Empress Amelia Class Battleships

[snip]

Three ships
--IRS Empress Amelia
--IRS Intrepidus
--IRS Consilium [Completes 1926H2]

LBS-21, Imperial Roman Republic Fast Battleship laid down 1921

Displacement:
   46,000 t light; 48,266 t standard; 51,006 t normal; 53,198 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (869.41 ft / 853.02 ft) x 104.99 ft x (31.17 / 32.30 ft)
   (265.00 m / 260.00 m) x 32.00 m  x (9.50 / 9.84 m)

Armament:
      8 - 16.14" / 410 mm 45.0 cal guns - 2,120.85lbs / 962.00kg shells, 110 per gun
     Breech loading guns in turret on barbette mounts, 1915 Model
     4 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      20 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 200 per gun
     Quick firing guns in casemate mounts, 1909 Model
     20 x Single mounts on sides, evenly spread
      10 raised mounts
      4 - 3.94" / 100 mm 45.0 cal guns - 30.86lbs / 14.00kg shells, 200 per gun
     Anti-air guns in deck and hoist mounts, 1915 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      4 - 1.77" / 45.0 mm 50.0 cal guns - 3.31lbs / 1.50kg shells, 350 per gun
     Anti-air guns in deck mounts, 1911 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      10 - 0.26" / 6.5 mm 110.0 cal guns - 0.01lbs / 0.00kg shells, 15,000 per gun
     Machine guns in deck mounts, 1911 Model
     10 x Single mounts on sides, evenly spread
      10 raised mounts
      Weight of broadside 18,823 lbs / 8,538 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.4" / 340 mm   513.35 ft / 156.47 m   18.68 ft / 5.69 m
   Ends:   1.97" / 50 mm   339.67 ft / 103.53 m   13.12 ft / 4.00 m
     Main Belt covers 93 % of normal length
     Main Belt inclined 15.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      2.56" / 65 mm   513.35 ft / 156.47 m   34.45 ft / 10.50 m
   Beam between torpedo bulkheads 85.30 ft / 26.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   17.3" / 440 mm   7.09" / 180 mm      11.8" / 300 mm
   2nd:   3.94" / 100 mm   1.97" / 50 mm      3.94" / 100 mm
   3rd:   0.20" / 5 mm         -         0.98" / 25 mm
   4th:   0.20" / 5 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 4.13" / 105 mm
   Forecastle: 1.38" / 35 mm  Quarter deck: 1.38" / 35 mm

   - Conning towers: Forward 13.39" / 340 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 180,000 shp / 134,280 Kw = 30.46 kts
   Range 8,000nm at 14.00 kts
   Bunker at max displacement = 4,933 tons

Complement:
   1,696 - 2,206

Cost:
   £10.632 million / $42.527 million

Distribution of weights at normal displacement:
   Armament: 3,760 tons, 7.4 %
      - Guns: 3,760 tons, 7.4 %
   Armour: 15,838 tons, 31.1 %
      - Belts: 5,852 tons, 11.5 %
      - Torpedo bulkhead: 1,674 tons, 3.3 %
      - Armament: 3,468 tons, 6.8 %
      - Armour Deck: 4,447 tons, 8.7 %
      - Conning Tower: 397 tons, 0.8 %
   Machinery: 6,198 tons, 12.2 %
   Hull, fittings & equipment: 17,179 tons, 33.7 %
   Fuel, ammunition & stores: 5,006 tons, 9.8 %
   Miscellaneous weights: 3,025 tons, 5.9 %
      - Hull below water: 2,000 tons
      - Hull above water: 250 tons
      - On freeboard deck: 675 tons
      - Above deck: 100 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     70,452 lbs / 31,957 Kg = 33.5 x 16.1 " / 410 mm shells or 10.1 torpedoes
   Stability (Unstable if below 1.00): 1.19
   Metacentric height 7.4 ft / 2.2 m
   Roll period: 16.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.65
   Seaboat quality  (Average = 1.00): 1.10

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a round stern
   Block coefficient (normal/deep): 0.640 / 0.644
   Length to Beam Ratio: 8.13 : 1
   'Natural speed' for length: 29.21 kts
   Power going to wave formation at top speed: 51 %
   Trim (Max stability = 0, Max steadiness = 100): 45
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 5.64 ft / 1.72 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.82 %,  29.53 ft / 9.00 m,  27.07 ft / 8.25 m
      - Forward deck:   40.00 %,  27.07 ft / 8.25 m,  27.07 ft / 8.25 m
      - Aft deck:   20.18 %,  18.04 ft / 5.50 m,  18.04 ft / 5.50 m
      - Quarter deck:   19.00 %,  18.04 ft / 5.50 m,  18.04 ft / 5.50 m
      - Average freeboard:      23.74 ft / 7.24 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 92.6 %
      - Above water (accommodation/working, high = better): 183.5 %
   Waterplane Area: 67,950 Square feet or 6,313 Square metres
   Displacement factor (Displacement / loading): 108 %
   Structure weight / hull surface area: 201 lbs/sq ft or 981 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.99
      - Longitudinal: 1.02
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room

Misc Weight Distribution
-Below Water (2000t)
--1550t Electric Drives
--200t Additional Pumps
--200t Additional Damage Control Equipment
--50t Improved Food & Drink storage
-Above Water (250t)
--40t Improved Officer Accommodations
--40t Improved Crew Accommodations
--70t Additional Damage Control Equipment
--20t Enhanced Ventilation and Crew Comfort
--50t Long Range Wireless (2x)
--30t Construction Reserve
-On Deck (675t)
--375t 1918 Fire Control
--50t Aviation Facilities (2x Recon Plane & 2x Catapults)
--50t Flag Facilities
--50t Enhanced Ventilation and Crew Comfort
--80t Power Assist for Caesemate guns
--10t Short Range Wireless
--35t Construction Reserve
-Above Deck (100t)
--15t Additional Optical Spotting Equipment
--70t Night Fighting Equipment
--15t Improved Signaling Equipment