The BB I'm actually building

Started by Sachmle, October 27, 2008, 12:10:27 PM

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Sachmle

This is the 1914BB I'm laying down. She's not perfect, but w/ my limitations on slip size/total BP(Weight) and whatnot she's pretty decent if I do say so myself.

1914 Final, NUS Battleship laid down 1914 (Engine 1912)

Displacement:
   25,300 t light; 26,755 t standard; 28,565 t normal; 30,013 t full load

Dimensions: Length overall / water x beam x draught
   557.00 ft / 557.00 ft x 104.00 ft x 28.00 ft (normal load)
   169.77 m / 169.77 m x 31.70 m  x 8.53 m

Armament:
      10 - 13.50" / 343 mm guns (5x2 guns), 1,250.00lbs / 566.99kg shells, 1914 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread, 3 raised mounts
      12 - 6.00" / 152 mm guns in single mounts, 100.00lbs / 45.36kg shells, 1905 Model
     Breech loading guns in casemate mounts
     on side, evenly spread
      12 - 4.00" / 102 mm guns in single mounts, 30.00lbs / 13.61kg shells, 1906 Model
     Quick firing guns in deck mounts
     on side ends, evenly spread
      6 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1914 Model
     Quick firing guns in deck mounts
     on centreline, evenly spread, all raised mounts
      4 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1914 Model
     Anti-aircraft guns in deck mounts
     on side ends, evenly spread, all raised mounts - superfiring
   Weight of broadside 14,143 lbs / 6,415 kg
   Shells per gun, main battery: 110
   6 - 18.0" / 457.2 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.0" / 330 mm   363.00 ft / 110.64 m   16.00 ft / 4.88 m
   Ends:   6.00" / 152 mm   179.00 ft / 54.56 m   10.00 ft / 3.05 m
     15.00 ft / 4.57 m Unarmoured ends
   Upper:   8.00" / 203 mm   363.00 ft / 110.64 m   8.00 ft / 2.44 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   363.00 ft / 110.64 m   37.00 ft / 11.28 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 381 mm   8.00" / 203 mm      12.0" / 305 mm
   2nd:   6.00" / 152 mm   1.00" / 25 mm      1.00" / 25 mm

   - Armour deck: 3.00" / 76 mm, Conning tower: 15.00" / 381 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 29,427 shp / 21,952 Kw = 20.00 kts
   Range 8,000nm at 12.00 kts
   Bunker at max displacement = 3,258 tons

Complement:
   1,098 - 1,428

Cost:
   £3.216 million / $12.863 million

Distribution of weights at normal displacement:
   Armament: 1,758 tons, 6.2 %
   Armour: 11,505 tons, 40.3 %
      - Belts: 4,811 tons, 16.8 %
      - Torpedo bulkhead: 994 tons, 3.5 %
      - Armament: 3,011 tons, 10.5 %
      - Armour Deck: 2,388 tons, 8.4 %
      - Conning Tower: 302 tons, 1.1 %
   Machinery: 1,173 tons, 4.1 %
   Hull, fittings & equipment: 10,259 tons, 35.9 %
   Fuel, ammunition & stores: 3,265 tons, 11.4 %
   Miscellaneous weights: 605 tons, 2.1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     38,850 lbs / 17,622 Kg = 31.6 x 13.5 " / 343 mm shells or 7.8 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 6.4 ft / 1.9 m
   Roll period: 17.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 62 %
         - Recoil effect (Restricted arc if above 1.00): 0.45
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.616
   Length to Beam Ratio: 5.36 : 1
   'Natural speed' for length: 23.60 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: -3.00 ft / -0.91 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18.00 ft / 5.49 m
      - Forecastle (20 %):   16.00 ft / 4.88 m
      - Mid (50 %):      16.00 ft / 4.88 m
      - Quarterdeck (15 %):   16.00 ft / 4.88 m
      - Stern:      16.00 ft / 4.88 m
      - Average freeboard:   16.16 ft / 4.93 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 80.6 %
      - Above water (accommodation/working, high = better): 119.4 %
   Waterplane Area: 43,020 Square feet or 3,997 Square metres
   Displacement factor (Displacement / loading): 100 %
   Structure weight / hull surface area: 186 lbs/sq ft or 910 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.40
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is adequate
   Good seaboat, rides out heavy weather easily

250t MFC
100t SFC
25t LWT
10t SWT
20t 20 18" Torpedoes
200t Reserve
"All treaties between great states cease to be binding when they come in conflict with the struggle for existence."
Otto von Bismarck

"Give me a woman who loves beer and I will conquer the world."
Kaiser Wilhelm

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

The Rock Doctor

Pretty sturdy design.  The freeboard's a little low for my liking, but it seems to work out for you.  Certainly other folks work with similar freeboard.

Got a name for her?

Jefgte

Whaoooo

Nice drawing & very good general concept.
I note particulary the heavy protection - 40%


Jef  ;)
"You French are fighting for money, while we English are fighting for honor!"
"Everyone is fighting for what they miss. "
Surcouf

P3D

Barbette protection is a bit problematic. For plunging shells, the upper belt does not defend the barbette - this is also true for the exposed part of the barbettes. Protection is almost the same as the Orange BBs. However:

Only the casemate turret mounts are armored, the casemates themselves are not. There's no armor between the mounts - I solve it by adding a few ft to UB height. Just compare the casemate armament armor weight to the weight of a belt that'd protect it, there's a big difference. Add ~3' to UB so that the guns would be armored.

Main external belt with 8' depth below waterline is a waste of steel. For external vertical belt below WL 6' should be enough IMHO.

Upper belt for Orange ships only covers the length where the casemates are located, perhaps the uptakes. I do not cover the barbettes themselves - but make barbette armor thicker.
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

Guinness

So how does one handle casemate armor above the freeboard deck? You can't make the total of armored belts taller than freeboard, and the "other above deck" armor column for casemate batteries doesn't appear to do anything.

P3D

If SS2 screams of the high freeboard, increase thickness accordingly and make a note on it.
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas