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

Started by The Rock Doctor, November 10, 2023, 06:52:08 PM

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The Rock Doctor

Alternate option for a guntub:  The 75mm and the centerline 15mm MG are swapped out for a lighter-weight 75mm mortar aft and a new-model 25mm AA gun forward.  A light belt protects the waterline against small-arms fire amidships.

Enter ship name, Enter country Enter ship type laid down 1933

Displacement:
   20 t light; 22 t standard; 23 t normal; 23 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (57.81 ft / 52.49 ft) x 13.12 ft x (2.46 / 2.49 ft)
   (17.62 m / 16.00 m) x 4.00 m  x (0.75 / 0.76 m)

Armament:
      1 - 2.95" / 75.0 mm 16.0 cal gun - 11.43lbs / 5.18kg shells, 150 per gun
     Muzzle loading gun in deck mount, 1933 Model
     1 x Single mount on centreline, aft deck centre
      1 - 0.98" / 25.0 mm 70.0 cal gun - 0.53lbs / 0.24kg shells, 1,000 per gun
     Anti-air gun in deck mount, 1933 Model
     1 x Single mount on centreline, forward deck forward
      2 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 2,000 per gun
     Machine guns in deck mounts, 1933 Model
     2 x Single mounts on sides amidships
      Weight of broadside 12 lbs / 6 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   0.59" / 15 mm     34.12 ft / 10.40 m   3.28 ft / 1.00 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   2nd:   0.59" / 15 mm         -               -

   - Conning towers: Forward 0.59" / 15 mm, Aft 0.00" / 0 mm

Machinery:
   Diesel Internal combustion motors,
   Geared drive, 2 shafts, 134 shp / 100 Kw = 12.22 kts
   Range 200nm at 10.00 kts
   Bunker at max displacement = 1 tons

Complement:
   4 - 6

Cost:
   £0.008 million / $0.031 million

Distribution of weights at normal displacement:
   Armament: 1 tons, 4.7 %
      - Guns: 1 tons, 4.7 %
   Armour: 4 tons, 16.8 %
      - Belts: 3 tons, 13.6 %
      - Armament: 1 tons, 2.7 %
      - Conning Tower: 0 tons, 0.4 %
   Machinery: 4 tons, 17.1 %
   Hull, fittings & equipment: 10 tons, 41.8 %
   Fuel, ammunition & stores: 2 tons, 10.8 %
   Miscellaneous weights: 2 tons, 8.8 %
      - Hull below water: 2 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     46 lbs / 21 Kg = 3.6 x 3.0 " / 75 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.25
   Metacentric height 0.4 ft / 0.1 m
   Roll period: 9.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.31
   Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.470 / 0.472
   Length to Beam Ratio: 4.00 : 1
   'Natural speed' for length: 7.25 kts
   Power going to wave formation at top speed: 74 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 1.97 ft / 0.60 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  9.19 ft / 2.80 m,  7.22 ft / 2.20 m
      - Forward deck:   20.00 %,  7.22 ft / 2.20 m,  5.25 ft / 1.60 m
      - Aft deck:   45.00 %,  5.25 ft / 1.60 m,  5.25 ft / 1.60 m
      - Quarter deck:   15.00 %,  5.25 ft / 1.60 m,  5.25 ft / 1.60 m
      - Average freeboard:      6.00 ft / 1.83 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 86.8 %
      - Above water (accommodation/working, high = better): 118.2 %
   Waterplane Area: 447 Square feet or 42 Square metres
   Displacement factor (Displacement / loading): 132 %
   Structure weight / hull surface area: 12 lbs/sq ft or 60 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.54
      - Longitudinal: 15.19
      - Overall: 0.76
   Caution: Hull subject to strain in open-sea
   Adequate machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform



The Rock Doctor

Still a few boring little refits to sim out before I can post the H1/33 sim report.

The R-23 class minesweepers get a new armament and updated fire control.  I reckon the existing FC was adequate for surface engagements, but the current model might be better from an AA perspective.

I reckon the ASW armament and sensor fit is adequate for something that focuses on mine warfare, so left that alone.

Costing at the bottom of the sim.


Enter ship name, Enter country Enter ship type laid down 1922

Displacement:
   342 t light; 360 t standard; 405 t normal; 441 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (163.52 ft / 156.82 ft) x 26.25 ft x (6.89 / 7.35 ft)
   (49.84 m / 47.80 m) x 8.00 m  x (2.10 / 2.24 m)

Armament:
      1 - 2.95" / 75.0 mm 45.0 cal gun - 12.99lbs / 5.89kg shells, 250 per gun
     Dual purpose gun in deck mount, 1922 Model
     1 x Single mount on centreline, forward deck centre
      2 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,500 per gun
     Anti-air guns in deck mount, 1922 Model
     1 x Twin mount on centreline, aft deck forward
      1 raised mount
      4 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,500 per gun
     Machine guns in deck mounts, 1922 Model
     2 x Twin mounts on sides, forward deck aft
      2 raised mounts
      Weight of broadside 22 lbs / 10 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm   0.12" / 3 mm            -
   2nd:   0.79" / 20 mm   0.12" / 3 mm            -
   3rd:   0.59" / 15 mm         -               -

Machinery:
   Coal and oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 1,609 shp / 1,200 Kw = 16.78 kts
   Range 4,000nm at 10.00 kts
   Bunker at max displacement = 82 tons (90% coal)

Complement:
   44 - 58

Cost:
   £0.059 million / $0.237 million

Distribution of weights at normal displacement:
   Armament: 5 tons, 1.3 %
      - Guns: 5 tons, 1.3 %
   Armour: 4 tons, 0.9 %
      - Armament: 4 tons, 0.9 %
   Machinery: 59 tons, 14.7 %
   Hull, fittings & equipment: 164 tons, 40.6 %
   Fuel, ammunition & stores: 63 tons, 15.6 %
   Miscellaneous weights: 109 tons, 26.9 %
      - Hull below water: 25 tons
      - On freeboard deck: 82 tons
      - Above deck: 2 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1,194 lbs / 542 Kg = 92.8 x 3.0 " / 75 mm shells or 0.9 torpedoes
   Stability (Unstable if below 1.00): 1.33
   Metacentric height 1.1 ft / 0.3 m
   Roll period: 10.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 51 %
         - Recoil effect (Restricted arc if above 1.00): 0.06
   Seaboat quality  (Average = 1.00): 1.97

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: 5.98 : 1
   'Natural speed' for length: 12.52 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 26
   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:   20.00 %,  19.36 ft / 5.90 m,  16.40 ft / 5.00 m
      - Forward deck:   20.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Aft deck:   45.00 %,  8.53 ft / 2.60 m,  8.53 ft / 2.60 m
      - Quarter deck:   15.00 %,  8.53 ft / 2.60 m,  8.53 ft / 2.60 m
      - Average freeboard:      11.92 ft / 3.63 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 61.1 %
      - Above water (accommodation/working, high = better): 130.0 %
   Waterplane Area: 2,742 Square feet or 255 Square metres
   Displacement factor (Displacement / loading): 165 %
   Structure weight / hull surface area: 32 lbs/sq ft or 157 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.82
      - Longitudinal: 7.58
      - Overall: 1.03
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

New armament + armor, and FC

Guns  0.010/0.005
Gun armor  0.004/0.004
FC 0.001/0.001
====
$0.015/0.010 BP

The Rock Doctor

#227
A refit of the Type 1923 river gunboats is much the same idea:  New 75mm DP guns, searchlight and new fire control but in this case, the single 50mm AA is being replaced by a twin 25/70 AA mounting. 

Cost would be $0.036 and 0.027 BP per unit, and there are six units in the class.


Enter ship name, Enter country Enter ship type laid down 1923

Displacement:
   172 t light; 184 t standard; 189 t normal; 192 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (148.98 ft / 144.36 ft) x 19.69 ft x (3.94 / 3.99 ft)
   (45.41 m / 44.00 m) x 6.00 m  x (1.20 / 1.22 m)

Armament:
      3 - 2.95" / 75.0 mm 45.0 cal guns - 12.98lbs / 5.89kg shells, 250 per gun
     Dual purpose guns in deck mounts, 1923 Model
     3 x Single mounts on centreline ends, majority forward
      1 raised mount - superfiring
      2 - 0.98" / 25.0 mm 70.0 cal guns - 0.53lbs / 0.24kg shells, 3,000 per gun
     Anti-air guns in deck mount, 1923 Model
     1 x Twin mount on centreline, aft deck forward
      1 raised mount
      4 - 0.59" / 15.0 mm 90.0 cal guns - 0.11lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1923 Model
     4 x Single mounts on sides, forward deck aft
      4 raised mounts
      Weight of broadside 40 lbs / 18 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1.57" / 40 mm     36.09 ft / 11.00 m   6.23 ft / 1.90 m
   Ends:   0.79" / 20 mm   108.23 ft / 32.99 m   3.94 ft / 1.20 m
     Main Belt covers 38 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.57" / 40 mm   0.79" / 20 mm            -
   3rd:   0.59" / 15 mm         -               -
   4th:   0.39" / 10 mm         -               -

   - Box over machinery & magazines:
   0.98" / 25 mm
   Forecastle: 0.00" / 0 mm  Quarter deck: 0.59" / 15 mm

   - Conning towers: Forward 0.59" / 15 mm, Aft 0.00" / 0 mm

Machinery:
   Diesel Internal combustion motors,
   Geared drive, 2 shafts, 335 shp / 250 Kw = 12.52 kts
   Range 600nm at 10.00 kts
   Bunker at max displacement = 7 tons

Complement:
   25 - 33

Cost:
   £0.029 million / $0.115 million

Distribution of weights at normal displacement:
   Armament: 9 tons, 4.6 %
      - Guns: 9 tons, 4.6 %
   Armour: 72 tons, 38.4 %
      - Belts: 32 tons, 17.0 %
      - Armament: 18 tons, 9.5 %
      - Armour Deck: 22 tons, 11.6 %
      - Conning Tower: 0 tons, 0.2 %
   Machinery: 11 tons, 5.9 %
   Hull, fittings & equipment: 69 tons, 36.7 %
   Fuel, ammunition & stores: 16 tons, 8.5 %
   Miscellaneous weights: 11 tons, 5.8 %
      - Hull below water: 4 tons
      - On freeboard deck: 5 tons
      - Above deck: 2 tons
Fittings: 
-4 t:  Diesel machinery, BW
-5 t:  Weight reserve/deck cargo, FD
-1 t:  1930 FC, AD
-1 t:  Searchlight, AD

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     664 lbs / 301 Kg = 51.6 x 3.0 " / 75 mm shells or 1.1 torpedoes
   Stability (Unstable if below 1.00): 1.18
   Metacentric height 0.6 ft / 0.2 m
   Roll period: 10.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.22
   Seaboat quality  (Average = 1.00): 1.05

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.590 / 0.592
   Length to Beam Ratio: 7.33 : 1
   'Natural speed' for length: 12.01 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 1.64 ft / 0.50 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   25.00 %,  8.20 ft / 2.50 m,  6.23 ft / 1.90 m
      - Forward deck:   25.00 %,  6.23 ft / 1.90 m,  4.27 ft / 1.30 m
      - Aft deck:   35.00 %,  4.27 ft / 1.30 m,  4.27 ft / 1.30 m
      - Quarter deck:   15.00 %,  4.27 ft / 1.30 m,  4.27 ft / 1.30 m
      - Average freeboard:      5.20 ft / 1.59 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 37.9 %
      - Above water (accommodation/working, high = better): 73.3 %
   Waterplane Area: 2,059 Square feet or 191 Square metres
   Displacement factor (Displacement / loading): 148 %
   Structure weight / hull surface area: 27 lbs/sq ft or 133 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.99
      - Longitudinal: 1.09
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

The Rock Doctor

Refit of the SOP-11 submarine chasers.  Replacement of gun armament and FC.  ASW fit seemed adequate for the size and role of the units.


Enter ship name, Enter country Enter ship type laid down 1920

Displacement:
   195 t light; 207 t standard; 220 t normal; 230 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (138.21 ft / 131.23 ft) x 19.03 ft x (6.56 / 6.78 ft)
   (42.13 m / 40.00 m) x 5.80 m  x (2.00 / 2.07 m)

Armament:
      2 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1920 Model
     2 x Single mounts on centreline, evenly spread
      3 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1920 Model
     2 x Single mounts on sides, aft deck forward
      2 raised mounts
     1 x Single mount on centreline, forward deck centre
      1 raised mount
      Weight of broadside 9 lbs / 4 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.59" / 15 mm         -               -
   2nd:   0.59" / 15 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 2,547 shp / 1,900 Kw = 20.20 kts
   Range 2,000nm at 10.00 kts
   Bunker at max displacement = 23 tons

Complement:
   28 - 37

Cost:
   £0.047 million / $0.190 million

Distribution of weights at normal displacement:
   Armament: 3 tons, 1.3 %
      - Guns: 3 tons, 1.3 %
   Armour: 4 tons, 1.6 %
      - Armament: 4 tons, 1.6 %
   Machinery: 89 tons, 40.5 %
   Hull, fittings & equipment: 80 tons, 36.3 %
   Fuel, ammunition & stores: 25 tons, 11.2 %
   Miscellaneous weights: 20 tons, 9.1 %
      - Hull below water: 5 tons
      - On freeboard deck: 14 tons
      - Above deck: 1 tons

5t:  Basic hydrophones
14 t:  existing ASW kit
1 t:  1930 FC

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     155 lbs / 70 Kg = 40.7 x 2.0 " / 50 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.20
   Metacentric height 0.6 ft / 0.2 m
   Roll period: 10.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 60 %
         - Recoil effect (Restricted arc if above 1.00): 0.07
   Seaboat quality  (Average = 1.00): 1.09

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.470 / 0.476
   Length to Beam Ratio: 6.90 : 1
   'Natural speed' for length: 11.46 kts
   Power going to wave formation at top speed: 72 %
   Trim (Max stability = 0, Max steadiness = 100): 55
   Bow angle (Positive = bow angles forward): 15.00 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 %,  13.78 ft / 4.20 m,  11.81 ft / 3.60 m
      - Forward deck:   30.00 %,  11.81 ft / 3.60 m,  7.87 ft / 2.40 m
      - Aft deck:   35.00 %,  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:      9.41 ft / 2.87 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 140.3 %
      - Above water (accommodation/working, high = better): 96.8 %
   Waterplane Area: 1,620 Square feet or 151 Square metres
   Displacement factor (Displacement / loading): 105 %
   Structure weight / hull surface area: 23 lbs/sq ft or 113 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.70
      - Longitudinal: 7.53
      - Overall: 0.89
   Caution: Hull subject to strain in open-sea
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room

Armament, FC new.  ASW unchanged, it's fine.

Guns   .006/.003
Gun armor .004/.004
FC .001/.001
=====
$.011/.008 BP

The Rock Doctor

Refit of the Borys class sealift ships.  Surprise, new armament and FC.


Enter ship name, Enter country Enter ship type laid down 1916

Displacement:
   3,383 t light; 3,479 t standard; 3,856 t normal; 4,158 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (326.87 ft / 321.52 ft) x 49.21 ft x (13.12 / 14.00 ft)
   (99.63 m / 98.00 m) x 15.00 m  x (4.00 / 4.27 m)

Armament:
      1 - 2.95" / 75.0 mm 45.0 cal gun - 12.98lbs / 5.89kg shells, 250 per gun
     Dual purpose gun in deck mount, 1916 Model
     1 x Single mount on centreline, aft deck aft
      1 raised mount aft
      4 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1916 Model
     2 x Twin mounts on sides, forward deck centre
      2 raised mounts
      8 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1916 Model
     4 x Twin mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 31 lbs / 14 kg

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

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 6,702 shp / 5,000 Kw = 17.94 kts
   Range 10,000nm at 10.00 kts
   Bunker at max displacement = 679 tons

Complement:
   244 - 318

Cost:
   £0.255 million / $1.019 million

Distribution of weights at normal displacement:
   Armament: 8 tons, 0.2 %
      - Guns: 8 tons, 0.2 %
   Armour: 6 tons, 0.1 %
      - Armament: 6 tons, 0.1 %
   Machinery: 250 tons, 6.5 %
   Hull, fittings & equipment: 1,014 tons, 26.3 %
   Fuel, ammunition & stores: 473 tons, 12.3 %
   Miscellaneous weights: 2,106 tons, 54.6 %
      - Hull above water: 1,000 tons
      - On freeboard deck: 1,080 tons
      - Above deck: 26 tons

-1000t:  Deck cargo
-1080t:  bracing and strengthening for deck cargo
-25t:  long range wireless
-1t:  fire control

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8,806 lbs / 3,994 Kg = 684.1 x 3.0 " / 75 mm shells or 2.3 torpedoes
   Stability (Unstable if below 1.00): 1.16
   Metacentric height 2.3 ft / 0.7 m
   Roll period: 13.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.01
   Seaboat quality  (Average = 1.00): 1.82

Hull form characteristics:
   Hull has raised forecastle, raised quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.650 / 0.657
   Length to Beam Ratio: 6.53 : 1
   'Natural speed' for length: 17.93 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 39
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 1.64 ft / 0.50 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   15.00 %,  21.00 ft / 6.40 m,  21.00 ft / 6.40 m
      - Forward deck:   40.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Aft deck:   30.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Quarter deck:   15.00 %,  21.00 ft / 6.40 m,  21.00 ft / 6.40 m
      - Average freeboard:      15.49 ft / 4.72 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 51.4 %
      - Above water (accommodation/working, high = better): 124.2 %
   Waterplane Area: 12,121 Square feet or 1,126 Square metres
   Displacement factor (Displacement / loading): 146 %
   Structure weight / hull surface area: 58 lbs/sq ft or 282 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.78
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Warning: Date too early for dual purpose gun - Main Battery

Change armament, add FC.

guns .016/.008
gun armor .006/.006
FC .001/.001
=====
$.023/.015

The Rock Doctor

A refit of the Ogre-class torpedo-boats, which function as leaders in colonial stations.

The main battery is updated to improved air defence and night-fighting doodads are fitted.  Updated fire control and ASW weapons are fitted, though I need to determined exactly what those weapons are.

The trade-off is that one of the two torpedo carriages is landed to save topweight.

Unit cost is $0.11 and 0.063 BP.



Enter ship name, Enter country Enter ship type laid down 1919

Displacement:
   1,413 t light; 1,476 t standard; 1,643 t normal; 1,776 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (369.89 ft / 360.89 ft) x 32.81 ft x (12.14 / 12.78 ft)
   (112.74 m / 110.00 m) x 10.00 m  x (3.70 / 3.90 m)

Armament:
      4 - 3.94" / 100 mm 45.0 cal guns - 30.78lbs / 13.96kg shells, 300 per gun
     Dual purpose guns in deck mounts, 1919 Model
     4 x Single mounts on centreline, evenly spread
      2 raised mounts
      2 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,500 per gun
     Anti-air guns in deck mount, 1919 Model
     1 x Twin mount on centreline, forward deck aft
      8 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1919 Model
     4 x Twin mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 132 lbs / 60 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.59" / 15 mm   0.12" / 3 mm            -
   2nd:   0.59" / 15 mm         -               -
   3rd:   0.59" / 15 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 32,172 shp / 24,000 Kw = 32.00 kts
   Range 8,000nm at 10.00 kts
   Bunker at max displacement = 300 tons

Complement:
   128 - 167

Cost:
   £0.386 million / $1.545 million

Distribution of weights at normal displacement:
   Armament: 27 tons, 1.6 %
      - Guns: 27 tons, 1.6 %
   Armour: 8 tons, 0.5 %
      - Armament: 8 tons, 0.5 %
   Machinery: 861 tons, 52.4 %
   Hull, fittings & equipment: 374 tons, 22.8 %
   Fuel, ammunition & stores: 230 tons, 14.0 %
   Miscellaneous weights: 142 tons, 8.6 %
      - Hull below water: 15 tons
      - On freeboard deck: 39 tons
      - Above deck: 88 tons

Fittings:
-15 t:  Enhanced Hydrophone Package (BW)
-15 t:  ASW stuff TBD (FD)
-16 t:  1x4 530 HW torpedo carriage (FD)
-8 t:  Weight reserve
-50 t:  Command facilities (AD)
-25 t:  L/R wireless (AD)
-3 t:  1930 fire control (AD)
-10 t:  Night-fighting doodads (AD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     386 lbs / 175 Kg = 12.6 x 3.9 " / 100 mm shells or 0.3 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 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.16
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.400 / 0.411
   Length to Beam Ratio: 11.00 : 1
   'Natural speed' for length: 19.00 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 15.00 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 %,  21.33 ft / 6.50 m,  16.40 ft / 5.00 m
      - Forward deck:   29.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Aft deck:   36.00 %,  8.53 ft / 2.60 m,  8.53 ft / 2.60 m
      - Quarter deck:   15.00 %,  8.53 ft / 2.60 m,  8.53 ft / 2.60 m
      - Average freeboard:      12.78 ft / 3.90 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 175.8 %
      - Above water (accommodation/working, high = better): 130.6 %
   Waterplane Area: 7,288 Square feet or 677 Square metres
   Displacement factor (Displacement / loading): 66 %
   Structure weight / hull surface area: 29 lbs/sq ft or 142 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.12
      - Overall: 0.54
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Warning: Date too early for dual purpose gun - Main Battery

new guns:  .054/.027
gun armor:  .008/.008
new ASW:  .030/.015
new FC:  .003/.003
new NFD:  0.010/.010
=====
.105/.063

Fittings:
88:  50 Command, 3 FC, 25 LRWL, 10 NFD
39:  16 torp, 15 ASW, 8 WRes
15:  EHP

The Rock Doctor

I'm cognizant that the wee little carrier Labedz just isn't really big enough to do anything really useful now, and her dimensions make the use of post-1933 aircraft, even in a training capacity doubtful.  Setting aside what I might do with that ship, it raises the question of what to do about carrier training.

One option is to utilized CV Wrona, which at ~11,000 t is not exactly a huge or capable carrier in her own right.  She'll be able to embark 15 planes, which is plenty for training purposes.  She can be made available as the two Hydry class carriers come into service.

The other option is to purpose-built a training unit.  This would be less armored - maybe only a basic deck to protect against crashing cadets - and slower, perhaps 25-27 knots to allow pacing with the battleline if pressed into combat service.  Figure 16 planes.  This would be around 7,000 -8,000 t.

A third option is to expand the purpose-build to a flight-deck cruiser with a 3-gun or 4-gun 150mm/50 gun to test the whole flight-deck cruiser concept in earnest.  This would probably get standard cruiser protection and speed, so we're probably looking at something more in the 10,000 t range...

The Rock Doctor

The Puck-class torpedo-boats are of questionable value, but they're due for a refit regardless.

While the 200mm guns remain in place, the rest of the guns are replaced for more effective DP and AA capability.  Some ASW capability is traded off for the installation of night-fighting gear, and fire control is updated.

Total cost is estimated at $0.08 and 0.054 BP per unit, with four units to update.




Enter ship name, Enter country Enter ship type laid down 1919

Displacement:
   1,485 t light; 1,556 t standard; 1,748 t normal; 1,902 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (372.05 ft / 360.89 ft) x 32.81 ft x (11.48 / 12.19 ft)
   (113.40 m / 110.00 m) x 10.00 m  x (3.50 / 3.72 m)

Armament:
      2 - 7.87" / 200 mm 45.0 cal guns - 246.19lbs / 111.67kg shells, 50 per gun
     Breech loading guns in casemate mounts, 1919 Model
     2 x Single mounts on sides, forward deck centre
      3 - 3.94" / 100 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 250 per gun
     Dual purpose guns in deck mounts, 1919 Model
     2 x Single mounts on sides, aft deck centre
      2 raised mounts
     1 x Single mount on centreline, forward deck centre
      1 raised mount
      2 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,500 per gun
     Anti-air guns in deck mount, 1919 Model
     1 x Twin mount on centreline, forward deck aft
      8 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1919 Model
     4 x Twin mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 594 lbs / 269 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   0.12" / 3 mm            -
   2nd:   0.59" / 15 mm   0.12" / 3 mm            -
   3rd:   0.59" / 15 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 33,512 shp / 25,000 Kw = 31.78 kts
   Range 9,000nm at 10.00 kts
   Bunker at max displacement = 345 tons

Complement:
   134 - 175

Cost:
   £0.448 million / $1.790 million

Distribution of weights at normal displacement:
   Armament: 92 tons, 5.3 %
      - Guns: 92 tons, 5.3 %
   Armour: 13 tons, 0.7 %
      - Armament: 13 tons, 0.7 %
   Machinery: 890 tons, 50.9 %
   Hull, fittings & equipment: 422 tons, 24.1 %
   Fuel, ammunition & stores: 263 tons, 15.0 %
   Miscellaneous weights: 68 tons, 3.9 %
      - Hull below water: 15 tons
      - On freeboard deck: 33 tons
      - Above deck: 20 tons

Fittings:
-15 t:  Enhanced hydrophone package (BW)
-10 t:  ASW kit TBD (FD)
-12 t:  1x3 HW 530mm torpedo carriage, no reloads (FD)
-11 t:  Weight reserve (FD)
-10 t:  1930 fire control (AD)
-10 t:  Nightfighting doodads (AD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     422 lbs / 191 Kg = 1.7 x 7.9 " / 200 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.15
   Metacentric height 1.2 ft / 0.4 m
   Roll period: 12.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 81 %
         - Recoil effect (Restricted arc if above 1.00): 0.73
   Seaboat quality  (Average = 1.00): 1.09

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.450 / 0.461
   Length to Beam Ratio: 11.00 : 1
   'Natural speed' for length: 19.00 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 74
   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 %,  21.65 ft / 6.60 m,  17.72 ft / 5.40 m
      - Forward deck:   30.00 %,  17.72 ft / 5.40 m,  17.72 ft / 5.40 m
      - Aft deck:   35.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Quarter deck:   15.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Average freeboard:      14.09 ft / 4.30 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 180.9 %
      - Above water (accommodation/working, high = better): 144.7 %
   Waterplane Area: 7,553 Square feet or 702 Square metres
   Displacement factor (Displacement / loading): 64 %
   Structure weight / hull surface area: 33 lbs/sq ft or 159 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.51
      - Overall: 0.55
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Warning: Date too early for dual purpose gun - 2nd Battery

1 AD and 14 on deck so need 27 FD

The 8" are 72 and 9


New guns:  .04.02
New gun armor:  .004/.004
New ASW:  0.020/.010
NFD/FC:  .02/.02
=====
.084/.054

The Rock Doctor

Honest to god refit for the Liedtke class sloops, which I intended to do in 1931 and apparently never followed through on.

The armament's replaced and upgraded.  New ASW kit, fire control, searchlights, and a basic Huelsmeyer device.  Total cost is $0.10 and 0.077 BP each, for three units.



Enter ship name, Enter country Enter ship type laid down 1913

Displacement:
   1,581 t light; 1,633 t standard; 1,767 t normal; 1,875 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (237.10 ft / 229.66 ft) x 42.65 ft x (11.48 / 12.03 ft)
   (72.27 m / 70.00 m) x 13.00 m  x (3.50 / 3.67 m)

Armament:
      2 - 3.94" / 100 mm 45.0 cal guns - 30.78lbs / 13.96kg shells, 250 per gun
     Dual purpose guns in deck mounts, 1913 Model
     2 x Single mounts on centreline ends, evenly spread
      2 raised mounts
      2 - 1.97" / 50.0 mm 60.0 cal guns - 4.19lbs / 1.90kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1913 Model
     2 x Single mounts on sides, aft deck forward
      2 raised mounts
      4 - 0.59" / 15.0 mm 90.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1913 Model
     2 x Single mounts on sides, forward deck aft
      2 raised mounts
      Weight of broadside 70 lbs / 32 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   0.98" / 25 mm   182.09 ft / 55.50 m   15.75 ft / 4.80 m
   Ends:   0.98" / 25 mm     47.54 ft / 14.49 m   7.87 ft / 2.40 m
   Upper:   0.98" / 25 mm   114.83 ft / 35.00 m   7.87 ft / 2.40 m
     Main Belt covers 122 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.97" / 50 mm   149.28 ft / 45.50 m   10.83 ft / 3.30 m
   Beam between torpedo bulkheads 29.53 ft / 9.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm   0.12" / 3 mm            -
   2nd:   0.59" / 15 mm         -               -
   3rd:   0.59" / 15 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 8,043 shp / 6,000 Kw = 20.47 kts
   Range 5,000nm at 10.00 kts
   Bunker at max displacement = 242 tons

Complement:
   136 - 177

Cost:
   £0.113 million / $0.451 million

Distribution of weights at normal displacement:
   Armament: 15 tons, 0.8 %
      - Guns: 15 tons, 0.8 %
   Armour: 298 tons, 16.9 %
      - Belts: 175 tons, 9.9 %
      - Torpedo bulkhead: 118 tons, 6.7 %
      - Armament: 5 tons, 0.3 %
   Machinery: 315 tons, 17.8 %
   Hull, fittings & equipment: 563 tons, 31.8 %
   Fuel, ammunition & stores: 187 tons, 10.6 %
   Miscellaneous weights: 390 tons, 22.1 %
      - Hull below water: 25 tons
      - Hull above water: 100 tons
      - On freeboard deck: 218 tons
      - Above deck: 47 tons

Fittings:
-25 t:  Enhanced hydrophone package and sonar (BW)
-100 t:  Extra short term accommodations, sick bay (AW)
-150 t:  Towing rig (FD)
-50 t:  Extra boats and firefighting gear (FD)
-10 t:  ASW munitions TBD (FD)
-8 t:  Weight reserve (FD)
-25 t:  L/R wireless (AD)
-10 t:  Nightfighting doodads (AD)
-10 t:  Destroyer-scale Huelsmeyer device (AD)
-2 t:  1930 fire control (AD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3,912 lbs / 1,774 Kg = 128.2 x 3.9 " / 100 mm shells or 1.4 torpedoes
   Stability (Unstable if below 1.00): 1.29
   Metacentric height 2.2 ft / 0.7 m
   Roll period: 12.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 66 %
         - Recoil effect (Restricted arc if above 1.00): 0.05
   Seaboat quality  (Average = 1.00): 1.33

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.550 / 0.557
   Length to Beam Ratio: 5.38 : 1
   'Natural speed' for length: 15.15 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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:   20.00 %,  23.62 ft / 7.20 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 %,  11.81 ft / 3.60 m,  11.81 ft / 3.60 m
      - Quarter deck:   15.00 %,  11.81 ft / 3.60 m,  11.81 ft / 3.60 m
      - Average freeboard:      16.06 ft / 4.90 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 100.1 %
      - Above water (accommodation/working, high = better): 147.9 %
   Waterplane Area: 6,836 Square feet or 635 Square metres
   Displacement factor (Displacement / loading): 130 %
   Structure weight / hull surface area: 51 lbs/sq ft or 250 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.84
      - Longitudinal: 4.46
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Good seaboat, rides out heavy weather easily

Warning: Date too early for dual purpose gun - 2nd Battery like that's just your opinion, man.


Cost
New guns:  .030/.015
New gun armor:  .005/.005
New ASW munitions:  .020/.010
New fittings (sensors, FC, lights):  .047/.047
=======
$0.102/0.077 BP

The Rock Doctor

#234
The flag-tender torpedo-boats, now designated the D-class, built to provide additional signaling and emergency flag facilities to the home and Caribbean battleship and armored cruiser forces.

The design is mildly evolved from one I posted on page 13, mainly just fidgeting with what misc. weight was assigned where.

The ship has a somewhat unorthodox appearance for a torpedo-boat, with a very large forward superstructure that incorporates the flag facilities and rudimentary overnight accommodation for a flag officer and a skeleton staff.


Enter ship name, Enter country Enter ship type laid down 1933

Displacement:
    2,494 t light; 2,625 t standard; 2,990 t normal; 3,283 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (415.78 ft / 401.90 ft) x 39.37 ft x (15.75 / 16.79 ft)
    (126.73 m / 122.50 m) x 12.00 m  x (4.80 / 5.12 m)

Armament:
      8 - 3.94" / 100 mm 45.0 cal guns - 30.78lbs / 13.96kg shells, 400 per gun
      Dual purpose guns in deck mounts, 1933 Model
      4 x Twin mounts on centreline, evenly spread
        2 raised mounts
      4 - 1.97" / 50.0 mm 60.0 cal guns - 4.19lbs / 1.90kg shells, 1,500 per gun
      Anti-air guns in deck mounts, 1933 Model
      2 x Twin mounts on sides, forward deck aft
      8 - 0.59" / 15.0 mm 90.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
      Machine guns in deck mounts, 1933 Model
      4 x Twin mounts on sides, evenly spread
        4 raised mounts
      Weight of broadside 264 lbs / 120 kg

Armour:
  - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    0.98" / 25 mm    0.59" / 15 mm              -
    3rd:    0.59" / 15 mm          -                  -
    4th:    0.59" / 15 mm          -                  -

Machinery:
    Oil fired boilers, steam turbines,
    Geared drive, 2 shafts, 55,295 shp / 41,250 Kw = 33.52 kts
    Range 6,000nm at 15.00 kts
    Bunker at max displacement = 658 tons

Complement:
    201 - 262

Cost:
    £1.467 million / $5.869 million

Distribution of weights at normal displacement:
    Armament: 44 tons, 1.5 %
      - Guns: 44 tons, 1.5 %
    Armour: 20 tons, 0.7 %
      - Armament: 20 tons, 0.7 %
    Machinery: 1,497 tons, 50.1 %
    Hull, fittings & equipment: 712 tons, 23.8 %
    Fuel, ammunition & stores: 496 tons, 16.6 %
    Miscellaneous weights: 221 tons, 7.4 %
      - Hull below water: 10 tons
      - On freeboard deck: 50 tons
      - Above deck: 161 tons

Fittings:
-10 t:  Sonar (BW)
-20 t:  Extra boat handling facilities (FD)
-16 t:  1x4 530mm heavyweight torpedo carriage, no reloads (FD)
-10 t:  ASW munitions TBD (FD)
-70 t:  Command facilities (AD)
-35 t:  L/R and second S/R wireless (AD)
-25 t:  Extra signaling equipment (larger masts, flag lockers, etc) (AD)
-10 t:  Nightfighting doodads (AD)
-10 t:  Destroyer-scale Huelsmeyer device (AD)
-5 t:  Fire control (AD)

-4 t + 6 t:  Weight reserve (FD/AD)


Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      853 lbs / 387 Kg = 28.0 x 3.9 " / 100 mm shells or 0.4 torpedoes
    Stability (Unstable if below 1.00): 1.22
    Metacentric height 1.8 ft / 0.5 m
    Roll period: 12.4 seconds
    Steadiness    - As gun platform (Average = 50 %): 70 %
            - Recoil effect (Restricted arc if above 1.00): 0.19
    Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
    Hull has rise forward of midbreak,
      a normal bow and a cruiser stern
    Block coefficient (normal/deep): 0.420 / 0.433
    Length to Beam Ratio: 10.21 : 1
    'Natural speed' for length: 20.05 kts
    Power going to wave formation at top speed: 65 %
    Trim (Max stability = 0, Max steadiness = 100): 58
    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 %,  24.61 ft / 7.50 m,  19.69 ft / 6.00 m
      - Forward deck:    42.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Aft deck:    23.00 %,  11.81 ft / 3.60 m,  11.81 ft / 3.60 m
      - Quarter deck:    15.00 %,  11.81 ft / 3.60 m,  11.81 ft / 3.60 m
      - Average freeboard:        17.09 ft / 5.21 m

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 168.4 %
        - Above water (accommodation/working, high = better): 158.0 %
    Waterplane Area: 9,865 Square feet or 916 Square metres
    Displacement factor (Displacement / loading): 83 %
    Structure weight / hull surface area: 37 lbs/sq ft or 179 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0.50
        - Longitudinal: 1.83
        - Overall: 0.56
    Cramped 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


Jefgte

Excellent concept.

On your drawing, you can enlarge the superstructure from the bridge to the funnel, like the cruiser Pola, to have more place for the staff.
"You French are fighting for money, while we English are fighting for honor!"
"Everyone is fighting for what they miss. "
Surcouf

The Rock Doctor

Musings on 1934 build options:

Relevant techs:

-1932 Capital Ships --> Improved DP batteries and decapping plates, available for 1934
-1932 CV --> stuff, available for 1934
-1932 Cruisers --> Small transoms, available for 1935
-1932 DD --> Large transoms on destroyer-tech ships, available for 1935

1.  Capital Ships

-I want another pair of ~Ingenhousz-style ships to finish replacing the first-generation dreadnoughts.  I can incorporate the 1932 capital ship techs into a 1934 lay-down.  A small transom would be nice, but probably not super-consequential on a 27 knot behemoth.

-I also want more 250mm-armed armored cruisers to supplement existing units and replace the Lucznik class.  They're supposed to be 32 knot ships, so the transom is more important.  That probably argues for a delay to 1935.

-While I've muttered about monitors, the tonnage isn't there to build one right yet.  None of the new techs are super important anyway, other than maybe the improved DP battery.

2.  Carriers

-A larger carrier - Hydry or bigger - can come about in 1934 but my emphasis on speed would benefit from a transom in 1935.  Plus with ships laid down in 1932 and 1933, 1934 is theoretically a "pause" year for carriers, where there's a few months for Hydry's work-up trials to influence the 1935 design.  So I guess I'm waiting.

3.  Cruisers

-I lean toward runs of four cruisers every two years, and the current batch lines up nicely with the availability of small transoms in 1935, so no worries.

-Fast transports/korsarz built to cruiser standards will also benefit from waiting till 1935.

-Larger sloops might benefit from the small transom but I build them assembly-line style and will just iterate a new design for 1935.

4.  Torpedo-boats

-A large transom is theoretically favorable but practically problematic as I need to increase the speed to keep the engine percentage at 50%, and then the seakeeping dips and I need to increase freeboard and that costs me out of my weight reserve.  I haven't quite figured out how I'm going to square that circle just yet. 

-Fast minelayers won't get transoms because I'm going to assume the Union understands transoms pull stern-laid mines back toward the ship and don't want that to happen.  Not that fast minelayers are necessarily in the cards at the moment.

5.  So...

-I guess that probably argues for the 1934 focus to be a new battleship, continuation of the 1933 CL/DD/sloop designs, and continued thinking about subsequent AC/CV classes.

The Rock Doctor

First take on the 1934 battleship.

I wanted to incorporate a sturdy decapping plate without adding too much displacement; this necessitates moving from the heavy split-secondary battery to an all-DP battery.  Which is not terrible since I'll have the Improved DP secondaries from the 1932 tech when this is laid down.

The belt armor, then, works out to the 350mm belt seen on previous classes, with a 90mm decapping plate outboard.  Theoretically, that resists up to 450mm shells, maybe 18"shells.  Will Union battleships encounter shells that big?  I dunno, going to assume somebody unfriendly could field one.  If they go bigger than that I guess I'm SOL.

Also increased bunkerage, and tweaked freeboard since the deletion of the heavy secondary improved seakeeping all on its own.

I played with a small transom stern to see what would happen and the hull strength actually bumped down to 0.99 so screw that.

The ship's still about a thousand tonnes heavier than the Ingenhousz class but that's manageable.



Battleship K, Vilnius Union Ship of the Line, laid down 1934


Displacement:
    46,543 t light; 49,061 t standard; 52,554 t normal; 55,349 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (808.59 ft / 790.68 ft) x 108.27 ft (Bulges 114.83 ft) x (31.17 / 32.66 ft)
    (246.46 m / 241.00 m) x 33.00 m (Bulges 35.00 m)  x (9.50 / 9.95 m)

Armament:
      8 - 15.75" / 400 mm 50.0 cal guns - 2,425.09lbs / 1,100.00kg shells, 100 per gun
      Breech loading guns in turret on barbette mounts, 1934 Model
      4 x 2-gun mounts on centreline ends, evenly spread
        2 raised mounts - superfiring
      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, 1934 Model
      8 x 2-gun mounts on sides, evenly spread
      2 x 2-gun mounts on centreline, evenly spread
        2 double raised mounts
      24 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,500 per gun
      Anti-air guns in deck mounts, 1934 Model
      12 x Twin mounts on sides, evenly spread
        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, 1934 Model
      8 x Twin mounts on sides, evenly spread
        8 double raised mounts
      Weight of broadside 20,855 lbs / 9,460 kg

Armour:
  - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    17.3" / 440 mm    513.94 ft / 156.65 m    16.37 ft / 4.99 m
    Ends:    Unarmoured
      Main Belt covers 100 % of normal length
      Main Belt inclined 16.00 degrees (positive = in)

  - Torpedo Bulkhead - Additional damage containing bulkheads:
        2.95" / 75 mm    513.94 ft / 156.65 m    29.92 ft / 9.12 m
    Beam between torpedo bulkheads 82.02 ft / 25.00 m

  - Hull Bulges:
        0.59" / 15 mm    456.36 ft / 139.10 m    29.20 ft / 8.90 m

  - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    17.7" / 450 mm    7.87" / 200 mm        15.7" / 400 mm
    3rd:    1.97" / 50 mm    1.18" / 30 mm        1.97" / 50 mm
    4th:    0.59" / 15 mm          -                  -
    5th:    0.59" / 15 mm          -                  -

  - Armoured deck - multiple decks:
    For and Aft decks: 6.69" / 170 mm
    Forecastle: 5.51" / 140 mm  Quarter deck: 6.69" / 170 mm

  - Conning towers: Forward 15.75" / 400 mm, Aft 0.00" / 0 mm

Machinery:
    Oil fired boilers, steam turbines,
    Geared drive, 4 shafts, 120,644 shp / 90,000 Kw = 27.00 kts
    Range 24,000nm at 10.00 kts
    Bunker at max displacement = 6,288 tons

Complement:
    1,735 - 2,256

Cost:
    £19.463 million / $77.851 million

Distribution of weights at normal displacement:
    Armament: 4,071 tons, 7.7 %
      - Guns: 4,071 tons, 7.7 %
    Armour: 20,883 tons, 39.7 %
      - Belts: 6,282 tons, 12.0 %
      - Torpedo bulkhead: 1,680 tons, 3.2 %
      - Bulges: 291 tons, 0.6 %
      - Armament: 4,096 tons, 7.8 %
      - Armour Deck: 8,058 tons, 15.3 %
      - Conning Tower: 476 tons, 0.9 %
    Machinery: 3,471 tons, 6.6 %
    Hull, fittings & equipment: 17,300 tons, 32.9 %
    Fuel, ammunition & stores: 6,012 tons, 11.4 %
    Miscellaneous weights: 819 tons, 1.6 %
      - On freeboard deck: 119 tons
      - Above deck: 700 tons

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      92,673 lbs / 42,036 Kg = 47.5 x 15.7 " / 400 mm shells or 18.0 torpedoes
    Stability (Unstable if below 1.00): 1.14
    Metacentric height 7.2 ft / 2.2 m
    Roll period: 18.0 seconds
    Steadiness    - As gun platform (Average = 50 %): 70 %
            - Recoil effect (Restricted arc if above 1.00): 0.65
    Seaboat quality  (Average = 1.00): 1.27

Hull form characteristics:
    Hull has raised quarterdeck ,
      a normal bow and a cruiser stern
    Block coefficient (normal/deep): 0.650 / 0.653
    Length to Beam Ratio: 6.89 : 1
    'Natural speed' for length: 28.12 kts
    Power going to wave formation at top speed: 49 %
    Trim (Max stability = 0, Max steadiness = 100): 55
    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 %,  31.17 ft / 9.50 m,  22.97 ft / 7.00 m
      - Forward deck:    40.00 %,  22.97 ft / 7.00 m,  22.97 ft / 7.00 m
      - Aft deck:    25.00 %,  22.97 ft / 7.00 m,  22.97 ft / 7.00 m
      - Quarter deck:    15.00 %,  23.29 ft / 7.10 m,  23.29 ft / 7.10 m
      - Average freeboard:        23.67 ft / 7.22 m

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 72.2 %
        - Above water (accommodation/working, high = better): 165.3 %
    Waterplane Area: 65,579 Square feet or 6,092 Square metres
    Displacement factor (Displacement / loading): 114 %
    Structure weight / hull surface area: 211 lbs/sq ft or 1,028 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0.97
        - Longitudinal: 1.20
        - Overall: 1.00
    Excellent 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

24,000 nm @ 10 kts
16,400 nm @ 12 kts
4,990 nm @ 20 kts
3,660 nm @ 22.5 kts (half power)
2,200 nm @ 27 kts


The Rock Doctor

Was goofing around with a small flight deck cruiser:  12,100 t, cruiser armor, 16 planes, 1x4 150mm and 4x2 100mm on 32 knots.

Then I thought I'd dump the big turret and go with a uniform 5x2 130mm M&H.  Turns out that weight pretty much the same as the split battery.  More to the point, without the big gun, there was no reason to be a flight deck cruiser - only the full-length flight deck actually lowered the hull strength below 1.00. 

So the flight deck cruiser was tonne-for-tonne the superior design in this case.

Kaiser Kirk

Quote from: The Rock Doctor on July 04, 2024, 06:59:23 PMAlternate option for a guntub:  The 75mm and the centerline 15mm MG are swapped out for a lighter-weight 75mm mortar aft and a new-model 25mm AA gun forward.  A light belt protects the waterline against small-arms fire amidships.

Enter ship name, Enter country Enter ship type laid down 1933

Displacement:
   20 t light; 22 t standard; 23 t normal; 23 t full load


Very nice little tiny craft.
Not keen on the lack of deck armor or only the face shield on the gun.
But as my version is 60tons...or 3x larger, I suppose some sacrifices had to be made.
Though, mine has a 90mm gun and 118mm howitzer, so I get at least something for the extra 40 tons. Still, I should probably see if my design can be improved in 1934.
Did they beat the drum slowly,
Did they play the fife lowly,
Did they sound the death march, as they lowered you down,
Did the band play the last post and chorus,
Did the pipes play the flowers of the forest