Imperial Roman Republic 1927H2

[snip]

Few quick highlights, in no real order

--The final B-Class Submarines leave service to be scrapped.
--Both the Triumphus class Battleships, the last pre-ABG, also head to the breakers.
--Some techs complete; 1922 Night Fighting, 1918 Mine Warfare, 1925 Mech, 1925 Army.
--Finish another yearly batch of light ships.
--The usual trickle of LAD points

[snip]

A refurbishment of the Praeventores class battleships. The oldest class mounting the 340L45, this update stops short of a major reconstruction as the class has some issues with deck space due to its all-main-deck turrets. However, it is viewed that with updating these ships can serve as the heavy anchor of a station squadron, likely to be the fleet based out of Havana. Features a refreshed 340L45 to fire a Superheavy shell.

Praeventores, Imperial Roman Republic Battleship laid down 1909 (Engine 1927)

Displacement:
   25,468 t light; 27,090 t standard; 28,132 t normal; 28,966 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (633.20 ft / 623.36 ft) x 88.58 ft x (26.25 / 26.92 ft)
   (193.00 m / 190.00 m) x 27.00 m  x (8.00 / 8.20 m)

Armament:
      12 - 13.39" / 340 mm 45.0 cal guns - 1,450.64lbs / 658.00kg shells, 91 per gun
     Breech loading guns in turret on barbette mounts, 1927 Model
     4 x 3-gun mounts on centreline, evenly spread
      16 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 175 per gun
     Quick firing guns in casemate mounts, 1909 Model
     16 x Single mounts on sides, evenly spread
      16 hull mounts in casemates- Limited use in heavy seas
      4 - 3.54" / 90.0 mm 50.0 cal guns - 20.94lbs / 9.50kg shells, 250 per gun
     Anti-air guns in deck and hoist mounts, 1926 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      16 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
     Anti-air guns in deck mounts, 1926 Model
     4 x Quad mounts on centreline, evenly spread
      4 raised mounts
      10 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
     Machine guns in deck mounts, 1925 Model
     10 x Single mounts on sides, evenly spread
      10 raised mounts
      Weight of broadside 18,879 lbs / 8,563 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.6" / 320 mm   405.18 ft / 123.50 m   18.04 ft / 5.50 m
   Ends:   1.97" / 50 mm   218.14 ft / 66.49 m   9.84 ft / 3.00 m
   Upper:   1.97" / 50 mm   405.18 ft / 123.50 m   9.02 ft / 2.75 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.57" / 40 mm   405.18 ft / 123.50 m   26.25 ft / 8.00 m
   Beam between torpedo bulkheads 78.74 ft / 24.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.4" / 340 mm   7.09" / 180 mm      11.0" / 280 mm
   2nd:   3.94" / 100 mm   0.98" / 25 mm      1.97" / 50 mm
   3rd:   0.20" / 5 mm         -         0.98" / 25 mm
   4th:   0.20" / 5 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 4.53" / 115 mm
   Forecastle: 1.38" / 35 mm  Quarter deck: 1.38" / 35 mm

   - Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 36,000 shp / 26,856 Kw = 21.35 kts
   Range 4,448nm at 14.00 kts
   Bunker at max displacement = 1,876 tons

Complement:
   1,085 - 1,411

Cost:
   £2.500 million / $9.999 million

Distribution of weights at normal displacement:
   Armament: 3,402 tons, 12.1 %
      - Guns: 3,402 tons, 12.1 %
   Armour: 10,895 tons, 38.7 %
      - Belts: 4,473 tons, 15.9 %
      - Torpedo bulkhead: 620 tons, 2.2 %
      - Armament: 2,419 tons, 8.6 %
      - Armour Deck: 3,187 tons, 11.3 %
      - Conning Tower: 196 tons, 0.7 %
   Machinery: 1,136 tons, 4.0 %
   Hull, fittings & equipment: 8,945 tons, 31.8 %
   Fuel, ammunition & stores: 2,664 tons, 9.5 %
   Miscellaneous weights: 1,090 tons, 3.9 %
      - Hull below water: 500 tons
      - Hull above water: 100 tons
      - On freeboard deck: 450 tons
      - Above deck: 40 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     46,154 lbs / 20,935 Kg = 38.5 x 13.4 " / 340 mm shells or 7.2 torpedoes
   Stability (Unstable if below 1.00): 1.29
   Metacentric height 6.6 ft / 2.0 m
   Roll period: 14.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.78
   Seaboat quality  (Average = 1.00): 1.36

Hull form characteristics:
   Hull has low quarterdeck ,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.679 / 0.682
   Length to Beam Ratio: 7.04 : 1
   'Natural speed' for length: 24.97 kts
   Power going to wave formation at top speed: 43 %
   Trim (Max stability = 0, Max steadiness = 100): 37
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 4.92 ft / 1.50 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Forward deck:   30.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Aft deck:   35.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Quarter deck:   15.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Average freeboard:      17.51 ft / 5.34 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 70.9 %
      - Above water (accommodation/working, high = better): 143.9 %
   Waterplane Area: 43,447 Square feet or 4,036 Square metres
   Displacement factor (Displacement / loading): 100 %
   Structure weight / hull surface area: 182 lbs/sq ft or 889 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.30
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Good seaboat, rides out heavy weather easily

New Engines: 1136t (+285t Electric Drives)

Range Recalculated to 4448@14knts

Refreshed 340/45 firing 658kg shell (reduced to 91rpg)
Remove 75mm guns
Add 90mm AA
Add 28mm AA (one quad per turret top)
Add 7.5mm MMG

New End and Upper Belts
New Decks

Trim Adjusted

Additional MISC weight (-285t Electric Drives)

Costs
Arms & Machinery
New Engines: 1.43BP/$2.86
New Guns: 3.41BP/$6.82

Armor & FMW
New End Belts: .156
New Upper Belts: .313
New Decks: 3.19
MISC Weight: 1.09

Hull, Fittings, & Equipment
Trim Change: 0BP/$5.1

Total Materials Costs: $19.53 / 9.59BP

Total Program Cost [Both ships] $49.26 / 19.18BP

[snip]

Next on the refit block is the Thibault D'Aramitz class. These older cruisers also undergo replacement of the torpedoes and secondary guns with a modern AA battery and floatplane. Additionally, the Flag facilities are expanded at the expense of the Marine accommodations.

Thibault D'Aramitz (1927 Refit), Imperial Roman Republic Cruiser laid down 1913

Displacement:
   8,470 t light; 8,791 t standard; 9,904 t normal; 10,795 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (617.69 ft / 606.96 ft) x 65.62 ft x (19.69 / 20.92 ft)
   (188.27 m / 185.00 m) x 20.00 m  x (6.00 / 6.38 m)

Armament:
      8 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 210 per gun
     Quick firing guns in deck and hoist mounts, 1909 Model
     4 x Twin mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      6 - 2.24" / 57.0 mm 43.0 cal guns - 5.52lbs / 2.50kg shells, 500 per gun
     Anti-air guns in deck mounts, 1926 Model
     6 x Single mounts on sides, evenly spread
      16 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
     Anti-air guns in deck mounts, 1926 Model
     4 x Quad mounts on sides, evenly spread
      4 raised mounts
      8 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
     Machine guns in deck mounts, 1917 Model
     8 x Single mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 733 lbs / 332 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1.97" / 50 mm   394.52 ft / 120.25 m   9.84 ft / 3.00 m
   Ends:   1.18" / 30 mm   212.40 ft / 64.74 m   9.84 ft / 3.00 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   0.20" / 5 mm      0.98" / 25 mm
   2nd:   0.20" / 5 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 2.36" / 60 mm
   Forecastle: 1.18" / 30 mm  Quarter deck: 1.18" / 30 mm

   - Conning towers: Forward 3.54" / 90 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 64,000 shp / 47,744 Kw = 30.10 kts
   Range 7,000nm at 14.00 kts
   Bunker at max displacement = 2,004 tons

Complement:
   496 - 645

Cost:
   £0.801 million / $3.204 million

Distribution of weights at normal displacement:
   Armament: 201 tons, 2.0 %
      - Guns: 201 tons, 2.0 %
   Armour: 1,463 tons, 14.8 %
      - Belts: 405 tons, 4.1 %
      - Armament: 15 tons, 0.1 %
      - Armour Deck: 1,008 tons, 10.2 %
      - Conning Tower: 35 tons, 0.4 %
   Machinery: 2,508 tons, 25.3 %
   Hull, fittings & equipment: 3,413 tons, 34.5 %
   Fuel, ammunition & stores: 1,434 tons, 14.5 %
   Miscellaneous weights: 885 tons, 8.9 %
      - Hull below water: 640 tons
      - Hull above water: 50 tons
      - On freeboard deck: 180 tons
      - Above deck: 15 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     12,946 lbs / 5,872 Kg = 154.6 x 5.5 " / 140 mm shells or 1.7 torpedoes
   Stability (Unstable if below 1.00): 1.39
   Metacentric height 4.8 ft / 1.4 m
   Roll period: 12.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.12
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.442 / 0.453
   Length to Beam Ratio: 9.25 : 1
   'Natural speed' for length: 24.64 kts
   Power going to wave formation at top speed: 51 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 3.87 ft / 1.18 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  18.86 ft / 5.75 m,  16.40 ft / 5.00 m
      - Forward deck:   30.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Aft deck:   35.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Quarter deck:   15.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      16.60 ft / 5.06 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 98.8 %
      - Above water (accommodation/working, high = better): 159.0 %
   Waterplane Area: 25,241 Square feet or 2,345 Square metres
   Displacement factor (Displacement / loading): 121 %
   Structure weight / hull surface area: 94 lbs/sq ft or 461 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
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Misc Distribution
--Below Water (640t)
----627t Electric Drives
----10t Additional Pumps
----3t Construction Reserve
--Above Water (50t)
----15t Improved Crew Accommodations
----25t Improved Officer Accommodations
----10t Short Range Wireless
--On Deck (200t)
----21t 1918 Fire Control
----25t Armed Recon Floatplane
----5t Catapult
----25t Long Range Wireless
----50t Additional Stores
----20t Admiralty Accommodations
----30t Flag Facilities
----4t Construction Reserve
--Above Deck (15t)
----10t Improved Acquisition Structures
----5t Additional Searchlights

Cost: .055 Cash and BP.
--44t New Misc Weight
--11t New Armament