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Monday, January 29, 2007

My anachronistic Warrior design

I thought that I would try the original Warrior design, as an anachronistic Springsharp design. I tried out the new gun concept, as well. I assumed a more modern stern design, so the length on the waterline is greater than the original Warrior. The Warrior was completed with the following guns: 26-68pdr, 10-110pdr Armstrong BLR, and 4-70pdr Armstrong BLR. I did not have good figures on the 70pdr gun, so I used a 4in QF gun in place of it. For the other guns, I have 4-5in BLR in place of the 110pdrs. I have 26-5.5in BLR in place of the 68pdr SB guns. In place of the 70pdr, I have what would be shorter 5in guns. This is the Springsharp report:
Warrior, anachronistic version, Great Britain Armoured Cruiser laid down 1907

Displacement:
 7,735 t light; 8,150 t standard; 9,210 t normal; 10,058 t full load

Dimensions: Length overall / water x beam x draught
 401.15 ft / 398.00 ft x 58.25 ft x 26.00 ft (normal load)
 122.27 m / 121.31 m x 17.75 m  x 7.92 m

Armament:
      4 - 6.50" / 165 mm guns (2x2 guns), 137.31lbs / 62.28kg shells, 1907 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread
      28 - 5.50" / 140 mm guns in single mounts, 83.19lbs / 37.73kg shells, 1907 Model
   Breech loading guns in casemate mounts 
   on side, evenly spread
   16 guns in hull casemates - Limited use in heavy seas
      4 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1907 Model
   Quick firing guns in deck mounts with hoists
   on side, all amidships
 Weight of broadside 3,007 lbs / 1,364 kg
 Shells per gun, main battery: 120

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.50" / 114 mm 235.00 ft / 71.63 m 24.00 ft / 7.32 m
 Ends: Unarmoured
   Main Belt covers 91 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.50" / 114 mm 3.00" / 76 mm  4.50" / 114 mm
 2nd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm
 3rd: 1.00" / 25 mm 1.00" / 25 mm  1.00" / 25 mm

   - Armour deck: 1.00" / 25 mm, Conning tower: 4.50" / 114 mm

Machinery:
 Coal fired boilers, complex reciprocating steam engines, 
 Direct drive, 2 shafts, 26,614 ihp / 19,854 Kw = 23.00 kts
 Range 5,000nm at 13.00 kts
 Bunker at max displacement = 1,907 tons (100% coal)

Complement:
 469 - 611

Cost:
 £1.000 million / $4.002 million

Distribution of weights at normal displacement:
 Armament: 376 tons, 4.1 %
 Armour: 1,819 tons, 19.8 %
    - Belts: 1,121 tons, 12.2 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 360 tons, 3.9 %
    - Armour Deck: 295 tons, 3.2 %
    - Conning Tower: 43 tons, 0.5 %
 Machinery: 2,957 tons, 32.1 %
 Hull, fittings & equipment: 2,583 tons, 28.1 %
 Fuel, ammunition & stores: 1,475 tons, 16.0 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   5,696 lbs / 2,584 Kg = 41.5 x 6.5 " / 165 mm shells or 0.9 torpedoes
 Stability (Unstable if below 1.00): 1.43
 Metacentric height 4.1 ft / 1.3 m
 Roll period: 12.1 seconds
 Steadiness - As gun platform (Average = 50 %): 73 %
   - Recoil effect (Restricted arc if above 1.00): 0.42
 Seaboat quality  (Average = 1.00): 1.46

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.535
 Length to Beam Ratio: 6.83 : 1
 'Natural speed' for length: 19.95 kts
 Power going to wave formation at top speed: 56 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  22.00 ft / 6.71 m
    - Forecastle (20 %): 18.00 ft / 5.49 m
    - Mid (50 %):  18.00 ft / 5.49 m
    - Quarterdeck (15 %): 18.00 ft / 5.49 m
    - Stern:  18.00 ft / 5.49 m
    - Average freeboard: 18.32 ft / 5.58 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 135.0 %
  - Above water (accommodation/working, high = better): 116.6 %
 Waterplane Area: 15,951 Square feet or 1,482 Square metres
 Displacement factor (Displacement / loading): 86 %
 Structure weight / hull surface area: 96 lbs/sq ft or 467 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.89
  - Longitudinal: 2.81
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is adequate
 Ship has slow, easy roll, a good, steady gun platform
 Good seaboat, rides out heavy weather easily

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