Iberia Fortress Project

[miketr]

Straight Battery, Iberia Coastal Defense laid down 1907

Displacement:
   -438 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:
      4 - 9.84" / 250 mm guns (2x2 guns), 476.75lbs / 216.25kg shells, 1907 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      6 - 5.91" / 150 mm guns in single mounts, 102.98lbs / 46.71kg shells, 1907 Model
     Breech loading guns in turrets (on barbettes)
     on side, all amidships
   Weight of broadside 2,525 lbs / 1,145 kg
   Shells per gun, main battery: 300

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   10.0" / 254 mm   8.00" / 203 mm      8.00" / 203 mm
   2nd:   2.00" / 51 mm   2.00" / 51 mm      2.00" / 51 mm

Machinery:
   Immobile floating battery

Complement:
   0 - 0

Cost:
   £0.250 million / $0.999 million

Distribution of weights at normal displacement:
   Armament: 316 tons, 0.0 %
   Armour: 326 tons, 0.0 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 326 tons, 0.0 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 0 tons, 0.0 %
   Hull, fittings & equipment: -1,080 tons, 0.0 %
   Fuel, ammunition & stores: 438 tons, 0.0 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     0 lbs / 0 Kg = 0.0 x 9.8 " / 250 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: 0.550
   Length to Beam Ratio: 0.00 : 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): Infinity
      - Above water (accommodation/working, high = better): NaN
   Waterplane Area: 0 Square feet or 0 Square metres
   Displacement factor (Displacement / loading): 0 %
   Structure weight / hull surface area: -Infinity lbs/sq ft or -Infinity 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

[miketr]

Locations of Batteries

Each Battery is to be of the standard type.

Four 250mm guns in two twin turrets
Six 150mm quick fire guns in single mounts

Locations C & D, both are on the peninsula, C faces West and D faces East.

[The Rock Doctor]

I've included smaller quick-firing guns in my forts for protection against troop landings - 15 cm is overkill for a row-boat, and might not have sufficient rate of fire if deailng with a serious landing effort.

[P3D]

I'd put the 6" guns in open mounts.

[miketr]

Take 3... Had the 250mm guns as in single turrets and should have been 2 twins.

Strait Battery, Iberia Coastal Defense laid down 1907

Displacement:
   -455 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:
      4 - 9.84" / 250 mm guns (2x2 guns), 476.75lbs / 216.25kg shells, 1907 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      6 - 5.91" / 150 mm guns in single mounts, 102.98lbs / 46.71kg shells, 1907 Model
     Breech loading guns in deck mounts
     on side, all amidships
      6 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1907 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 2,602 lbs / 1,180 kg
   Shells per gun, main battery: 300

Armour:
   - 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   5.00" / 127 mm            -
   3rd:   2.00" / 51 mm   2.00" / 51 mm            -

Machinery:
   Immobile floating battery

Complement:
   0 - 0

Cost:
   £0.257 million / $1.029 million

Distribution of weights at normal displacement:
   Armament: 325 tons, 0.0 %
   Armour: 441 tons, 0.0 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 441 tons, 0.0 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 0 tons, 0.0 %
   Hull, fittings & equipment: -1,221 tons, 0.0 %
   Fuel, ammunition & stores: 455 tons, 0.0 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     0 lbs / 0 Kg = 0.0 x 9.8 " / 250 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: 0.550
   Length to Beam Ratio: 0.00 : 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): Infinity
      - Above water (accommodation/working, high = better): NaN
   Waterplane Area: 0 Square feet or 0 Square metres
   Displacement factor (Displacement / loading): 0 %
   Structure weight / hull surface area: -Infinity lbs/sq ft or -Infinity 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

[miketr]

Now if I understand the cost correctly...

Cost:
£0.257 million
Armament: 325 tons, 0.0 %
Armour: 485 tons, 0.0 %

So the total cost to build is $2.57 and  (325+485)x2 = 1.62 BP per fort.

Michael

[P3D]

$2.57 and 0.81 BP for the fort simmed, and another $0.81 to build all the concrete emplacements.