Since it seems popular, here's the KM 1920 Battleship

Started by Sachmle, November 23, 2009, 07:39:56 PM

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Sachmle

Ersatz O, Brandenburger Schlachtschiffe laid down 1920 (Engine 1916)

Displacement:
   37,000 t light; 38,711 t standard; 40,430 t normal; 41,805 t full load

Dimensions: Length overall / water x beam x draught
   721.77 ft / 715.22 ft x 116.47 ft x 28.38 ft (normal load)
   220.00 m / 218.00 m x 35.50 m  x 8.65 m

Armament:
      10 - 14.96" / 380 mm guns (5x2 guns), 1,653.47lbs / 750.00kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread, 2 raised mounts
      16 - 5.12" / 130 mm guns (8x2 guns), 66.14lbs / 30.00kg shells, 1918 Model
     Quick firing guns in deck mounts with hoists
     on side, all amidships, 4 raised mounts - superfiring
      8 - 3.46" / 88.0 mm guns in single mounts, 22.05lbs / 10.00kg shells, 1920 Model
     Anti-aircraft guns in deck mounts
     on side ends, evenly spread, all raised mounts - superfiring
      4 - 1.97" / 50.0 mm guns (2x2 guns), 3.86lbs / 1.75kg shells, 1920 Model
     Anti-aircraft guns in deck mounts
     on centreline ends, evenly spread, all raised mounts
   Weight of broadside 17,785 lbs / 8,067 kg
   Shells per gun, main battery: 90
   6 - 19.7" / 500 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.8" / 350 mm   465.06 ft / 141.75 m   16.40 ft / 5.00 m
   Ends:   3.94" / 100 mm   250.16 ft / 76.25 m   11.48 ft / 3.50 m
   Upper:   5.91" / 150 mm   465.06 ft / 141.75 m   8.20 ft / 2.50 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead:
      1.97" / 50 mm   465.06 ft / 141.75 m   44.78 ft / 13.65 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 380 mm   9.84" / 250 mm      13.8" / 350 mm
   2nd:   3.94" / 100 mm   1.97" / 50 mm      2.95" / 75 mm
   3rd:   1.97" / 50 mm         -               -
   4th:   0.98" / 25 mm         -               -

   - Armour deck: 3.94" / 100 mm, Conning tower: 14.96" / 380 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 70,000 shp / 52,220 Kw = 24.26 kts
   Range 10,000nm at 10.00 kts
   Bunker at max displacement = 3,094 tons

Complement:
   1,425 - 1,853

Cost:
   £8.390 million / $33.561 million

Distribution of weights at normal displacement:
   Armament: 2,250 tons, 5.6 %
   Armour: 16,230 tons, 40.1 %
      - Belts: 6,030 tons, 14.9 %
      - Torpedo bulkhead: 1,517 tons, 3.8 %
      - Armament: 3,871 tons, 9.6 %
      - Armour Deck: 4,432 tons, 11.0 %
      - Conning Tower: 380 tons, 0.9 %
   Machinery: 2,608 tons, 6.5 %
   Hull, fittings & equipment: 15,413 tons, 38.1 %
   Fuel, ammunition & stores: 3,430 tons, 8.5 %
   Miscellaneous weights: 500 tons, 1.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     56,699 lbs / 25,718 Kg = 33.9 x 15.0 " / 380 mm shells or 11.1 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 7.5 ft / 2.3 m
   Roll period: 17.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.44
   Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.599
   Length to Beam Ratio: 6.14 : 1
   'Natural speed' for length: 26.74 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): 12.50 degrees
   Stern overhang: -4.10 ft / -1.25 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      29.53 ft / 9.00 m
      - Forecastle (26 %):   24.61 ft / 7.50 m
      - Mid (50 %):      16.40 ft / 5.00 m
      - Quarterdeck (15 %):   16.40 ft / 5.00 m
      - Stern:      16.40 ft / 5.00 m
      - Average freeboard:   20.00 ft / 6.10 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 79.9 %
      - Above water (accommodation/working, high = better): 147.1 %
   Waterplane Area: 60,844 Square feet or 5,653 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 199 lbs/sq ft or 970 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.11
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

250t 1912 issue Fire Control Equipment
36t 1913 issue 2t 50cm Torpedoes, 3 per tube, 18 total
25t 1905 issue Sehendes Auge Installation
25t Long Range Markoni Installation
25t 1912 Star Shells and 60cm Searchlights
139t Reserve Weight

All armor is Improved KC (+10%), Main belt inclined 10*.
25mm Upper/Weather Deck setting on top of Upper Belt.
75mm Main Deck meeting at top of Main Belt.
TDS continues above waterline to weatherdeck as 50mm splinter armor
"All treaties between great states cease to be binding when they come in conflict with the struggle for existence."
Otto von Bismarck

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Kaiser Wilhelm

"If stupidity were painfull I would be deaf from all the screaming." Sam A. Grim

Desertfox

"We don't run from the end of the world. We CHARGE!" Schlock

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