Numancia, Philippine Ocean Escort laid down 1949
Displacement: 1,390 t light; 1,476 t standard; 1,721 t normal; 1,917 t full load
Dimensions: Length overall / water x beam x draught
355.53 ft / 344.49 ft x 39.37 ft x 10.50 ft (normal load) [108.37 m / 105.00 m x 12.00 m x 3.20 m]
Armament:
4 - 4.53" / 115 mm guns (2x2 guns), 46.40lbs / 21.05kg shells, 1949 Model Dual purpose guns in deck mounts with hoists on centerline ends, evenly spread
8 - 1.38" / 35.0 mm guns (4x2 guns), 1.31lbs / 0.59kg shells, 1949 Model Anti-aircraft guns in deck mounts on side, evenly spread, 2 raised mounts
4 - 0.59" / 15.0 mm guns (2x2 guns), 0.10lbs / 0.05kg shells, 1949 Model Machine guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 196 lbs / 89 kg
Shells per gun, main battery: 450
3 - 24.0" / 610 mm above water torpedoes
Armor:
Gun armor: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.39" / 10 mm 0.39" / 10 mm
2nd: 0.39" / 10 mm 0.39" / 10 mm -
Conning tower: 0.98" / 25 mm
Machinery: Oil fired boilers, steam turbines, Geared drive, 2 shafts, 11,008 shp / 8,212 Kw = 25.00 kts
Range 6,000nm at 16.00 kts
Bunker at max displacement = 441 tons
Complement: 133 - 173
Cost: £0.814 million / $3.255 million
Distribution of weights at normal displacement:
Armament: 25 tons, 1.4 %
Armor: 12 tons, 0.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 9 tons, 0.5 %
- Armor Deck: 0 tons, 0.0 %
- Conning Tower: 3 tons, 0.2 %
Machinery: 266 tons, 15.5 %
Hull, fittings & equipment: 938 tons, 54.5 %
Fuel, ammunition & stores: 331 tons, 19.2 %
Miscellaneous weights: 150 tons, 8.7 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship): 4,084 lbs / 1,852 Kg = 88.0 x 4.5 " / 115 mm shells or 1.2 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 1.6 ft / 0.5 m
Roll period: 13.1 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.25
Seaboat quality (Average = 1.00): 1.59
Hull form characteristics:
Hull has rise forward of midbreak and transom stern
Block coefficient: 0.423
Length to Beam Ratio: 8.75: 1
'Natural speed' for length: 21.64 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 44
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (50 %): 18.04 ft / 5.50 m (11.48 ft / 3.50 m aft of break)
- Quarterdeck (25 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 15.47 ft / 4.72 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 73.6 %
- Above water (accommodation/working, high = better): 156.4 %
Waterplane Area: 8,797 Square feet or 817 Square meters
Displacement factor (Displacement / loading): 193 %
Structure weight / hull surface area: 63 lbs/sq ft or 308 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 3.14
- Overall: 1.10
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
Breakdown of Miscellaneous Weight
Reserved for air warning radar - 20 tons
Reserved for surface search radar - 20 tons
Reserved for fire control radar - 20 tons
Reserved for AS detection equipment - 20 tons
Reserved for Ahead-Thrown AS Weapon - 30 tons
Reserved for AS outfit including DC and K-guns - 40 tons
Numancia – Laid down 1 January 1949; Launched 6 May 1949; Completed 9 November 1949
Magallanes – Laid down 1 January 1949; Launched 6 May 1949; Completed 9 November 1949
Canalejas – Laid down 1 January 1949; Launched 6 May 1949; Completed 9 November 1949
Casco – Laid down 1 January 1949; Launched 6 May 1949; Completed 9 November 1949
Lazaga - Laid down 1 July 1949; Launched 3 November 1949
Cadarso - Laid down 1 July 1949; Launched 3 November 1949
Villaamil - Laid down 1 July 1949; Launched 3 November 1949
Bonifaz - Laid down 1 July 1949; Launched 3 November 1949