Sofia (ex-PRS
Angeles)
Manila-class Predreadnought, laid down 1898
Displacement:
11,132 t light; 11,661 t standard; 14,486 t normal; 16,747 t full load
Dimensions: Length overall / water x beam x draught
394.00 ft / 394.00 ft x 73.00 ft x 26.51 ft (normal load)
120.09 m / 120.09 m x 22.25 m x 8.08 m
Armament:
4 - 12.00" / 305 mm guns (2x2 guns), 850.00lbs / 385.55kg shells, 1898 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
16 - 6.00" / 152 mm guns in single mounts, 100.00lbs / 45.36kg shells, 1898 Model
Breech loading guns in casemate mounts
on side, evenly spread
10 guns in hull casemates - Limited use in all but light seas
6 - 3.00" / 76.2 mm guns in single mounts, 12.00lbs / 5.44kg shells, 1898 Model
Quick firing guns in deck mounts
on side, all amidships, all raised mounts - superfiring
4 - 1.57" / 40.0 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1926 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
8 - 0.54" / 13.7 mm guns in single mounts, 0.11lbs / 0.05kg shells, 1927 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 5,081 lbs / 2,305 kg
Shells per gun, main battery: 80
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 10.0" / 254 mm 228.52 ft / 69.65 m 10.25 ft / 3.12 m
Ends: 6.00" / 152 mm 165.46 ft / 50.43 m 10.25 ft / 3.12 m
Upper: 8.00" / 203 mm 228.52 ft / 69.65 m 8.00 ft / 2.44 m
Main Belt covers 89 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.0" / 254 mm 4.70" / 119 mm 10.0" / 254 mm
2nd: 4.00" / 102 mm - 3.00" / 76 mm
3rd: 0.79" / 20 mm - -
- Armour deck: 2.00" / 51 mm, Conning tower: 10.00" / 254 mm
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 shafts, 12,897 ihp / 9,621 Kw = 17.50 kts
Range 3,900nm at 17.50 kts (Bunkerage = 5,086 tons)
Complement:
659 - 858
Cost:
£1.269 million / $5.075 million
Distribution of weights at normal displacement:
Armament: 659 tons, 4.6 %
Armour: 3,898 tons, 26.9 %
- Belts: 2,137 tons, 14.8 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 806 tons, 5.6 %
- Armour Deck: 826 tons, 5.7 %
- Conning Tower: 128 tons, 0.9 %
Machinery: 2,324 tons, 16.0 %
Hull, fittings & equipment: 4,205 tons, 29.0 %
Fuel, ammunition & stores: 3,354 tons, 23.2 %
Miscellaneous weights: 46 tons, 0.3 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
14,515 lbs / 6,584 Kg = 16.8 x 12.0 " / 305 mm shells or 2.0 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 4.4 ft / 1.4 m
Roll period: 14.5 seconds
Steadiness - As gun platform (Average = 50 %): 83 %
- Recoil effect (Restricted arc if above 1.00): 0.38
Seaboat quality (Average = 1.00): 1.31
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.665
Length to Beam Ratio: 5.40 : 1
'Natural speed' for length: 19.85 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 63
Bow angle (Positive = bow angles forward): -5.00 degrees
Stern overhang: -3.28 ft / -1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 16.01 ft / 4.88 m
- Forecastle (21 %): 12.99 ft / 3.96 m
- Mid (50 %): 12.99 ft / 3.96 m
- Quarterdeck (21 %): 12.99 ft / 3.96 m
- Stern: 12.99 ft / 3.96 m
- Average freeboard: 13.25 ft / 4.04 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 86.4 %
- Above water (accommodation/working, high = better): 83.9 %
Waterplane Area: 22,337 Square feet or 2,075 Square metres
Displacement factor (Displacement / loading): 104 %
Structure weight / hull surface area: 135 lbs/sq ft or 660 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.04
- Longitudinal: 2.07
- Overall: 1.12
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily