Alba de Tormes (Battle), Iberia CL-AA laid down 1939
Alba de Tormes, laid down 1939
Albuera, laid down 1939
Alcañiz, laid down 1939
Almaraz, laid down 1939
Barrosa, laid down 1940
Bailén, laid down 1940
Bussaco, laid down 1940
Benavente, laid down 1940
Campo Maior, laid down 1940
Castalla, laid down 1940
Castellón, laid down 1940
Chaves, laid down 1940
Nivelle, laid down 1941
Ordal, laid down 1941
Displacement:
4,244 t light; 4,496 t standard; 4,945 t normal; 5,304 t full load
Dimensions: Length overall / water x beam x draught
536.75 ft / 508.53 ft x 49.21 ft x 16.40 ft (normal load)
163.60 m / 155.00 m x 15.00 m x 5.00 m
Armament:
8 - 5.12" / 130 mm guns (4x2 guns), 67.03lbs / 30.40kg shells, 1939 Model
Dual purpose guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 2.24" / 57.0 mm guns (8x2 guns), 5.65lbs / 2.56kg shells, 1939 Model
Breech loading guns in deck mounts with hoists
on side, evenly spread, 4 raised mounts
24 - 0.98" / 25.0 mm guns (12x2 guns), 0.48lbs / 0.22kg shells, 1939 Model
Breech loading guns in deck mounts
on side, evenly spread, 8 raised mounts
Weight of broadside 638 lbs / 289 kg
Shells per gun, main battery: 400
8 - 23.6" / 600 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 0.98" / 25 mm 413.71 ft / 126.10 m 16.40 ft / 5.00 m
Ends: Unarmoured
Main Belt covers 125 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm 1.97" / 50 mm 1.97" / 50 mm
2nd: 0.79" / 20 mm 0.79" / 20 mm 0.79" / 20 mm
3rd: 0.59" / 15 mm 0.59" / 15 mm -
- Armour deck: 0.98" / 25 mm, Conning tower: 2.95" / 75 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 2 shafts, 60,998 shp / 45,504 Kw = 34.00 kts
Range 6,000nm at 15.00 kts
Bunker at max displacement = 807 tons
Complement:
294 - 383
Cost:
£2.598 million / $10.394 million
Distribution of weights at normal displacement:
Armament: 80 tons, 1.6 %
Armour: 741 tons, 15.0 %
- Belts: 267 tons, 5.4 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 160 tons, 3.2 %
- Armour Deck: 295 tons, 6.0 %
- Conning Tower: 18 tons, 0.4 %
Machinery: 1,650 tons, 33.4 %
Hull, fittings & equipment: 1,673 tons, 33.8 %
Fuel, ammunition & stores: 701 tons, 14.2 %
Miscellaneous weights: 100 tons, 2.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,084 lbs / 1,399 Kg = 46.0 x 5.1 " / 130 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 2.0 ft / 0.6 m
Roll period: 14.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.39
Seaboat quality (Average = 1.00): 1.01
Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.422
Length to Beam Ratio: 10.33 : 1
'Natural speed' for length: 25.93 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 35.00 degrees
Stern overhang: 9.84 ft / 3.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.25 ft / 8.00 m
- Forecastle (20 %): 22.97 ft / 7.00 m
- Mid (42 %): 21.33 ft / 6.50 m (13.12 ft / 4.00 m aft of break)
- Quarterdeck (15 %): 13.12 ft / 4.00 m
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 17.34 ft / 5.29 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 125.1 %
- Above water (accommodation/working, high = better): 122.6 %
Waterplane Area: 16,216 Square feet or 1,506 Square metres
Displacement factor (Displacement / loading): 103 %
Structure weight / hull surface area: 63 lbs/sq ft or 307 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.71
- Longitudinal: 1.16
- Overall: 0.75
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Designed primarily as Destroyer leaders, but with a secondary role as AA escorts.
Turrets are based on those used in Danish Valkyrie class cruisers.
Turrets simmed as triples, then added as misc weight, in this case 33 tons.
This post has been edited 2 times, last edit by "Commodore Green" (Feb 27th 2011, 9:51pm)