Dreadnought

[Earl822]

This is the final design for Dreadnought, 340mm guns donated by France for first ship, and copied for others

HMS Dreadnought Class, United Kingdom Battleship laid down 1905 (Engine 1909)

Displacement:
   18,000 t light; 19,045 t standard; 22,102 t normal; 24,548 t full load

Dimensions: Length overall / water x beam x draught
   556.58 ft / 552.00 ft x 75.00 ft (Bulges 88.00 ft) x 24.50 ft (normal load)
   169.65 m / 168.25 m x 22.86 m (Bulges 26.82 m)  x 7.47 m

Armament:
      8 - 13.39" / 340 mm guns (4x2 guns), 1,250.00lbs / 566.99kg shells, 1905 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, 1 raised mount - superfiring
      8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1905 Model
     Breech loading guns in casemate mounts
     on side, all forward
     8 guns in hull casemates - Limited use in heavy seas
      6 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1905 Model
     Breech loading guns in casemate mounts
     on side, all aft
      16 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1905 Model
     Quick firing guns in deck mounts
     on side, evenly spread, 8 raised mounts
      24 - 0.50" / 12.7 mm guns (12x2 guns), 0.06lbs / 0.03kg shells, 1905 Model
     Machine guns in deck mounts
     on side, evenly spread, 6 raised mounts
   Weight of broadside 11,729 lbs / 5,320 kg
   Shells per gun, main battery: 90

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   355.00 ft / 108.20 m   11.50 ft / 3.51 m
   Ends:   3.00" / 76 mm   197.00 ft / 60.05 m   11.50 ft / 3.51 m
   Upper:   5.00" / 127 mm   355.00 ft / 108.20 m   8.00 ft / 2.44 m
     Main Belt covers 99 % of normal length

   - Torpedo Bulkhead and Bulges:
      1.25" / 32 mm   355.00 ft / 108.20 m   22.00 ft / 6.71 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12.0" / 305 mm   9.00" / 229 mm      9.00" / 229 mm
   2nd:   3.00" / 76 mm   1.00" / 25 mm      1.00" / 25 mm
   3rd:   3.00" / 76 mm   1.00" / 25 mm      1.00" / 25 mm
   4th:   0.50" / 13 mm         -               -

   - Armour deck: 3.00" / 76 mm, Conning tower: 12.00" / 305 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 30,294 shp / 22,599 Kw = 21.00 kts
   Range 10,065nm at 12.00 kts
   Bunker at max displacement = 5,503 tons (100% coal)

Complement:
   906 - 1,178

Cost:
   £2.031 million / $8.124 million

Distribution of weights at normal displacement:
   Armament: 1,415 tons, 6.4 %
   Armour: 7,399 tons, 33.5 %
      - Belts: 2,988 tons, 13.5 %
      - Torpedo bulkhead: 361 tons, 1.6 %
      - Armament: 2,086 tons, 9.4 %
      - Armour Deck: 1,760 tons, 8.0 %
      - Conning Tower: 204 tons, 0.9 %
   Machinery: 1,515 tons, 6.9 %
   Hull, fittings & equipment: 7,596 tons, 34.4 %
   Fuel, ammunition & stores: 4,102 tons, 18.6 %
   Miscellaneous weights: 75 tons, 0.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     26,325 lbs / 11,941 Kg = 22.0 x 13.4 " / 340 mm shells or 4.7 torpedoes
   Stability (Unstable if below 1.00): 1.15
   Metacentric height 4.2 ft / 1.3 m
   Roll period: 18.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.55
   Seaboat quality  (Average = 1.00): 1.33

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.650
   Length to Beam Ratio: 6.27 : 1
   'Natural speed' for length: 23.49 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 53
   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 (30 %):   24.00 ft / 7.32 m
      - Mid (30 %):      24.00 ft / 7.32 m (14.00 ft / 4.27 m aft of break)
      - Quarterdeck (10 %):   14.00 ft / 4.27 m
      - Stern:      15.00 ft / 4.57 m
      - Average freeboard:   17.29 ft / 5.27 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 96.6 %
      - Above water (accommodation/working, high = better): 93.3 %
   Waterplane Area: 31,715 Square feet or 2,946 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 161 lbs/sq ft or 788 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.25
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

HAMS Dreadnought, St Vincent & Orion

[Ithekro]

One logical question:  Why would the French give you their largest guns?

[Earl822]

They owed the UK big time for turbines, and various other ships that have been built/ rebuilt for them.

Maddox, I as the UKA sold France turbines for its aria class in 1904, was this info lost.

[maddox]

IC

The UKA sold Premier Palpaté 30 15000 hp steamturbine units.   
In exchange the 6 340mm guns from Greater Napoleon and  2 build for Paris got transported to the UKA during 1904- when the fortress Greater Napoleon is being build, and a load of MBP's in the form of factories  build on the border.

OOC
France did honor Palpatés deal, and the 8 340 mm guns are in the UKA now.

And Ithecro, you designed those ships, and those 340 mm guns are representing 13" guns.

If you read other parts, you'll know that France has 15" guns, but wouldn't spend more money on them.

[Ithekro]

Well that explains it at least...I guess I missed that in the news earlier.