Vilnius Union Ships, 1920+: Electric Drive Boogaloo

[Kaiser Kirk]

I've had some similar designs, the Sea Hornets as I recall.
I like the concept... the spare tonnage has always seemed to elude me.

Hmm, seems like I had a variety.
Anyhow browsing my versions to contrast to yours..

The last was managing 650 tons, 4x90... only 29.4knts, but I was
planning for colonial so 1 boiler was oil-sprayed coal (or wood).
So similar ballpark.

I see I was looking at range through the view of a high speed run.
I think conceptually they'd make 12-16hr runs in good weather, so I didn't need 1.0 seakeeping.
I see one calculated for a 1 hr run at 31 knots, plus 24hours at 21 knots. Be very hard to intercept.

I was also mainly planning 18". The vast majority of ships out there don't have TDS,
so # of torps to increase the chance of a hit seemed better, and even
with a TDS, a hole is likely to impose some penalty.

There's of course some with 12x 21" but only 1-2 x 90mm... and no Leader abilities.
Different explorations.

So you're in a tight window, allocating that misc wt is up to you, I'd suggest more torps
and taking a hard look at what range you actually need for your goals.
Those MTBs will only have 2000, do you need 3000 ?

[Jefgte]

I would suggest,  since you have passed 500t, take it up to 750t. See how much more speed you can put in, even if you reduce range to 3000nm. I'd also suggest a 6 torpedo broadside.   This ship will be able to launch torps from nearly double the effective range of an MTB.  Make the best use of it.  They can launch while their mtbs are retreating,

Byzantine T500M & T500H class TB had 6TTx533HW. => You could have 6TT on 750t.

[The Rock Doctor]

A Cadillac version of the previous design.

Bigger and faster, with enhanced hydrophones and an actual honest-to-God Huelsmeyer device for target location purposes.  I'm not convinced this is necessarily the way to go, but it puts a ceiling on the concept at least.  Much bigger than that and I might as well just relegate some of my middle-aged torpedo-boats to do this world instead of building new.

Enter ship name, Enter country Enter ship type laid down 1926

Displacement:
   945 t light; 984 t standard; 1,036 t normal; 1,078 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (309.00 ft / 298.56 ft) x 27.23 ft x (11.15 / 11.45 ft)
   (94.18 m / 91.00 m) x 8.30 m  x (3.40 / 3.49 m)

Armament:
      4 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 250 per gun
     Quick firing guns in deck mounts, 1926 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      4 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1926 Model
     2 x Twin mounts on sides amidships
      1 - 1.97" / 50.0 mm 45.0 cal gun - 3.85lbs / 1.74kg shells, 250 per gun
     Anti-air gun in deck mount, 1926 Model
     1 x Single mount on centreline, aft deck centre
      1 raised mount
      Weight of broadside 127 lbs / 58 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm   0.12" / 3 mm            -
   3rd:   0.59" / 15 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 26,810 shp / 20,000 Kw = 32.02 kts
   Range 3,500nm at 10.00 kts
   Bunker at max displacement = 94 tons

Complement:
   90 - 118

Cost:
   £0.396 million / $1.583 million

Distribution of weights at normal displacement:
   Armament: 23 tons, 2.3 %
   Armour: 6 tons, 0.6 %
      - Armament: 6 tons, 0.6 %
   Machinery: 537 tons, 51.8 %
   Hull, fittings & equipment: 288 tons, 27.8 %
   Fuel, ammunition & stores: 92 tons, 8.9 %
   Miscellaneous weights: 90 tons, 8.7 %
      - Hull below water: 15 tons
      - On freeboard deck: 22 tons
      - Above deck: 53 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     280 lbs / 127 Kg = 9.2 x 3.9 " / 100 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.16
   Metacentric height 0.9 ft / 0.3 m
   Roll period: 11.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.28
   Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.400 / 0.406
   Length to Beam Ratio: 10.96 : 1
   'Natural speed' for length: 17.28 kts
   Power going to wave formation at top speed: 67 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 20.00 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 %,  19.69 ft / 6.00 m,  15.75 ft / 4.80 m
      - Forward deck:   36.00 %,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Aft deck:   29.00 %,  7.87 ft / 2.40 m,  7.87 ft / 2.40 m
      - Quarter deck:   15.00 %,  7.87 ft / 2.40 m,  7.87 ft / 2.40 m
      - Average freeboard:      12.60 ft / 3.84 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 175.9 %
      - Above water (accommodation/working, high = better): 129.6 %
   Waterplane Area: 5,004 Square feet or 465 Square metres
   Displacement factor (Displacement / loading): 55 %
   Structure weight / hull surface area: 28 lbs/sq ft or 137 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 2.26
      - Overall: 0.58
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent

Fittings: 
-15 t:  Enhanced hydrophone package (BW)
-16 t:  1x4 heavyweight 53cm torpedoes (FD)
-3t:  Fire control (AD)
-5 t:  Night-fighting doodads (AD)
-20 t:  MTB squadron command center and maybe a bit of weight reserve (AD)
-25 t:  1922 pattern refined Huelsmeyer device (AD)
-6 t:  Weight reserve (FD)

[The Rock Doctor]

The two Klinovic class monitors are a quarter-century old, slow, not armored against mines or torpedoes, and ship a 280mm/40cal gun that is otherwise no longer in service in the Union Navy.

Since the 280mm/45 gun is also not long for this world, a potential replacement would scale up to the 300mm/45cal weapon used on several capital ships.  Protection against enemy ships would diminish, but survivability against underwater damage and aerial attacks would increase.  Consequently, the hull is going to be larger than the Klinovics.

Of course, the question is - do the Klinovics need to be replaced?  The Union has three - perhaps soon to be four - large monitors already in service for general shore bombardment/station command/gunnery training functions, and the Denmark Straits might not need this kind of firepower now that we have subs and airplanes to supplement the Swarm.

Anyway:

Enter ship name, Enter country Enter ship type laid down 1926

Displacement:
   6,191 t light; 6,475 t standard; 6,729 t normal; 6,932 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (363.30 ft / 354.33 ft) x 82.02 ft x (12.47 / 12.79 ft)
   (110.73 m / 108.00 m) x 25.00 m  x (3.80 / 3.90 m)

Armament:
      2 - 11.81" / 300 mm 45.0 cal guns - 830.84lbs / 376.86kg shells, 100 per gun
     Breech loading guns in turret on barbette mount, 1926 Model
     1 x 2-gun mount on centreline, forward deck centre
      1 raised mount
      4 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 250 per gun
     Quick firing guns in deck and hoist mounts, 1926 Model
     2 x 2-gun mounts on centreline, aft deck aft
      1 raised mount - superfiring
      4 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 250 per gun
     Anti-air guns in deck mounts, 1926 Model
     4 x Single mounts on sides, evenly spread
      12 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1926 Model
     6 x Single mounts on sides, evenly spread
      6 double raised mounts
      Weight of broadside 2,057 lbs / 933 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.94" / 100 mm   230.31 ft / 70.20 m   16.37 ft / 4.99 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead:
      1.97" / 50 mm   230.31 ft / 70.20 m   11.65 ft / 3.55 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.8" / 300 mm   3.94" / 100 mm      7.87" / 200 mm
   2nd:   1.97" / 50 mm   1.18" / 30 mm      1.97" / 50 mm
   3rd:   0.79" / 20 mm   0.59" / 15 mm            -
   4th:   0.59" / 15 mm         -               -

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

   - Conning towers: Forward 3.94" / 100 mm,  Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 2 shafts, 5,363 shp / 4,000 Kw = 15.19 kts
   Range 5,000nm at 10.00 kts
   Bunker at max displacement = 457 tons

Complement:
   370 - 482

Cost:
   £1.479 million / $5.916 million

Distribution of weights at normal displacement:
   Armament: 462 tons, 6.9 %
   Armour: 2,121 tons, 31.5 %
      - Belts: 702 tons, 10.4 %
      - Torpedo bulkhead: 195 tons, 2.9 %
      - Armament: 376 tons, 5.6 %
      - Armour Deck: 817 tons, 12.1 %
      - Conning Tower: 30 tons, 0.4 %
   Machinery: 172 tons, 2.6 %
   Hull, fittings & equipment: 3,049 tons, 45.3 %
   Fuel, ammunition & stores: 538 tons, 8.0 %
   Miscellaneous weights: 387 tons, 5.8 %
      - Hull below water: 43 tons
      - Hull above water: 108 tons
      - On freeboard deck: 36 tons
      - Above deck: 200 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     25,192 lbs / 11,427 Kg = 30.6 x 11.8 " / 300 mm shells or 8.0 torpedoes
   Stability (Unstable if below 1.00): 1.39
   Metacentric height 6.6 ft / 2.0 m
   Roll period: 13.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.27
   Seaboat quality  (Average = 1.00): 1.56

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.650 / 0.653
   Length to Beam Ratio: 4.32 : 1
   'Natural speed' for length: 18.82 kts
   Power going to wave formation at top speed: 41 %
   Trim (Max stability = 0, Max steadiness = 100): 64
   Bow angle (Positive = bow angles forward): 10.00 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 %,  22.97 ft / 7.00 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:      15.41 ft / 4.70 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 49.7 %
      - Above water (accommodation/working, high = better): 169.5 %
   Waterplane Area: 22,264 Square feet or 2,068 Square metres
   Displacement factor (Displacement / loading): 145 %
   Structure weight / hull surface area: 124 lbs/sq ft or 604 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.90
      - Longitudinal: 2.35
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

BW:  Electric drive
AW:  Torpedo nets
FD:  Weight reserve
AD:  FC + L/R wireless + nightfighting + command centre

[Jefgte]

Is it possible to update them to 19kts like the Wspanialy and install 2T2x250 instead of the 2T1x300 ?

Just an idea...

[The Rock Doctor]

On a slightly heavier hull with more length and depth, yes.

[The Rock Doctor]

So this is what I understand Jef to be suggesting:

Enter ship name, Enter country Enter ship type laid down 1926

Displacement:
   6,644 t light; 7,019 t standard; 7,854 t normal; 8,522 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (470.39 ft / 456.04 ft) x 65.62 ft x (18.37 / 19.55 ft)
   (143.38 m / 139.00 m) x 20.00 m  x (5.60 / 5.96 m)

Armament:
      4 - 9.84" / 250 mm 45.0 cal guns - 480.81lbs / 218.09kg shells, 150 per gun
     Breech loading guns in turret on barbette mounts, 1926 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      4 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 250 per gun
     Quick firing guns in deck and hoist mounts, 1926 Model
     2 x 2-gun mounts on centreline, evenly spread
      2 raised mounts
      4 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 250 per gun
     Anti-air guns in deck mounts, 1926 Model
     4 x Single mounts on sides amidships
      4 raised mounts
      12 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1926 Model
     6 x Twin mounts on sides amidships
      6 raised mounts
      Weight of broadside 2,318 lbs / 1,052 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5.91" / 150 mm   296.42 ft / 90.35 m   16.37 ft / 4.99 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7.87" / 200 mm   3.94" / 100 mm      7.87" / 200 mm
   2nd:   1.97" / 50 mm   1.18" / 30 mm      1.97" / 50 mm
   3rd:   0.79" / 20 mm   0.79" / 20 mm            -
   4th:   0.59" / 15 mm         -               -

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

   - Conning towers: Forward 7.87" / 200 mm,  Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 13,405 shp / 10,000 Kw = 20.06 kts
   Range 18,000nm at 10.00 kts
   Bunker at max displacement = 1,503 tons

Complement:
   416 - 542

Cost:
   £1.744 million / $6.974 million

Distribution of weights at normal displacement:
   Armament: 631 tons, 8.0 %
   Armour: 2,456 tons, 31.3 %
      - Belts: 1,226 tons, 15.6 %
      - Armament: 431 tons, 5.5 %
      - Armour Deck: 732 tons, 9.3 %
      - Conning Tower: 67 tons, 0.9 %
   Machinery: 429 tons, 5.5 %
   Hull, fittings & equipment: 2,828 tons, 36.0 %
   Fuel, ammunition & stores: 1,210 tons, 15.4 %
   Miscellaneous weights: 300 tons, 3.8 %
      - On freeboard deck: 100 tons
      - Above deck: 200 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     20,963 lbs / 9,509 Kg = 44.0 x 9.8 " / 250 mm shells or 4.0 torpedoes
   Stability (Unstable if below 1.00): 1.15
   Metacentric height 3.4 ft / 1.0 m
   Roll period: 14.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.59
   Seaboat quality  (Average = 1.00): 1.85

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.510
   Length to Beam Ratio: 6.95 : 1
   'Natural speed' for length: 21.36 kts
   Power going to wave formation at top speed: 43 %
   Trim (Max stability = 0, Max steadiness = 100): 54
   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 %,  25.92 ft / 7.90 m,  21.00 ft / 6.40 m
      - Forward deck:   30.00 %,  21.00 ft / 6.40 m,  21.00 ft / 6.40 m
      - Aft deck:   35.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Quarter deck:   15.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Average freeboard:      17.45 ft / 5.32 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 44.4 %
      - Above water (accommodation/working, high = better): 153.0 %
   Waterplane Area: 19,937 Square feet or 1,852 Square metres
   Displacement factor (Displacement / loading): 139 %
   Structure weight / hull surface area: 110 lbs/sq ft or 539 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.93
      - Longitudinal: 1.98
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[The Rock Doctor]

It can get a fair bit better on not much more tonnage.  Wesworld vets will recall the proliferation of "escort cruisers" in this size range.

Enter ship name, Enter country Enter ship type laid down 1926

Displacement:
   7,679 t light; 8,158 t standard; 9,071 t normal; 9,801 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (490.08 ft / 475.72 ft) x 65.62 ft x (20.34 / 21.57 ft)
   (149.38 m / 145.00 m) x 20.00 m  x (6.20 / 6.57 m)

Armament:
      6 - 9.84" / 250 mm 45.0 cal guns - 480.81lbs / 218.09kg shells, 150 per gun
     Breech loading guns in turret on barbette mounts, 1926 Model
     3 x 2-gun mounts on centreline ends, majority aft
      4 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 250 per gun
     Quick firing guns in deck and hoist mounts, 1926 Model
     1 x 2-gun mount on centreline, forward deck centre
      1 raised mount
     1 x 2-gun mount on centreline, aft deck forward
      1 raised mount
      4 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 250 per gun
     Anti-air guns in deck mounts, 1926 Model
     4 x Single mounts on sides amidships
      4 raised mounts
      12 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1926 Model
     6 x Twin mounts on sides amidships
      6 raised mounts
      Weight of broadside 3,280 lbs / 1,488 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5.91" / 150 mm   296.42 ft / 90.35 m   16.37 ft / 4.99 m
   Ends:   Unarmoured
     Main Belt covers 96 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7.87" / 200 mm   2.95" / 75 mm      5.91" / 150 mm
   2nd:   1.97" / 50 mm   1.18" / 30 mm      1.97" / 50 mm
   3rd:   0.79" / 20 mm   0.79" / 20 mm            -
   4th:   0.59" / 15 mm         -               -

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

   - Conning towers: Forward 7.87" / 200 mm,  Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 26,809 shp / 20,000 Kw = 23.61 kts
   Range 18,000nm at 10.00 kts
   Bunker at max displacement = 1,642 tons

Complement:
   464 - 604

Cost:
   £2.387 million / $9.548 million

Distribution of weights at normal displacement:
   Armament: 898 tons, 9.9 %
   Armour: 2,533 tons, 27.9 %
      - Belts: 1,230 tons, 13.6 %
      - Armament: 466 tons, 5.1 %
      - Armour Deck: 764 tons, 8.4 %
      - Conning Tower: 74 tons, 0.8 %
   Machinery: 858 tons, 9.5 %
   Hull, fittings & equipment: 3,090 tons, 34.1 %
   Fuel, ammunition & stores: 1,392 tons, 15.3 %
   Miscellaneous weights: 300 tons, 3.3 %
      - On freeboard deck: 100 tons
      - Above deck: 200 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     16,308 lbs / 7,397 Kg = 34.2 x 9.8 " / 250 mm shells or 2.7 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 3.6 ft / 1.1 m
   Roll period: 14.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.59
   Seaboat quality  (Average = 1.00): 1.48

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.509
   Length to Beam Ratio: 7.25 : 1
   'Natural speed' for length: 21.81 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 47
   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 %,  25.92 ft / 7.90 m,  21.00 ft / 6.40 m
      - Forward deck:   30.00 %,  21.00 ft / 6.40 m,  21.00 ft / 6.40 m
      - Aft deck:   35.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Quarter deck:   15.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Average freeboard:      17.45 ft / 5.32 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 62.8 %
      - Above water (accommodation/working, high = better): 143.1 %
   Waterplane Area: 20,798 Square feet or 1,932 Square metres
   Displacement factor (Displacement / loading): 122 %
   Structure weight / hull surface area: 117 lbs/sq ft or 571 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.93
      - Longitudinal: 1.92
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[Jefgte]

More chance to hit with 4 guns than with 2.
A good patrol and escort ship capable of deterring a 6000t cruiser from attacking.
It's up to you to see the cost and your BP availability.

Attention to rules about the length of the ship.

The bow may be lengthened by up to 5% of overall length. A new section may be added amidships, up to 5% of overall length.

By raising the forecastle, 19kts should be possible to work with Wspanialy.

;)

[The Rock Doctor]

Wspanially's probably out of service in five years time, though.  Or at least relegated to reserve/shore bombardment type roles. 

[The Rock Doctor]

So if you didn't like that, you'll really not like this.

This would be a testbed for a 2-gun 450mm turret, which drives the hull size in terms of needing the beam, length, and 5.5 decks to accommodate the turret and barbette.

But since I've got that hull and the hull strength that goes with it, it's heavily armored and also equipped with a fairly substantial anti-air battery. 

As usual, some miscellaneous weight would apply to command facilities, night-fighting, and so forth.

Big Boi, Enter ship name, Enter country Enter ship type laid down 1926

Displacement:
   14,379 t light; 15,114 t standard; 16,362 t normal; 17,361 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (437.27 ft / 426.51 ft) x 101.71 ft (Bulges 108.27 ft) x (19.69 / 20.76 ft)
   (133.28 m / 130.00 m) x 31.00 m (Bulges 33.00 m)  x (6.00 / 6.33 m)

Armament:
      2 - 17.72" / 450 mm 45.0 cal guns - 2,976.24lbs / 1,350.00kg shells, 90 per gun
     Breech loading guns in turret on barbette mount, 1926 Model
     1 x 2-gun mount on centreline, forward deck forward
      8 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 250 per gun
     Quick firing guns in deck and hoist mounts, 1926 Model
     2 x 2-gun mounts on centreline, aft deck aft
      1 raised mount - superfiring
     2 x 2-gun mounts on sides, aft deck forward
      6 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 300 per gun
     Anti-air guns in deck mounts, 1926 Model
     4 x Single mounts on sides, aft deck forward
      4 raised mounts - superfiring
     2 x Single mounts on sides, forward deck aft
      16 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1926 Model
     2 x Twin mounts on sides, aft evenly spread
      2 raised mounts
     6 x Twin mounts on sides amidships
      6 double raised mounts
      Weight of broadside 6,680 lbs / 3,030 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7.87" / 200 mm   278.87 ft / 85.00 m   16.37 ft / 4.99 m
   Ends:   1.97" / 50 mm   147.64 ft / 45.00 m   11.81 ft / 3.60 m
     Main Belt covers 101 % of normal length

   - Torpedo Bulkhead:
      1.97" / 50 mm   255.91 ft / 78.00 m   14.96 ft / 4.56 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.7" / 400 mm   7.87" / 200 mm      15.7" / 400 mm
   2nd:   1.97" / 50 mm   1.18" / 30 mm      1.97" / 50 mm
   3rd:   0.79" / 20 mm   0.79" / 20 mm            -
   4th:   0.59" / 15 mm   0.12" / 3 mm            -

   - Armoured deck - single deck: 3.94" / 100 mm For and Aft decks
   Forecastle: 3.94" / 100 mm  Quarter deck: 3.94" / 100 mm

   - Conning towers: Forward 7.87" / 200 mm,  Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 2 shafts, 13,404 shp / 10,000 Kw = 17.12 kts
   Range 16,400nm at 10.00 kts
   Bunker at max displacement = 2,247 tons

Complement:
   723 - 940

Cost:
   £3.962 million / $15.850 million

Distribution of weights at normal displacement:
   Armament: 1,242 tons, 7.6 %
   Armour: 5,730 tons, 35.0 %
      - Belts: 1,825 tons, 11.2 %
      - Torpedo bulkhead: 279 tons, 1.7 %
      - Armament: 1,123 tons, 6.9 %
      - Armour Deck: 2,394 tons, 14.6 %
      - Conning Tower: 109 tons, 0.7 %
   Machinery: 429 tons, 2.6 %
   Hull, fittings & equipment: 6,428 tons, 39.3 %
   Fuel, ammunition & stores: 1,983 tons, 12.1 %
   Miscellaneous weights: 549 tons, 3.4 %
      - Hull below water: 107 tons
      - Hull above water: 130 tons
      - On freeboard deck: 72 tons
      - Above deck: 240 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     50,609 lbs / 22,956 Kg = 18.2 x 17.7 " / 450 mm shells or 12.0 torpedoes
   Stability (Unstable if below 1.00): 1.60
   Metacentric height 11.3 ft / 3.4 m
   Roll period: 13.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.24
   Seaboat quality  (Average = 1.00): 1.95

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.630 / 0.634
   Length to Beam Ratio: 3.94 : 1
   'Natural speed' for length: 20.65 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 52
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 5.91 ft / 1.80 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   30.00 %,  27.56 ft / 8.40 m,  23.62 ft / 7.20 m
      - Forward deck:   30.00 %,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
      - Aft deck:   25.00 %,  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:      20.94 ft / 6.38 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 54.3 %
      - Above water (accommodation/working, high = better): 172.3 %
   Waterplane Area: 32,624 Square feet or 3,031 Square metres
   Displacement factor (Displacement / loading): 129 %
   Structure weight / hull surface area: 166 lbs/sq ft or 813 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.88
      - Longitudinal: 2.94
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

BW:  Electric drive
AW:  Torpedo nets
FD:  Mostly weight reserve and command facilities
AD:  FC, nightfighting, L/R wireless, command facilities

[The Rock Doctor]

A shallow-draft gunboat designed explicitly to carry a platoon's worth of 150mm howitzers for shore bombardment purposes *and* the spotting top to direct the fire.

The vessel would be able to work inshore on oceans, in the big lake in the canal zone, and a fair ways up some of the major river systems in Union territory. 

Although shown with the howitzers stowed forward/aft, actual fire missions would normally occur with the guns firing on a broadside; little to no end-on fire is anticipated here.  Fixed ammunition lockers supply a quantity of ready shells to the battery, the rest being below decks.

The ship is armored and armed for basic defense against air and shore battery attack.  While an earlier version embarked torpedo nets, I'm not really sure it's a major hazard for something with such a shallow draft, especially if it works on rivers a fair bit.

Consideration was given to a layout that had the superstructure well aft and all four howitzers in line amidships, but that seemed a bit vulnerable to mission kills from a single hit or malfunction.  Plus the spotting top seems better placed amidships.

Enter ship name, Enter country Enter ship type laid down 1925

Displacement:
   898 t light; 974 t standard; 1,017 t normal; 1,051 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (255.81 ft / 249.34 ft) x 39.37 ft x (5.58 / 5.74 ft)
   (77.97 m / 76.00 m) x 12.00 m  x (1.70 / 1.75 m)

Armament:
      1 - 1.97" / 50.0 mm 45.0 cal gun - 3.85lbs / 1.75kg shells, 250 per gun
     Quick firing gun in deck mount, 1925 Model
     1 x Single mount on centreline, forward deck forward
      1 raised mount
      2 - 1.97" / 50.0 mm 45.0 cal guns - 3.85lbs / 1.75kg shells, 250 per gun
     Anti-air guns in deck mounts, 1925 Model
     2 x Single mounts on sides, aft deck forward
      8 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1925 Model
     4 x Twin mounts on sides, evenly spread
      4 raised mounts
      4 - 5.91" / 150 mm 25.0 cal guns - 93.53lbs / 42.42kg shells, 250 per gun
     Breech loading guns in deck mounts, 1925 Model
     4 x Single mounts on centreline ends, evenly spread
      Weight of broadside 387 lbs / 175 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   0.98" / 25 mm   162.40 ft / 49.50 m   11.81 ft / 3.60 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length

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

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

   - Conning towers: Forward 0.98" / 25 mm,  Aft 0.00" / 0 mm

Machinery:
   Diesel Internal combustion generators,
   Electric motors, 2 shafts, 2,010 shp / 1,500 Kw = 15.57 kts
   Range 2,500nm at 10.00 kts
   Bunker at max displacement = 76 tons

Complement:
   89 - 117

Cost:
   £0.168 million / $0.673 million

Distribution of weights at normal displacement:
   Armament: 34 tons, 3.4 %
   Armour: 255 tons, 25.1 %
      - Belts: 83 tons, 8.2 %
      - Armament: 32 tons, 3.2 %
      - Armour Deck: 138 tons, 13.6 %
      - Conning Tower: 2 tons, 0.2 %
   Machinery: 65 tons, 6.4 %
   Hull, fittings & equipment: 329 tons, 32.4 %
   Fuel, ammunition & stores: 119 tons, 11.7 %
   Miscellaneous weights: 214 tons, 21.0 %
      - Hull below water: 36 tons
      - On freeboard deck: 58 tons
      - Above deck: 120 tons

Fittings:
-36 t:  Diesel/electric drive (BW)
-4 t:  Type 1918 fire control (AD)
-25 t:  L/R wireless (AD)
-10 t:  Extra S/R wireless (AD)
-10 t:  Night-fighting doodads (AD)
-25 t:  Command facilities (AD)
-25 t:  Cage mast and spotting top (AD)
-79 t:  Weight reserve (mostly FD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3,346 lbs / 1,518 Kg = 877.3 x 2.0 " / 50 mm shells or 2.0 torpedoes
   Stability (Unstable if below 1.00): 1.30
   Metacentric height 2.0 ft / 0.6 m
   Roll period: 11.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.25
   Seaboat quality  (Average = 1.00): 1.58

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.650 / 0.653
   Length to Beam Ratio: 6.33 : 1
   'Natural speed' for length: 15.79 kts
   Power going to wave formation at top speed: 44 %
   Trim (Max stability = 0, Max steadiness = 100): 64
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 3.28 ft / 1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   15.00 %,  18.04 ft / 5.50 m,  18.04 ft / 5.50 m
      - Forward deck:   45.00 %,  10.17 ft / 3.10 m,  10.17 ft / 3.10 m
      - Aft deck:   25.00 %,  10.17 ft / 3.10 m,  10.17 ft / 3.10 m
      - Quarter deck:   15.00 %,  10.17 ft / 3.10 m,  10.17 ft / 3.10 m
      - Average freeboard:      11.35 ft / 3.46 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 40.9 %
      - Above water (accommodation/working, high = better): 163.7 %
   Waterplane Area: 7,520 Square feet or 699 Square metres
   Displacement factor (Displacement / loading): 145 %
   Structure weight / hull surface area: 36 lbs/sq ft or 175 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.70
      - Longitudinal: 1.33
      - Overall: 0.75
   Caution: Hull subject to strain in open-sea
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[The Rock Doctor]

The 1926 monitor as I'm going to build it.

Between adjusted freeboard/depth and the superfiring turret, there's now six deck levels to accommodate the turret overall and that seemed to be the necessary minimum from my readings.

The superstructure reflects a slightly compact version of the new form being introduced on the G-class battleships.  This includes some space for classroom facilities to allow the ship to double as a gunnery training platform if not being used to test the main gun or operate as a station flagship.

Enter ship name, Enter country Enter ship type laid down 1926

Displacement:
   8,819 t light; 9,232 t standard; 10,149 t normal; 10,883 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (402.50 ft / 393.70 ft) x 85.30 ft x (17.06 / 18.09 ft)
   (122.68 m / 120.00 m) x 26.00 m  x (5.20 / 5.51 m)

Armament:
      1 - 17.72" / 450 mm 45.0 cal gun - 2,976.24lbs / 1,350.00kg shells, 90 per gun
     Breech loading gun in turret on barbette mount, 1926 Model
     1 x Single mount on centreline, forward deck centre
      1 raised mount
      4 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 250 per gun
     Quick firing guns in deck and hoist mounts, 1926 Model
     2 x 2-gun mounts on centreline, aft deck aft
      1 raised mount - superfiring
      4 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 300 per gun
     Anti-air guns in deck mounts, 1926 Model
     4 x Single mounts on sides, aft deck forward
      12 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1926 Model
     6 x Twin mounts on sides, evenly spread
      6 raised mounts
      Weight of broadside 3,371 lbs / 1,529 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.94" / 100 mm   255.91 ft / 78.00 m   16.37 ft / 4.99 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead:
      1.57" / 40 mm   255.91 ft / 78.00 m   16.21 ft / 4.94 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.8" / 300 mm   5.12" / 130 mm      7.87" / 200 mm
   2nd:   1.97" / 50 mm   1.18" / 30 mm      1.97" / 50 mm
   3rd:   0.79" / 20 mm   0.79" / 20 mm            -
   4th:   0.59" / 15 mm   0.12" / 3 mm            -

   - Armoured deck - single deck: 2.56" / 65 mm For and Aft decks
   Forecastle: 1.97" / 50 mm  Quarter deck: 2.56" / 65 mm

   - Conning towers: Forward 3.94" / 100 mm,  Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 2 shafts, 10,724 shp / 8,000 Kw = 17.46 kts
   Range 16,400nm at 10.00 kts
   Bunker at max displacement = 1,652 tons

Complement:
   505 - 657

Cost:
   £2.246 million / $8.985 million

Distribution of weights at normal displacement:
   Armament: 627 tons, 6.2 %
   Armour: 2,711 tons, 26.7 %
      - Belts: 764 tons, 7.5 %
      - Torpedo bulkhead: 242 tons, 2.4 %
      - Armament: 516 tons, 5.1 %
      - Armour Deck: 1,150 tons, 11.3 %
      - Conning Tower: 40 tons, 0.4 %
   Machinery: 343 tons, 3.4 %
   Hull, fittings & equipment: 4,473 tons, 44.1 %
   Fuel, ammunition & stores: 1,331 tons, 13.1 %
   Miscellaneous weights: 664 tons, 6.5 %
      - Hull below water: 86 tons
      - Hull above water: 120 tons
      - On freeboard deck: 58 tons
      - Above deck: 400 tons

-86 t:  Electric motors (BW)
-120 t:  Torpedo nets (AW)
-63 t:  Fire control (AD)
-25 t:  Nightfighting doodads (AD)
-25 t:  L/R wireless (AD)
-10 t:  Second S/R wireless (AD)
-100 t:  Command facilities (AD)
-100 t:  Classroom facilities (AD)
-135 t:  Weight reserve (FD/AD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     32,792 lbs / 14,874 Kg = 11.8 x 17.7 " / 450 mm shells or 8.5 torpedoes
   Stability (Unstable if below 1.00): 1.30
   Metacentric height 6.3 ft / 1.9 m
   Roll period: 14.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.48
   Seaboat quality  (Average = 1.00): 1.71

Hull form characteristics:
   Hull has low forecastle, rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.620 / 0.627
   Length to Beam Ratio: 4.62 : 1
   'Natural speed' for length: 19.84 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 59
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 4.92 ft / 1.50 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   30.00 %,  21.98 ft / 6.70 m,  14.44 ft / 4.40 m
      - Forward deck:   30.00 %,  22.31 ft / 6.80 m,  22.31 ft / 6.80 m
      - Aft deck:   25.00 %,  14.44 ft / 4.40 m,  14.44 ft / 4.40 m
      - Quarter deck:   15.00 %,  14.44 ft / 4.40 m,  14.44 ft / 4.40 m
      - Average freeboard:      17.70 ft / 5.40 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 53.2 %
      - Above water (accommodation/working, high = better): 176.8 %
   Waterplane Area: 25,024 Square feet or 2,325 Square metres
   Displacement factor (Displacement / loading): 148 %
   Structure weight / hull surface area: 149 lbs/sq ft or 730 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.89
      - Longitudinal: 2.81
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[The Rock Doctor]

The first use I've got for a 2,500 t destroyer hull is to make a fast minelayer out of it.  This would complement two existing minelayer-cruisers and continue my trend of focusing on specialized offensive minelayers rather than having large quantities of light forces with limited capabilities.

In theory I could probably get 2x2 130mm M&H for a main battery, but eh.  The torpedoes are defensive stand-off weapons, something to make a pursuer think twice about pursuing.

Enter ship name, Enter country Enter ship type laid down 1927

Displacement:
   2,499 t light; 2,595 t standard; 3,034 t normal; 3,385 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (432.90 ft / 414.70 ft) x 38.71 ft x (15.75 / 16.98 ft)
   (131.95 m / 126.40 m) x 11.80 m  x (4.80 / 5.17 m)

Armament:
      6 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 300 per gun
     Quick firing guns in deck mounts, 1927 Model
     1 x 2-gun mount on centreline, forward deck centre
      1 raised mount
     2 x 2-gun mounts on centreline, aft evenly spread
      1 raised mount
      4 - 1.97" / 50.0 mm 45.0 cal guns - 3.85lbs / 1.75kg shells, 300 per gun
     Anti-air guns in deck mounts, 1927 Model
     4 x Single mounts on sides, evenly spread
      8 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1927 Model
     4 x Twin mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 201 lbs / 91 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm   0.79" / 20 mm            -
   3rd:   0.79" / 20 mm   0.12" / 3 mm            -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 51,609 shp / 38,500 Kw = 33.09 kts
   Range 16,400nm at 10.00 kts
   Bunker at max displacement = 790 tons

Complement:
   203 - 265

Cost:
   £1.129 million / $4.516 million

Distribution of weights at normal displacement:
   Armament: 37 tons, 1.2 %
   Armour: 20 tons, 0.7 %
      - Armament: 20 tons, 0.7 %
   Machinery: 1,520 tons, 50.1 %
   Hull, fittings & equipment: 678 tons, 22.3 %
   Fuel, ammunition & stores: 535 tons, 17.6 %
   Miscellaneous weights: 244 tons, 8.0 %
      - Hull above water: 140 tons
      - On freeboard deck: 34 tons
      - Above deck: 70 tons

Fittings:
-4 t:  Fire control (AD)
-25 t:  Night-fighting doodads (AD)
-25 t:  L/R wireless (AD)
-18 t:  2x3 - 530mm torpedo carriages, no reloads (FD)
-32 t:  Weight reserve (AD/FD)
-140 t:  Mines, man (AW)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     815 lbs / 370 Kg = 26.7 x 3.9 " / 100 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.30
   Metacentric height 1.9 ft / 0.6 m
   Roll period: 11.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.13
   Seaboat quality  (Average = 1.00): 1.24

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.420 / 0.435
   Length to Beam Ratio: 10.71 : 1
   'Natural speed' for length: 20.36 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 9.84 ft / 3.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  22.97 ft / 7.00 m,  15.75 ft / 4.80 m
      - Forward deck:   30.00 %,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Aft deck:   35.00 %,  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:      16.33 ft / 4.98 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 170.9 %
      - Above water (accommodation/working, high = better): 147.9 %
   Waterplane Area: 10,009 Square feet or 930 Square metres
   Displacement factor (Displacement / loading): 84 %
   Structure weight / hull surface area: 35 lbs/sq ft or 171 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.49
      - Overall: 0.55
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

1080 nm @ 30 kts
1800 nm @ 25 kts (half-power)
3300 nm @ 20 kts
6800 nm @ 15 kts

[The Rock Doctor]

The unholy offspring of an armored cruiser and a light aircraft carrier.  This is more fooling around/seeing what can be done with flight deck cruisers than a concrete proposal to build it.

The bow is rather high, so the main battery won't be firing straight ahead at short ranges, and the overall firing arc for the second turret is not awesome.  Lighter batteries are aft, although I might look at parking some stuff around the island.

I won't work out the precise miscellaneous weight but the important thing is it could take 19 or 16 aircraft, depending on the vintage.  Hanger length is comparable to the Wrona class carrier (18/15 aircraft) and the deck a bit shorter, but both hanger and flight deck would be a few metres wider.  The carrier is shown for comparison purposes.

Hypothetically, I could reconstruct it to a full carrier by yanking out the main battery and adding hanger/flight deck.  Depending on whether it was considered a conversion or not, it could maybe add another 10-15 aircraft that way.  Which is honestly not spectacular for a hull that big.


Enter ship name, Enter country Enter ship type laid down 1927

Displacement:
   22,664 t light; 23,737 t standard; 25,767 t normal; 27,391 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (763.56 ft / 744.75 ft) x 82.02 ft x (29.53 / 30.92 ft)
   (232.73 m / 227.00 m) x 25.00 m  x (9.00 / 9.43 m)

Armament:
      6 - 11.81" / 300 mm 45.0 cal guns - 830.84lbs / 376.86kg shells, 150 per gun
     Breech loading guns in turret on barbette mounts, 1927 Model
     2 x 3-gun mounts on centreline, forward evenly spread
      12 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 250 per gun
     Quick firing guns in deck and hoist mounts, 1927 Model
     6 x 2-gun mounts on sides, aft evenly spread
      6 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 250 per gun
     Anti-air guns in deck mounts, 1927 Model
     6 x Single mounts on sides, aft evenly spread
      6 raised mounts
      16 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1927 Model
     8 x Twin mounts on sides, evenly spread
      8 raised mounts
      Weight of broadside 5,983 lbs / 2,714 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5.91" / 150 mm   505.25 ft / 154.00 m   16.37 ft / 4.99 m
   Ends:   Unarmoured
     Main Belt covers 104 % of normal length

   - Torpedo Bulkhead:
      1.57" / 40 mm   505.25 ft / 154.00 m   25.98 ft / 7.92 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.8" / 300 mm   2.95" / 75 mm      7.87" / 200 mm
   2nd:   1.97" / 50 mm   1.18" / 30 mm      1.97" / 50 mm
   3rd:   0.79" / 20 mm   0.59" / 15 mm            -
   4th:   0.59" / 15 mm         -               -

   - Armoured deck - multiple decks: 2.95" / 75 mm For and Aft decks
   Forecastle: 1.97" / 50 mm  Quarter deck: 2.95" / 75 mm

   - Conning towers: Forward 5.91" / 150 mm,  Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 127,346 shp / 95,000 Kw = 31.24 kts
   Range 20,000nm at 10.00 kts
   Bunker at max displacement = 3,654 tons

Complement:
   1,016 - 1,321

Cost:
   £6.939 million / $27.757 million

Distribution of weights at normal displacement:
   Armament: 1,348 tons, 5.2 %
   Armour: 5,791 tons, 22.5 %
      - Belts: 2,008 tons, 7.8 %
      - Torpedo bulkhead: 765 tons, 3.0 %
      - Armament: 732 tons, 2.8 %
      - Armour Deck: 2,174 tons, 8.4 %
      - Conning Tower: 111 tons, 0.4 %
   Machinery: 4,020 tons, 15.6 %
   Hull, fittings & equipment: 9,495 tons, 36.8 %
   Fuel, ammunition & stores: 3,103 tons, 12.0 %
   Miscellaneous weights: 2,010 tons, 7.8 %
      - Hull below water: 800 tons
      - Hull above water: 800 tons
      - On freeboard deck: 110 tons
      - Above deck: 300 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     42,016 lbs / 19,058 Kg = 51.0 x 11.8 " / 300 mm shells or 5.3 torpedoes
   Stability (Unstable if below 1.00): 1.21
   Metacentric height 5.3 ft / 1.6 m
   Roll period: 15.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 60 %
         - Recoil effect (Restricted arc if above 1.00): 0.59
   Seaboat quality  (Average = 1.00): 1.82

Hull form characteristics:
   Hull has rise aft of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.508
   Length to Beam Ratio: 9.08 : 1
   'Natural speed' for length: 27.29 kts
   Power going to wave formation at top speed: 51 %
   Trim (Max stability = 0, Max steadiness = 100): 33
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 7.87 ft / 2.40 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  30.05 ft / 9.16 m,  19.69 ft / 6.00 m
      - Forward deck:   30.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Aft deck:   35.00 %,  37.73 ft / 11.50 m,  37.73 ft / 11.50 m
      - Quarter deck:   15.00 %,  37.73 ft / 11.50 m,  37.73 ft / 11.50 m
      - Average freeboard:      29.54 ft / 9.00 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 103.4 %
      - Above water (accommodation/working, high = better): 224.3 %
   Waterplane Area: 40,700 Square feet or 3,781 Square metres
   Displacement factor (Displacement / loading): 122 %
   Structure weight / hull surface area: 146 lbs/sq ft or 713 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 2.10
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather