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

[The Rock Doctor]

An updated korsarz that incorporates a bit of the thinking behind the fast transport from the first page.

The notion of delivering an MTB strike is less important here, since now we've got the promise of torpedo-bombers in a way that wasn't too real back in the 1910s.  The notion of delivering a company of troops, or a modest load of cargo, after a high speed run remains somewhat valid.  In that capacity, four landing craft have proven sufficient and are embarked here. 

Modest below- and on-deck cargo capacity is included.

Speed is not quite up to modern cruiser/destroyer speeds - or at least, not Union speeds.  But it's probably enough for most cases.  Hopefully.

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

Displacement:
   2,993 t light; 3,113 t standard; 3,446 t normal; 3,713 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (442.03 ft / 426.51 ft) x 42.65 ft x (14.11 / 14.90 ft)
   (134.73 m / 130.00 m) x 13.00 m  x (4.30 / 4.54 m)

Armament:
      4 - 3.94" / 100 mm 45.0 cal guns - 30.78lbs / 13.96kg shells, 400 per gun
     Dual purpose guns in deck mounts, 1931 Model
     2 x 2-gun mounts on centreline, evenly spread
      6 - 1.97" / 50.0 mm 60.0 cal guns - 4.19lbs / 1.90kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1931 Model
     1 x Twin mount on centreline, forward deck aft
      1 raised mount
     2 x Twin mounts on centreline, evenly spread
      2 raised mounts
      8 - 0.59" / 15.0 mm 90.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1931 Model
     4 x Twin mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 149 lbs / 68 kg

Armour:
   - 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         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 42,895 shp / 32,000 Kw = 30.88 kts
   Range 12,000nm at 10.00 kts
   Bunker at max displacement = 600 tons

Complement:
   224 - 292

Cost:
   £1.277 million / $5.107 million

Distribution of weights at normal displacement:
   Armament: 31 tons, 0.9%
      - Guns: 31 tons, 0.9%
   Armour: 21 tons, 0.6%
      - Armament: 21 tons, 0.6%
   Machinery: 1,283 tons, 37.2%
   Hull, fittings & equipment: 951 tons, 27.6%
   Fuel, ammunition & stores: 453 tons, 13.1%
   Miscellaneous weights: 708 tons, 20.5%
      - Hull below water: 100 tons
      - Hull above water: 300 tons
      - On freeboard deck: 288 tons
      - Above deck: 20 tons

Fittings:
-50 t:  Diesel fuel for landing craft/motor-torpedo boats/as wet cargo (BW)
-50 t:  Ordnance for motor-torpedo-boats/as dry cargo (BW)
-300 t:  Accommodation for 150 (long-term) or 600 (surge) troops or dry cargo (AW)
-240 t:  Davits and 4 x 20 t landing craft or motor-torpedo boats (FD)
-10 t:  Cranes (FD)
-38 t:  Deck cargo/weight reserve (FD)
-4 t:  Fire control (AD)
-10 t:  Nightfighting doodads and lighting (AD)
-6 t:  weight reserve (AD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1,809 lbs / 821 Kg = 59.3 x 3.9 " / 100 mm shells or 0.6 torpedoes
   Stability (Unstable if below 1.00): 1.13
   Metacentric height 1.7 ft / 0.5 m
   Roll period: 13.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.07
   Seaboat quality  (Average = 1.00): 1.13

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.470 / 0.479
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 20.65 kts
   Power going to wave formation at top speed: 61 %
   Trim (Max stability = 0, Max steadiness = 100): 62
   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%,  24.61 ft / 7.50 m,  20.01 ft / 6.10 m
      - Forward deck:   25.00%,  20.01 ft / 6.10 m,  20.01 ft / 6.10 m
      - Aft deck:   40.00%,  12.14 ft / 3.70 m,  12.14 ft / 3.70 m
      - Quarter deck:   15.00%,  12.14 ft / 3.70 m,  12.14 ft / 3.70 m
      - Average freeboard:      16.05 ft / 4.89 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 136.8%
      - Above water (accommodation/working, high = better): 152.2%
   Waterplane Area: 11,801 Square feet or 1,096 Square metres
   Displacement factor (Displacement / loading): 102%
   Structure weight / hull surface area: 47 lbs/sq ft or 231 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.70
      - Longitudinal: 1.36
      - Overall: 0.75
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

[The Rock Doctor]

The 1931 harbour patrol boat basically trades out slightly light engine weight for more ammunition.  As a result, it has a light displacement one tonne lighter than the 1926 class.

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

Displacement:
   54 t light; 57 t standard; 58 t normal; 59 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (84.29 ft / 78.74 ft) x 13.12 ft x (3.94 / 3.98 ft)
   (25.69 m / 24.00 m) x 4.00 m  x (1.20 / 1.21 m)

Armament:
      1 - 1.97" / 50.0 mm 60.0 cal gun - 4.18lbs / 1.89kg shells, 500 per gun
     Quick firing gun in deck mount, 1931 Model
     1 x Single mount on centreline forward
      2 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1931 Model
     1 x Single mount on centreline, aft deck centre
     1 x Single mount on centreline, forward deck aft
      1 raised mount
      Weight of broadside 4 lbs / 2 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         -               -

   - Conning towers: Forward 0.79" / 20 mm, Aft 0.00" / 0 mm

Machinery:
   Diesel Internal combustion motors,
   Electric cruising motors plus geared drives, 2 shafts, 402 shp / 300 Kw = 14.78 kts
   Range 300nm at 10.00 kts
   Bunker at max displacement = 2 tons

Complement:
   9 - 13

Cost:
   £0.017 million / $0.070 million

Distribution of weights at normal displacement:
   Armament: 1 tons, 2.5%
      - Guns: 1 tons, 2.5%
   Armour: 3 tons, 5.4%
      - Armament: 3 tons, 4.9%
      - Conning Tower: 0 tons, 0.4%
   Machinery: 12 tons, 20.7%
   Hull, fittings & equipment: 19 tons, 32.0%
   Fuel, ammunition & stores: 4 tons, 6.8%
   Miscellaneous weights: 19 tons, 32.7%
      - Hull below water: 12 tons
      - On freeboard deck: 6 tons
      - Above deck: 1 tons

Fittings:
-7 t:  D-E drive, BW
-5 t:  Basic Hydrophone Paackage, BW
-2 t:  Depth charges, FD (20 x 90 kg DC)
-4 t:  Passengers or deck cargo, FD
-1 t:  Searchlight, AD

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     77 lbs / 35 Kg = 20.2 x 2.0 " / 50 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.18
   Metacentric height 0.3 ft / 0.1 m
   Roll period: 9.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.13
   Seaboat quality  (Average = 1.00): 1.29

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.502
   Length to Beam Ratio: 6.00 : 1
   'Natural speed' for length: 8.87 kts
   Power going to wave formation at top speed: 71 %
   Trim (Max stability = 0, Max steadiness = 100): 54
   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%,  9.84 ft / 3.00 m,  7.87 ft / 2.40 m
      - Forward deck:   20.00%,  7.87 ft / 2.40 m,  5.91 ft / 1.80 m
      - Aft deck:   45.00%,  5.91 ft / 1.80 m,  5.91 ft / 1.80 m
      - Quarter deck:   15.00%,  5.91 ft / 1.80 m,  5.91 ft / 1.80 m
      - Average freeboard:      6.65 ft / 2.03 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 98.9%
      - Above water (accommodation/working, high = better): 90.5%
   Waterplane Area: 688 Square feet or 64 Square metres
   Displacement factor (Displacement / loading): 116%
   Structure weight / hull surface area: 13 lbs/sq ft or 64 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.60
      - Longitudinal: 8.81
      - Overall: 0.78
   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
   Good seaboat, rides out heavy weather easily

[The Rock Doctor]

Alternate approach to the 1931 battleship.

This one retains the heavy secondary/dedicated AA tertiary layout of the Gadolins - albeit with more of the AA.  This would be more conservative compared to the first take, which has a uniform 130mm DP battery.  Is it more effective in northern waters with often crappy weather, or is it a poor use of tonnage and deck space as Bismarck was considered to be.

The extra weight of the battery is paid for with a loss of speed, back down to the 27 knots of previous units.  Still good.

A bit of deck space is created through the adaption of a fixed cross-deck catapult, which I've costed as two normal 5 t cats.  This lets me squeeze the forward and aft superstructure a bit close, creating the space for the double-superfiring 100mm.

Another option for armament is to move the two double-superfiring mounts to normal superfiring mounts just ahead of turret C.  A couple of 50mm twins would move to the double-superfiring position instead.

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

Displacement:
   44,973 t light; 47,445 t standard; 50,374 t normal; 52,717 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (775.54 ft / 757.87 ft) x 108.27 ft (Bulges 114.83 ft) x (31.17 / 32.47 ft)
   (236.38 m / 231.00 m) x 33.00 m (Bulges 35.00 m)  x (9.50 / 9.90 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, 1931 Model
     4 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      12 - 5.91" / 150 mm 50.0 cal guns - 121.25lbs / 55.00kg shells, 250 per gun
     Breech loading guns in turret on barbette mounts, 1931 Model
     6 x 2-gun mounts on side ends, majority forward
      16 - 3.94" / 100 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 400 per gun
     Anti-air guns in deck mounts, 1931 Model
     6 x Twin mounts on side ends, majority forward
      6 raised mounts
     2 x Twin mounts on centreline, evenly spread
      2 double raised mounts
      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
     8 x Twin mounts on sides, evenly spread
     2 x Twin mounts on centreline, 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
     8 x Twin mounts on sides, evenly spread
      8 double raised mounts
      Weight of broadside 21,434 lbs / 9,722 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.8" / 350 mm   491.99 ft / 149.96 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   491.99 ft / 149.96 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
   2nd:   4.72" / 120 mm   1.97" / 50 mm      3.94" / 100 mm
   3rd:   0.79" / 20 mm   0.79" / 20 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, 120,643 shp / 90,000 Kw = 27.05 kts
   Range 20,000nm at 10.00 kts
   Bunker at max displacement = 5,271 tons

Complement:
   1,680 - 2,185

Cost:
   £17.281 million / $69.125 million

Distribution of weights at normal displacement:
   Armament: 4,169 tons, 8.3%
      - Guns: 4,169 tons, 8.3%
   Armour: 19,405 tons, 38.5%
      - Belts: 4,814 tons, 9.6%
      - Torpedo bulkhead: 1,608 tons, 3.2%
      - Bulges: 291 tons, 0.6%
      - Armament: 4,506 tons, 8.9%
      - Armour Deck: 7,723 tons, 15.3%
      - Conning Tower: 463 tons, 0.9%
   Machinery: 3,608 tons, 7.2%
   Hull, fittings & equipment: 16,871 tons, 33.5%
   Fuel, ammunition & stores: 5,400 tons, 10.7%
   Miscellaneous weights: 920 tons, 1.8%
      - On freeboard deck: 220 tons
      - Above deck: 700 tons

Fittings:
-420 t:  Fire control (AD)
-100 t:  Flag facilities (AD)
-50 t:  Redundant L/R wireless (AD)
-25 t:  Nightfighting doodads (AD)
-25 t:  Huelsmeyer device (AD)
-60 t:  2 armed floatplanes and a cross-deck catapult (FD)
-80 + 160 t:  Weight reserve (AD/FD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     83,424 lbs / 37,840 Kg = 42.7 x 15.7 " / 400 mm shells or 15.7 torpedoes
   Stability (Unstable if below 1.00): 1.11
   Metacentric height 6.9 ft / 2.1 m
   Roll period: 18.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.69
   Seaboat quality  (Average = 1.00): 1.22

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.650 / 0.653
   Length to Beam Ratio: 6.60 : 1
   'Natural speed' for length: 27.53 kts
   Power going to wave formation at top speed: 51 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   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%,  30.51 ft / 9.30 m,  23.62 ft / 7.20 m
      - Forward deck:   40.00%,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
      - Aft deck:   25.00%,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
      - Quarter deck:   15.00%,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
      - Average freeboard:      24.17 ft / 7.37 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 77.0%
      - Above water (accommodation/working, high = better): 168.3%
   Waterplane Area: 62,858 Square feet or 5,840 Square metres
   Displacement factor (Displacement / loading): 111%
   Structure weight / hull surface area: 215 lbs/sq ft or 1,048 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.32
      - 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

[Kaiser Kirk]

This one retains the heavy secondary/dedicated AA tertiary layout of the Gadolins - albeit with more of the AA.  This would be more conservative compared to the first take, which has a uniform 130mm DP battery.  Is it more effective in northern waters with often crappy weather, or is it a poor use of tonnage and deck space as Bismarck was considered to be.

A bit of deck space is created through the adaption of a fixed cross-deck catapult, which I've costed as two normal 5 t cats.  This lets me squeeze the forward and aft superstructure a bit close, creating the space for the double-superfiring 100mm.

A) I'm strongly considering going to all-uniform DP batteries.  This is due to the perceived threats being either daylight torpedo planes, or night time surface torpedo attack lit up by starshell and searchlight with a max range of ~12km+-.  I don't really expect to engage surface ships in daytime with my secondaries.  But I have different weather than the North Sea and the chance of first meeting the enemy at 12km is much lower.

B)  I don't think space is at a premium. This vessel is 231m while the QE's were 193m- 181 between perpendiculars, a concept I'm still hard to figure vs. SS.   So basically 40m/120ft of difference. They had 4T2 381mm, and the refitted ships had 10x twin 5.25", in a single line with a gap- where your 3T2 150mm are. Your 100mm seem to be superimposed inboard. They also had an amidships catapult.  Should be more than enough room. 

[The Rock Doctor]

It's a littorial combat ship!

Other than the wonky and impossible speed requirements of the modern day LCS, I've taken the requirements to be:

-Anti-swarm:  The battery of 100mm and 50mm guns
-Anti-surface:  Two quintuple carriages for 18" torpedoes gives a lot of short-ranged punch
-Minesweeping:  25 t for the basic kit
-ASW:  Sonar and weapons.  Perhaps I'd be better off with enhanced hydrophones but they weigh more.
-Irregular ops:  Accommodation for ten troops to do anti-piracy/smuggling stuff.  I'm not worrying about the cost of boats for them.

To avoid having to constantly pay for refits, I've just assumed all capabilities are installed at construction.  In theory, I suppose the torpedoes and troop areas might be swappable, and the ASW and minesweeping functions also, just based on where in the ship they might be.

Ideally I'd have used diesel machinery for more responsive performance, but the weight penalties would be crippling and we'd end up with an under-armed destroyer.

I have no current need for such a ship, I think, but it was amusing to sim.

LCS, laid down 1931

Displacement:
   1,155 t light; 1,226 t standard; 1,353 t normal; 1,454 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (342.05 ft / 324.80 ft) x 29.53 ft x (11.48 / 12.07 ft)
   (104.26 m / 99.00 m) x 9.00 m  x (3.50 / 3.68 m)

Armament:
      4 - 3.94" / 100 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 400 per gun
     Quick firing guns in deck mounts, 1931 Model
     2 x 2-gun mounts on centreline, forward evenly spread
      1 raised mount
      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, 1931 Model
     2 x Twin mounts on centreline, evenly spread
      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, 1931 Model
     4 x Twin mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 141 lbs / 64 kg

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 30,832 shp / 23,000 Kw = 32.03 kts
   Range 8,000nm at 10.00 kts
   Bunker at max displacement = 228 tons

Complement:
   111 - 145

Cost:
   £0.629 million / $2.516 million

Distribution of weights at normal displacement:
   Armament: 27 tons, 2.0%
      - Guns: 27 tons, 2.0%
   Armour: 13 tons, 1.0%
      - Armament: 13 tons, 1.0%
   Machinery: 686 tons, 50.7%
   Hull, fittings & equipment: 331 tons, 24.5%
   Fuel, ammunition & stores: 198 tons, 14.6%
   Miscellaneous weights: 98 tons, 7.2%
      - Hull below water: 10 tons
      - Hull void weights: 8 tons
      - Hull above water: 20 tons
      - On freeboard deck: 55 tons
      - Above deck: 5 tons

Fittings:
-10 t:  Sonar (BW)
-20 t:  Long-term accommodation for 10 naval infantry; surge capacity for 80 (AW)
-20 t:  2x5 450mm torpedoes (FD)
-25 t:  Minesweeping gear (FD)
-10 t:  ASW gear (FD)
-5 t:  Nightfighting doodads (AD)
-8 t:  Weight reserve (Void)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     339 lbs / 154 Kg = 11.1 x 3.9 " / 100 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.13
   Metacentric height 1.0 ft / 0.3 m
   Roll period: 12.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.25
   Seaboat quality  (Average = 1.00): 0.96

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.430 / 0.440
   Length to Beam Ratio: 11.00 : 1
   'Natural speed' for length: 18.02 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 73
   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%,  20.34 ft / 6.20 m,  16.40 ft / 5.00 m
      - Forward deck:   30.00%,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Aft deck:   35.00%,  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): 174.4%
      - Above water (accommodation/working, high = better): 125.7%
   Waterplane Area: 6,022 Square feet or 560 Square metres
   Displacement factor (Displacement / loading): 67%
   Structure weight / hull surface area: 29 lbs/sq ft or 140 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.59
      - Overall: 0.56
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

[The Rock Doctor]

The 1931 minesweeper is much larger than the preceding type.

This is mostly because it's intended to operate in higher-threat environments such as the western Caribbean, where sweeping outside one's own ports doesn't ensure safety from torpedo-boat or aircraft attack.  Hence the armament is heavier, there's an armor belt, and a protective box over the vitals.

The ship is also fitted with a fairly comprehensive ASW kit, allowing it to take on proper coastal escort duties as required.

Obviously this would be built to military specifications.



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

Displacement:
   759 t light; 799 t standard; 858 t normal; 906 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (217.79 ft / 206.69 ft) x 29.53 ft x (9.84 / 10.25 ft)
   (66.38 m / 63.00 m) x 9.00 m  x (3.00 / 3.12 m)

Armament:
      1 - 3.94" / 100 mm 45.0 cal gun - 30.77lbs / 13.96kg shells, 400 per gun
     Dual purpose gun in deck mount, 1931 Model
     1 x Single mount on centreline amidships (forward deck)
      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, 1931 Model
     2 x Twin mounts on centreline, evenly spread
      2 raised mounts
      4 - 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
     2 x Twin mounts on sides, forward deck centre
      2 double raised mounts
      Weight of broadside 48 lbs / 22 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1.97" / 50 mm   134.35 ft / 40.95 m   11.81 ft / 3.60 m
   Ends:   0.98" / 25 mm     72.31 ft / 22.04 m   11.81 ft / 3.60 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            -
   2nd:   0.59" / 15 mm         -               -
   3rd:   0.59" / 15 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 0.98" / 25 mm
   Forecastle: 0.00" / 0 mm  Quarter deck: 0.98" / 25 mm

   - Conning towers: Forward 1.97" / 50 mm, Aft 0.00" / 0 mm

Machinery:
   Diesel Internal combustion generators,  plus diesel motors,
   Electric motors, 2 shafts, 3,352 shp / 2,500 Kw = 18.60 kts
   Range 5,000nm at 10.00 kts
   Bunker at max displacement = 107 tons

Complement:
   79 - 103

Cost:
   £0.190 million / $0.760 million

Distribution of weights at normal displacement:
   Armament: 10 tons, 1.2%
      - Guns: 10 tons, 1.2%
   Armour: 243 tons, 28.3%
      - Belts: 165 tons, 19.2%
      - Armament: 6 tons, 0.7%
      - Armour Deck: 68 tons, 7.9%
      - Conning Tower: 4 tons, 0.4%
   Machinery: 100 tons, 11.7%
   Hull, fittings & equipment: 211 tons, 24.6%
   Fuel, ammunition & stores: 99 tons, 11.5%
   Miscellaneous weights: 195 tons, 22.7%
      - Hull below water: 80 tons
      - On freeboard deck: 105 tons
      - Above deck: 10 tons

Fittings:
-1 t:  Fire control (AD)
-2 t:  Nightfighting doodads (AD)
-25 t:  Minesweeping gear (FD)
-12 t:  2x DCT-Y and 10t in latest model depth charges
-60 t:  60 mines
-55 t:  D-E machinery (BW)
-25 t:  Sonar and enhanced hydrophone package (BW)
-7+8 t:  Weight reserve (AD/FD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1,664 lbs / 755 Kg = 54.5 x 3.9 " / 100 mm shells or 1.1 torpedoes
   Stability (Unstable if below 1.00): 1.24
   Metacentric height 1.2 ft / 0.4 m
   Roll period: 11.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.09
   Seaboat quality  (Average = 1.00): 1.68

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.507
   Length to Beam Ratio: 7.00 : 1
   'Natural speed' for length: 14.38 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 42
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 3.94 ft / 1.20 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00%,  19.69 ft / 6.00 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%,  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:      12.13 ft / 3.70 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 54.8%
      - Above water (accommodation/working, high = better): 112.8%
   Waterplane Area: 4,066 Square feet or 378 Square metres
   Displacement factor (Displacement / loading): 129%
   Structure weight / hull surface area: 29 lbs/sq ft or 142 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.64
      - Longitudinal: 2.79
      - Overall: 0.75
   Caution: Hull subject to strain in open-sea
   Excellent machinery, storage, compartmentation space
   Adequate 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

[Jefgte]

A small multi-tasking coastal ship is always useful.

;)

[The Rock Doctor]

A simple refit for the monitor Szczyt, which I still don't know how to pronounce.  Basically I'm yanking out two 130mm and the smaller guns, and replacing them with a better AA battery.  Also shifting some miscellaneous weight, adding a bit to use weight savings, and replacing the fire control while I'm at it.

I reckon the simple refit will cost $0.22 and 0.198 BP.

Enter ship name, Enter country Enter ship type laid down 1912 (refit 1931)

Displacement:
   11,108 t light; 11,659 t standard; 12,325 t normal; 12,857 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (404.54 ft / 393.70 ft) x 95.14 ft x (17.72 / 18.37 ft)
   (123.30 m / 120.00 m) x 29.00 m  x (5.40 / 5.60 m)

Armament:
      3 - 13.78" / 350 mm 45.0 cal guns - 1,319.35lbs / 598.45kg shells, 90 per gun
     Breech loading guns in turret on barbette mount, 1912 Model
     1 x Triple mount on centreline, forward deck aft
      1 raised mount
      10 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 150 per gun
     Breech loading guns in deck mounts, 1912 Model
     8 x Single mounts on sides, evenly spread
     2 x Single mounts on sides, aft deck centre
      2 raised mounts
      4 - 3.94" / 100 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 400 per gun
     Anti-air guns in deck mounts, 1912 Model
     4 x Single mounts on sides, aft evenly spread
      4 raised mounts
      6 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1912 Model
     2 x Twin mounts on sides, forward deck aft
     1 x Twin mount on centreline, aft deck centre
      1 double raised mount
      8 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1912 Model
     4 x Twin mounts on sides, evenly spread
      4 double raised mounts
      Weight of broadside 4,783 lbs / 2,170 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7.87" / 200 mm   255.91 ft / 78.00 m   11.81 ft / 3.60 m
   Ends:   3.94" / 100 mm   137.76 ft / 41.99 m   11.81 ft / 3.60 m
   Upper:   3.94" / 100 mm   255.91 ft / 78.00 m   8.53 ft / 2.60 m
     Main Belt covers 100% of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.97" / 50 mm   255.91 ft / 78.00 m   16.99 ft / 5.18 m
   Beam between torpedo bulkheads 88.58 ft / 27.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.8" / 350 mm   7.87" / 200 mm      13.8" / 350 mm
   2nd:   0.98" / 25 mm   0.98" / 25 mm            -
   3rd:   0.79" / 20 mm   0.59" / 15 mm            -
   4th:   0.59" / 15 mm         -               -
   5th:   0.59" / 15 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 1.97" / 50 mm
   Forecastle: 1.18" / 30 mm  Quarter deck: 1.97" / 50 mm

   - Conning towers: Forward 11.81" / 300 mm, Aft 0.00" / 0 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 8,043 shp / 6,000 Kw = 15.56 kts
   Range 6,000nm at 10.00 kts
   Bunker at max displacement = 1,198 tons (45% coal)

Complement:
   584 - 760

Cost:
   £0.845 million / $3.380 million

Distribution of weights at normal displacement:
   Armament: 808 tons, 6.6%
      - Guns: 808 tons, 6.6%
   Armour: 4,155 tons, 33.7%
      - Belts: 1,779 tons, 14.4%
      - Torpedo bulkhead: 317 tons, 2.6%
      - Armament: 907 tons, 7.4%
      - Armour Deck: 1,016 tons, 8.2%
      - Conning Tower: 136 tons, 1.1%
   Machinery: 334 tons, 2.7%
   Hull, fittings & equipment: 5,470 tons, 44.4%
   Fuel, ammunition & stores: 1,217 tons, 9.9%
   Miscellaneous weights: 340 tons, 2.8%
      - On freeboard deck: 100 tons
      - Above deck: 240 tons

Fittings:
-81 t:  1924 Fire control (AD)
-25 t:  L/R wireless (AD)
-100 t:  Command facilities (AD)
-25 t:  Nightfighting doodads (AD)
-80 t:  Classroom facilities (FD)
-9 + 20 t:  Weight reserve (AD/FD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     36,415 lbs / 16,518 Kg = 27.8 x 13.8 " / 350 mm shells or 10.2 torpedoes
   Stability (Unstable if below 1.00): 1.31
   Metacentric height 7.5 ft / 2.3 m
   Roll period: 14.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.39
   Seaboat quality  (Average = 1.00): 1.70

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.650 / 0.654
   Length to Beam Ratio: 4.14 : 1
   'Natural speed' for length: 19.84 kts
   Power going to wave formation at top speed: 42 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 10.00 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%,  24.28 ft / 7.40 m,  24.28 ft / 7.40 m
      - Forward deck:   30.00%,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Aft deck:   35.00%,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Quarter deck:   15.00%,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      17.98 ft / 5.48 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 43.3%
      - Above water (accommodation/working, high = better): 153.5%
   Waterplane Area: 28,695 Square feet or 2,666 Square metres
   Displacement factor (Displacement / loading): 136%
   Structure weight / hull surface area: 164 lbs/sq ft or 801 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.89
      - Longitudinal: 2.81
      - 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

[The Rock Doctor]

In the same vein, simple refit for the two Kopparberg class minelayers.  Yank out the old AA/MG and FC, put in new.  Weirdly enough, I don't need to tap the weight reserve because the old 10mm machine guns were really over-armored and weighed a tonne.

In theory, I could probably up-engine the class to ~31.5 knots and take the hull strength down to 0.75, but I might as well build more new ships than pay through the nose for new engines here.

Cost is $0.03 and 0.024 BP

Kopparberg class minelayer laid down 1915, refit 1931

Displacement:
   2,971 t light; 3,127 t standard; 3,445 t normal; 3,700 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (426.22 ft / 416.01 ft) x 39.37 ft x (16.73 / 17.59 ft)
   (129.91 m / 126.80 m) x 12.00 m  x (5.10 / 5.36 m)

Armament:
      5 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 300 per gun
     Breech loading guns in deck and hoist mounts, 1915 Model
     3 x Single mounts on centreline ends, majority aft
      1 raised mount aft - superfiring
     2 x Single mounts on sides, aft deck centre
      8 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1915 Model
     4 x Twin mounts on sides, evenly spread
      4 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, 1915 Model
     4 x Twin mounts on sides, evenly spread
      4 double raised mounts
      Weight of broadside 372 lbs / 169 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   0.79" / 20 mm      1.97" / 50 mm
   2nd:   0.59" / 15 mm         -               -
   3rd:   0.59" / 15 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 37,533 shp / 28,000 Kw = 29.97 kts
   Range 8,400nm at 10.00 kts
   Bunker at max displacement = 572 tons

Complement:
   224 - 292

Cost:
   £0.491 million / $1.963 million

Distribution of weights at normal displacement:
   Armament: 100 tons, 2.9%
      - Guns: 100 tons, 2.9%
   Armour: 39 tons, 1.1%
      - Armament: 39 tons, 1.1%
   Machinery: 1,417 tons, 41.1%
   Hull, fittings & equipment: 1,147 tons, 33.3%
   Fuel, ammunition & stores: 474 tons, 13.8%
   Miscellaneous weights: 268 tons, 7.8%
      - On freeboard deck: 208 tons
      - Above deck: 60 tons

-10 t:  1924 Fire control (AD)
-25 t:  L/R wireless (AD)
-25 t:  Nightfighting doodads (AD)
-12 t:  2x2 530mm torpedoes, no reloads (FD)
-36 t:  Weight reserve (FD)
-160 t:  Mines (FD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1,885 lbs / 855 Kg = 28.1 x 5.1 " / 130 mm shells or 0.5 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 1.6 ft / 0.5 m
   Roll period: 12.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 51 %
         - Recoil effect (Restricted arc if above 1.00): 0.37
   Seaboat quality  (Average = 1.00): 1.19

Hull form characteristics:
   Hull has low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.440 / 0.449
   Length to Beam Ratio: 10.57 : 1
   'Natural speed' for length: 20.40 kts
   Power going to wave formation at top speed: 58 %
   Trim (Max stability = 0, Max steadiness = 100): 43
   Bow angle (Positive = bow angles forward): 10.00 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%,  20.67 ft / 6.30 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:   40.00%,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Quarter deck:   10.00%,  7.87 ft / 2.40 m,  7.87 ft / 2.40 m
      - Average freeboard:      15.35 ft / 4.68 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 144.3%
      - Above water (accommodation/working, high = better): 138.8%
   Waterplane Area: 10,364 Square feet or 963 Square metres
   Displacement factor (Displacement / loading): 99%
   Structure weight / hull surface area: 61 lbs/sq ft or 297 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.82
      - Longitudinal: 1.92
      - Overall: 0.90
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room

[The Rock Doctor]

Updating the Type 1913 minesweepers is apparently a refurbishment since I'm installing an enhanced hydrophone package on each hull.  I had over-allocated weight for the minesweeping kit previously, so what we have here is new AA/MG, the EHP, some ASW capability, and updated fire control, such as it is.

Cost is $0.15 and 0.062 per unit, eighteen units in total.  They'll need around a month and a half in drydock but I've got enough idle to get that done, even it if means a few have to share larger facilities.

Enter ship name, Enter country Enter ship type laid down 1913, refit 1931

Displacement:
   422 t light; 443 t standard; 526 t normal; 592 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (170.29 ft / 163.71 ft) x 31.17 ft x (6.56 / 7.21 ft)
   (51.91 m / 49.90 m) x 9.50 m  x (2.00 / 2.20 m)

Armament:
      1 - 3.94" / 100 mm 45.0 cal gun - 30.77lbs / 13.96kg shells, 150 per gun
     Breech loading gun in deck mount, 1913 Model
     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, 1913 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, 5,000 per gun
     Machine guns in deck mounts, 1913 Model
     2 x Twin mounts on sides, forward deck aft
      2 raised mounts
      Weight of broadside 40 lbs / 18 kg

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

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 1,005 ihp / 750 Kw = 14.23 kts
   Range 4,000nm at 10.00 kts
   Bunker at max displacement = 149 tons (100% coal)

Complement:
   54 - 71

Cost:
   £0.029 million / $0.115 million

Distribution of weights at normal displacement:
   Armament: 7 tons, 1.4%
      - Guns: 7 tons, 1.4%
   Armour: 7 tons, 1.3%
      - Armament: 7 tons, 1.3%
   Machinery: 66 tons, 12.6%
   Hull, fittings & equipment: 234 tons, 44.6%
   Fuel, ammunition & stores: 104 tons, 19.8%
   Miscellaneous weights: 107 tons, 20.3%
      - Hull below water: 15 tons
      - On freeboard deck: 82 tons
      - Above deck: 10 tons

Fittings:
-15t:  Enhanced hydrophone package (BW)
-25 t:  Minesweeping kit (FD)
-17 t:  ASW gear (2 DCT-Y and 15 t of latest DCs) (FD)
-40 t:  Mine capacity (FD)
-1 t:  1924 fire control (AD)
-2 t:  Spotlight(s) (AD)
-7 t:  Weight reserve (AD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1,972 lbs / 895 Kg = 64.6 x 3.9 " / 100 mm shells or 1.2 torpedoes
   Stability (Unstable if below 1.00): 1.41
   Metacentric height 1.6 ft / 0.5 m
   Roll period: 10.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.07
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.550 / 0.563
   Length to Beam Ratio: 5.25 : 1
   'Natural speed' for length: 12.80 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 35
   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%,  18.70 ft / 5.70 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%,  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:      12.05 ft / 3.67 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 51.1%
      - Above water (accommodation/working, high = better): 144.6%
   Waterplane Area: 3,561 Square feet or 331 Square metres
   Displacement factor (Displacement / loading): 196%
   Structure weight / hull surface area: 42 lbs/sq ft or 205 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 6.00
      - Overall: 1.17
   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

[The Rock Doctor]

There is not a lot of room to improve the korsarz Orzel without a substantial investment.  Deck space is very limited due to carrying of MTBs, in particular.

The substantial investment would be a refurbishment adding new geared machinery for an additional knot of speed, plus accommodation for a company of naval infantry.  That would cost $3.65 and 1.365 BP (less the cost of scrapped old machinery), or more than the initial cash cost of the ship.  New AA guns would also be fitted.  The important part of the refurb is the ability to carry and land the company of troops, which the ship is not currently capable of doing.

Alternately, I would just do a simple refit and add new AA and update FC.  The cost is a mere $0.02 and 0.015 BP.

The refurb version is posted below; the refit option would have identical armament but original performance.

Edit:  I see I failed to toggle the "geared" machinery, but that has no other impact on the sim itself.


Enter ship name, Enter country Enter ship type laid down 1914 (Engine 1931)

Displacement:
   3,622 t light; 3,746 t standard; 3,994 t normal; 4,193 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (436.95 ft / 426.51 ft) x 45.93 ft x (14.27 / 14.80 ft)
   (133.18 m / 130.00 m) x 14.00 m  x (4.35 / 4.51 m)

Armament:
      3 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 250 per gun
     Quick firing guns in deck and hoist mounts, 1914 Model
     3 x Single mounts on centreline ends, majority forward
      1 raised mount - superfiring
      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, 1914 Model
     1 x Twin mount on centreline, aft deck centre
      1 raised mount
     2 x Single mounts on sides, forward deck aft
      6 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1914 Model
     1 x Twin mount on centreline, aft deck forward
      1 raised mount
     2 x Twin mounts on sides, forward deck centre
      2 raised mounts
      Weight of broadside 220 lbs / 100 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm   0.39" / 10 mm      1.97" / 50 mm
   2nd:   0.59" / 15 mm         -               -
   3rd:   0.59" / 15 mm         -               -

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

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 44,235 shp / 33,000 Kw = 30.21 kts
   Range 8,000nm at 10.00 kts
   Bunker at max displacement = 447 tons

Complement:
   250 - 326

Cost:
   £0.424 million / $1.694 million

Distribution of weights at normal displacement:
   Armament: 60 tons, 1.5%
      - Guns: 60 tons, 1.5%
   Armour: 36 tons, 0.9%
      - Armament: 14 tons, 0.4%
      - Conning Tower: 21 tons, 0.5%
   Machinery: 1,323 tons, 33.1%
   Hull, fittings & equipment: 1,387 tons, 34.7%
   Fuel, ammunition & stores: 372 tons, 9.3%
   Miscellaneous weights: 816 tons, 20.4%
      - Hull below water: 100 tons
      - Hull above water: 300 tons
      - On freeboard deck: 360 tons
      - Above deck: 56 tons

-96 t:  12 missions worth of MTB ammo/fuel (2 x18" torpedo & 4 t fuel per boat-mission) (BW)
-300 t:  Accommodation for 150 personnel (Some combo of up to 120 naval infantry, 18 landing craft crew, and/or 36 MTB personnel (AW)
-360 t:  6 x 20 t MTB, cradle, and cranes (FD)
-25 t:  Night-fighting doodads (AD)
-25 t:  L/R wireless (AD)
-6 t:  1908 Fire Control (AD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3,226 lbs / 1,463 Kg = 48.1 x 5.1 " / 130 mm shells or 0.8 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 1.9 ft / 0.6 m
   Roll period: 14.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 62 %
         - Recoil effect (Restricted arc if above 1.00): 0.17
   Seaboat quality  (Average = 1.00): 1.13

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.506
   Length to Beam Ratio: 9.29 : 1
   'Natural speed' for length: 20.65 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 55
   Bow angle (Positive = bow angles forward): 10.00 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%,  21.98 ft / 6.70 m,  17.06 ft / 5.20 m
      - Forward deck:   30.00%,  17.06 ft / 5.20 m,  17.06 ft / 5.20 m
      - Aft deck:   35.00%,  17.06 ft / 5.20 m,  17.06 ft / 5.20 m
      - Quarter deck:   15.00%,  17.06 ft / 5.20 m,  17.06 ft / 5.20 m
      - Average freeboard:      17.45 ft / 5.32 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 123.9%
      - Above water (accommodation/working, high = better): 169.7%
   Waterplane Area: 13,053 Square feet or 1,213 Square metres
   Displacement factor (Displacement / loading): 108%
   Structure weight / hull surface area: 64 lbs/sq ft or 310 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.84
      - Longitudinal: 1.89
      - Overall: 0.91
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room

[The Rock Doctor]

The Rosadny class depot ships were hastily built as the Union was just winding up to colonize stuff.  They aren't great - definitely slow, as seen when they lagged behind the World Cruise Squadron in 1921 or 1923 or whenever.

And while I gave thought to re-engining them with electric drive, the cash cost of the refurb is kind of high for a ship of its capability - especially when I'd only be bumping it up to 14 knots with the new machinery anyway.

But once they're at a place, they can support 28,000 t of friendly shipping and that's the important thing.

So it's new armament, new fire control, and that's it.  Cost of that would be $0.04 and 0.026 BP for that work.

Enter ship name, Enter country Enter ship type laid down 1912, refit 1931

Displacement:
   4,480 t light; 4,615 t standard; 5,247 t normal; 5,752 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (338.70 ft / 328.08 ft) x 65.62 ft x (13.12 / 14.20 ft)
   (103.23 m / 100.00 m) x 20.00 m  x (4.00 / 4.33 m)

Armament:
      2 - 3.94" / 100 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 400 per gun
     Dual purpose guns in deck mounts, 1912 Model
     2 x Single mounts on centreline ends, evenly spread
      2 raised mounts
      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, 1912 Model
     2 x Twin mounts on centreline, forward deck aft
      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, 1912 Model
     4 x Twin mounts on sides, evenly spread
      4 double raised mounts
      Weight of broadside 79 lbs / 36 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:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 2,010 ihp / 1,500 Kw = 12.19 kts
   Range 8,000nm at 10.00 kts
   Bunker at max displacement = 1,137 tons (90% coal)

Complement:
   307 - 400

Cost:
   £0.180 million / $0.720 million

Distribution of weights at normal displacement:
   Armament: 17 tons, 0.3%
      - Guns: 17 tons, 0.3%
   Armour: 7 tons, 0.1%
      - Armament: 7 tons, 0.1%
   Machinery: 132 tons, 2.5%
   Hull, fittings & equipment: 1,463 tons, 27.9%
   Fuel, ammunition & stores: 767 tons, 14.6%
   Miscellaneous weights: 2,861 tons, 54.5%
      - Hull below water: 900 tons
      - Hull above water: 1,000 tons
      - On freeboard deck: 911 tons
      - Above deck: 50 tons

Fittings:
-2,800 t:  Support for 28,000 t of shipping (BW/AW/FD)
-25 t:  L/R wireless (AD)
-2 t:  1924 fire control (AD)
-11 + 23 t:  Weight reserve (FD/AD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     14,939 lbs / 6,776 Kg = 489.6 x 3.9 " / 100 mm shells or 3.2 torpedoes
   Stability (Unstable if below 1.00): 1.47
   Metacentric height 5.2 ft / 1.6 m
   Roll period: 12.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.01
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has raised forecastle, raised quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.650 / 0.659
   Length to Beam Ratio: 5.00 : 1
   'Natural speed' for length: 18.11 kts
   Power going to wave formation at top speed: 32 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 10.00 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%,  22.97 ft / 7.00 m,  22.97 ft / 7.00 m
      - Forward deck:   30.00%,  15.09 ft / 4.60 m,  15.09 ft / 4.60 m
      - Aft deck:   35.00%,  15.09 ft / 4.60 m,  15.09 ft / 4.60 m
      - Quarter deck:   15.00%,  22.97 ft / 7.00 m,  22.97 ft / 7.00 m
      - Average freeboard:      17.85 ft / 5.44 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 50.0%
      - Above water (accommodation/working, high = better): 154.4%
   Waterplane Area: 16,492 Square feet or 1,532 Square metres
   Displacement factor (Displacement / loading): 165%
   Structure weight / hull surface area: 67 lbs/sq ft or 326 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 2.13
      - 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

[The Rock Doctor]

Yet more tweaking on the 1931 battleship.

The secondaries are re-sized:  I found a good drawing of Bismarck, measured its 150mm turrets, and applied that here.  They're smaller than I had them before.

I've also plunked a couple in double-superfiring centreline positions.  This required a bit more length on the ship, so it's a little more than 9 turns of building as I'd originally intended.  That allows the rest of the armament to be laid out in a fairly symmetrical disposition, which is pleasing.

A crude plan view, which I won't share, suggests things will fit as illustrated.  There's undoubtedly space to jam in more light guns when experience shows it is necessary.

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

Displacement:
   45,583 t light; 48,067 t standard; 51,028 t normal; 53,396 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (785.38 ft / 767.72 ft) x 108.27 ft (Bulges 114.83 ft) x (31.17 / 32.47 ft)
   (239.38 m / 234.00 m) x 33.00 m (Bulges 35.00 m)  x (9.50 / 9.90 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, 1931 Model
     4 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      12 - 5.91" / 150 mm 50.0 cal guns - 121.25lbs / 55.00kg shells, 250 per gun
     Breech loading guns in turret on barbette mounts, 1931 Model
     4 x 2-gun mounts on side ends, evenly spread
     2 x 2-gun mounts on centreline, evenly spread
      2 double raised mounts
      16 - 3.94" / 100 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 400 per gun
     Anti-air guns in deck mounts, 1931 Model
     8 x Twin mounts on side ends, evenly spread
      8 raised mounts
      20 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.90kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1931 Model
     2 x Twin mounts on centreline, evenly spread
     8 x Twin mounts on sides, evenly spread
      4 double 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, 1931 Model
     8 x Twin mounts on sides, evenly spread
      8 double raised mounts
      Weight of broadside 21,434 lbs / 9,722 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.8" / 350 mm   499.02 ft / 152.10 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   499.02 ft / 152.10 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
   2nd:   4.72" / 120 mm   1.97" / 50 mm      3.94" / 100 mm
   3rd:   0.79" / 20 mm   0.79" / 20 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, 120,643 shp / 90,000 Kw = 27.04 kts
   Range 20,000nm at 10.00 kts
   Bunker at max displacement = 5,329 tons

Complement:
   1,696 - 2,206

Cost:
   £17.374 million / $69.497 million

Distribution of weights at normal displacement:
   Armament: 4,169 tons, 8.2%
      - Guns: 4,169 tons, 8.2%
   Armour: 19,653 tons, 38.5%
      - Belts: 4,872 tons, 9.5%
      - Torpedo bulkhead: 1,631 tons, 3.2%
      - Bulges: 291 tons, 0.6%
      - Armament: 4,568 tons, 9.0%
      - Armour Deck: 7,824 tons, 15.3%
      - Conning Tower: 467 tons, 0.9%
   Machinery: 3,608 tons, 7.1%
   Hull, fittings & equipment: 17,211 tons, 33.7%
   Fuel, ammunition & stores: 5,445 tons, 10.7%
   Miscellaneous weights: 942 tons, 1.8%
      - On freeboard deck: 242 tons
      - Above deck: 700 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     85,142 lbs / 38,620 Kg = 43.6 x 15.7 " / 400 mm shells or 16.1 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 6.8 ft / 2.1 m
   Roll period: 18.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.71
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.650 / 0.653
   Length to Beam Ratio: 6.69 : 1
   'Natural speed' for length: 27.71 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   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%,  30.51 ft / 9.30 m,  23.62 ft / 7.20 m
      - Forward deck:   40.00%,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
      - Aft deck:   25.00%,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
      - Quarter deck:   15.00%,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
      - Average freeboard:      24.17 ft / 7.37 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 76.1%
      - Above water (accommodation/working, high = better): 168.9%
   Waterplane Area: 63,674 Square feet or 5,916 Square metres
   Displacement factor (Displacement / loading): 112%
   Structure weight / hull surface area: 216 lbs/sq ft or 1,053 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.29
      - 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

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

[TacCovert4]

The double secondary is interesting.   In our meta it makes more sense than historically.   I'm actually starting to wonder if my own 120/55 dp secondary is going to be inadequate on a BB.  I might have to look at a 140mm gun, or doing an intermediate battery of 180s to deal with cruisers and middling sized ships, rather than have a 120mm to 450mm gap.

[The Rock Doctor]

Assuming everything goes to plan - an assumption - these guys would be completed in 1935/6 and likely spend their careers primarily based in European waters.  There, in theory, weather conditions might support the mixed battery.

Then, ten years later, they're essentially obsolete in the face of aircraft carriers and it doesn't much matter.