(Historical data)
San Pablo (B-6) ex-Chinese Lee Siu-Lung, ex-USS Mississippi - laid down 1904, to China 1914, rebuilt 1925-26, acquired 1926, SUNK 1928
Displacement:
10,792 t light; 11,837 t standard; 13,025 t normal; 13,974 t full load
Dimensions: Length overall / water x beam x draught
388.16 ft / 382.00 ft x 77.00 ft x 24.60 ft (normal load)
118.31 m / 116.43 m x 23.47 m x 7.50 m
Armament:
4 - 12.00" / 305 mm guns (2x2 guns), 925.00lbs / 419.57kg shells, 1925 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 12.00" / 305 mm guns in single mounts, 925.00lbs / 419.57kg shells, 1925 Model
Breech loading guns in turrets (on barbettes)
on side ends, evenly spread
8 - 6.10" / 155 mm guns in single mounts, 120.00lbs / 54.43kg shells, 1926 Model
Breech loading guns in casemate mounts
on side, all amidships
8 guns in hull casemates - Limited use in all but light seas
12 - 3.94" / 100 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1923 Model
Quick firing guns in casemate mounts
on side, evenly spread
4 guns in hull casemates - Limited use in all but light seas
12 - 2.24" / 57.0 mm guns in single mounts, 6.00lbs / 2.72kg shells, 1923 Model
Quick firing guns in deck mounts
on side, evenly spread
6 - 0.98-inch / 25 mm guns (2x3 guns), 0.57-lb shells, 1925 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts
8 - 0.54-inch / 13.7 mm guns (4x2 guns), 0.11-lb shells, 1925 Model
Machine guns in deck mounts
on side, all amidships, all raised mounts
Weight of broadside 8,820 lbs / 4,001 kg
Shells per gun, main battery: 150
2 - 21.0" / 533.4 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 9.00" / 229 mm 257.85 ft / 78.59 m 10.53 ft / 3.21 m
Ends: 4.00" / 102 mm 124.13 ft / 37.83 m 10.53 ft / 3.21 m
Main Belt covers 104 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 12.0" / 305 mm 8.27" / 210 mm 9.00" / 229 mm
2nd: 12.0" / 305 mm 8.27" / 210 mm 6.00" / 152 mm
3rd: 7.00" / 178 mm - -
4th: 4.00" / 102 mm - -
5th: 0.98" / 25 mm - -
6th: 0.55" / 14 mm - -
- Armour deck: 3.00" / 76 mm, Conning tower: 9.00" / 229 mm
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 16,930 shp / 12,630 Kw = 19.00 kts
Range 12,500nm at 12.00 kts (Bunkerage = 2,137 tons)
Complement:
609 - 792
Cost:
£1.320 million / $5.281 million
Distribution of weights at normal displacement:
Armament: 1,032 tons, 7.9 %
Armour: 4,258 tons, 32.7 %
- Belts: 1,286 tons, 9.9 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1,637 tons, 12.6 %
- Armour Deck: 1,228 tons, 9.4 %
- Conning Tower: 107 tons, 0.8 %
Machinery: 542 tons, 4.2 %
Hull, fittings & equipment: 4,861 tons, 37.3 %
Fuel, ammunition & stores: 2,232 tons, 17.1 %
Miscellaneous weights: 100 tons, 0.8 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
14,778 lbs / 6,703 Kg = 17.1 x 12.0 " / 305 mm shells or 2.3 torpedoes
Stability (Unstable if below 1.00): 1.05
Metacentric height 3.7 ft / 1.1 m
Roll period: 16.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.78
Seaboat quality (Average = 1.00): 1.17
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.630
Length to Beam Ratio: 4.96 : 1
'Natural speed' for length: 19.54 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 60
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.00 ft / 7.01 m
- Forecastle (18 %): 19.00 ft / 5.79 m
- Mid (70 %): 16.00 ft / 4.88 m (8.00 ft / 2.44 m aft of break)
- Quarterdeck (15 %): 8.00 ft / 2.44 m
- Stern: 8.00 ft / 2.44 m
- Average freeboard: 15.19 ft / 4.63 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 78.8 %
- Above water (accommodation/working, high = better): 106.5 %
Waterplane Area: 22,122 Square feet or 2,055 Square metres
Displacement factor (Displacement / loading): 95 %
Structure weight / hull surface area: 160 lbs/sq ft or 779 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 2.66
- Overall: 1.03
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform