Hull strength (Relative):
- Cross-sectional: 0.41
Uh-oh...
Here's my take on a 1931 version of the design. :-) The twin mount will be in 'B' position...
Filipino Piquero-class destroyer, laid down 1931
Displacement:
1,490 t light; 1,576 t standard; 1,715 t normal; 1,825 t full load
Dimensions: Length overall / water x beam x draught
363.82 ft / 351.05 ft x 35.10 ft x 11.88 ft (normal load)
110.89 m / 107.00 m x 10.70 m x 3.62 m
Armament:
5 - 5.12" / 130 mm guns (4 mounts), 70.00lbs / 31.75kg shells, 1931 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread, 3 raised mounts - superfiring
2 - 2.24" / 57.0 mm guns (1x2 guns), 6.00lbs / 2.72kg shells, 1931 Model
Dual purpose guns in a deck mount
on centreline amidships, all raised guns - superfiring
2 - 1.57" / 40.0 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1931 Model
Anti-aircraft guns in deck mounts
on side, all forward
3 - 0.98" / 25.0 mm guns (1x3 guns), 0.57lbs / 0.26kg shells, 1931 Model
Breech loading guns in a deck mount
on centreline aft, all raised guns - superfiring
8 - 0.54" / 13.7 mm guns (4x2 guns), 0.08lbs / 0.04kg shells, 1931 Model
Breech loading guns in deck mounts
on side ends, evenly spread
Weight of broadside 368 lbs / 167 kg
Shells per gun, main battery: 250
6 - 24.0" / 610 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.57" / 40 mm - -
2nd: 0.98" / 25 mm - -
4th: 0.59" / 15 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 35,725 shp / 26,651 Kw = 33.75 kts
Range 5,300nm at 12.00 kts (Bunkerage = 248 tons)
Complement:
133 - 173
Cost:
£0.893 million / $3.573 million
Distribution of weights at normal displacement:
Armament: 44 tons, 2.6 %
Armour: 25 tons, 1.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 25 tons, 1.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 825 tons, 48.1 %
Hull, fittings & equipment: 570 tons, 33.2 %
Fuel, ammunition & stores: 225 tons, 13.1 %
Miscellaneous weights: 25 tons, 1.5 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
462 lbs / 209 Kg = 6.9 x 5.1 " / 130 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.06
Metacentric height 1.2 ft / 0.4 m
Roll period: 13.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.81
Seaboat quality (Average = 1.00): 0.92
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.410
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 21.64 kts
Power going to wave formation at top speed: 68 %
Trim (Max stability = 0, Max steadiness = 100): 76
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.34 ft / 6.20 m
- Forecastle (20 %): 17.06 ft / 5.20 m
- Mid (50 %): 13.78 ft / 4.20 m
- Quarterdeck (15 %): 13.78 ft / 4.20 m
- Stern: 13.78 ft / 4.20 m
- Average freeboard: 15.19 ft / 4.63 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 178.1 %
- Above water (accommodation/working, high = better): 92.6 %
Waterplane Area: 7,922 Square feet or 736 Square metres
Displacement factor (Displacement / loading): 68 %
Structure weight / hull surface area: 38 lbs/sq ft or 184 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.93
- Overall: 0.57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather