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Friday, March 16, 2007

An anachronistic Warrior design

The anachronistic Warrior design is even more of a challenge than the Black Prince, because the Warrior has 6-7in guns mounted in superfiring position in two triple turrets. The beam is a more realistic 58.33ft, which makes the stability and recoil issues even more critical. The armament is 4-8in/45 BLR, 14-7in BLR, and 4-4in QF guns. The armour basis is still 4.5in with a 2in deck. The freeboard and maximum speed are lower than the Black Prince design, due to the recoil issue, particularly. Back when I drew the drawing and wrote the specs, I designated the Warrior "BB-1". This is the Springsharp report:
Warrior, anachronistic design, Great Britain Armoured Cruiser laid down 1907 (Engine 1909)

Displacement:
 7,296 t light; 7,774 t standard; 9,134 t normal; 10,222 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (400.00 ft / 400.00 ft) x 58.33 ft x (26.00 / 28.47 ft)
 (121.92 m / 121.92 m) x 17.78 m  x (7.92 / 8.68 m)

Armament:
      4 - 8.00" / 203 mm 45.0 cal guns - 250.00lbs / 113.40kg shells, 150 per gun
   Breech loading guns in turret on barbette mounts , 1907 Model
   2 x Twin mounts on centreline ends, evenly spread
      14 - 7.00" / 178 mm 45.0 cal guns - 172.96lbs / 78.45kg shells, 150 per gun
   Breech loading guns in turret on barbette mounts , 1907 Model
   2 x Triple mounts on centreline ends, evenly spread
  2 raised mounts
   4 x Twin mounts on sides, evenly spread
  4 raised mounts
      4 - 4.00" / 102 mm 45.0 cal guns - 32.27lbs / 14.64kg shells, 150 per gun
   Quick firing guns in turret on barbette mounts , 1907 Model
   2 x Twin mounts on sides, forward deck forward
 Weight of broadside 3,551 lbs / 3,551 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.50" / 114 mm 265.00 ft / 80.77 m 15.00 ft / 4.57 m
 Ends: Unarmoured
   Main Belt covers 102 % of normal length

   - Torpedo Bulkhead:
  1.50" / 38 mm 265.00 ft / 80.77 m 27.00 ft / 8.23 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.50" / 114 mm 4.00" / 102 mm  4.50" / 114 mm
 2nd: 4.50" / 114 mm 4.00" / 102 mm  4.50" / 114 mm
 3rd: 3.00" / 76 mm 3.00" / 76 mm  3.00" / 76 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.50" / 114 mm

Machinery:
 Coal and oil fired boilers, complex reciprocating steam engines, 
 ERROR: Revise drives, 1 shaft, 10,124 ihp / 7,553 Kw = 18.00 kts
 Range 5,600nm at 14.00 kts
 Bunker at max displacement = 2,448 tons (100% coal)

Complement:
 466 - 607

Cost:
 £0.701 million / $2.806 million

Distribution of weights at normal displacement:
 Armament: 809 tons, 8.9 %
 Armour: 2,758 tons, 30.2 %
    - Belts: 770 tons, 8.4 %
    - Torpedo bulkhead: 397 tons, 4.3 %
    - Armament: 979 tons, 10.7 %
    - Armour Deck: 570 tons, 6.2 %
    - Conning Tower: 42 tons, 0.5 %
 Machinery: 779 tons, 8.5 %
 Hull, fittings & equipment: 3,358 tons, 36.8 %
 Fuel, ammunition & stores: 1,838 tons, 20.1 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   12,910 lbs / 5,856 Kg = 50.4 x 8.0 " / 203 mm shells or 2.9 torpedoes
 Stability (Unstable if below 1.00): 1.05
 Metacentric height 2.4 ft / 0.7 m
 Roll period: 15.7 seconds
 Steadiness - As gun platform (Average = 50 %): 38 %
   - Recoil effect (Restricted arc if above 1.00): 0.98
 Seaboat quality  (Average = 1.00): 1.14

Hull form characteristics:
 Hull has a flush deck,
   a ram bow and a round stern
 Block coefficient (normal/deep): 0.527 / 0.539
 Length to Beam Ratio: 6.86 : 1
 'Natural speed' for length: 20.00 kts
 Power going to wave formation at top speed: 43 %
 Trim (Max stability = 0, Max steadiness = 100): 26
 Bow angle (Positive = bow angles forward): 0.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 20.00 %,  19.00 ft / 5.79 m,  16.00 ft / 4.88 m
    - Forward deck: 30.00 %,  16.00 ft / 4.88 m,  15.00 ft / 4.57 m
    - Aft deck: 35.00 %,  15.00 ft / 4.57 m,  15.00 ft / 4.57 m
    - Quarter deck: 15.00 %,  15.00 ft / 4.57 m,  16.00 ft / 4.88 m
    - Average freeboard:  15.67 ft / 4.77 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 95.4 %
  - Above water (accommodation/working, high = better): 95.8 %
 Waterplane Area: 15,394 Square feet or 1,430 Square metres
 Displacement factor (Displacement / loading): 121 %
 Structure weight / hull surface area: 130 lbs/sq ft or 634 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.91
  - Longitudinal: 2.28
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is adequate

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