Vilnius Union Ships, 1920+: Electric Drive Boogaloo

Started by The Rock Doctor, September 29, 2021, 09:44:16 AM

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The Rock Doctor

Also for my amusement, a screening cruiser that keeps most of its guns in deck-level casement galleries, allowing rather stupidly large broadsides and an ability to put out a lot of firepower on both beams. 

Sight lines for the non-casemate guns are probably pretty good.

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

Displacement:
   7,881 t light; 8,612 t standard; 9,468 t normal; 10,153 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (540.81 ft / 524.93 ft) x 55.77 ft x (22.64 / 23.87 ft)
   (164.84 m / 160.00 m) x 17.00 m  x (6.90 / 7.27 m)

Armament:
      8 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 400 per gun
     Dual purpose guns in deck and hoist mounts, 1929 Model
     4 x 2-gun mounts on centreline ends, evenly spread
      24 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 400 per gun
     Dual purpose guns in casemate mounts, 1929 Model
     24 x Single mounts on sides, evenly spread
      16 - 1.97" / 50.0 mm 60.0 cal guns - 4.18lbs / 1.89kg shells, 1,500 per gun
     Anti-air guns in deck mounts, 1929 Model
     8 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 mount, 1929 Model
     8 x Twin mounts on sides, evenly spread
      8 double raised mounts
      Weight of broadside 2,232 lbs / 1,012 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2.95" / 75 mm   380.58 ft / 116.00 m   15.75 ft / 4.80 m
   Ends:   Unarmoured
   Upper:   2.95" / 75 mm   380.58 ft / 116.00 m   7.87 ft / 2.40 m
     Main Belt covers 112 % of normal length

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

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

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 87,131 shp / 65,000 Kw = 32.03 kts
   Range 16,400nm at 10.00 kts
   Bunker at max displacement = 1,541 tons

Complement:
   479 - 623

Cost:
   £3.140 million / $12.558 million

Distribution of weights at normal displacement:
   Armament: 474 tons, 5.0 %
   Armour: 1,827 tons, 19.3 %
      - Belts: 1,076 tons, 11.4 %
      - Armament: 150 tons, 1.6 %
      - Armour Deck: 573 tons, 6.1 %
      - Conning Tower: 28 tons, 0.3 %
   Machinery: 2,676 tons, 28.3 %
   Hull, fittings & equipment: 2,683 tons, 28.3 %
   Fuel, ammunition & stores: 1,587 tons, 16.8 %
   Miscellaneous weights: 221 tons, 2.3 %
      - On freeboard deck: 100 tons
      - Above deck: 121 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8,301 lbs / 3,765 Kg = 123.8 x 5.1 " / 130 mm shells or 1.2 torpedoes
   Stability (Unstable if below 1.00): 1.13
   Metacentric height 2.6 ft / 0.8 m
   Roll period: 14.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.54
   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): 0.500 / 0.509
   Length to Beam Ratio: 9.41 : 1
   'Natural speed' for length: 22.91 kts
   Power going to wave formation at top speed: 60 %
   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 %,  25.59 ft / 7.80 m,  20.67 ft / 6.30 m
      - Forward deck:   30.00 %,  20.67 ft / 6.30 m,  20.67 ft / 6.30 m
      - Aft deck:   35.00 %,  20.67 ft / 6.30 m,  20.67 ft / 6.30 m
      - Quarter deck:   15.00 %,  20.67 ft / 6.30 m,  20.67 ft / 6.30 m
      - Average freeboard:      21.06 ft / 6.42 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 109.9 %
      - Above water (accommodation/working, high = better): 160.3 %
   Waterplane Area: 19,507 Square feet or 1,812 Square metres
   Displacement factor (Displacement / loading): 109 %
   Structure weight / hull surface area: 85 lbs/sq ft or 413 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.82
      - Longitudinal: 2.06
      - Overall: 0.90
   Caution: Hull subject to strain in open-sea
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Warning: Wrong mount for dual purpose gun - 2nd battery - I get it, I'm thinking anti torpedo bomber work here.


Kaiser Kirk

Quote from: The Rock Doctor on November 12, 2023, 01:45:33 PM
Also for my amusement, a screening cruiser that keeps most of its guns in deck-level casement galleries, allowing rather stupidly large broadsides and an ability to put out a lot of firepower on both beams. 

Warning: Wrong mount for dual purpose gun - 2nd battery - I get it, I'm thinking anti torpedo bomber work here.

I would NEVER do something like that, simply Un-Bavarian.

Oh wait, in this rendition I'm playing the Parthians who most definitely do such things...
Heck, I've posted a carrier along these lines...

DP :
I think that's one of the warnings that can be deleted in favor of the Clarity of 'yes, these casement guns are expected to be used for AA'.
Considering the USS Maryland was 'refurbished' to have 5"/38 DPs in the casements, which were then drilled at AA and issued some preset time fuse for barrage, and later prox fuse....there's precedent.
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

The Rock Doctor

Yeah, I thought you might be intrigued by that.

Too fast and not enough armor but what can I say.

Jefgte

Quote...
Displacement:
   7,881 t light; 8,612 t standard; 9,468 t normal; 10,153 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (540.81 ft / 524.93 ft) x 55.77 ft x (22.64 / 23.87 ft)
   (164.84 m / 160.00 m) x 17.00 m  x (6.90 / 7.27 m)

Armament:
      8 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 400 per gun
     Dual purpose guns in deck and hoist mounts, 1929 Model
     4 x 2-gun mounts on centreline ends, evenly spread
      24 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 400 per gun
     Dual purpose guns in casemate mounts, 1929 Model
     24 x Single mounts on sides, evenly spread...

I prefer 4 x 2000t DDs with 4T2x130 (32x130 in all)
"You French are fighting for money, while we English are fighting for honor!"
"Everyone is fighting for what they miss. "
Surcouf

The Rock Doctor