Just a thought

Started by Tanthalas, November 26, 2007, 11:16:08 PM

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Tanthalas

Wondering if it would be worth building, i already have the LBB program which the second is around half compleated.  So im thinking of building this instead of a third of the 9 gun versions.


Italia-BB-1909, Italia Light Battle Ship laid down 1909

Displacement:
   17,581 t light; 18,525 t standard; 19,679 t normal; 20,602 t full load

Dimensions: Length overall / water x beam x draught
   504.58 ft / 500.00 ft x 90.00 ft x 25.00 ft (normal load)
   153.80 m / 152.40 m x 27.43 m  x 7.62 m

Armament:
      10 - 12.00" / 305 mm guns (4 mounts), 864.00lbs / 391.90kg shells, 1909 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      16 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1909 Model
     Quick firing guns in casemate mounts
     on side, all amidships
      3 - 3.00" / 76.2 mm guns (2 mounts), 13.50lbs / 6.12kg shells, 1909 Model
     Quick firing guns in deck mounts with hoists
     on side, evenly spread
      20 - 0.75" / 19.1 mm guns (10x2 guns), 0.21lbs / 0.10kg shells, 1909 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 9,685 lbs / 4,393 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   280.00 ft / 85.34 m   12.00 ft / 3.66 m
   Ends:   6.00" / 152 mm   219.98 ft / 67.05 m   12.00 ft / 3.66 m
   Upper:   6.00" / 152 mm   280.00 ft / 85.34 m   8.00 ft / 2.44 m
     Main Belt covers 86 % of normal length

   - Torpedo Bulkhead:
      1.00" / 25 mm   280.00 ft / 85.34 m   23.69 ft / 7.22 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12.0" / 305 mm   6.00" / 152 mm      12.0" / 305 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 12.00" / 305 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 3 shafts, 24,018 shp / 17,918 Kw = 20.00 kts
   Range 6,600nm at 10.00 kts
   Bunker at max displacement = 2,077 tons (70% coal)

Complement:
   829 - 1,079

Cost:
   £1.795 million / $7.182 million

Distribution of weights at normal displacement:
   Armament: 1,211 tons, 6.2 %
   Armour: 7,128 tons, 36.2 %
      - Belts: 3,077 tons, 15.6 %
      - Torpedo bulkhead: 245 tons, 1.2 %
      - Armament: 2,385 tons, 12.1 %
      - Armour Deck: 1,232 tons, 6.3 %
      - Conning Tower: 188 tons, 1.0 %
   Machinery: 1,166 tons, 5.9 %
   Hull, fittings & equipment: 7,877 tons, 40.0 %
   Fuel, ammunition & stores: 2,098 tons, 10.7 %
   Miscellaneous weights: 200 tons, 1.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     29,148 lbs / 13,222 Kg = 33.7 x 12.0 " / 305 mm shells or 5.0 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 4.6 ft / 1.4 m
   Roll period: 17.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.73
   Seaboat quality  (Average = 1.00): 1.43

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.612
   Length to Beam Ratio: 5.56 : 1
   'Natural speed' for length: 22.36 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 49
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      26.00 ft / 7.92 m
      - Forecastle (22 %):   24.00 ft / 7.32 m
      - Mid (50 %):      24.00 ft / 7.32 m (15.00 ft / 4.57 m aft of break)
      - Quarterdeck (22 %):   15.00 ft / 4.57 m
      - Stern:      15.00 ft / 4.57 m
      - Average freeboard:   19.68 ft / 6.00 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 86.1 %
      - Above water (accommodation/working, high = better): 149.2 %
   Waterplane Area: 33,290 Square feet or 3,093 Square metres
   Displacement factor (Displacement / loading): 102 %
   Structure weight / hull surface area: 173 lbs/sq ft or 847 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.85
      - Overall: 1.00
   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

"He either fears his fate too much,
Or his desserts are small,
Who dares not put it to the touch,
To win or lose it all!"

James Graham, 5th Earl of Montrose
1612 to 1650
Royalist General during the English Civil War

Borys

Ahoj!
Apart from the one foot gap between top of UB and weather deck, I see no fault in these ships.
Borys
NEDS - Not Enough Deck Space for all those guns and torpedos;
Bambi must DIE!

Tanthalas

"He either fears his fate too much,
Or his desserts are small,
Who dares not put it to the touch,
To win or lose it all!"

James Graham, 5th Earl of Montrose
1612 to 1650
Royalist General during the English Civil War