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

[The Rock Doctor]

A gunship for evaluation of the 4-gun 150mm/50 mount.  It is essentially a pair of 2-gun mounts, examples of which can be found on a range of Union capital ships, cruisers, and gunships.  The Union is now contemplating future cruisers armed with three or four 4-gun mountings but is a bit hesitant to commit without understanding how the 4-gun is going to work from a reliability perspective and, to a lesser degree, in terms of things like traverse speed.

A small, chunky hull with some basic point-defence AA will allow for a prototype to be put into service for trials within a year of laying down.  She has heavier armor than the Rysy class gunships, but does not embark an aircraft.

If not a total disaster, she'd subsequently be deployed overseas somewhere, perhaps Srebrny Rzeki where her shallow draft would be useful in the Rio Plata estuary. 



Enter ship name, Enter country Enter ship type laid down 1936

Displacement:
   2,961 t light; 3,141 t standard; 3,634 t normal; 4,028 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (279.74 ft / 265.75 ft) x 62.34 ft x (11.81 / 12.90 ft)
   (85.27 m / 81.00 m) x 19.00 m  x (3.60 / 3.93 m)

Armament:
      4 - 5.91" / 150 mm 50.0 cal guns - 121.25lbs / 55.00kg shells, 250 per gun
     Breech loading guns in turret on barbette mount, 1936 Model
     1 x 4-gun mount on centreline, forward deck aft
      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, 1936 Model
     2 x Twin mounts on sides, aft deck centre
     2 x Twin mounts on centreline, aft evenly spread
      1 raised mount
      8 - 0.98" / 25.0 mm 70.0 cal guns - 0.53lbs / 0.24kg shells, 5,000 per gun
     Machine guns in deck mounts, 1936 Model
     4 x Twin mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 523 lbs / 237 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2.95" / 75 mm   172.74 ft / 52.65 m   16.37 ft / 4.99 m
   Ends:   0.98" / 25 mm     92.98 ft / 28.34 m   16.37 ft / 4.99 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5.91" / 150 mm   1.97" / 50 mm      3.94" / 100 mm
   2nd:   0.59" / 15 mm   0.12" / 3 mm            -
   3rd:   0.59" / 15 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 1.97" / 50 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 1.97" / 50 mm

   - Conning towers: Forward 2.95" / 75 mm, Aft 0.00" / 0 mm

Machinery:
   Diesel Internal combustion generators,  plus diesel motors,
   Electric motors, 2 shafts, 12,064 shp / 9,000 Kw = 20.05 kts
   Range 6,000nm at 15.00 kts
   Bunker at max displacement = 888 tons

Complement:
   233 - 304

Cost:
   £1.054 million / $4.217 million

Distribution of weights at normal displacement:
   Armament: 148 tons, 4.1 %
      - Guns: 148 tons, 4.1 %
   Armour: 1,006 tons, 27.7 %
      - Belts: 452 tons, 12.4 %
      - Armament: 94 tons, 2.6 %
      - Armour Deck: 445 tons, 12.3 %
      - Conning Tower: 15 tons, 0.4 %
   Machinery: 339 tons, 9.3 %
   Hull, fittings & equipment: 990 tons, 27.2 %
   Fuel, ammunition & stores: 673 tons, 18.5 %
   Miscellaneous weights: 479 tons, 13.2 %
      - Hull below water: 202 tons
      - Hull above water: 81 tons
      - On freeboard deck: 96 tons
      - Above deck: 100 tons
Fittings:
-diesel-electric drive and enhanced hydrophones BW
-torpedo nets above water
-weight reserve and perhaps flag/training facilities on freeboard
-L/R wireless, FC, huelsmeyer, and nightfighting doodads above deck

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8,600 lbs / 3,901 Kg = 83.5 x 5.9 " / 150 mm shells or 2.5 torpedoes
   Stability (Unstable if below 1.00): 1.24
   Metacentric height 3.6 ft / 1.1 m
   Roll period: 13.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.22
   Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
   Hull has low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.650 / 0.660
   Length to Beam Ratio: 4.26 : 1
   'Natural speed' for length: 16.30 kts
   Power going to wave formation at top speed: 65 %
   Trim (Max stability = 0, Max steadiness = 100): 84
   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 %,  24.93 ft / 7.60 m,  21.00 ft / 6.40 m
      - Forward deck:   30.00 %,  21.00 ft / 6.40 m,  21.00 ft / 6.40 m
      - Aft deck:   35.00 %,  21.00 ft / 6.40 m,  21.00 ft / 6.40 m
      - Quarter deck:   15.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Average freeboard:      20.13 ft / 6.14 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 54.2 %
      - Above water (accommodation/working, high = better): 217.8 %
   Waterplane Area: 12,690 Square feet or 1,179 Square metres
   Displacement factor (Displacement / loading): 138 %
   Structure weight / hull surface area: 61 lbs/sq ft or 299 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.63
      - Longitudinal: 3.37
      - Overall: 0.75
   Caution: Hull subject to strain in open-sea
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

[The Rock Doctor]

Sketch of the gunship, which I need to select a name for.

[The Rock Doctor]

A wee coastal tanker that might be used to run fuel oil, diesel, or even water (if needed, after a cleaning) between ports in the same general area.

There's a couple machine guns for emergencies but that's pretty much it.



Enter ship name, Enter country Enter ship type laid down 1936

Displacement:
   635 t light; 648 t standard; 661 t normal; 672 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (155.86 ft / 147.64 ft) x 26.25 ft x (9.19 / 9.31 ft)
   (47.51 m / 45.00 m) x 8.00 m  x (2.80 / 2.84 m)

Armament:
      2 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 2,000 per gun
     Machine guns in deck mounts, 1936 Model
     2 x Single mounts on sides, aft deck aft
      2 raised mounts
      Weight of broadside 0 lbs / 0 kg

Machinery:
   Diesel Internal combustion motors,  plus diesel motors,
   Geared drive, 1 shaft, 670 shp / 500 Kw = 12.27 kts
   Range 1,000nm at 10.00 kts
   Bunker at max displacement = 24 tons

Complement:
   64 - 84

Cost:
   £0.131 million / $0.526 million

Distribution of weights at normal displacement:
   Armament: 0 tons, 0.0 %
      - Guns: 0 tons, 0.0 %
   Machinery: 19 tons, 2.8 %
   Hull, fittings & equipment: 158 tons, 24.0 %
   Fuel, ammunition & stores: 27 tons, 4.0 %
   Miscellaneous weights: 457 tons, 69.1 %
      - Hull below water: 226 tons
      - Hull above water: 220 tons
      - On freeboard deck: 11 tons

Fittings:
-6 t:  Diesel engine
-440 t:  Liquid cargo (BW/AW)
-10 t:  Loading/unload gear (FD)
-1 t:  Weight reserve

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     917 lbs / 416 Kg = 8,904.6 x 0.6 " / 15 mm shells or 0.6 torpedoes
   Stability (Unstable if below 1.00): 1.34
   Metacentric height 1.1 ft / 0.3 m
   Roll period: 10.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.00
   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 / 0.651
   Length to Beam Ratio: 5.63 : 1
   'Natural speed' for length: 12.15 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 35
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 4.92 ft / 1.50 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  18.70 ft / 5.70 m,  15.75 ft / 4.80 m
      - Forward deck:   30.00 %,  7.87 ft / 2.40 m,  7.87 ft / 2.40 m
      - Aft deck:   30.00 %,  7.87 ft / 2.40 m,  7.87 ft / 2.40 m
      - Quarter deck:   20.00 %,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Average freeboard:      11.26 ft / 3.43 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 83.1 %
      - Above water (accommodation/working, high = better): 68.6 %
   Waterplane Area: 2,927 Square feet or 272 Square metres
   Displacement factor (Displacement / loading): 133 %
   Structure weight / hull surface area: 30 lbs/sq ft or 144 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.83
      - Longitudinal: 5.24
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Cramped 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]

This is pretty much a mobile flak-trap, intended for screening coastal traffic/ports/beachheads from unfriendly air attack. 

It would probably be a bit crowded with some many gunners aboard, but SS likes it.

There's an extremely limited ASW capability just in case a sub wanders into view.



Enter ship name, Enter country Enter ship type laid down 1936

Displacement:
   376 t light; 406 t standard; 455 t normal; 495 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (163.15 ft / 154.20 ft) x 26.25 ft x (7.87 / 8.39 ft)
   (49.73 m / 47.00 m) x 8.00 m  x (2.40 / 2.56 m)

Armament:
      2 - 2.95" / 75.0 mm 45.0 cal guns - 12.98lbs / 5.89kg shells, 400 per gun
     Dual purpose guns in deck mounts, 1936 Model
     2 x Single mounts on centreline, evenly spread
      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, 1936 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, 1936 Model
     2 x Twin mounts on sides amidships
      2 raised mounts
      Weight of broadside 43 lbs / 20 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   0.98" / 25 mm   100.23 ft / 30.55 m   11.81 ft / 3.60 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.59" / 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: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

Machinery:
   Diesel Internal combustion generators,  plus diesel motors,
   Electric motors, 2 shafts, 2,413 shp / 1,800 Kw = 18.12 kts
   Range 2,000nm at 15.00 kts
   Bunker at max displacement = 89 tons

Complement:
   49 - 64

Cost:
   £0.134 million / $0.535 million

Distribution of weights at normal displacement:
   Armament: 10 tons, 2.2 %
      - Guns: 10 tons, 2.2 %
   Armour: 106 tons, 23.2 %
      - Belts: 51 tons, 11.2 %
      - Armament: 5 tons, 1.2 %
      - Armour Deck: 49 tons, 10.9 %
   Machinery: 68 tons, 14.9 %
   Hull, fittings & equipment: 115 tons, 25.2 %
   Fuel, ammunition & stores: 79 tons, 17.4 %
   Miscellaneous weights: 78 tons, 17.1 %
      - Hull below water: 56 tons
      - On freeboard deck: 19 tons
      - Above deck: 3 tons

Fittings:
-41 t:  Diesel-electric engines (BW)
-15 t:  Enhanced hydrophones (BW)
-5 t:  ASW munitions (FD)
-14 t:  Weight reserve I guess (FD)
-3 t:  Fire control and a couple searchlights (AD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     706 lbs / 320 Kg = 54.9 x 3.0 " / 75 mm shells or 0.6 torpedoes
   Stability (Unstable if below 1.00): 1.22
   Metacentric height 1.0 ft / 0.3 m
   Roll period: 11.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.16
   Seaboat quality  (Average = 1.00): 1.38

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.510
   Length to Beam Ratio: 5.88 : 1
   'Natural speed' for length: 12.42 kts
   Power going to wave formation at top speed: 67 %
   Trim (Max stability = 0, Max steadiness = 100): 74
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 3.94 ft / 1.20 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  13.78 ft / 4.20 m,  11.81 ft / 3.60 m
      - Forward deck:   20.00 %,  11.81 ft / 3.60 m,  9.84 ft / 3.00 m
      - Aft deck:   45.00 %,  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:      10.59 ft / 3.23 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 72.5 %
      - Above water (accommodation/working, high = better): 106.3 %
   Waterplane Area: 2,697 Square feet or 251 Square metres
   Displacement factor (Displacement / loading): 132 %
   Structure weight / hull surface area: 25 lbs/sq ft or 123 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.62
      - Longitudinal: 4.03
      - 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
   Good seaboat, rides out heavy weather easily

41 for diesel
15 for ehp

[The Rock Doctor]

Thinking about disaster relief in the hurricane-ravaged Caribbean, the Union came to the following thinking:

-Its amphibious forces (seen out-of-game as Deployment Points, but in-game probably attack transports and landing ships) can do most of the job of delivering emergency people and supplies to damaged areas.

-Its hospital ship can do the job of mending people AND army field hospitals can be delivered by the aforementioned amphibious forces - though there is an identified interest in obtaining at least one more hospital ship just in case.

So maybe there's a niche for a Utility Ship whose job is literally to supply utilities:  Namely electricity and potable water.  Notionally the ship rolls up to shore - or as close to it as possible, depending on the state of the anchorage - and takes over supply of these utilities to a town until its own utilities have been repaired.

The powerplant isn't huge, but running at half power (2,500 Kw) would provide more power than a Canadian National locomotive (1,790 Kw) did when it was used as an emergency generator in the 1998 North American Ice Storm.  Figure it's enough to power essential services in a small hospital, perhaps, I dunno. 

The water distillation plant is total guesswork, but I took the total machinery weight of a historical USN distillation ship and assigned it as miscellaneous weight here.  Also added some storage capacity - ideally the ship arrives at its destination having already loaded up beforehand.

The wireless capability is fitted under the assumption that if a community has lost its electrical grid and water plant, its telephone connections are probably also in bad shape.

Extra accommodation, boats, and the vehicle park are about providing a shore party that can repair or run power cable and heavy hose to link the ship's output to wherever functional utilities start, including the ability to do some limited fixing.

The vehicle load would likely include the equivalent of a modern line-team with bucket trucks, cargo trucks, backhoe, and so on to re-do powerlines, and water tank trucks and so on for the water guys.  The vehicle park is on the centreline, amidships, above the waterline as was done with historical LSTs, and a single elevator lifts them up to the main deck either to be driven onto an adjacent pier or loaded back down into a landing craft. I considered a bow door/ramp but wasn't sure how we'd model that or if LSTs are valid under currently available tech.

The armament is extremely limited as it's not viewed as being in combat situations.  A couple AA guns are handy, and the machine-guns can ensure local security.

Does it all make sense?  I dunno.  But the cost of a mercantile build is less than 0.7 BP so it's fun enough to go ahead with.



Enter ship name, Enter country Enter ship type laid down 1936

Displacement:
   2,452 t light; 2,523 t standard; 2,791 t normal; 3,006 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (320.07 ft / 311.68 ft) x 52.49 ft x (9.19 / 9.79 ft)
   (97.56 m / 95.00 m) x 16.00 m  x (2.80 / 2.98 m)

Armament:
      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, 1936 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, 1936 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 17 lbs / 8 kg

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

Machinery:
   Diesel Internal combustion generators,  plus diesel motors,
   Electric motors, 2 shafts, 6,703 shp / 5,000 Kw = 18.57 kts
   Range 4,000nm at 15.00 kts
   Bunker at max displacement = 483 tons

Complement:
   191 - 249

Cost:
   £0.599 million / $2.396 million

Distribution of weights at normal displacement:
   Armament: 5 tons, 0.2 %
      - Guns: 5 tons, 0.2 %
   Armour: 4 tons, 0.2 %
      - Armament: 4 tons, 0.2 %
   Machinery: 188 tons, 6.7 %
   Hull, fittings & equipment: 972 tons, 34.8 %
   Fuel, ammunition & stores: 339 tons, 12.2 %
   Miscellaneous weights: 1,283 tons, 46.0 %
      - Hull below water: 554 tons
      - Hull above water: 320 tons
      - On freeboard deck: 300 tons
      - Above deck: 109 tons

Fittings:
-104 t:  Diesel-electric machinery (BW)
-150 t:  Water distillation plant (75 t for 2,000 Kw machinery + the same for condensors and shit)
-200 t:  Water storage (BW)
-100 t:  Bulk cargo and vehicle fuel (BW)
-120 t:  Accommodation for sixty mission personnel  (AW)
-200 t:  Vehicle park (AW)
-100 t:  Extra boats including two landing craft in davits (FD)
-100 t:  Cranes and vehicle deck elevator (FD)
-20 t:  Ship-to-shore connections for water and electricity (FD)
-80 t:  Deck cargo/weight reserve (FD)
-35 t:  L/R and extra S/R wireless (AD)
-5 t:  Lights (AD)
-1 t:  Fire control (AD)
-50 t:  Working space (AD)
-18 t:  Weight reserve (AD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8,363 lbs / 3,793 Kg = 2,192.8 x 2.0 " / 50 mm shells or 2.1 torpedoes
   Stability (Unstable if below 1.00): 1.33
   Metacentric height 3.2 ft / 1.0 m
   Roll period: 12.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.01
   Seaboat quality  (Average = 1.00): 1.62

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.650 / 0.657
   Length to Beam Ratio: 5.94 : 1
   'Natural speed' for length: 17.65 kts
   Power going to wave formation at top speed: 51 %
   Trim (Max stability = 0, Max steadiness = 100): 63
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 4.92 ft / 1.50 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  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 %,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Quarter deck:   15.00 %,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Average freeboard:      16.06 ft / 4.90 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 57.9 %
      - Above water (accommodation/working, high = better): 196.8 %
   Waterplane Area: 12,534 Square feet or 1,164 Square metres
   Displacement factor (Displacement / loading): 166 %
   Structure weight / hull surface area: 57 lbs/sq ft or 280 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 1.95
      - 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]

A new hospital ship to complement the existing, twelve year-old Jacek Odrowaz.  It's a bit longer and a tiny bit deeper than her predecessor. 

The design closely follows the older ship.  Above deck, the slightly longer hull allows for a third pair of elevators to alleviate traffic congestion and provides additional working space for the medical team.  Below the waterline, the additional volume allows for more bunkerage.

Feedback from medical staff embarked on the Odrowaz was that after a twelve hours shift, they'd rather have more comfortable sleeping quarters than copious amenities like theatres, libraries, and such.  Consequently, the latter have been scaled back a bit and the staff have 2.5 t for each person's accommodations rather than the 2.0 t on Odrowaz. 

One unit is anticipated, and it would like be deployed into the Caribbean such that one of the two hospital ships was on active duty at all times and the second would come out of reserve during the standard hurricane season (and as otherwise required).



Enter ship name, Enter country Enter ship type laid down 1936

Displacement:
   7,708 t light; 7,875 t standard; 8,362 t normal; 8,751 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (426.40 ft / 410.11 ft) x 65.62 ft x (16.73 / 17.39 ft)
   (129.97 m / 125.00 m) x 20.00 m  x (5.10 / 5.30 m)

Machinery:
   Diesel Internal combustion generators,
   Electric motors, 2 shafts, 12,065 shp / 9,000 Kw = 18.81 kts
   Range 4,000nm at 15.00 kts
   Bunker at max displacement = 876 tons

Complement:
   436 - 568

Cost:
   £1.672 million / $6.689 million

Distribution of weights at normal displacement:
   Armament: 0 tons, 0.0 %
   Machinery: 339 tons, 4.0 %
   Hull, fittings & equipment: 2,406 tons, 28.8 %
   Fuel, ammunition & stores: 654 tons, 7.8 %
   Miscellaneous weights: 4,964 tons, 59.4 %
      - Hull below water: 786 tons
      - Hull above water: 2,400 tons
      - On freeboard deck: 600 tons
      - Above deck: 1,178 tons

Fittings:
-186 t:  D-E machinery (BW)
-400 t:  Dry and wet stores (BW)
-200 t:  Water distallation plant and storage (BW)
-2,400 t:  Wards for 800 patients (AW)
-100 t:  Boats and cranes (FD)
-500 t:  Triage area, general hospital facilities, labs/pharmacy, five operating theatres (FD)
-1,000 t:  Accommodation for 400 staff (AD)
-100 t:  Staff and patient amenities (AD)
-35 t:  L/R and redundant S/R wireless (AD)
-43 t:  Weight reserve


Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     21,253 lbs / 9,640 Kg = 196.8 x 6 " / 152 mm shells or 3.2 torpedoes
   Stability (Unstable if below 1.00): 1.14
   Metacentric height 3.4 ft / 1.0 m
   Roll period: 15.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 90 %
         - Recoil effect (Restricted arc if above 1.00): 0.00
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has low quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.650 / 0.654
   Length to Beam Ratio: 6.25 : 1
   'Natural speed' for length: 20.25 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 45
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 5.91 ft / 1.80 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  28.54 ft / 8.70 m,  23.62 ft / 7.20 m
      - Forward deck:   30.00 %,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
      - Aft deck:   25.00 %,  23.62 ft / 7.20 m,  23.62 ft / 7.20 m
      - Quarter deck:   25.00 %,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Average freeboard:      22.05 ft / 6.72 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 55.6 %
      - Above water (accommodation/working, high = better): 212.7 %
   Waterplane Area: 20,614 Square feet or 1,915 Square metres
   Displacement factor (Displacement / loading): 148 %
   Structure weight / hull surface area: 79 lbs/sq ft or 387 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.91
      - Longitudinal: 2.21
      - 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, rides out heavy weather easily

[The Rock Doctor]

Playing around with the 1919 Czarownik class cruisers of the line (39,000 t, 8x400mm, 30 kts), I see I can go in a couple of directions with a refurbishment:

1)  Re-engine the ship up to 32 knots and 8000nm @ 15 kts, which is handy if I want to attach one to a carrier group, or

2)  Re-engine the ship to the existing 30 knots, with 8000 nm @ 15 kts, but laminate the deck armor amidships to 140mm.  This is good for resisting heavy shells and bombs, but less ideal for carrier escort functions.

There's undoubtedly a middle ground where I get 31 knots and 120mm deck armor as well.

[Kaiser Kirk]

Well, did it again. Posted a long reply, hit post, and changed pages....not scrolling down to find the post timed out and I have to hit post again.

Summary :
Missed 3T -> 2G discussion above.
Yes, ROF by slide/sleeve is discussed in ship design thread and used.
Yes, weights vary by slide/sleeve, 'type' (DP/AA/BL), and mounting.

Yep, I found long ago (several SS versions) freeboard heights effected barbette armor.
Moving the midships break meant my "Q" mounts changed weights. Fiddled around with it from there. Kinda like Rocky did.

There is still a slight difference - the Encyclopedia version is 35% fore deck, the 'from scratch' is 30%.
Since it's flush deck that should not matter....

The solution arrived at is responsible and reasonable.
We do similar for additional weights all the time.

I wonder if I've missed similar problems.
I tend to bring up a blank SS, put the old turrets & guns in main battery, put the new turrets and guns in 2nd tab, and do a 'last check' comparison that the weights are the within the rules. Works for magazines too...but I skip the barbettes. Then I go to the ship SS and change the old main battery to the new one.
I may have missed entirely any barbette issues.