The GB/BB/1907 battleship drawing from August 31, 2001

The GB/BB/1907 battleship drawing dating from August 31, 2001 is a moderately good view of my friend Cliff's concept for the class. When I entered the design into Springsharp, there was room for growth, so I used an armor basis of 14in, instead of 13.7in. The machinery date has to be set to 1909 to work, but otherwise, there is no stretching. The dimensions are 680ft x 87ft x 30ft, with a normal displacement of 27,500 tons. The armament is the 6-12in/50 BLR and 8-6in/50 QF guns, all in twin turrets. There was room in the Springsharp design for a maximum speed of 25 knots. This is the Springsharp report:

GB/BB/1907, Great Britain Battleship laid down 1907 (Engine 1909)

Displacement:
 24,084 t light; 24,910 t standard; 27,500 t normal; 29,572 t full load

Dimensions: Length overall / water x beam x draught
 680.00 ft / 680.00 ft x 87.00 ft x 30.00 ft (normal load)
 207.26 m / 207.26 m x 26.52 m  x 9.14 m

Armament:
      6 - 12.00" / 305 mm guns (3x2 guns), 864.00lbs / 391.90kg shells, 1907 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      8 - 6.00" / 152 mm guns (4x2 guns), 108.00lbs / 48.99kg shells, 1907 Model
   Quick firing guns in turrets (on barbettes)
   on side, all aft
 Weight of broadside 6,048 lbs / 2,743 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 14.0" / 356 mm 385.00 ft / 117.35 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 87 % of normal length

   - Torpedo Bulkhead:
  3.00" / 76 mm 385.00 ft / 117.35 m 28.00 ft / 8.53 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 14.0" / 356 mm 11.0" / 279 mm  14.0" / 356 mm
 2nd: 6.00" / 152 mm 6.00" / 152 mm  6.00" / 152 mm

   - Armour deck: 4.00" / 102 mm, Conning tower: 14.00" / 356 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 59,345 shp / 44,271 Kw = 25.00 kts
 Range 6,300nm at 15.00 kts
 Bunker at max displacement = 4,663 tons

Complement:
 1,067 - 1,388

Cost:
 £1.856 million / $7.423 million

Distribution of weights at normal displacement:
 Armament: 756 tons, 2.7 %
 Armour: 10,995 tons, 40.0 %
    - Belts: 4,019 tons, 14.6 %
    - Torpedo bulkhead: 1,197 tons, 4.4 %
    - Armament: 2,471 tons, 9.0 %
    - Armour Deck: 3,033 tons, 11.0 %
    - Conning Tower: 275 tons, 1.0 %
 Machinery: 2,697 tons, 9.8 %
 Hull, fittings & equipment: 9,636 tons, 35.0 %
 Fuel, ammunition & stores: 3,416 tons, 12.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   53,543 lbs / 24,286 Kg = 62.0 x 12.0 " / 305 mm shells or 9.9 torpedoes
 Stability (Unstable if below 1.00): 1.07
 Metacentric height 4.6 ft / 1.4 m
 Roll period: 17.0 seconds
 Steadiness - As gun platform (Average = 50 %): 86 %
   - Recoil effect (Restricted arc if above 1.00): 0.60
 Seaboat quality  (Average = 1.00): 1.73

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.542
 Length to Beam Ratio: 7.82 : 1
 'Natural speed' for length: 26.08 kts
 Power going to wave formation at top speed: 45 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -2.00 degrees
 Stern overhang: -1.00 ft / -0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  29.00 ft / 8.84 m
    - Forecastle (20 %): 26.00 ft / 7.92 m
    - Mid (65 %):  26.00 ft / 7.92 m (18.00 ft / 5.49 m aft of break)
    - Quarterdeck (15 %): 18.00 ft / 5.49 m
    - Stern:  18.00 ft / 5.49 m
    - Average freeboard: 23.44 ft / 7.14 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 69.1 %
  - Above water (accommodation/working, high = better): 172.2 %
 Waterplane Area: 40,991 Square feet or 3,808 Square metres
 Displacement factor (Displacement / loading): 123 %
 Structure weight / hull surface area: 155 lbs/sq ft or 755 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.55
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Excellent seaboat, comfortable, can fire her guns in the heaviest weather