,049

Cost:
   £6.136 million / $24.545 million

Distribution of weights at normal displacement:
   Armament: 1,103 tons, 5.8 %
      - Guns: 1,103 tons, 5.8 %
   Armour: 4,832 tons, 25.5 %
      - Belts: 1,667 tons, 8.8 %
      - Torpedo bulkhead: 765 tons, 4.0 %
      - Bulges: 149 tons, 0.8 %
      - Armament: 576 tons, 3.0 %
      - Armour Deck: 1,509 tons, 8.0 %
      - Conning Towers: 166 tons, 0.9 %
   Machinery: 3,260 tons, 17.2 %
   Hull, fittings & equipment: 5,213 tons, 27.5 %
   Fuel, ammunition & stores: 3,938 tons, 20.8 %
   Miscellaneous weights: 592 tons, 3.1 %
      - Hull below water: 30 tons
      - Bulge void weights: 140 tons
      - Hull above water: 30 tons
      - On freeboard deck: 167 tons
      - Above deck: 225 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     21,953 lbs / 9,958 Kg = 72.4 x 8.5 " / 215 mm shells or 3.3 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 2.7 ft / 0.8 m
   Roll period: 16.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.70
   Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
   Hull has rise forward of midbreak,
     a ram bow and a round stern
   Block coefficient (normal/deep): 0.520 / 0.528
   Length to Beam Ratio: 9.40 : 1
   'Natural speed' for length: 24.84 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 48
   Bow angle (Positive = bow angles forward): 11.00 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 %,  27.56 ft / 8.40 m,  24.93 ft / 7.60 m
      - Forward deck:   30.00 %,  24.93 ft / 7.60 m,  24.93 ft / 7.60 m
      - Aft deck:   35.00 %,  14.44 ft / 4.40 m,  14.44 ft / 4.40 m
      - Quarter deck:   15.00 %,  14.44 ft / 4.40 m,  15.42 ft / 4.70 m
      - Average freeboard:      19.97 ft / 6.09 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 99.5 %
      - Above water (accommodation/working, high = better): 112.6 %
   Waterplane Area: 24,719 Square feet or 2,296 Square metres
   Displacement factor (Displacement / loading): 123 %
   Structure weight / hull surface area: 127 lbs/sq ft or 619 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.64
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Adequate accommodation and workspace room

The Xiyon class is intended to be a "Light Armored Cruiser" to return the vessel to the role of defeating opposing scout cruisers and protected cruisers.

The LIXversion has an upper armored area, making most of the hull immune to HE/SAP.

The Belt is 125mm, but is inclined backed by a substantial protective deck with TDS for splinters, so expected to be as effectively in excess of 185mm.

The main gun requires turrets, but the shells are far greater than a hand loaded gun can manage,
forming a powerful threat to anything in range...
and the shells are large enough to see splashed out to the limits of visual range.

While 330+mm guns fire slowly and need 8 to alternate 4 gun salvos to maintain spotting,
a 215mm gun fires over twice as fast, allowing just 4 barrels to generate the splashes.
This allows mounting the battery both fore and aft.
 
The 215mm gun fires a heavier shell than the old 230mm, and should have splashes discernable to the Horizon, allowing reliable engagement even when spotter aircraft are not viable.

Secondary on sides has the inner guns raised to fire foreward over the end guns.
Guns are also raised over the main battery fore/aft.

                  s1     (s3)   TT        Cat          s5                         
A       (a)                      HangerAC                         (x)    Y 
                  s2     (s4)   TT        Cat          s8


The high cruise speed is to allow it to make high speed cruises through enemy territory, moving 264nm overnight. The expectation also is that when it first encounters a foe it will have a 8-10 knot speed advantage, and while both vessels will increase to maximum revolutions, this vessel will be able to reach maximum speed more rapidly, allowing it to close or depart. 


Main Gun : 215L47 Designed 1932-1933
Fires 20% overweight shells from max 215L60
150.66 * 1.2 = 186.792 = 185


Secondary Gun : 115L47  designed 1930
Using overweight shells, this has the same punch as the old 120mm, with better sectional density.


Armor 
A debate between extensive light armor to defeat QF weapons of their intended prey, or thicker AON armor to also allow long range engagements with peers led to broad protection with cruiser-grade armor, leaving a single deck level exposed.

Armor Decks :
Upper Armored Deck 35mm is at the 4.4m (weather deck) level. This both excludes HE & SAP, but serves as a 'bomb deck' to fuse and prematurely detonate AP bombs and shells. 

Main Protective Deck 55mm is at the 1.9 to -0.6 level

Vertical effective : 55+(35/2) = 83mm

Upper Belt : 75mm  : 2.9m to 4.4 m = 1.5m
This is also inclined outwards at 15 degrees.
2.5/cos (15) =  1.5529 = 1.55

Main Belt : 125mm ,
Rises 1m above protective deck
+2.9above WL to -1.8 Below WL
Inclined outwards 15 degrees
4.7 / cos(15) = 4.8657 = 4.87

TDS rises behind belt to +1.9m
effectively adding 19mm and serving as a splinter barrier

Main Belt Waterline Effective thickness :
125 inclined, + (55*1.5/2) +(38/2) = 185+

End armor is slopes of protective decks,
75mm slopes forward, 100mm slopes aft.

TDS : 3m deep
Thin skinned bulge
1m deep bulge - Air gap, but counter floodable
hull metal
2m deep - fuel filled
25mm Torpedo Bulkhead, rises behind main belt to seal to armor deck.


Range : 6012 * 1.15 (geared) = 6,914nm

4,897t * 1.15 (geared) = 5631 effective tons fuel

Range @ speed
32 knots :  2,392nm
30.25 knots :  2,839nm (80% power, sustantainable)
26 knots : 4,406nm
22 knots : 6,914nm  (Raider speed)
16 knots : 15,250nm (Scout speed)
14 knots : 20,630nm (Fleet speed)

Misc Wt :
80t  Const Resv

AD
100t FC
25t LR Radio
25t Searchlight Tower (NF)
25t Hulesmeyer
50t Primitive RADAR, aerial direction indicator
10t RDF/Jammer

OD
5t  - Paravanes
32t - 2 x Quad 21" 4t

Amidships Aircraft handling area
10t : 2x Gunpowder Cat   over TT
Typically 1 loaded with the fighters, while the other
1 cycle the scouts
100t : 2 x Fighter Floatplanes, 2x Scout
20t : Hanger


HAW
15t: CO2 Compressor AC
15t : Extra Fire Suppression

HBW
15t   :  Enhanced Hydrophones.
15t   : Extra Pumps.


Decks :
 7.6   Forecastle  Deck
 4.4   Weather  Deck, top main belt, Armored deck
 1.9   Main Deck
-0.6   2nd deck
             -1.8   Bottom Main Belt
-3.1   1st Deck
-7.6    Engineering
-8.66  Keel, Double Bottom
[/quote]

[The Rock Doctor]

But Kirk these are fast ships, there must be some mistake!

[Kaiser Kirk]

But Kirk these are fast ships, there must be some mistake!

ROFL
ok, not the type of insightful observation of merits and flaws I was expecting,
but funny none the less.

It will presumably shock you that one of my 1911 cruisers made 30.25 knots.
Actually all of my 180mm cruisers have made 30knots since 1921.
Likewise the 1920 Zemaka class ACs in service make 31 knots.

It's a hammer & anvil concept.
The anvil (battleline) doesn't need to move that fast.
The hammer (cruisers) needs to move fast.

Also, I eye the Roman ships like Empress Amelia and Messana and guess they are proxies for IJN ships as well, so I have an awareness 30-31 is the reasonable minimum for my cruiser weight vessels as I don't want to be so much slower they can definitely catch me.

That is however the foundation of that 'overtake speed' - max speed does not matter as much as having a speed edge at the meet, much like fighter combat "energy"

[Kaiser Kirk]

I was actually hoping for some feedback on if the upper hull being protected against HE/SAP, and the presence of a bomb deck was 'worthwhile' vs. the loss of 1 knot.

I am inclined to think it is. 31 knots is fast enough to escape anything likely to be able to hurt it.

Anyhow, to answer the cry of "Slower !"..  onto battlewagons.

This has a working name of Wirozag XXVI which gives an idea of it's lineage.
At 26 knots it would work with the Expeditionary Fleet- which is based 'at home' but reinforces other fleets.
But it does have comparitively weak armor.
...compared to what ?! one may ask...

Well, I can wait just a little more and field the Asi & Imulhu with decapping plates, a heavily sloped internal belt and overall more comprehensive scheme, but that is 23 knots.
I like that design, have about a dozen variants, not sure which I will use.

Anyhow - onto the Wirozag XXVI !  Which will likely be called Asi & Imulhu while the Asi & Imulhu designs become the Arwand class.

One may ask- why not more barrels ?
The answer is simple...another turret, esp superimposed, takes a great deal of tonnage and pushes the recoil way up.

I am trying to keep my tonnage and build times down.
39,000 is 39BP/48months = 8 HY

Wirozag XXVI, Parthian Battleship laid down 1932

Displacement:
    39,000 t light; 41,758 t standard; 45,158 t normal; 47,878 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (623.16 ft / 616.80 ft) x 114.83 ft (Bulges 124.67 ft) x (31.33 / 33.08 ft)
    (189.94 m / 188.00 m) x 35.00 m (Bulges 38.00 m)  x (9.55 / 10.08 m)

Armament:
      8 - 17.13" / 435 mm 47.0 cal guns - 2,711.69lbs / 1,230.00kg shells, 120 per gun
      Breech loading guns in turret on barbette mounts, 1931 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, 360 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
      40 - 1.46" / 37.0 mm 70.0 cal guns - 1.72lbs / 0.78kg shells, 2,000 per gun
      Anti-air guns in deck and hoist mounts, 1929 Model
      10 x 2 row quad mounts on centreline ends, evenly spread
        10 double raised mounts
      32 - 0.91" / 23.0 mm 90.0 cal guns - 0.44lbs / 0.20kg shells, 6,000 per gun
      Anti-air guns in deck mounts, 1932 Model
      16 x Twin mounts on sides, evenly spread
        16 double raised mounts
      8 - 0.91" / 23.0 mm 90.0 cal guns - 0.44lbs / 0.20kg shells, 5,000 per gun
      Machine guns in deck mounts, 1929 Model
      2 x 2 row quad mounts on centreline ends, evenly spread
        2 double raised mounts
      Weight of broadside 23,156 lbs / 10,503 kg

Armour:
  - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    14.8" / 375 mm    400.92 ft / 122.20 m    16.40 ft / 5.00 m
    Ends:    0.98" / 25 mm    215.85 ft / 65.79 m    16.99 ft / 5.18 m
      Main Belt covers 100 % of normal length
      Main Belt inclined -15.00 degrees (positive = in)

  - Torpedo Bulkhead - Additional damage containing bulkheads:
        2.24" / 57 mm    400.92 ft / 122.20 m    37.34 ft / 11.38 m
    Beam between torpedo bulkheads 79.40 ft / 24.20 m

  - Hull Bulges:
        0.35" / 9 mm    400.92 ft / 122.20 m    22.15 ft / 6.75 m

  - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    20.5" / 520 mm    7.87" / 200 mm        16.1" / 410 mm
    2nd:    2.36" / 60 mm    1.57" / 40 mm        1.57" / 40 mm
    3rd:    0.59" / 15 mm    0.31" / 8 mm        0.31" / 8 mm
    4th:    0.31" / 8 mm          -                  -
    5th:    0.31" / 8 mm          -                  -

  - Armoured deck - single deck:
    For and Aft decks: 5.79" / 147 mm
    Forecastle: 1.57" / 40 mm  Quarter deck: 5.51" / 140 mm

  - Conning towers: Forward 17.13" / 435 mm, Aft 1.57" / 40 mm

Machinery:
    Oil fired boilers, steam turbines,
    Geared drive, 4 shafts, 109,236 shp / 81,490 Kw = 26.00 kts
    Range 8,870nm at 16.00 kts
    Bunker at max displacement = 6,120 tons

Complement:
    1,548 - 2,013

Cost:
    £18.087 million / $72.349 million

Distribution of weights at normal displacement:
    Armament: 4,577 tons, 10.1 %
      - Guns: 4,577 tons, 10.1 %
    Armour: 14,930 tons, 33.1 %
      - Belts: 4,526 tons, 10.0 %
      - Torpedo bulkhead: 1,243 tons, 2.8 %
      - Bulges: 116 tons, 0.3 %
      - Armament: 3,054 tons, 6.8 %
      - Armour Deck: 5,480 tons, 12.1 %
      - Conning Towers: 511 tons, 1.1 %
    Machinery: 3,224 tons, 7.1 %
    Hull, fittings & equipment: 14,925 tons, 33.1 %
    Fuel, ammunition & stores: 6,158 tons, 13.6 %
    Miscellaneous weights: 1,343 tons, 3.0 %
      - Hull below water: 329 tons
      - Bulge void weights: 190 tons
      - Hull above water: 76 tons
      - On freeboard deck: 115 tons
      - Above deck: 633 tons

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      65,273 lbs / 29,607 Kg = 26.0 x 17.1 " / 435 mm shells or 11.8 torpedoes
    Stability (Unstable if below 1.00): 1.24
    Metacentric height 9.1 ft / 2.8 m
    Roll period: 17.4 seconds
    Steadiness    - As gun platform (Average = 50 %): 70 %
            - Recoil effect (Restricted arc if above 1.00): 0.46
    Seaboat quality  (Average = 1.00): 1.03

Hull form characteristics:
    Hull has a flush deck,
      a ram bow and a round stern
    Block coefficient (normal/deep): 0.656 / 0.659
    Length to Beam Ratio: 4.95 : 1
    'Natural speed' for length: 24.84 kts
    Power going to wave formation at top speed: 58 %
    Trim (Max stability = 0, Max steadiness = 100): 68
    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 %,  27.56 ft / 8.40 m,  25.10 ft / 7.65 m
      - Forward deck:    30.00 %,  25.10 ft / 7.65 m,  22.64 ft / 6.90 m
      - Aft deck:    35.00 %,  22.64 ft / 6.90 m,  22.64 ft / 6.90 m
      - Quarter deck:    15.00 %,  22.64 ft / 6.90 m,  23.62 ft / 7.20 m
      - Average freeboard:        23.77 ft / 7.25 m

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 99.9 %
        - Above water (accommodation/working, high = better): 155.8 %
    Waterplane Area: 54,556 Square feet or 5,068 Square metres
    Displacement factor (Displacement / loading): 104 %
    Structure weight / hull surface area: 227 lbs/sq ft or 1,107 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0.92
        - Longitudinal: 2.01
        - Overall: 1.00
    Adequate machinery, storage, compartmentation space
    Excellent accommodation and workspace room
    Ship has slow, easy roll, a good, steady gun platform

A follow on to the earlier Wirozag, slightly larger,
significantly better gunned.

Immunity Zone
Deck armor is in many ways more important than belt armor, as angle of attack matters on belts.
However, deck hits at very long range are expected to be very rare, with most vessels depleting their magazines prior to landing sufficient hits - barring magazine explosions

Against it's own gun, the ship is immune to belt hits beyond 15km, and to deck hits under 27km.

The TDS behind the main belt hould absorb all splinters from the belt, and stop hits down to 14km.

The Magazine box should suffice to stop any splinters, but also exclude critical hits outside 12km. and less than 31km.

This gives an IZ of 14-27km, and a partial IZ of 12-31KM.


Deck Guns
Deck guns are echloned outwards, like on Iowa,
allowing 4 to bear ahead (8 guns), or 4 on each side.
The dual 90m AA are above them.

Main Belt Armor 
This embraces "all or nothing"
The main armor deck caps the belt at 2.2m.

The belt is backed by the TDS, for +28mm

Outsloped Wedge shaped Belt
Three steps

Step 1
In the XXVII version, the lower portion of the belt tapers.
The upper 3.0m is a uniform 375mm, extending 0.8m below WL.
the lower 2.0m tapers from 375mm down to 310mm.

Mathwise that means there are 3 sections.
              |        | 
              | A      |  A ) Upper, 3000mm (3.0m) x 375mm
            B  \  | C  | 
                  \|    |  C) Lower back , 2000 (2.0m) x 310mm
B) Wedge 1/2B x H :
H = 2.0m = 2000
B = 375-310 = 65

A) = 1,125,000
B) = 65,000
C) = 620,000

SubTotal : 1,810,000 for 5m high tapered belt
Modeled as average 375mm thickness = /375
Total :  4826.67= 4.83m
 

Belt is outsloped by 15%.
Step 2 Outsloping
Height is "A" or adjacent
COS 15 = A/H
H* Cos 15 = A
H = A/Cos 15

So 4.83/ Cos(15) = 5.00038 = 5.0

Which gives 5.00 as the height.

End Belts : 5m high
Covers from -2m to +3m

Bow / Stern Armor
Assumed to be protective decks from +2.2 to -0.3

Main Deck Armor
Deck Armored is modeled as two parts
A 40/140/140 main armored deck : 5253tons
and a 75mm box around the magazines : 226 tons
Which is a total of 5479 tons

To model that, the deck thickness is shown as
40 / 147 /140
Which weighs  5480 tons

Total Magazine Vertical : 140+(75/2) = 177mm
Which means vertical is a 140mm deck with a 75mm splinter box over the magazines. Realistically anything penetrating 140mm is unlikely to detonate fully, so the 75mm is expected to stop flash and chunks.


TDS
Raised to the underside of the Armor deck at 2.2m above waterline.

This means it can serve as a splinter barrier behind the belt

TDS : ||9mm mild||  Bulge 1.5m ||9mm mild hull||, 1m liquid ||9mm mild||, 1.5m void ||9mm mild||, 1m liquid || armored (2x19=38mm)||,1.5m  Dam control/ flooding ||(19mm armor)||
Depth : 1.5m exterior, 3.5m interior to main bulkhead, 1.5m to second bulkhead. Total :6.5m, 57mm STS steel

This is expected to have the alternating liquid/void/liquid bulkheads absorb the force and slow and stop splinters, with all damage stopped by the 38mm main bulkhead. The possibility of leaks or major failure is addressed by the void damage control corridor, with it's own TDS bulkhead. 1

Aircraft
Aircraft handling facilities are on the stern, with a hanger in the 7.5m high quarterdeck.

190t Reserve Wt

AD
458t Fire Control
25t  LR Radio
0t  SR Radio
0t  SR Air Command Radio
25t  Searchlight Tower (NF)
25t  Hulesmeyer device station keeping
100t Admirals Quarters

OD
5t Paravanes
25t +5t : Fighter/Scout floatplane + Gunpowder Cat
25t +5t : Fighter/Scout floatplane + Gunpowder Cat
50t : Provision for 2 Scout (or Fighter) floatplanes
10t AC Hanger

HAW
38t Additional fire suppresion
38t CO2 Air conditioning

HBW
50t  Reserve Combat Center
10+2t Aux Diesel + 2t fuel
38t  Extra pumps
188t torpedo nets
15t  Enhanced Hydrophones
10t  1t doublewall tank, 6t AVGas, 3t Ftr weaposn
5t AV supplies Fire Ext.
13t  : Aux Diesel Generator, 10x1.3=13t, 244KW, last 50nm range = Diesel fuel

Decks
+6.9  Weather  Deck
+4.7  Battery Deck
+2.2  Armor Deck 140mm, on top of TDS
-0.3   
          -2.8 bottom main belt , top of Bulge
-2.8 
-5.3  Pierced by Engine compartments
-7.8  Engineering 
-9.18 Double Bottom