Vilnius Union Ships, 1920+: Electric Drive Boogaloo

[TacCovert4]

So I've gone with the guns forward and you've gone with flight deck forward. 

Interesting concept.   I wonder how much air group you'd lose to get 8 x 150mm guns. 

[Jefgte]

1T4x150 aft...

Is it to escape at 32kts ?

[The Rock Doctor]

So I've gone with the guns forward and you've gone with flight deck forward. 

Interesting concept.   I wonder how much air group you'd lose to get 8 x 150mm guns.

This is "carrier > cruiser" so guns aft.

The additional gun probably costs four planes if at the same deck level as the first one. 

[The Rock Doctor]

1T4x150 aft...

Is it to escape at 32kts ?

Absolutely.

[TacCovert4]

I just worry that a single 150mm turret is all your eggs in one basket. And also the bare minimum to get a working shot ladder.   I'm a bit ambivalent on if it would be enough to seriously force an 8000t light cruiser to disengage. Honestly I worry a cruiser 6000t or under might still feel comfortable giving it a go.  I'd want enough firepower to discourage a cruiser in that 3000 to 6000 ton bracket,  maybe even fend off an 8000 tonner.  Obviously the big cruisers will have at her, but that's not avoidable.

[The Rock Doctor]

At Wesworld I did a variation with superfiring triples aft, but we didn't have the same aircraft weight rules or freeboard requirements (any requirements, in fact).  The freeboard penalty for a superfiring turret is crippling with our rule set.

I reckon the armament's equal to a pursuing CL's forward battery, which would have to be good enough, and certainly enough to take on a destroyer.  Something with the full armament of a CL is either not operating a lot of planes or is a lot bigger than the CL itself.

[The Rock Doctor]

"I need a 32 knot carrier in eighteen months"

Alright, well, no protection, not much of an anti-surface battery, but you do get sixteen planes on the thing.

Enter ship name, Enter country Enter ship type laid down 1931

Displacement:
   8,951 t light; 9,257 t standard; 10,227 t normal; 11,004 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (571.77 ft / 554.46 ft) x 68.90 ft x (18.37 / 19.43 ft)
   (174.28 m / 169.00 m) x 21.00 m  x (5.60 / 5.92 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, 1931 Model
     4 x Single mounts on centreline ends, evenly spread
      16 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,000 per gun
     Anti-air guns in deck mounts, 1931 Model
     8 x Twin mounts on sides, evenly spread
      12 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1931 Model
     6 x Twin mounts on sides, evenly spread
      Weight of broadside 339 lbs / 154 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:   0.79" / 20 mm   0.59" / 15 mm            -
   3rd:   0.59" / 15 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 92,493 shp / 69,000 Kw = 32.05 kts
   Range 18,000nm at 10.00 kts
   Bunker at max displacement = 1,747 tons

Complement:
   508 - 661

Cost:
   £3.193 million / $12.774 million

Distribution of weights at normal displacement:
   Armament: 95 tons, 0.9 %
   Armour: 67 tons, 0.7 %
      - Armament: 67 tons, 0.7 %
   Machinery: 2,766 tons, 27.0 %
   Hull, fittings & equipment: 4,280 tons, 41.8 %
   Fuel, ammunition & stores: 1,276 tons, 12.5 %
   Miscellaneous weights: 1,743 tons, 17.0 %
      - Hull below water: 760 tons
      - Hull above water: 760 tons
      - On freeboard deck: 73 tons
      - Above deck: 150 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     15,700 lbs / 7,121 Kg = 234.2 x 5.1 " / 130 mm shells or 1.7 torpedoes
   Stability (Unstable if below 1.00): 1.32
   Metacentric height 4.7 ft / 1.4 m
   Roll period: 13.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.07
   Seaboat quality  (Average = 1.00): 1.79

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.510 / 0.519
   Length to Beam Ratio: 8.05 : 1
   'Natural speed' for length: 23.55 kts
   Power going to wave formation at top speed: 61 %
   Trim (Max stability = 0, Max steadiness = 100): 39
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 6.56 ft / 2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 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:      29.53 ft / 9.00 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 107.8 %
      - Above water (accommodation/working, high = better): 284.4 %
   Waterplane Area: 25,686 Square feet or 2,386 Square metres
   Displacement factor (Displacement / loading): 134 %
   Structure weight / hull surface area: 93 lbs/sq ft or 454 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.86
      - Longitudinal: 3.67
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   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 Pripyat class light cruisers' primary change from the preceding Oyono class is a new 150mm/50 cal main battery, though additional light AA is also fitted.  Or will be before she's done, at any rate.

Enter ship name, Enter country Enter ship type laid down 1929

Displacement:
   8,350 t light; 8,749 t standard; 9,638 t normal; 10,350 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (595.30 ft / 580.71 ft) x 58.73 ft x (21.98 / 23.13 ft)
   (181.45 m / 177.00 m) x 17.90 m  x (6.70 / 7.05 m)

Armament:
      8 - 5.91" / 150 mm 50.0 cal guns - 121.25lbs / 55.00kg shells, 250 per gun
     Breech loading guns in turret on barbette mounts, 1929 Model
     4 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      6 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 400 per gun
     Anti-air guns in deck mounts, 1929 Model
     6 x Single mounts on side ends, evenly spread
      12 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,000 per gun
     Anti-air guns in deck mounts, 1929 Model
     6 x Twin mounts on sides, evenly spread
      8 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1929 Model
     4 x Twin mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 1,206 lbs / 547 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.94" / 100 mm   377.46 ft / 115.05 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:   5.91" / 150 mm   1.57" / 40 mm      3.94" / 100 mm
   2nd:   0.79" / 20 mm   0.59" / 15 mm            -
   3rd:   0.59" / 15 mm         -               -
   4th:   0.59" / 15 mm         -               -

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

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 81,769 shp / 61,000 Kw = 32.04 kts
   Range 16,400nm at 10.00 kts
   Bunker at max displacement = 1,601 tons

Complement:
   486 - 632

Cost:
   £2.994 million / $11.976 million

Distribution of weights at normal displacement:
   Armament: 324 tons, 3.4 %
   Armour: 1,952 tons, 20.2 %
      - Belts: 996 tons, 10.3 %
      - Armament: 278 tons, 2.9 %
      - Armour Deck: 639 tons, 6.6 %
      - Conning Tower: 38 tons, 0.4 %
   Machinery: 2,511 tons, 26.1 %
   Hull, fittings & equipment: 3,305 tons, 34.3 %
   Fuel, ammunition & stores: 1,289 tons, 13.4 %
   Miscellaneous weights: 258 tons, 2.7 %
      - On freeboard deck: 108 tons
      - Above deck: 150 tons

Fittings:
-32 t:  1918 Fire Control (AD) (might be updated before she's done)
-25 t:  L/R wireless (AD)
-25 t:  Night-fighting doodads (AD)
-50 t:  Command facilities (AD)
-55 t:  2 armed floatplanes and one catapult with hangers aside aft funnel (FD)
-32 t:  2x4 530mm torpedo carriages (no reloads) (FD)
-18 t + 21 t:  Weight reserve (AD/FD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     11,047 lbs / 5,011 Kg = 107.3 x 5.9 " / 150 mm shells or 1.6 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 2.7 ft / 0.8 m
   Roll period: 15.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 60 %
         - Recoil effect (Restricted arc if above 1.00): 0.34
   Seaboat quality  (Average = 1.00): 1.07

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.450 / 0.459
   Length to Beam Ratio: 9.89 : 1
   'Natural speed' for length: 24.10 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   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 %,  26.57 ft / 8.10 m,  21.65 ft / 6.60 m
      - Forward deck:   30.00 %,  21.65 ft / 6.60 m,  21.65 ft / 6.60 m
      - Aft deck:   35.00 %,  13.78 ft / 4.20 m,  13.78 ft / 4.20 m
      - Quarter deck:   15.00 %,  13.78 ft / 4.20 m,  13.78 ft / 4.20 m
      - Average freeboard:      18.11 ft / 5.52 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 96.4 %
      - Above water (accommodation/working, high = better): 148.5 %
   Waterplane Area: 21,753 Square feet or 2,021 Square metres
   Displacement factor (Displacement / loading): 117 %
   Structure weight / hull surface area: 98 lbs/sq ft or 480 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.34
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent

960nm @ 32 kts
1170nm @ 30 kts
1960nm @ 25 kts
3510nm @ 20 kts
6930nm @ 15 kts

[The Rock Doctor]

A small icebreaker that would replace the 1899 vintage Sjalland class, because it's about time.

The hull dimensions are quite chonky but appear to reflect historical practice, even the L:B ratio.

The armament is minimal and reflects the expectation that she'll never leave the Baltic, which is a Union Lake in theory.  Some fittings allow for limited rescue and salvage work if somebody else is in trouble.

The hull protection pushes this out of mercantile territory and into milspec but what can you do.

The machinery is diesel-electric, which historically became preferred as WW2 came around.  Should mean it's responsive in icy waters.  There are the two main props aft, which allows for 15.4 knots on 1,500 kw.  The forward prop is 500 kw for 11.8 knots, but it turns out the primary purpose of that engine is not ship propulsion.  Rather, it's supposed to pull fresh-broken ice from under the bow and send it aft, and in doing so create a pull that weakens the unbroken ice directly ahead of what broke.  Or this is what I read, anyway.

Places where I'd normally sketch...uh...railings...are instead solid gunwales, since people want to move around and man their stations without getting soaked by cold seawater splooshing around.

Enter ship name, Enter country Enter ship type laid down 1929

Displacement:
   748 t light; 767 t standard; 807 t normal; 839 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (139.16 ft / 131.23 ft) x 32.81 ft x (13.12 / 13.51 ft)
   (42.42 m / 40.00 m) x 10.00 m  x (4.00 / 4.12 m)

Armament:
      1 - 2.95" / 75.0 mm 45.0 cal gun - 12.98lbs / 5.89kg shells, 250 per gun
     Quick firing gun in deck mount, 1929 Model
     1 x Single mount on centreline, forward deck centre
      4 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1929 Model
     2 x Single mounts on sides, forward deck aft
      2 raised mounts
     1 x Twin mount on centreline, aft deck centre
      1 raised mount
      Weight of broadside 13 lbs / 6 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   0.79" / 20 mm     85.30 ft / 26.00 m   5.91 ft / 1.80 m
   Ends:   1.57" / 40 mm     45.90 ft / 13.99 m   5.91 ft / 1.80 m
     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            -
   3rd:   0.59" / 15 mm         -               -

Machinery:
   Diesel Internal combustion generators,
   Electric motors, 3 shafts, 2,681 shp / 2,000 Kw = 16.42 kts
   Range 3,000nm at 10.00 kts
   Bunker at max displacement = 72 tons

Complement:
   75 - 98

Cost:
   £0.154 million / $0.617 million

Distribution of weights at normal displacement:
   Armament: 3 tons, 0.4 %
   Armour: 41 tons, 5.0 %
      - Belts: 34 tons, 4.3 %
      - Armament: 6 tons, 0.8 %
   Machinery: 82 tons, 10.2 %
   Hull, fittings & equipment: 262 tons, 32.5 %
   Fuel, ammunition & stores: 59 tons, 7.3 %
   Miscellaneous weights: 360 tons, 44.6 %
      - Hull below water: 110 tons
      - Hull above water: 100 tons
      - On freeboard deck: 50 tons
      - Above deck: 100 tons

Fittings:
-45 t:  D-E machinery (BW)
-20 t:  Hull bracing (BW)
-45 t:  40 t water ballast and pumps to move it between tanks (BW)
-100 t:  Crew amenities and extra accommodation space for survivors (AW)
-50 t:  Towing rig (FD)
-25 t:  L/R wireless (AD)
-10 t:  Nightfighting doodads (AD)
-25 t:  Huelsmeyer Device (AD)
-40 t:  Weight reserve (AD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1,597 lbs / 724 Kg = 124.1 x 3.0 " / 75 mm shells or 0.9 torpedoes
   Stability (Unstable if below 1.00): 1.14
   Metacentric height 1.2 ft / 0.4 m
   Roll period: 12.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 60 %
         - Recoil effect (Restricted arc if above 1.00): 0.02
   Seaboat quality  (Average = 1.00): 1.30

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.505
   Length to Beam Ratio: 4.00 : 1
   'Natural speed' for length: 11.46 kts
   Power going to wave formation at top speed: 72 %
   Trim (Max stability = 0, Max steadiness = 100): 46
   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 %,  17.06 ft / 5.20 m,  14.11 ft / 4.30 m
      - Forward deck:   30.00 %,  14.11 ft / 4.30 m,  13.12 ft / 4.00 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:      13.70 ft / 4.18 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 63.6 %
      - Above water (accommodation/working, high = better): 97.3 %
   Waterplane Area: 2,869 Square feet or 267 Square metres
   Displacement factor (Displacement / loading): 141 %
   Structure weight / hull surface area: 47 lbs/sq ft or 232 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 13.93
      - Overall: 1.21
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is adequate
   Good seaboat, rides out heavy weather easily

45 BW for machinery + 20 structural reinforcement + 45 ballast and pumps
11.8 knots on forward 500 kw shaft, 15.4 knots on two main shafts (1500kw)

[TacCovert4]

Seems useful for light ice.  Reminds me that I need to build another penguin class ice capability cruiser.

[The Rock Doctor]

Was doing a bit of goofing around to see what would happen if I suddenly had to comply with Washington Treaty-style limitations.

Didn't work out too well. Can't get my desired speed and armor and eight 400mm guns on 35,000 standard - even with a 3-2-3 main battery.

[The Rock Doctor]

Okay, this isn't bad, though.

Enter ship name, Enter country Enter ship type laid down 1930

Displacement:
   32,998 t light; 34,928 t standard; 37,339 t normal; 39,268 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (706.29 ft / 688.98 ft) x 108.27 ft x (29.20 / 30.44 ft)
   (215.28 m / 210.00 m) x 33.00 m  x (8.90 / 9.28 m)

Armament:
      8 - 15.75" / 400 mm 45.0 cal guns - 1,984.16lbs / 900.00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1930 Model
     2 x 3-gun mounts on centreline ends, evenly spread
     1 x 2-gun mount on centreline, aft deck centre
      1 raised mount
      16 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 400 per gun
     Dual purpose guns in deck and hoist mounts, 1930 Model
     8 x 2-gun mounts on side ends, evenly spread
      16 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1930 Model
     8 x Twin mounts on sides, forward deck aft
      8 raised mounts
      16 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1930 Model
     6 x Twin mounts on sides, evenly spread
      6 raised mounts
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 17,024 lbs / 7,722 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.8" / 350 mm   447.83 ft / 136.50 m   16.37 ft / 4.99 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead:
      1.97" / 50 mm   447.83 ft / 136.50 m   27.53 ft / 8.39 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.7" / 400 mm   7.87" / 200 mm      15.0" / 380 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: 5.12" / 130 mm For and Aft decks
   Forecastle: 3.94" / 100 mm  Quarter deck: 5.12" / 130 mm

   - Conning towers: Forward 14.96" / 380 mm,  Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 75,067 shp / 56,000 Kw = 25.01 kts
   Range 20,000nm at 10.00 kts
   Bunker at max displacement = 4,339 tons

Complement:
   1,342 - 1,745

Cost:
   £12.757 million / $51.029 million

Distribution of weights at normal displacement:
   Armament: 3,463 tons, 9.3 %
   Armour: 13,649 tons, 36.6 %
      - Belts: 4,420 tons, 11.8 %
      - Torpedo bulkhead: 898 tons, 2.4 %
      - Armament: 2,870 tons, 7.7 %
      - Armour Deck: 5,101 tons, 13.7 %
      - Conning Tower: 360 tons, 1.0 %
   Machinery: 2,275 tons, 6.1 %
   Hull, fittings & equipment: 12,888 tons, 34.5 %
   Fuel, ammunition & stores: 4,341 tons, 11.6 %
   Miscellaneous weights: 723 tons, 1.9 %
      - On freeboard deck: 173 tons
      - Above deck: 550 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     61,912 lbs / 28,083 Kg = 31.7 x 15.7 " / 400 mm shells or 11.2 torpedoes
   Stability (Unstable if below 1.00): 1.18
   Metacentric height 7.6 ft / 2.3 m
   Roll period: 16.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.54
   Seaboat quality  (Average = 1.00): 1.25

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.600 / 0.605
   Length to Beam Ratio: 6.36 : 1
   'Natural speed' for length: 26.25 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 6.56 ft / 2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  29.53 ft / 9.00 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:   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:      20.16 ft / 6.14 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 72.6 %
      - Above water (accommodation/working, high = better): 150.1 %
   Waterplane Area: 54,557 Square feet or 5,068 Square metres
   Displacement factor (Displacement / loading): 110 %
   Structure weight / hull surface area: 201 lbs/sq ft or 981 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.38
      - 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

13,800 nm @ 12 kts
8,400 nm @ 15 kts
4,200 nm @ 20 kts
1,700 nm @ 27 kts

[The Rock Doctor]

Was thinking about re-gunning the Wrogi class battleships, which are, admittedly getting long in the tooth. 4x3 300mm in triple mounts, at 445 t per turret.

My first thought was to replace them with 2-gun 350mm/45.  Nope, those would be 552 t each.

Okay, what about 4-gun 250mm/50.  Nope, that's a whopping 623 t.  In fact, even a 3-gun is too big at 467 t.

Well, what's the biggest 50 cal 2-gun mount I could do?  It turns out a 2-gun 305/50 is also 445 t.

So maybe I'll just leave the Wrogi class alone after all.

[The Rock Doctor]

Can't hardly move on account of being kicked by a horse two weeks ago, so Saturday night is for goofing around on the couch (with my leg elevated).

This would be using the flight-deck cruiser rules for a self-screening battleship.  The main battery isn't optimized for shooting flat ahead, but the 450mm shouldn't be shooting at point-blank ranges anyway.  A heavy secondary battery is present, though the two mounts behind the 450mm might not be popular or even inhabitable if the main battery is firing into the aft arc.

The airgroup is notionally 16 fighters and 4 scouts, with one or two catapults.  While the deck is not really long - about 445 feet - it is definitely really wide and should at least be useful for handling and spotting.  Chances are the hanger is slightly offset to starboard to make up for that honker of an island on the port side.

The hanger is 6.5 m high, rather than the minimum 5.5m for the rules - otherwise the clearance over the main battery turrets is kind of iffy.

At the moment I don't have an armored conning tower - putting right behind the main battery, under the flight deck, leaves it with no view.  Putting it on the island puts a lot of weight way up high on a side.  I might go for a lightly-protected one on the island if I play further.

Enter ship name, Enter country Enter ship type laid down 1931

Displacement:
   44,893 t light; 47,259 t standard; 49,921 t normal; 52,051 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (811.76 ft / 787.40 ft) x 114.83 ft x (31.17 / 32.27 ft)
   (247.43 m / 240.00 m) x 35.00 m  x (9.50 / 9.84 m)

Armament:
      6 - 17.72" / 450 mm 45.0 cal guns - 2,976.24lbs / 1,350.00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1931 Model
     2 x 3-gun mounts on centreline, forward evenly spread
      20 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 400 per gun
     Dual purpose guns in deck and hoist mounts, 1931 Model
     8 x 2-gun mounts on sides, aft evenly spread
     2 x 2-gun mounts on centreline, forward deck aft
      20 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1931 Model
     10 x Twin mounts on sides, evenly spread
      16 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1931 Model
     16 x Single mounts on sides, aft evenly spread
      Weight of broadside 19,295 lbs / 8,752 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.8" / 350 mm   511.81 ft / 156.00 m   16.37 ft / 4.99 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead:
      1.97" / 50 mm   511.81 ft / 156.00 m   28.61 ft / 8.72 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   17.7" / 450 mm   9.84" / 250 mm      15.7" / 400 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: 5.91" / 150 mm For and Aft decks
   Forecastle: 4.72" / 120 mm  Quarter deck: 5.91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 134,048 shp / 100,000 Kw = 28.04 kts
   Range 18,000nm at 10.00 kts
   Bunker at max displacement = 4,792 tons

Complement:
   1,669 - 2,170

Cost:
   £16.738 million / $66.951 million

Distribution of weights at normal displacement:
   Armament: 3,592 tons, 7.2 %
   Armour: 15,989 tons, 32.0 %
      - Belts: 5,005 tons, 10.0 %
      - Torpedo bulkhead: 1,066 tons, 2.1 %
      - Armament: 2,628 tons, 5.3 %
      - Armour Deck: 7,289 tons, 14.6 %
   Machinery: 4,009 tons, 8.0 %
   Hull, fittings & equipment: 18,490 tons, 37.0 %
   Fuel, ammunition & stores: 5,028 tons, 10.1 %
   Miscellaneous weights: 2,813 tons, 5.6 %
      - Hull below water: 950 tons
      - Hull above water: 950 tons
      - On freeboard deck: 313 tons
      - Above deck: 600 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     99,055 lbs / 44,931 Kg = 35.6 x 17.7 " / 450 mm shells or 15.1 torpedoes
   Stability (Unstable if below 1.00): 1.21
   Metacentric height 8.7 ft / 2.6 m
   Roll period: 16.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 90 %
         - Recoil effect (Restricted arc if above 1.00): 0.80
   Seaboat quality  (Average = 1.00): 1.73

Hull form characteristics:
   Hull has rise aft of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.620 / 0.624
   Length to Beam Ratio: 6.86 : 1
   'Natural speed' for length: 28.06 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 52
   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 %,  30.87 ft / 9.41 m,  19.69 ft / 6.00 m
      - Forward deck:   25.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Aft deck:   40.00 %,  41.01 ft / 12.50 m,  41.01 ft / 12.50 m
      - Quarter deck:   15.00 %,  41.01 ft / 12.50 m,  41.01 ft / 12.50 m
      - Average freeboard:      32.31 ft / 9.85 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 75.5 %
      - Above water (accommodation/working, high = better): 252.3 %
   Waterplane Area: 67,373 Square feet or 6,259 Square metres
   Displacement factor (Displacement / loading): 116 %
   Structure weight / hull surface area: 208 lbs/sq ft or 1,015 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 2.00
      - 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]

I'll probably continue playing with the concept for my amusement, but a bit of sketching suggests that I'd have some trouble fitting the forward 450mm turret into that hull with that beam.  So I might re-do with a higher BC or maybe 400/50 3-guns instead.