Imperial Roman Republic 1927H1

[snip]

Quick summery

--Complete BP 40
--Start six more colonial IC
--Begin refresh of the 340L45 quad turret to accommodate the superheavy shell refresh of its guns
--Begin development of an octuple AA mount for the 28L55
--Start 1920 Amphib tech
--Laydown following ships
---1xGPC-26
---2xHFD-26
---4xGFD-26
---1xSLS-26
---2xSL-26
---15xF-Table MTB
---2x 1920-750t Subs
--Complete following ships
---1xASC-26
---1xGPC-26
--Refit following ships
---IRS Totanis (completes in 1927H2)
---4x Lauri class Cruisers
---5x Rainier Marion class Destroyers
--One each Land, Air, Deployment points

[snip]

The Totanis class is being taken in hand for a Secondary Battery Modernization. One of the ships with a combination of 140mm and 100mm guns in a anti-light ships setup, the configuration has been found to be less than reliable due to the sheer amount of shell splashes. Totanis is being taken in hand first as the other classes with this heavy secondary setup are in need of more extensive rebuilds. This refurbishment completely overhauls the secondary battery along the lines of LBS-26; the 140mm guns are now in deck mounts with hoists, the Anti-Aircraft Battery has been brought up to modern standards. The Fire Control System is also replaced wholesale to accommodate the changes.

Totanis (1927), Imperial Roman Battleship laid down 1916

Displacement:
   34,530 t light; 36,579 t standard; 38,910 t normal; 40,775 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (685.71 ft / 672.57 ft) x 101.71 ft x (29.53 / 30.75 ft)
   (209.00 m / 205.00 m) x 31.00 m  x (9.00 / 9.37 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, 175 per gun
     Quick firing guns in deck and hoist mounts, 1909 Model
     6 x Twin mounts on sides, aft evenly spread
     4 x Twin mounts on sides, forward evenly spread
      6 - 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
     6 x Single mounts on sides, aft evenly spread
      6 raised mounts
      24 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 5,000 per gun
     Anti-air guns in deck and hoist mounts, 1926 Model
     6 x Quad mounts on sides, 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 18,830 lbs / 8,541 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.6" / 345 mm   437.17 ft / 133.25 m   18.04 ft / 5.50 m
   Ends:   1.97" / 50 mm   235.37 ft / 71.74 m   13.12 ft / 4.00 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      3.15" / 80 mm   437.17 ft / 133.25 m   31.17 ft / 9.50 m
   Beam between torpedo bulkheads 82.02 ft / 25.00 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:   1.97" / 50 mm   0.59" / 15 mm      3.94" / 100 mm
   3rd:   0.20" / 5 mm         -         0.98" / 25 mm
   4th:   0.20" / 5 mm         -         0.59" / 15 mm

   - Armoured deck - multiple decks:
   For and Aft decks: 3.35" / 85 mm
   Forecastle: 1.38" / 35 mm  Quarter deck: 1.38" / 35 mm

   - Conning towers: Forward 13.78" / 350 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 70,000 shp / 52,220 Kw = 24.23 kts
   Range 7,000nm at 14.00 kts
   Bunker at max displacement = 4,196 tons

Complement:
   1,384 - 1,800

Cost:
   £5.537 million / $22.147 million

Distribution of weights at normal displacement:
   Armament: 3,869 tons, 9.9 %
      - Guns: 3,869 tons, 9.9 %
   Armour: 13,270 tons, 34.1 %
      - Belts: 4,924 tons, 12.7 %
      - Torpedo bulkhead: 1,588 tons, 4.1 %
      - Armament: 3,444 tons, 8.9 %
      - Armour Deck: 2,973 tons, 7.6 %
      - Conning Tower: 341 tons, 0.9 %
   Machinery: 2,608 tons, 6.7 %
   Hull, fittings & equipment: 13,103 tons, 33.7 %
   Fuel, ammunition & stores: 4,380 tons, 11.3 %
   Miscellaneous weights: 1,680 tons, 4.3 %
      - Hull below water: 850 tons
      - Hull above water: 150 tons
      - On freeboard deck: 630 tons
      - Above deck: 50 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     58,765 lbs / 26,655 Kg = 27.9 x 16.1 " / 410 mm shells or 9.9 torpedoes
   Stability (Unstable if below 1.00): 1.21
   Metacentric height 7.3 ft / 2.2 m
   Roll period: 15.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.71
   Seaboat quality  (Average = 1.00): 1.35

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a round stern
   Block coefficient (normal/deep): 0.674 / 0.679
   Length to Beam Ratio: 6.61 : 1
   'Natural speed' for length: 25.93 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 37
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: 5.45 ft / 1.66 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  28.71 ft / 8.75 m,  28.71 ft / 8.75 m
      - Forward deck:   15.00 %,  28.71 ft / 8.75 m,  28.71 ft / 8.75 m
      - Aft deck:   50.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Quarter deck:   15.00 %,  19.69 ft / 6.00 m,  19.69 ft / 6.00 m
      - Average freeboard:      22.84 ft / 6.96 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 83.6 %
      - Above water (accommodation/working, high = better): 160.5 %
   Waterplane Area: 53,573 Square feet or 4,977 Square metres
   Displacement factor (Displacement / loading): 104 %
   Structure weight / hull surface area: 202 lbs/sq ft or 987 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.46
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Good seaboat, rides out heavy weather easily

Misc Weight Distribution
-Below Water (850t)
--652t Electric Drives
--100t Additional Pumps
--40t Additional Damage Control Equipment
--8t Construction Reserve
-Above Water (200t)
--40t Improved Officer Accommodations
--40t Improved Crew Accommodations
--70t Additional Damage Control Equipment
--20t Enhanced Ventilation and Crew Comfort
--20t Short-Range Wireless (x2)
--10t Construction Reserve
-On Deck (630t)
--387t 1918 Fire Control
--35t Flag Facilities
--40t Admiralty Accommodations
--25t Long Range Wireless
--20t Enhanced Ventilation and Crew Comfort
--40t Night Fighting Equipment
--50t Additional Damage Control Equipment
--25t Huelsmeyre Equipment
--8t Construction Reserve
-Above Deck (50t)
--20t Additional Optical Spotting Equipment
--15t Night Fighting Equipment
--15t Improved Signaling Equipment


Main Battery arranged A(B)[SS](X)Y with B superfiring A and X superfiring Y.

Armored deck broken up as 70mm main deck over Fore/Aft with a 15mm splinter deck. End armor is uniform 35mm deck.

Bunker 4196

Cruise Speeds/SpringSharp Range/True Range
10knts/14665nm
14knts/7000nm
20knts/2888nm
24knts/1742nm

Time at Top Speed:  72.58 Hours
Fastest Speed From Brest to Havana (3943nm): 17.743knts for 222.23h transit

Base Cost - $6.9
Armament 527t (.527 BP, $1.054)
Misc Weight 386t New 1918 Fire Control (.386 BP $0.386)
Total Cost - .913 BP and $8.34

[snip]

The Isca class cruisers are due for an Anti-Aircraft battery refresh. This refit replaces the torpedoes and old 100mm guns with a modern battery of 57mm and 28mm guns. Due to the extremely tight build of these ships, they are unable to carry the same ammunition loads as more modern ships. The refit also adds a single catapult with accompanying armed recon plane.

GPC-17 (1927 Refit), Imperial Roman Republic Cruiser laid down 1917

Displacement:
   7,994 t light; 8,287 t standard; 9,332 t normal; 10,168 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (554.46 ft / 541.34 ft) x 57.41 ft x (19.69 / 21.05 ft)
   (169.00 m / 165.00 m) x 17.50 m  x (6.00 / 6.42 m)

Armament:
      6 - 7.09" / 180 mm 50.0 cal guns - 187.39lbs / 85.00kg shells, 150 per gun
     Breech loading guns in turret on barbette mounts, 1915 Model
     3 x 2-gun mounts on centreline ends, majority forward
      1 raised mount - superfiring
      6 - 2.24" / 57.0 mm 43.0 cal guns - 5.52lbs / 2.50kg shells, 250 per gun
     Anti-air guns in deck mounts, 1926 Model
     6 x Single mounts on sides, aft evenly spread
      6 raised mounts
      8 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 2,400 per gun
     Anti-air guns in deck mounts, 1926 Model
     2 x Quad mounts on sides, forward deck centre
      2 raised mounts
      8 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 10,000 per gun
     Machine guns in deck mounts, 1917 Model
     8 x Single mounts on sides, evenly spread
      Weight of broadside 1,163 lbs / 528 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.15" / 80 mm   396.69 ft / 120.91 m   16.40 ft / 5.00 m
   Ends:   Unarmoured
     Main Belt covers 113 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.36" / 60 mm   1.18" / 30 mm      2.36" / 60 mm
   2nd:   0.20" / 5 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 1.18" / 30 mm
   Forecastle: 0.00" / 0 mm  Quarter deck: 1.18" / 30 mm

   - Conning towers: Forward 3.94" / 100 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 78,000 shp / 58,188 Kw = 31.23 kts
   Range 8,050nm at 14.00 kts
   Bunker at max displacement = 1,881 tons

Complement:
   474 - 617

Cost:
   £1.456 million / $5.822 million

Distribution of weights at normal displacement:
   Armament: 363 tons, 3.9 %
      - Guns: 363 tons, 3.9 %
   Armour: 1,463 tons, 15.7 %
      - Belts: 829 tons, 8.9 %
      - Armament: 158 tons, 1.7 %
      - Armour Deck: 439 tons, 4.7 %
      - Conning Tower: 38 tons, 0.4 %
   Machinery: 2,859 tons, 30.6 %
   Hull, fittings & equipment: 3,118 tons, 33.4 %
   Fuel, ammunition & stores: 1,338 tons, 14.3 %
   Miscellaneous weights: 190 tons, 2.0 %
      - Hull below water: 70 tons
      - Hull above water: 30 tons
      - On freeboard deck: 70 tons
      - Above deck: 20 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     9,206 lbs / 4,176 Kg = 51.7 x 7.1 " / 180 mm shells or 1.3 torpedoes
   Stability (Unstable if below 1.00): 1.26
   Metacentric height 3.3 ft / 1.0 m
   Roll period: 13.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.30
   Seaboat quality  (Average = 1.00): 1.07

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.534 / 0.544
   Length to Beam Ratio: 9.43 : 1
   'Natural speed' for length: 23.27 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 47
   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:   16.72 %,  25.43 ft / 7.75 m,  25.43 ft / 7.75 m
      - Forward deck:   20.00 %,  25.43 ft / 7.75 m,  25.43 ft / 7.75 m
      - Aft deck:   53.28 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Quarter deck:   10.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      19.72 ft / 6.01 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 112.7 %
      - Above water (accommodation/working, high = better): 162.0 %
   Waterplane Area: 21,369 Square feet or 1,985 Square metres
   Displacement factor (Displacement / loading): 110 %
   Structure weight / hull surface area: 96 lbs/sq ft or 468 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.53
      - Overall: 1.00
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room

Misc Distribution
--Below Water (70t)
----30t Additional Pumps
----30t Improved Damage Control
----10t Additional Stores
--Above Water (30t)
----5t Improved Officer Accommodations
----25t Long Range Wireless
--On Deck (70t)
----37t 1918 Fire Control
----25t Armed Recon Floatplane
----5t Catapult
----8t Construction Reserve
--Above Deck (20t)
----15t Night Fighting Equipment
----5t Improved Signaling Equipment

Cost: .071 $ and BP per ship
9t new guns
62t On Deck Misc weight
71t total

[snip]

The Rainier Marion's are the oldest "modern" destroyers and the genesis of the current line of Heavy Destroyers. While the reclassification is going to alter how they are described, they are in need of an update. This sees the replacement of the long 140mmL55 with the L40 version found on more modern examples. Additionally, they receive additional AA guns, and a quadruple 610mm torpedo launcher in place of the old 530mm fish.

Rainier Marion (1927 Refit), Imperial Roman Destroyer laid down 1916

Displacement:
   1,494 t light; 1,560 t standard; 1,802 t normal; 1,996 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (347.76 ft / 344.49 ft) x 32.81 ft x (11.48 / 12.39 ft)
   (106.00 m / 105.00 m) x 10.00 m  x (3.50 / 3.78 m)

Armament:
      4 - 5.51" / 140 mm 40.0 cal guns - 85.98lbs / 39.00kg shells, 125 per gun
     Quick firing guns in deck mounts, 1917 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      4 - 1.10" / 28.0 mm 55.0 cal guns - 0.72lbs / 0.33kg shells, 3,250 per gun
     Anti-air guns in deck mount, 1926 Model
     1 x Quad mount on centreline, aft deck centre
      1 raised mount
      8 - 0.30" / 7.5 mm 66.7 cal guns - 0.01lbs / 0.01kg shells, 15,000 per gun
     Machine guns in deck mounts, 1916 Model
     8 x Single mounts on sides, evenly spread
      6 raised mounts
      Weight of broadside 347 lbs / 157 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.39" / 10 mm   0.20" / 5 mm            -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 32,000 shp / 23,872 Kw = 30.89 kts
   Range 4,780nm at 14.00 kts
   Bunker at max displacement = 436 tons

Complement:
   137 - 179

Cost:
   £0.326 million / $1.302 million

Distribution of weights at normal displacement:
   Armament: 50 tons, 2.8 %
      - Guns: 50 tons, 2.8 %
   Armour: 6 tons, 0.4 %
      - Armament: 6 tons, 0.4 %
   Machinery: 948 tons, 52.6 %
   Hull, fittings & equipment: 433 tons, 24.1 %
   Fuel, ammunition & stores: 308 tons, 17.1 %
   Miscellaneous weights: 56 tons, 3.1 %
      - On freeboard deck: 56 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     505 lbs / 229 Kg = 6.0 x 5.5 " / 140 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.32
   Metacentric height 1.5 ft / 0.5 m
   Roll period: 11.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.41
   Seaboat quality  (Average = 1.00): 1.16

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.486 / 0.499
   Length to Beam Ratio: 10.50 : 1
   'Natural speed' for length: 18.56 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 61
   Bow angle (Positive = bow angles forward): 12.50 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 %,  14.76 ft / 4.50 m,  14.76 ft / 4.50 m
      - Forward deck:   30.00 %,  14.76 ft / 4.50 m,  14.76 ft / 4.50 m
      - Aft deck:   35.00 %,  14.76 ft / 4.50 m,  14.76 ft / 4.50 m
      - Quarter deck:   15.00 %,  14.76 ft / 4.50 m,  14.76 ft / 4.50 m
      - Average freeboard:      14.76 ft / 4.50 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 178.0 %
      - Above water (accommodation/working, high = better): 152.6 %
   Waterplane Area: 7,436 Square feet or 691 Square metres
   Displacement factor (Displacement / loading): 70 %
   Structure weight / hull surface area: 31 lbs/sq ft or 153 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.81
      - Overall: 0.56
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Misc Wieght (56t)
--20t 4x610mm (1918) Torpedo Tubes (1x4 mount cenerline)
--8t 1918 FC
--25t LR Wireless
--3t Night Fighting Equipment

Cost: .07 Cash and BP.
--20t for Torpedoes
--50t for guns