Irish Coastal Battery

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Battery Alpha, Republic of ireland Coastal Defense laid down 1913

Displacement:
   -414 t light; 0 t standard; 0 t normal; 0 t full load

Dimensions: Length overall / water x beam x draught
   0.00 ft / 0.00 ft x 0.00 ft x 0.00 ft (normal load)
   0.00 m / 0.00 m x 0.00 m  x 0.00 m

Armament:
      2 - 11.00" / 279 mm guns (1x2 guns), 665.50lbs / 301.87kg shells, 1902 Model
     Breech loading guns in a turret (on a barbette)
     on centreline amidships
      8 - 6.00" / 152 mm guns (4x2 guns), 108.00lbs / 48.99kg shells, 1913 Model
     Breech loading guns in deck mounts
     on side, all amidships
      8 - 3.00" / 76.2 mm guns (4x2 guns), 13.50lbs / 6.12kg shells, 1902 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 2,303 lbs / 1,045 kg
   Shells per gun, main battery: 300
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   10.0" / 254 mm   8.00" / 203 mm      8.00" / 203 mm
   2nd:   5.00" / 127 mm   4.00" / 102 mm            -
   3rd:   3.00" / 76 mm   2.00" / 51 mm            -

Machinery:
   Immobile floating battery

Complement:
   0 - 0

Cost:
   £0.248 million / $0.992 million

Distribution of weights at normal displacement:
   Armament: 288 tons, 0.0 %
   Machinery: 0 tons, 0.0 %
   Hull, fittings & equipment: NaN tons, 0.0 %
   Fuel, ammunition & stores: 414 tons, 0.0 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     NaN lbs / NaN Kg = NaN x 11.0 " / 279 mm shells or NaN torpedoes
   Stability (Unstable if below 1.00): NaN
   Metacentric height NaN ft / NaN m
   Roll period: NaN seconds
   Steadiness   - As gun platform (Average = 50 %): NaN %
         - Recoil effect (Restricted arc if above 1.00): NaN
   Seaboat quality  (Average = 1.00): NaN

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: NaN
   Length to Beam Ratio: NaN : 1
   'Natural speed' for length: 0.00 kts
   Power going to wave formation at top speed: 0 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      0.00 ft / 0.00 m
      - Forecastle (20 %):   0.00 ft / 0.00 m
      - Mid (50 %):      0.00 ft / 0.00 m
      - Quarterdeck (15 %):   0.00 ft / 0.00 m
      - Stern:      0.00 ft / 0.00 m
      - Average freeboard:   0.00 ft / 0.00 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): NaN
      - Above water (accommodation/working, high = better): NaN
   Waterplane Area: NaN Square feet or NaN Square metres
   Displacement factor (Displacement / loading): NaN
   Structure weight / hull surface area: NaN lbs/sq ft or NaN Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: NaN
      - Longitudinal: NaN
      - Overall: NaN
   Hull space for machinery, storage, compartmentation is extremely poor
   Room for accommodation and workspaces is extremely poor



Cost:
£0.248 million
Armament: 288 tons
Armour: 335 tons

So the cost to build is $2.48 and 1.246 BP per fort