Vilnius Union Ships, 1930+: The Good, The Bad, and the Unseaworthy

[Kaiser Kirk]

Again, if you have a specific ship you'd like sketched, I could take a crack at it.  Tac seemed satisfied with my take on his cruiser.

BTW I do appreciate the offer, but most of my ships actually are not to my aesthetic tastes.
The 2x 4 gun batteries are efficient and I decided I'd do them this game, but I really prefer 4 turret designs, esp if the fore deck extends 40-45% for a HMS Tiger look...but that's not what I'm building. 

Granted, I like the toughness and firepower of my current designs. The main/sec/ter stack in A/B/C gives
some nice forward/aft DP&AA firing arcs...but they are not my idea of pretty.

:)

[TacCovert4]

Again, if you have a specific ship you'd like sketched, I could take a crack at it.  Tac seemed satisfied with my take on his cruiser.

BTW I do appreciate the offer, but most of my ships actually are not to my aesthetic tastes.
The 2x 4 gun batteries are efficient and I decided I'd do them this game, but I really prefer 4 turret designs, esp if the fore deck extends 40-45% for a HMS Tiger look...but that's not what I'm building. 

Granted, I like the toughness and firepower of my current designs. The main/sec/ter stack in A/B/C gives
some nice forward/aft DP&AA firing arcs...but they are not my idea of pretty.

:)

You don't like the Richelamato?  I'm shocked, shocked I say.......

[The Rock Doctor]

One option for a 1935 torpedo-boat.  Compared to the preceding A/C class, they're 100+ tonnes heavier, but have an extra 0.6 knots of speed, extra 500nm of cruising bunkerage, and an additional 50mm AA mounting aft.

Seakeeping is nominally below 1.00, but would be fine at 33.5 knots I'm sure.  It's a function of the newer engine year requiring more speed to maintain the 50% machinery weight.  Adding a transom into the mix completely messed this up, so I skipped that altogether.


Enter ship name, Enter country Enter ship type laid down 1935

Displacement:
   2,323 t light; 2,463 t standard; 2,808 t normal; 3,084 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (419.48 ft / 406.82 ft) x 39.04 ft x (15.09 / 16.07 ft)
   (127.86 m / 124.00 m) x 11.90 m  x (4.60 / 4.90 m)

Armament:
      4 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 400 per gun
     Dual purpose guns in deck and hoist mounts, 1935 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      6 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1935 Model
     2 x Twin mounts on sides, forward deck aft
      2 raised mounts
     1 x Twin mount on centreline, aft deck centre
      1 double raised mount
      8 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1935 Model
     4 x Twin mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 296 lbs / 134 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.18" / 30 mm   0.79" / 20 mm      1.18" / 30 mm
   2nd:   0.59" / 15 mm         -               -
   3rd:   0.59" / 15 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 54,960 shp / 41,000 Kw = 33.92 kts
   Range 6,000nm at 15.00 kts
   Bunker at max displacement = 621 tons

Complement:
   192 - 250

Cost:
   £1.559 million / $6.237 million

Distribution of weights at normal displacement:
   Armament: 85 tons, 3.0 %
      - Guns: 85 tons, 3.0 %
   Armour: 29 tons, 1.0 %
      - Armament: 29 tons, 1.0 %
   Machinery: 1,407 tons, 50.1 %
   Hull, fittings & equipment: 659 tons, 23.5 %
   Fuel, ammunition & stores: 485 tons, 17.3 %
   Miscellaneous weights: 144 tons, 5.1 %
      - Hull below water: 25 tons
      - On freeboard deck: 59 tons
      - Above deck: 60 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     667 lbs / 303 Kg = 10.0 x 5.1 " / 130 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.13
   Metacentric height 1.5 ft / 0.5 m
   Roll period: 13.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.40
   Seaboat quality  (Average = 1.00): 0.98

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.410 / 0.423
   Length to Beam Ratio: 10.42 : 1
   'Natural speed' for length: 20.17 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 71
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 3.94 ft / 1.20 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  23.95 ft / 7.30 m,  19.03 ft / 5.80 m
      - Forward deck:   30.00 %,  19.03 ft / 5.80 m,  19.03 ft / 5.80 m
      - Aft deck:   35.00 %,  11.15 ft / 3.40 m,  11.15 ft / 3.40 m
      - Quarter deck:   15.00 %,  11.15 ft / 3.40 m,  11.15 ft / 3.40 m
      - Average freeboard:      15.49 ft / 4.72 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 174.2 %
      - Above water (accommodation/working, high = better): 144.3 %
   Waterplane Area: 9,836 Square feet or 914 Square metres
   Displacement factor (Displacement / loading): 79 %
   Structure weight / hull surface area: 38 lbs/sq ft or 186 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.32
      - Overall: 0.55
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

[The Rock Doctor]

Or more of a Cadillac torpedo-boat, with 50% more heavy battery, even more speed (not that I really desire it) and a little less seakeeping.  Seakeeping would still be above 1.00 at 33.5 knots, apparently.


Enter ship name, Enter country Enter ship type laid down 1935

Displacement:
   2,497 t light; 2,671 t standard; 3,033 t normal; 3,323 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (439.16 ft / 426.51 ft) x 39.37 ft x (15.42 / 16.40 ft)
   (133.86 m / 130.00 m) x 12.00 m  x (4.70 / 5.00 m)

Armament:
      6 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 400 per gun
     Dual purpose guns in deck and hoist mounts, 1935 Model
     3 x 2-gun mounts on centreline ends, majority forward
      1 raised mount - superfiring
      6 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1935 Model
     2 x Twin mounts on sides, forward deck aft
      2 raised mounts
     1 x Twin mount on centreline, aft deck centre
      1 raised mount
      8 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1935 Model
     4 x Twin mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 432 lbs / 196 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.18" / 30 mm   0.79" / 20 mm      1.18" / 30 mm
   2nd:   0.59" / 15 mm         -               -
   3rd:   0.59" / 15 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 58,981 shp / 44,000 Kw = 34.35 kts
   Range 6,000nm at 15.00 kts
   Bunker at max displacement = 652 tons

Complement:
   203 - 265

Cost:
   £1.734 million / $6.934 million

Distribution of weights at normal displacement:
   Armament: 123 tons, 4.1 %
      - Guns: 123 tons, 4.1 %
   Armour: 26 tons, 0.9 %
      - Armament: 26 tons, 0.9 %
   Machinery: 1,516 tons, 50.0 %
   Hull, fittings & equipment: 687 tons, 22.7 %
   Fuel, ammunition & stores: 536 tons, 17.7 %
   Miscellaneous weights: 144 tons, 4.7 %
      - Hull below water: 25 tons
      - On freeboard deck: 59 tons
      - Above deck: 60 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     654 lbs / 297 Kg = 9.8 x 5.1 " / 130 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 1.5 ft / 0.5 m
   Roll period: 13.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.51
   Seaboat quality  (Average = 1.00): 0.94

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.410 / 0.422
   Length to Beam Ratio: 10.83 : 1
   'Natural speed' for length: 20.65 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 74
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 3.94 ft / 1.20 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  23.95 ft / 7.30 m,  19.03 ft / 5.80 m
      - Forward deck:   25.00 %,  19.03 ft / 5.80 m,  19.03 ft / 5.80 m
      - Aft deck:   40.00 %,  11.15 ft / 3.40 m,  11.15 ft / 3.40 m
      - Quarter deck:   15.00 %,  11.15 ft / 3.40 m,  11.15 ft / 3.40 m
      - Average freeboard:      15.09 ft / 4.60 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 177.4 %
      - Above water (accommodation/working, high = better): 138.4 %
   Waterplane Area: 10,399 Square feet or 966 Square metres
   Displacement factor (Displacement / loading): 78 %
   Structure weight / hull surface area: 39 lbs/sq ft or 193 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
   Ship has slow, easy roll, a good, steady gun platform
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

[The Rock Doctor]

Alternately, on 2,600 t, I can build the above with a large transom stern, 33.5 knots, and 0.75 hull strength so it's technically a cruiser rather than a destroyer. 

[Kaiser Kirk]

The basic problem is

One option for a 1935 torpedo-boat.  Compared to the preceding A/C class, they're 100+ tonnes heavier, but have an extra 0.6 knots of speed, extra 500nm of cruising bunkerage, and an additional 50mm AA mounting aft.

Seakeeping is nominally below 1.00, but would be fine at 33.5 knots I'm sure.  It's a function of the newer engine year requiring more speed to maintain the 50% machinery weight.  Adding a transom into the mix completely messed this up, so I skipped that altogether.

Snip noted long ago that 'poor' was likely the case for most real-world DDs.

Every so often something comes up where I feel the need to clarify how I *attempt* to marry SeeKrieg
with our Springsharps.

How exactly to treat various seakeepings is something I had to struggle with early on.

Snip's DDs with ~.72 seakeeping, rendering them less than poor and unstable ...in a hurricane comes to mind...some sunk.

Reality is, a large vessel handles waves better than small vessels, regardless of nominal seakeeping.
Destroyers rarely can make full speed except in fairly flat water.

I had the realization that accounting for seakeeping was needed, but
could be cumbersome, and I needed a method to evaluate it.
So what I decided was
A) only do it when it looks like it might matter - saves paperwork.
B) in rougher seas, look at the average freeboard height.
    - considered the bow height, but that heavily effects seakeeping in the first place, and was easy to manipulate with weird heights (odd a DD with a 10 high bow...)
C) If the waves are taller, that's an issue and the vessel has to slow down.

I was not expecting to look at the exact seakeeping numbers, but rather adjust that freeboard
height by 0.75 / 1.0 / 1.20 / 1.40% based on the 'poor/standard/good/excellent' text - as that was quicker to check and do than hunt through the SS for the exact number for each class

So a Destroyer with a 3m average freeboard and 'good seakeeping' of 1.26 would be able to go max speed in waves up to (3x1.2) 3.6m.

Granted, if anyone else is running the battle they may take a different path.

However the path I chose would not take into consideration the exact # for seakeeping, and so would penalize you based on the 'poor'.

A specific note stating the speed at which seakeeping is 1.0 is likely but not guaranteed to be noticed,

[The Rock Doctor]

A tiny carrier that is basically about lending a bit of air capability to a surface group.  Eight planes means hard decisions about what's embarked - eight bombers for ASW work, or eight fighters for air cover.  Or I suppose four of each in a convoy escort role.

Speed is of course excessive for convoy work, or even patrol functions with Union sloops, but appropriate for keeping up with frontline surface forces chasing raiders or stuff.



Enter ship name, Enter country Enter ship type laid down 1935

Displacement:
   6,840 t light; 7,096 t standard; 8,252 t normal; 9,176 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (485.04 ft / 462.60 ft) x 65.62 ft x (19.03 / 20.59 ft)
   (147.84 m / 141.00 m) x 20.00 m  x (5.80 / 6.28 m)

Armament:
      4 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 400 per gun
     Dual purpose guns in deck and hoist mounts, 1935 Model
     2 x Single mounts on sides aft
     1 x 2-gun mount on centreline, aft deck aft
      8 - 1.97" / 50.0 mm 60.0 cal guns - 4.19lbs / 1.90kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1935 Model
     4 x Twin mounts on sides, evenly spread
      12 - 0.59" / 15.0 mm 90.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1935 Model
     6 x Twin mounts on sides, evenly spread
      Weight of broadside 305 lbs / 138 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   1.18" / 30 mm      1.97" / 50 mm
   2nd:   0.59" / 15 mm         -               -
   3rd:   0.59" / 15 mm         -               -

   - Box over magazines:
   1.97" / 50 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 80,429 shp / 60,000 Kw = 32.05 kts
   Range 10,000nm at 15.00 kts
   Bunker at max displacement = 2,079 tons

Complement:
   432 - 562

Cost:
   £2.994 million / $11.976 million

Distribution of weights at normal displacement:
   Armament: 87 tons, 1.1 %
      - Guns: 87 tons, 1.1 %
   Armour: 86 tons, 1.0 %
      - Armament: 37 tons, 0.5 %
      - Armour Deck: 48 tons, 0.6 %
   Machinery: 2,285 tons, 27.7 %
   Hull, fittings & equipment: 3,317 tons, 40.2 %
   Fuel, ammunition & stores: 1,412 tons, 17.1 %
   Miscellaneous weights: 1,065 tons, 12.9 %
      - Hull below water: 396 tons
      - Hull above water: 380 tons
      - On freeboard deck: 89 tons
      - Above deck: 200 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     13,344 lbs / 6,053 Kg = 199.1 x 5.1 " / 130 mm shells or 1.6 torpedoes
   Stability (Unstable if below 1.00): 1.30
   Metacentric height 4.2 ft / 1.3 m
   Roll period: 13.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.08
   Seaboat quality  (Average = 1.00): 1.45

Hull form characteristics:
   Hull has low forecastle,
     a normal bow and small transom stern
   Block coefficient (normal/deep): 0.500 / 0.514
   Length to Beam Ratio: 7.05 : 1
   'Natural speed' for length: 23.47 kts
   Power going to wave formation at top speed: 67 %
   Trim (Max stability = 0, Max steadiness = 100): 48
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 13.12 ft / 4.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  25.59 ft / 7.80 m,  19.69 ft / 6.00 m
      - Forward deck:   30.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Aft deck:   35.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Quarter deck:   15.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Average freeboard:      28.03 ft / 8.54 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 104.5 %
      - Above water (accommodation/working, high = better): 269.6 %
   Waterplane Area: 20,709 Square feet or 1,924 Square metres
   Displacement factor (Displacement / loading): 138 %
   Structure weight / hull surface area: 90 lbs/sq ft or 438 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.84
      - Longitudinal: 4.82
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[TacCovert4]

Given what you're supporting with this ship, would it be better to cut the speed by a knot or two in favor of more aircraft?  At least get enough to put up a few scouts/bombers and a respectable CAP?

[The Rock Doctor]

If it were a convoy escort only, for sure, I could scale her down to 27 knots and put a much bigger group on her.

The problem is I want the ability to run with cruisers and torpedo-boats, so I like the 32 knots.  That might demand a larger hull - I've got 16 planes and 32 knots on sub-9,000 t hulls.

[Kaiser Kirk]

A tiny carrier that is basically about lending a bit of air capability to a surface group.  Eight planes means hard decisions about what's embarked - eight bombers for ASW work, or eight fighters for air cover.  Or I suppose four of each in a convoy escort role.

Speed is of course excessive for convoy work, or even patrol functions with Union sloops, but appropriate for keeping up with frontline surface forces chasing raiders or stuff.

Cute ship and a bit inspiring.
 have starting tinkering with small carriers to take my 'Falcon' class role, but currently I'm working at the other end of things making carriers with some offensive punch.
Alternately I may do more cruiser-carriers. The Avio Aristabara currently fulfill this role of fast aviation escort, and while they don't have a lot of planes, but even without any have a decent combat ability.

At this stage having multiple flight decks for launch rate and survivability is good, but
there is a certain inefficiency as 4 of these have 32 planes, but take 26,000 tons.

Personally in this range I was looking more at the non-carrier 6-plane rule to make MAC freighters an option or other aux options for at least the fleet escort role.

[TacCovert4]

They fall into the role that my condor class flight deck cruisers use on my end.  Which I need to decide if I'm going to do any more of those or not.

[Jefgte]

Air group a little weak, Update to 12, (6+6) to have 2+2 reserve & probably 8000t

...The problem is I want the ability to run with cruisers and torpedo-boats, so I like the 32 knots.  That might demand a larger hull - I've got 16 planes and 32 knots on sub-9,000 t hulls...

[The Rock Doctor]

Possible 1935 CL.  An extra turret forward - not great for close-range end-on fire, but a good firing arc otherwise.

Belt and main gun protection is heavier, bunkerage is higher.  A fair bit of remodeling sees one big funnel and the two floatplane hangers moved adjacent to it, leaving a much smaller aft superstructure and better positioning of the main and secondary directors there.

My headcanon says the single amidships catapult can clear those cranes when it rotates into launching positions.  Prove me wrong.



Enter ship name, Enter country Enter ship type laid down 1935

Displacement:
    9,141 t light; 9,663 t standard; 11,000 t normal; 12,069 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (618.98 ft / 603.67 ft) x 60.37 ft x (22.97 / 24.53 ft)
    (188.67 m / 184.00 m) x 18.40 m  x (7.00 / 7.48 m)

Armament:
      10 - 5.91" / 150 mm 50.0 cal guns - 121.25lbs / 55.00kg shells, 300 per gun
      Breech loading guns in turret on barbette mounts, 1935 Model
      5 x 2-gun mounts on centreline ends, majority forward
        2 raised mounts - superfiring
      8 - 3.94" / 100 mm 45.0 cal guns - 30.78lbs / 13.96kg shells, 400 per gun
      Anti-air guns in deck mounts, 1935 Model
      4 x Twin mounts on side ends, evenly spread
      12 - 1.97" / 50.0 mm 60.0 cal guns - 4.19lbs / 1.90kg shells, 1,500 per gun
      Anti-air guns in deck mounts, 1935 Model
      4 x Twin mounts on sides, evenly spread
      2 x Twin mounts on sides amidships
        2 double raised mounts
      8 - 0.59" / 15.0 mm 90.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
      Machine guns in deck mounts, 1935 Model
      4 x Twin mounts on sides, evenly spread
        4 raised mounts
      Weight of broadside 1,510 lbs / 685 kg

Armour:
  - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    4.72" / 120 mm    392.39 ft / 119.60 m    16.37 ft / 4.99 m
    Ends:    Unarmoured
      Main Belt covers 100 % of normal length
      Main Belt inclined 16.00 degrees (positive = in)

  - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    5.91" / 150 mm    1.97" / 50 mm        5.51" / 140 mm
    2nd:    0.79" / 20 mm    0.59" / 15 mm              -
    3rd:    0.59" / 15 mm          -                  -
    4th:    0.59" / 15 mm          -                  -

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

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

Machinery:
    Oil fired boilers, steam turbines,
    Geared drive, 2 shafts, 81,770 shp / 61,000 Kw = 32.10 kts
    Range 10,000nm at 15.00 kts
    Bunker at max displacement = 2,407 tons

Complement:
    536 - 698

Cost:
    £3.949 million / $15.797 million

Distribution of weights at normal displacement:
    Armament: 397 tons, 3.6 %
      - Guns: 397 tons, 3.6 %
    Armour: 2,620 tons, 23.8 %
      - Belts: 1,244 tons, 11.3 %
      - Armament: 445 tons, 4.0 %
      - Armour Deck: 881 tons, 8.0 %
      - Conning Tower: 50 tons, 0.5 %
    Machinery: 2,323 tons, 21.1 %
    Hull, fittings & equipment: 3,462 tons, 31.5 %
    Fuel, ammunition & stores: 1,858 tons, 16.9 %
    Miscellaneous weights: 340 tons, 3.1 %
      - On freeboard deck: 90 tons
      - Above deck: 250 tons

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      13,931 lbs / 6,319 Kg = 135.3 x 5.9 " / 150 mm shells or 2.0 torpedoes
    Stability (Unstable if below 1.00): 1.07
    Metacentric height 2.7 ft / 0.8 m
    Roll period: 15.5 seconds
    Steadiness    - As gun platform (Average = 50 %): 60 %
            - Recoil effect (Restricted arc if above 1.00): 0.43
    Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
    Hull has rise forward of midbreak,
      a normal bow and small transom stern
    Block coefficient (normal/deep): 0.460 / 0.473
    Length to Beam Ratio: 10.00 : 1
    'Natural speed' for length: 26.43 kts
    Power going to wave formation at top speed: 55 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): 20.00 degrees
    Stern overhang: 4.92 ft / 1.50 m
    Freeboard (% = length of deck as a percentage of waterline length):
                Fore end,    Aft end
      - Forecastle:    20.00 %,  28.54 ft / 8.70 m,  23.62 ft / 7.20 m
      - Forward deck:    35.00 %,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
      - Aft deck:    30.00 %,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Quarter deck:    15.00 %,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Average freeboard:        20.47 ft / 6.24 m

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 82.1 %
        - Above water (accommodation/working, high = better): 170.4 %
    Waterplane Area: 23,988 Square feet or 2,229 Square metres
    Displacement factor (Displacement / loading): 124 %
    Structure weight / hull surface area: 93 lbs/sq ft or 453 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0.85
        - Longitudinal: 1.36
        - Overall: 0.90
    Caution: Hull subject to strain in open-sea
    Excellent machinery, storage, compartmentation space
    Excellent accommodation and workspace room
    Good seaboat, rides out heavy weather easily

[The Rock Doctor]

I was able to make a SS report with a 6x2 gun ship in USS Worchester configuration and the old armor scheme, but I really didn't think it could actually fit on 185 metres.

[Kaiser Kirk]

My headcanon

Which summons to mind a profile view of a head with a turntable-mounted howitzer on it.

I was able to make a SS report with a 6x2 gun ship in USS Worchester configuration and the old armor scheme, but I really didn't think it could actually fit on 185 metres.

USS Wyoming fit 6x T2 12" on 169m, but only had 28,000shp, so limited machinery space,
coupled with a blocky BC and wide beam for more lateral space for it.

Granted a better parallel might be IJN Furutaka in who's original configuration was 6 x T1 200/50 on centerline on 185m. Spacewise, that would seem to indicate it fits.

A little beam and the same arrangement, and 2G 150mm should be doable. Heck, you might not even need the beam (though since the IJN ships were structurally weak, I'd advise it) for T2G 150 in the place of T1 200, according to SS the T2G even as a turret weighs less than the T1.