Aztec Ship Designs 1929-1934

[Kaiser Kirk]

That's what I did.  It was just quite a slog to do on the Implacable.  I'm working on the Sultan Ali slog now.  Paperwork, the bane of everyone's existence. 

The magazine limit I only apply to main batteries, that seems to be the goal, and RL practice.

As for the paperwork, at one point I made myself a little spreadsheet, but that was still a chore, and I would need a way to 'show my work'
so I detail the steps in the SS. Not that I expect anyone's checking...but if there's an obvious error folks can call me on it.

[TacCovert4]

The Gilgamesh came out at 3HY, the PD's before were 2HY.
You're allowed to pay over all the time, or lump sum it (aka preorder).

I note you have a large number of 120mm secondary mounts, (Ali's need to be toggled to twin)
Granted 6 per side isn't tremendous, though the Ali could potentially be showing 24 single mounts.

However, very very early on, there was a discussion about what could be fit on a ship and
we decided that as long as SS's happy with it, we don't micromanage such things. 

I had been thinking of the overhead profiles of the Americans and mentally limiting myself
to 5 per side typically, and often I used a  pattern with 'c' and 'w' mounts , then side mounts.
That could get me to 12 pretty easy, but I'm aiming for 10. When I build long ships I may add more.

Thanks, it's always something small and stupid that I wind up missing.

The Sultan Alis are quite lengthy, and the secbat is arranged in two pyramidal clusters per side, well, more like trapezoidal when you include the single installation of 40mm gatling in each cluster, fore clusters forward, aft clusters aft, to give maximum arc of fire.  With that, only one of each cluster can fire directly fore or aft, due to interference from other installations.

Overall, it's a somewhat less efficient gun arrangement than the 5 x arrangement on the NCs or SDs.  Of course the Sultan Ali is a VERY long ship for the main battery she has, so there's quite a bit of broadside to fit a powerful secondary/aa to.

[TacCovert4]

Fortunately, my conversions of my more modern warships to modern DP secondaries.....will be relatively cheap and quick, as a swap on say a Weapon's batteries is merely a pierside refit, stripping the deck mounts and putting new ones down and doing an FC Update.

[TacCovert4]

I just got done with the big run of I, J, and K class DDs.....which actually brings me up to decent DD numbers for the first time.  I'm working on other projects, like OPVs, right now, so my next DD class will go down when the new DP guns get researched.

As such......here's a concept for my 'Caribbean'....aka 'Big' 1931 DD.


L-Class, Aztec Destroyer laid down 1931

Displacement:
   2,500 t light; 2,676 t standard; 2,947 t normal; 3,164 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (450.08 ft / 442.91 ft) x 39.37 ft x (10.95 / 11.58 ft)
   (137.18 m / 135.00 m) x 12.00 m  x (3.34 / 3.53 m)

Armament:
      8 - 4.72" / 120 mm 55.0 cal guns - 56.91lbs / 25.81kg shells, 400 per gun
     Dual purpose guns in deck and hoist mounts, 1931 Model
     4 x Twin mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      4 - 1.57" / 40.0 mm 55.0 cal guns - 2.11lbs / 0.96kg shells, 2,000 per gun
     Anti-air guns in deck and hoist mount, 1931 Model
     1 x 4 row quad mount on centreline, aft deck centre
      1 raised mount
      10 - 1.18" / 30.0 mm 50.0 cal guns - 0.87lbs / 0.40kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1931 Model
     10 x Single mounts on side ends, majority aft
      Weight of broadside 472 lbs / 214 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm   0.79" / 20 mm      0.79" / 20 mm
   2nd:   0.79" / 20 mm   0.79" / 20 mm      0.79" / 20 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 55,834 shp / 41,652 Kw = 33.62 kts
   Range 5,000nm at 14.00 kts
   Bunker at max displacement = 487 tons

Complement:
   199 - 259

Cost:
   £1.525 million / $6.099 million

Distribution of weights at normal displacement:
   Armament: 136 tons, 4.6 %
      - Guns: 136 tons, 4.6 %
   Armour: 27 tons, 0.9 %
      - Armament: 27 tons, 0.9 %
   Machinery: 1,477 tons, 50.1 %
   Hull, fittings & equipment: 777 tons, 26.4 %
   Fuel, ammunition & stores: 447 tons, 15.2 %
   Miscellaneous weights: 84 tons, 2.9 %
      - Hull below water: 15 tons
      - Hull above water: 7 tons
      - On freeboard deck: 30 tons
      - Above deck: 32 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     767 lbs / 348 Kg = 14.5 x 4.7 " / 120 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.19
   Metacentric height 1.7 ft / 0.5 m
   Roll period: 12.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 60 %
         - 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 normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.540 / 0.548
   Length to Beam Ratio: 11.25 : 1
   'Natural speed' for length: 21.05 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 20.00 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 %,  19.69 ft / 6.00 m,  16.73 ft / 5.10 m
      - Forward deck:   30.00 %,  16.73 ft / 5.10 m,  16.73 ft / 5.10 m
      - Aft deck:   35.00 %,  16.73 ft / 5.10 m,  16.40 ft / 5.00 m
      - Quarter deck:   15.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      16.86 ft / 5.14 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 182.3 %
      - Above water (accommodation/working, high = better): 192.1 %
   Waterplane Area: 12,056 Square feet or 1,120 Square metres
   Displacement factor (Displacement / loading): 74 %
   Structure weight / hull surface area: 39 lbs/sq ft or 189 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.14
      - Overall: 0.54
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room

14t - 1918 FC
20t - 1x5x21in HW TT Centerline

15t - Enhanced Hydrophones
10t - 50 x DC

25t - NF Devices

[The Rock Doctor]

She'd be pretty capable.  I've been tinkering with similar ideas (albeit with 130mm instead).

[TacCovert4]

She'd be pretty capable.  I've been tinkering with similar ideas (albeit with 130mm instead).

The. Concept was a super tribal. 

Originally I wanted to have the protection of the I class.  But I can't and have the firepower,  so I chose the firepower.

I'll be tweaking it a lot.  I could probably cram the armor in there if I deleted the rotary 40mm in favor of the other (same cartridge) 40mm that I'm simultaneously developing (the rotary has a different-enough breech that I can't just 'make a single barrel version' if I'm being fair).  But with the idiom I'm making, the 40mm Rotary is a gun that we're going to be almost too enamored with in the 1930s.....though the bugs won't be worked out until at least the mid 40s.

The downside, of course, is that this is a 2500t DD.  She's a Big Big Girl.  So I'll also need to work on something a bit more 'reasonable' and 'small'

[Kaiser Kirk]

Interesting....not sold on it, but we each have our own needs.
You're going with a high (for a DD) BC of 0.54, which helps get you the higher machinery % at that speed.
Which helps keep the 'cost' of seakeeping reasonable.

I would suggest a couple tons less DCs and a couple of DC projectors instead.
Also, do you not expect to have Sonar by 1931 ? 10t for that would be nice.

Night Fighting : Hard category, in hindsight should have been defined up front I think.
25ts would be Cadillac package, so what a brit dreadnaught had - so searchlight towers, dedicated star shell guns, oversized binocs, etc.
Personally, for my DDs I'm ok stepping down from that for my DDs.

Also ever since the caicos, I put 2t for light paravanes on my DDs, 5t for regular on my larger ships.

But 2500 tons is a BIG destroyer.
Which means you can have less of them.
Depending on what the goal is, that may not be the bang for the buck you want.

I tend to look to my vessels for comparison what's doable,
and my last touchstone for comparison would be my 1925 'Babr' Corvettes.
The Babr (which may move from Ship thread to Encyclopedia while watching football tomorrow)
were meant as my Pacific or Oceanic Destroyers, but the Parthian navy got nervous pitching "destroyers"
at 1500 tons, when a decade before they were 750tons...so 'Corvettes.
But the trans-pacific role meant a ridiculous range for a DD - 6600nm.

Anyhow, comparing the two, the 1500 costs 60% of the 2500, but seems to be more like 70-75%
of the value. 1.7knots slower is probably the big knock, but the fuel is taking up a bunch of weight.

[TacCovert4]

Something like this would potentially be the follow up to the K-class, which is a solid general-purpose 1500t destroyer.  Optional would be deleting the secondary AA 40mm guns in favor of a 5th mount for the 120.....it's basically a wash between those two weapons.  One notable thing, compared to older DD classes, is you'll note these are equipped with NF Devices....as those are improving and will be improving further and becoming more important to small vessels.....so that's a lot of tonnage high up on a small ship, which means you're going to lose somewhere....like in your guns or protection.  And given the Aztec experience that its primary regional opponent is actually pretty good at chewing up torpedo-craft before they can get in and launch.....there's not a push to go with 8 or 10 torpedoes on these destroyers....rather to maximize firepower, and have enough torpedoes to land a telling shot if the opportunity arises, so a quintet of 21in HW torpedoes is present..

DD-M, Aztec Destroyer laid down 1932

Displacement:
   1,581 t light; 1,681 t standard; 1,882 t normal; 2,043 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (366.17 ft / 360.89 ft) x 31.17 ft x (11.48 / 12.23 ft)
   (111.61 m / 110.00 m) x 9.50 m  x (3.50 / 3.73 m)

Armament:
      4 - 4.72" / 120 mm 55.0 cal guns - 56.91lbs / 25.81kg shells, 400 per gun
     Dual purpose guns in deck mounts, 1932 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      4 - 1.57" / 40.0 mm 55.0 cal guns - 2.11lbs / 0.96kg shells, 1,000 per gun
     Anti-air guns in deck mounts, 1932 Model
     2 x Single mounts on centreline, aft deck forward
     2 x Single mounts on centreline, forward deck aft
      10 - 1.18" / 30.0 mm 50.0 cal guns - 0.87lbs / 0.40kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1932 Model
     10 x Twin mounts on side ends, majority forward
      Weight of broadside 245 lbs / 111 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.06" / 27 mm   1.06" / 27 mm            -
   2nd:   0.79" / 20 mm         -               -

   - Conning towers: Forward 1.06" / 27 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 41,234 shp / 30,761 Kw = 32.80 kts
   Range 5,000nm at 14.00 kts
   Bunker at max displacement = 362 tons

Complement:
   142 - 185

Cost:
   £0.938 million / $3.754 million

Distribution of weights at normal displacement:
   Armament: 58 tons, 3.1 %
      - Guns: 58 tons, 3.1 %
   Armour: 34 tons, 1.8 %
      - Armament: 30 tons, 1.6 %
      - Conning Tower: 3 tons, 0.2 %
   Machinery: 975 tons, 51.8 %
   Hull, fittings & equipment: 435 tons, 23.1 %
   Fuel, ammunition & stores: 301 tons, 16.0 %
   Miscellaneous weights: 80 tons, 4.3 %
      - Hull below water: 15 tons
      - On freeboard deck: 34 tons
      - Above deck: 31 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     465 lbs / 211 Kg = 8.8 x 4.7 " / 120 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.16
   Metacentric height 1.1 ft / 0.3 m
   Roll period: 12.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.36
   Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.510 / 0.520
   Length to Beam Ratio: 11.58 : 1
   'Natural speed' for length: 19.00 kts
   Power going to wave formation at top speed: 67 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   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 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Forward deck:   30.00 %,  19.69 ft / 6.00 m,  18.04 ft / 5.50 m
      - Aft deck:   35.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Quarter deck:   15.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Average freeboard:      14.52 ft / 4.43 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 178.1 %
      - Above water (accommodation/working, high = better): 142.1 %
   Waterplane Area: 7,563 Square feet or 703 Square metres
   Displacement factor (Displacement / loading): 70 %
   Structure weight / hull surface area: 30 lbs/sq ft or 148 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.63
      - Overall: 0.56
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

15t -Advanced  Hydrophones
12t - Depth Charges
2t - 2 x DC Thrower
20t - 1 x 5 x 21in HW TT Centerline
6t - 1918 FC
25t - NF Devices

[TacCovert4]

Interesting....not sold on it, but we each have our own needs.
You're going with a high (for a DD) BC of 0.54, which helps get you the higher machinery % at that speed.
Which helps keep the 'cost' of seakeeping reasonable.

I would suggest a couple tons less DCs and a couple of DC projectors instead.
Also, do you not expect to have Sonar by 1931 ? 10t for that would be nice.

Night Fighting : Hard category, in hindsight should have been defined up front I think.
25ts would be Cadillac package, so what a brit dreadnaught had - so searchlight towers, dedicated star shell guns, oversized binocs, etc.
Personally, for my DDs I'm ok stepping down from that for my DDs.

Also ever since the caicos, I put 2t for light paravanes on my DDs, 5t for regular on my larger ships.

But 2500 tons is a BIG destroyer.
Which means you can have less of them.
Depending on what the goal is, that may not be the bang for the buck you want.

I tend to look to my vessels for comparison what's doable,
and my last touchstone for comparison would be my 1925 'Babr' Corvettes.
The Babr (which may move from Ship thread to Encyclopedia while watching football tomorrow)
were meant as my Pacific or Oceanic Destroyers, but the Parthian navy got nervous pitching "destroyers"
at 1500 tons, when a decade before they were 750tons...so 'Corvettes.
But the trans-pacific role meant a ridiculous range for a DD - 6600nm.

Anyhow, comparing the two, the 1500 costs 60% of the 2500, but seems to be more like 70-75%
of the value. 1.7knots slower is probably the big knock, but the fuel is taking up a bunch of weight.

You were posting while I was.

As you can see, for 'utility', the 1500t DD is honestly a bit superior.  And yes, I tend to go a bit thick on my DDs when I could go super fine in their lines....but I'm also getting VERY reasonable stability, even with a nice slow roll.  The big DDs, like my I class, tend to be more 'leaders' or 'gunslingers' for fleet operations.  The idea of the L-class is 'How much Dakka can I put on a DD for the battle with the opposing screen'. 

And yes, I'll probably need to consider Sonar coming up.  Though at the moment I don't have the installations started, and the first series of installations will undoubtedly go on OPVs, and then on 'General Purpose' DDs.

Good to note that the 25t for NF Devices is functionally counting for a number of searchlights and probably enough tonnage to put a radar installation onboard.  I've got time until we hit these being laid down, so I may decide to cut that back somewhat, or I may decide that I'm going to go the route of being the ultimate nightfighters....given the absolute disparity in my forces compared to all the major powers also running around in my back yard, that's not exactly out of the question

[Kaiser Kirk]

I'm actually expecting these super DDs to be Foxy's mode of choice for asymmetric torpedo platforms and night attacks.
Big enough 1 shell doesn't stop. fast enough to close to range in the dark, yet hold a number of torpedoes.
Your experience has pushed the design to a different direction.
One of the side effects of all the big fast ships in the world is they are harder to hit at range, and can turn and run from distant torp launches.
I think effective torpedo range will probably be rather short, and very very bloody in daylight, which means night fighting.

The bennie of your DD is it can step in for a light cruiser in commerce raiding and the like. Of course it's getting into light cruiser size ranges.

[TacCovert4]

I'm actually expecting these super DDs to be Foxy's mode of choice for asymmetric torpedo platforms and night attacks.
Big enough 1 shell doesn't stop. fast enough to close to range in the dark, yet hold a number of torpedoes.
Your experience has pushed the design to a different direction.
One of the side effects of all the big fast ships in the world is they are harder to hit at range, and can turn and run from distant torp launches.
I think effective torpedo range will probably be rather short, and very very bloody in daylight, which means night fighting.

The bennie of your DD is it can step in for a light cruiser in commerce raiding and the like. Of course it's getting into light cruiser size ranges.

It's a bit short-legged for that.  But I haven't done a DD-N, a Pacific-ized version.  The DD-J runs 100s instead of 130s to get fantastic range on the high seas.......I may consider a few options for a DD-N that can get me the sort of range I'd need to really go trans-oceanic on a DD without needing a fleet tender right there.

It's really only now that the vision I had after the Caicos, namely a fleet of torpedo boats being guided by leader ships that could see in the dark but were fast enough to do the job too, is becoming possible.  And now is incidentally when other experiences have turned things towards a navy that is very heavy in firepower and protection and speed....at the expense of 'less effective' secondary weapons like torpedoes.  Torpedoes in the RAN are currently more considered as a stand off weapon to force an enemy force to break off, or to finish off cripples, not a serious weapon to charge at the battle line, turn and give them a broadside of fish.

[TacCovert4]

And taking the concept behind the J-class which is my 'Pacific Crossing DD', and modernizing it, you get the N-Class.  9200nm range at 14kts, top speed of 34kts.  10 x Torpedoes.  Full suite of ASW equipment.  Minesweeping ability to a degree.  And even tonnage put towards the literal comfort of the crew and giving them better spaces.  A gun battery that is honestly probably better at AA than it is at anti-surface is really its only downside.  She's made to patrol or escort across the Pacific, not go gun for gun in a duel with the Mayan's Caribbean Fleet.

N-Class, Aztec Destroyer laid down 1932

Displacement:
   2,481 t light; 2,600 t standard; 3,026 t normal; 3,366 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (465.29 ft / 459.32 ft) x 39.37 ft x (11.48 / 12.46 ft)
   (141.82 m / 140.00 m) x 12.00 m  x (3.50 / 3.80 m)

Armament:
      8 - 3.54" / 90.0 mm 55.0 cal guns - 24.01lbs / 10.89kg shells, 500 per gun
     Dual purpose guns in deck mounts, 1932 Model
     4 x Twin mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      12 - 1.18" / 30.0 mm 50.0 cal guns - 0.87lbs / 0.40kg shells, 1,000 per gun
     Quick firing guns in deck and hoist mounts, 1932 Model
     6 x Twin mounts on sides, evenly spread
      Weight of broadside 203 lbs / 92 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.06" / 27 mm   1.06" / 27 mm            -
   2nd:         -            -         0.79" / 20 mm

   - Box over magazines:
   1.06" / 27 mm

   - Conning towers: Forward 1.06" / 27 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 56,977 shp / 42,505 Kw = 34.00 kts
   Range 8,000nm at 14.00 kts
   Bunker at max displacement = 766 tons

Complement:
   203 - 265

Cost:
   £1.443 million / $5.770 million

Distribution of weights at normal displacement:
   Armament: 42 tons, 1.4 %
      - Guns: 42 tons, 1.4 %
   Armour: 49 tons, 1.6 %
      - Armament: 25 tons, 0.8 %
      - Armour Deck: 19 tons, 0.6 %
      - Conning Tower: 5 tons, 0.2 %
   Machinery: 1,552 tons, 51.3 %
   Hull, fittings & equipment: 667 tons, 22.0 %
   Fuel, ammunition & stores: 545 tons, 18.0 %
   Miscellaneous weights: 171 tons, 5.7 %
      - Hull below water: 25 tons
      - Hull above water: 20 tons
      - On freeboard deck: 72 tons
      - Above deck: 54 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     825 lbs / 374 Kg = 37.1 x 3.5 " / 90 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.31
   Metacentric height 2.0 ft / 0.6 m
   Roll period: 11.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.12
   Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.510 / 0.523
   Length to Beam Ratio: 11.67 : 1
   'Natural speed' for length: 21.43 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 20.00 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 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Forward deck:   30.00 %,  16.40 ft / 5.00 m,  14.76 ft / 4.50 m
      - Aft deck:   35.00 %,  14.76 ft / 4.50 m,  14.76 ft / 4.50 m
      - Quarter deck:   15.00 %,  14.76 ft / 4.50 m,  14.76 ft / 4.50 m
      - Average freeboard:      15.34 ft / 4.68 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 173.0 %
      - Above water (accommodation/working, high = better): 172.8 %
   Waterplane Area: 12,159 Square feet or 1,130 Square metres
   Displacement factor (Displacement / loading): 82 %
   Structure weight / hull surface area: 33 lbs/sq ft or 162 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 0.79
      - Overall: 0.52
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

4t - 1918 FC
40t - 2x4x21in HW TT Centerline
15t - Enhanced Hydrophones 1915
10t - Sonar
2t - 2 x DC Thrower
10t - Minesweeping Paravanes
20t - 100 x 195kg DC
25t - NF Devices
25t - LR Radio
20t - Enhanced Crew Accommodations

[TacCovert4]

Acapulco, Aztec Battleship laid down 1930

Displacement:
   26,995 t light; 28,820 t standard; 30,648 t normal; 32,110 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (594.60 ft / 590.55 ft) x 108.27 ft x (26.21 / 27.27 ft)
   (181.23 m / 180.00 m) x 33.00 m  x (7.99 / 8.31 m)

Armament:
      9 - 14.17" / 360 mm 45.0 cal guns - 1,435.69lbs / 651.22kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1930 Model
     3 x 3-gun mounts on centreline, forward evenly spread
      1 raised mount
      20 - 4.72" / 120 mm 55.0 cal guns - 56.90lbs / 25.81kg shells, 400 per gun
     Dual purpose guns in deck and hoist mounts, 1930 Model
     8 x Twin mounts on sides, aft evenly spread
      2 raised mounts
     2 x Twin mounts on centreline, aft deck aft
      1 raised mount - superfiring
      16 - 1.57" / 40.0 mm 55.0 cal guns - 2.12lbs / 0.96kg shells, 4,000 per gun
     Anti-air guns in deck and hoist mounts, 1930 Model
     4 x 4 row quad mounts on sides, aft evenly spread
      4 raised mounts
      32 - 1.18" / 30.0 mm 50.0 cal guns - 0.86lbs / 0.39kg shells, 1,500 per gun
     Anti-air guns in deck and hoist mounts, 1930 Model
     16 x Single mounts on sides, evenly spread
      Weight of broadside 14,121 lbs / 6,405 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.4" / 315 mm   383.86 ft / 117.00 m   16.40 ft / 5.00 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length
     Main Belt inclined -10.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.77" / 45 mm   383.86 ft / 117.00 m   25.13 ft / 7.66 m
   Beam between torpedo bulkheads 88.58 ft / 27.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 380 mm   8.27" / 210 mm      13.8" / 350 mm
   2nd:   3.15" / 80 mm   1.57" / 40 mm      3.15" / 80 mm
   3rd:   0.98" / 25 mm   0.98" / 25 mm      0.98" / 25 mm
   4th:         -      0.04" / 1 mm      0.98" / 25 mm

   - Armoured deck - multiple decks:
   For and Aft decks: 5.51" / 140 mm

   - Conning towers: Forward 7.09" / 180 mm, Aft 7.09" / 180 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 62,248 shp / 46,437 Kw = 24.00 kts
   Range 8,000nm at 14.00 kts
   Bunker at max displacement = 3,290 tons

Complement:
   1,157 - 1,505

Cost:
   £10.692 million / $42.768 million

Distribution of weights at normal displacement:
   Armament: 3,026 tons, 9.9 %
      - Guns: 3,026 tons, 9.9 %
   Armour: 11,063 tons, 36.1 %
      - Belts: 3,514 tons, 11.5 %
      - Torpedo bulkhead: 632 tons, 2.1 %
      - Armament: 2,563 tons, 8.4 %
      - Armour Deck: 4,054 tons, 13.2 %
      - Conning Towers: 299 tons, 1.0 %
   Machinery: 1,886 tons, 6.2 %
   Hull, fittings & equipment: 10,259 tons, 33.5 %
   Fuel, ammunition & stores: 3,653 tons, 11.9 %
   Miscellaneous weights: 760 tons, 2.5 %
      - Hull below water: 297 tons
      - Hull above water: 153 tons
      - On freeboard deck: 110 tons
      - Above deck: 200 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     46,377 lbs / 21,036 Kg = 32.6 x 14.2 " / 360 mm shells or 8.7 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 7.5 ft / 2.3 m
   Roll period: 16.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.44
   Seaboat quality  (Average = 1.00): 1.03

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.640 / 0.645
   Length to Beam Ratio: 5.45 : 1
   'Natural speed' for length: 24.30 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 68
   Bow angle (Positive = bow angles forward): 10.00 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 %,  22.97 ft / 7.00 m,  19.69 ft / 6.00 m
      - Forward deck:   30.00 %,  19.69 ft / 6.00 m,  16.40 ft / 5.00 m
      - Aft deck:   35.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Quarter deck:   15.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      17.81 ft / 5.43 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 77.2 %
      - Above water (accommodation/working, high = better): 137.1 %
   Waterplane Area: 48,532 Square feet or 4,509 Square metres
   Displacement factor (Displacement / loading): 108 %
   Structure weight / hull surface area: 191 lbs/sq ft or 934 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.51
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

100t - Additional DC Equipment
197t - 70mm Box over Magazines

110t - 4 x Armed Floatplane and 2 x Catapults

25t - NF Devices
25t - LR Radio
303t - 1918 FC

Armor Deck is 120mm w/ 20mm Splinter
Belt is 340mm in upper half, tapering to 240mm in below water lower half
70mm Box over Magazine Spaces

[Kaiser Kirk]

OH CRUD.
Sorry Tac, did this to Rocky once.
Mod-ability means if I accidentally hit "modify" instead of "reply"...I edit the post.
Terribly sorry, could you be so kind s to repost the battlewagon?

....mag box is considered 'laminated' underneath the splinter deck giving it about an 80mm top protection equivalent. 

   (181.23 m / 180.00 m) x 33.00 m  x (7.99 / 8.31 m)

If recollection serves, prior modeling it seems that the 'mag box' creates a box the width of the hull, 3.5m high and with a roof.
So yours is laminated to a splinter deck and has ~5m of space below it.
That could work.  I generally expect an air gap to ensure that if there is a partial penetration pressure wave, hot chunks of plate aren't spalled off
the roof of my magazine.

[The Rock Doctor]

Dude, at least let him build it before you annihilate it.