Battleship Blogging Addendum

I recently discovered SpringSharp, a program that produces technical specs for hypothetical battleships and battlecruisers. I’ve had a lot of fun with it. Here is the output for a 1922 Spanish battleship design:

777B, Spain Battleship laid down 1922

Displacement:
24,372 t light; 25,865 t standard; 27,713 t normal; 29,191 t full load

Dimensions: Length overall / water x beam x draught
600.00 ft / 600.00 ft x 104.00 ft x 29.00 ft (normal load)
182.88 m / 182.88 m x 31.70 m x 8.84 m

Armament:
6 – 15.00″ / 381 mm guns (3×2 guns), 1,687.50lbs / 765.44kg shells, 1922 Model
Breech loading guns in Coles/Ericsson turrets
on centreline ends, majority forward, 1 raised mount
10 – 5.50″ / 140 mm guns in single mounts, 83.18lbs / 37.73kg shells, 1922 Model
Breech loading guns in deck mounts
on side, evenly spread
4 – 4.00″ / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1922 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 11,085 lbs / 5,028 kg
Shells per gun, main battery: 150
4 – 24.0″ / 609.6 mm submerged torpedo tubes

Armour:
– Belts: Width (max) Length (avg) Height (avg)
Main: 12.0″ / 305 mm 390.00 ft / 118.87 m 12.24 ft / 3.73 m
Ends: 4.00″ / 102 mm 209.98 ft / 64.00 m 12.24 ft / 3.73 m
Upper: 3.00″ / 76 mm 390.00 ft / 118.87 m 8.00 ft / 2.44 m
Main Belt covers 100 % of normal length

– Torpedo Bulkhead:
2.00″ / 51 mm 390.00 ft / 118.87 m 26.21 ft / 7.99 m

– Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 12.0″ / 305 mm – –
2nd: 2.00″ / 51 mm – –
3rd: 1.00″ / 25 mm – –

– Armour deck: 4.00″ / 102 mm, Conning tower: 11.00″ / 279 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 3 shafts, 64,726 shp / 48,286 Kw = 25.05 kts
Range 6,000nm at 16.00 kts
Bunker at max displacement = 3,325 tons

Complement:
1,073 – 1,396

Cost:
£6.339 million / $25.356 million

Distribution of weights at normal displacement:
Armament: 1,386 tons, 5.0 %
Armour: 10,342 tons, 37.3 %
– Belts: 3,314 tons, 12.0 %
– Torpedo bulkhead: 756 tons, 2.7 %
– Armament: 2,873 tons, 10.4 %
– Armour Deck: 3,181 tons, 11.5 %
– Conning Tower: 217 tons, 0.8 %
Machinery: 2,196 tons, 7.9 %
Hull, fittings & equipment: 10,449 tons, 37.7 %
Fuel, ammunition & stores: 3,341 tons, 12.1 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
39,003 lbs / 17,691 Kg = 23.1 x 15.0 ” / 381 mm shells or 7.3 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 7.0 ft / 2.1 m
Roll period: 16.6 seconds
Steadiness – As gun platform (Average = 50 %): 52 %
– Recoil effect (Restricted arc if above 1.00): 0.33
Seaboat quality (Average = 1.00): 1.03

Ship space, strength and comments:
Space – Hull below water (magazines/engines, low = better): 83.1 %
– Above water (accommodation/working, high = better): 130.9 %
Waterplane Area: 42,982 Square feet or 3,993 Square metres
Displacement factor (Displacement / loading): 107 %
Structure weight / hull surface area: 184 lbs/sq ft or 896 Kg/sq metre
Hull strength (Relative):
– Cross-sectional: 0.96
– Longitudinal: 1.47
– Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent