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The Santa Ana class was the second purely domestic design produced by Mexico.

Santa Ana, Mexico Battleship laid down 1920 (Engine 1922)Edit

DisplacementEdit

     42,946 t light; 45,571 t standard; 48,000 t normal; 49,944 t full load

DimensionsEdit

     Length (overall / waterline) x beam x draught (normal/deep)
     (723.92 ft / 713.00 ft) x 104.00 ft (Bulges 110.00 ft) x (35.00 / 36.24 ft)
     (220.65 m / 217.32 m) x 31.70 m (Bulges 33.53 m)  x (10.67 / 11.05 m)

ArmamentEdit

     12 - 16.54" / 420 mm 50.0 cal guns - 2,400.00lbs / 1,088.62kg shells, 100 per gun
       Breech loading guns in turret on barbette mounts, 1920 Model
       4 x 3-gun mounts on centreline ends, evenly spread
           2 raised mounts - superfiring
     16 - 5.00" / 127 mm 38.0 cal guns - 59.33lbs / 26.91kg shells, 120 per gun
       Quick firing guns in deck and hoist mounts, 1918 Model
       8 x Twin mounts on sides, evenly spread
     20 - 0.79" / 20.0 mm 45.0 cal guns - 0.24lbs / 0.11kg shells, 600 per gun
       Anti-air guns in deck mounts, 1920 Model
       10 x Twin mounts on sides, evenly spread
     Weight of broadside 29,754 lbs / 13,496 kg

ArmourEdit

     - Belts:		Width (max)	Length (avg)		Height (avg)
       Main:	15.0" / 381 mm	360.00 ft / 109.73 m	17.00 ft / 5.18 m
       Ends:	Unarmoured
           Main Belt covers 78 % of normal length
           Main Belt inclined 18.00 degrees (positive = in)
     
     - Torpedo Bulkhead - Additional damage containing bulkheads:
           4.00" / 102 mm	360.00 ft / 109.73 m	34.00 ft / 10.36 m
       Beam between torpedo bulkheads 97.00 ft / 29.57 m
     
     - Hull Bulges:
           1.00" / 25 mm	360.00 ft / 109.73 m	34.00 ft / 10.36 m
     
     - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
       Main:	18.0" / 457 mm	11.0" / 279 mm		14.0" / 356 mm
       2nd:	2.00" / 51 mm	1.00" / 25 mm		1.00" / 25 mm
     
     - Armoured deck - single deck:
       For and Aft decks: 7.00" / 178 mm
       Forecastle: 1.00" / 25 mm  Quarter deck: 1.00" / 25 mm
     
     - Conning towers: Forward 14.00" / 356 mm, Aft 3.00" / 76 mm

MachineryEdit

     Oil fired boilers, steam turbines, 
     Geared drive, 4 shafts, 52,835 shp / 39,415 Kw = 22.00 kts
     Range 9,000nm at 13.00 kts
     Bunker at max displacement = 4,373 tons

ComplementEdit

     1,620 - 2,107

CostEdit

     £11.356 million / $45.426 million

Distribution of weights at normal displacementEdit

     Armament: 6,397 tons, 13.3 %
     - Guns: 6,397 tons, 13.3 %
     Armour: 18,033 tons, 37.6 %
       - Belts: 4,214 tons, 8.8 %
       - Torpedo bulkhead: 1,812 tons, 3.8 %
       - Bulges: 453 tons, 0.9 %
       - Armour Deck: 6,014 tons, 12.5 %
       - Conning Towers: 484 tons, 1.0 %
     Machinery: 1,792 tons, 3.7 %
     Hull, fittings & equipment: 16,722 tons, 34.8 %
     Fuel, ammunition & stores: 5,054 tons, 10.5 %
     Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping abilityEdit

     Survivability (Non-critical penetrating hits needed to sink ship):
      58,469 lbs / 26,521 Kg = 25.9 x 16.5 " / 420 mm shells or 8.7 torpedoes
     Stability (Unstable if below 1.00): 1.04
     Metacentric height 5.7 ft / 1.8 m
     Roll period: 19.3 seconds
     Steadiness	- As gun platform (Average = 50 %): 62 %
                       - Recoil effect (Restricted arc if above 1.00): 1.01
     Seaboat quality  (Average = 1.00): 1.32

Hull form characteristicsEdit

     Hull has a flush deck,
      a normal bow and a cruiser stern
     Block coefficient (normal/deep): 0.612 / 0.615
     Length to Beam Ratio: 6.48 : 1
     'Natural speed' for length: 26.70 kts
     Power going to wave formation at top speed: 41 %
     Trim (Max stability = 0, Max steadiness = 100): 47
     Bow angle (Positive = bow angles forward): 20.00 degrees
     Stern overhang: 0.00 ft / 0.00 m
     Freeboard (% = length of deck as a percentage of waterline length):
                                   Fore end,	 Aft end
       - Forecastle:	20.00 %,  30.00 ft / 9.14 m,  20.00 ft / 6.10 m
       - Forward deck:	35.00 %,  20.00 ft / 6.10 m,  20.00 ft / 6.10 m
       - Aft deck:	30.00 %,  20.00 ft / 6.10 m,  20.00 ft / 6.10 m
       - Quarter deck:	15.00 %,  20.00 ft / 6.10 m,  20.00 ft / 6.10 m
       - Average freeboard:		20.80 ft / 6.34 m

Ship space, strength and commentsEdit

     Space	- Hull below water (magazines/engines, low = better): 74.2 %
               - Above water (accommodation/working, high = better): 128.9 %
     Waterplane Area: 54,845 Square feet or 5,095 Square metres
     Displacement factor (Displacement / loading): 95 %
     Structure weight / hull surface area: 250 lbs/sq ft or 1,218 Kg/sq metre
     Hull strength (Relative):
           - Cross-sectional: 0.96
           - Longitudinal: 1.51
           - Overall: 1.00
     Excellent machinery, storage, compartmentation space
     Excellent accommodation and workspace room
     Good seaboat, rides out heavy weather easily

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