WesWorld

Most ship building in 1944 are basically ships designed in the previous 2 years, however a few are new designs laid down in 1944

A slightly improved Daedalus class cruiser.....

Perseus, Atlantean Heavy Cruiser laid down 1944

Displacement:
12,293 t light; 12,967 t standard; 14,435 t normal; 15,608 t full load

Dimensions: Length overall / water x beam x draught
692.90 ft / 670.00 ft x 68.50 ft x 21.50 ft (normal load)
211.20 m / 204.22 m x 20.88 m x 6.55 m

Armament:
12 - 8.00" / 203 mm guns (4x3 guns), 256.00lbs / 116.12kg shells, 1944 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 5.10" / 130 mm guns (4x2 guns), 66.33lbs / 30.09kg shells, 1944 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread, all raised mounts
12 - 2.95" / 74.9 mm guns (6x2 guns), 12.84lbs / 5.82kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
2 - 2.95" / 74.9 mm guns (1x2 guns), 12.84lbs / 5.82kg shells, 1944 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
36 - 0.79" / 20.0 mm guns (7 mounts), 0.24lbs / 0.11kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 28 raised guns
Weight of broadside 3,791 lbs / 1,720 kg
Shells per gun, main battery: 175
10 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.72" / 120 mm 360.89 ft / 110.00 m 10.01 ft / 3.05 m
Ends: Unarmoured
Main Belt covers 83 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 7.99" / 203 mm 2.95" / 75 mm 3.94" / 100 mm
2nd: 1.97" / 50 mm 0.98" / 25 mm 1.57" / 40 mm
3rd: 0.04" / 1 mm - -
4th: 0.04" / 1 mm - -
5th: 0.04" / 1 mm - -

- Armour deck: 2.36" / 60 mm, Conning tower: 2.36" / 60 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 89,089 shp / 66,460 Kw = 32.00 kts
Range 10,800nm at 15.00 kts
Bunker at max displacement = 2,641 tons

Complement:
657 - 855

Cost:
£7.715 million / $30.860 million

Distribution of weights at normal displacement:
Armament: 474 tons, 3.3 %
Armour: 2,851 tons, 19.8 %
- Belts: 734 tons, 5.1 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 681 tons, 4.7 %
- Armour Deck: 1,405 tons, 9.7 %
- Conning Tower: 30 tons, 0.2 %
Machinery: 2,275 tons, 15.8 %
Hull, fittings & equipment: 6,393 tons, 44.3 %
Fuel, ammunition & stores: 2,142 tons, 14.8 %
Miscellaneous weights: 300 tons, 2.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
21,926 lbs / 9,945 Kg = 85.6 x 8.0 " / 203 mm shells or 2.4 torpedoes
Stability (Unstable if below 1.00): 1.03
Metacentric height 3.0 ft / 0.9 m
Roll period: 16.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.86
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:
Hull has raised forecastle
and transom stern
Block coefficient: 0.512
Length to Beam Ratio: 9.78 : 1
'Natural speed' for length: 29.55 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 5.00 ft / 1.52 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 31.00 ft / 9.45 m
- Forecastle (20 %): 22.00 ft / 6.71 m (21.00 ft / 6.40 m aft of break)
- Mid (50 %): 22.00 ft / 6.71 m
- Quarterdeck (15 %): 22.00 ft / 6.71 m
- Stern: 22.00 ft / 6.71 m
- Average freeboard: 22.57 ft / 6.88 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 79.8 %
- Above water (accommodation/working, high = better): 172.5 %
Waterplane Area: 32,159 Square feet or 2,988 Square metres
Displacement factor (Displacement / loading): 126 %
Structure weight / hull surface area: 130 lbs/sq ft or 633 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.40
- Overall: 1.02
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Ships in class: Perseus, Orion, Andromeda, Hades
Misc weight breakdown:
120 tons for electronics (Radar ect.)
60 tons for 2 aircraft, 2 catipults and one crane
20 tons for 2x300 kw diesel generators
20 tons for localised AA electronic fire control
80 tons for damage control equipment

Given the larger presence of auto loading guns on heavy cruisers Atlantis has laid down the Phoenix to test out auto loaders of its own. The 8 inch gun uses the same shells as existing designs and they are lighter than those used by the U.S. hopefully resulting in similar ROF performance.

Phoenix, Atlantean Heavy Cruiser laid down 1944

Displacement:
13,376 t light; 13,982 t standard; 15,520 t normal; 16,751 t full load

Dimensions: Length overall / water x beam x draught
714.32 ft / 692.00 ft x 70.00 ft x 22.25 ft (normal load)
217.72 m / 210.92 m x 21.34 m x 6.78 m

Armament:
9 - 8.00" / 203 mm guns (3x3 guns), 256.00lbs / 116.12kg shells, 1944 Model
Automatic rapid fire guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 5.10" / 130 mm guns (4x2 guns), 66.33lbs / 30.09kg shells, 1944 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread, all raised mounts
4 - 5.10" / 130 mm guns (2x2 guns), 66.33lbs / 30.09kg shells, 1944 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts
16 - 2.95" / 75.0 mm guns (8x2 guns), 12.87lbs / 5.84kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
32 - 0.79" / 20.0 mm guns (8x4 guns), 0.24lbs / 0.11kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 6 raised mounts
Weight of broadside 3,314 lbs / 1,503 kg
Shells per gun, main battery: 150
8 - 25.6" / 650.24 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.72" / 120 mm 374.02 ft / 114.00 m 10.01 ft / 3.05 m
Ends: Unarmoured
Main Belt covers 83 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8.00" / 203 mm 2.95" / 75 mm 3.94" / 100 mm
2nd: 1.97" / 50 mm 0.98" / 25 mm 1.57" / 40 mm
3rd: 1.97" / 50 mm 0.98" / 25 mm 1.57" / 40 mm
4th: 0.98" / 25 mm - -
5th: 0.98" / 25 mm - -

- Armour deck: 2.36" / 60 mm, Conning tower: 3.15" / 80 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 97,460 shp / 72,705 Kw = 32.50 kts
Range 10,800nm at 15.00 kts
Bunker at max displacement = 2,769 tons

Complement:
694 - 903

Cost:
£8.160 million / $32.638 million

Distribution of weights at normal displacement:
Armament: 472 tons, 3.0 %
Armour: 2,817 tons, 18.2 %
- Belts: 759 tons, 4.9 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 544 tons, 3.5 %
- Armour Deck: 1,472 tons, 9.5 %
- Conning Tower: 42 tons, 0.3 %
Machinery: 2,489 tons, 16.0 %
Hull, fittings & equipment: 6,748 tons, 43.5 %
Fuel, ammunition & stores: 2,144 tons, 13.8 %
Miscellaneous weights: 850 tons, 5.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
22,923 lbs / 10,398 Kg = 89.5 x 8.0 " / 203 mm shells or 2.4 torpedoes
Stability (Unstable if below 1.00): 1.05
Metacentric height 3.2 ft / 1.0 m
Roll period: 16.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.66
Seaboat quality (Average = 1.00): 1.22

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.504
Length to Beam Ratio: 9.89 : 1
'Natural speed' for length: 30.03 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 57
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 5.00 ft / 1.52 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 30.00 ft / 9.14 m
- Forecastle (20 %): 22.00 ft / 6.71 m
- Mid (50 %): 22.00 ft / 6.71 m
- Quarterdeck (15 %): 22.00 ft / 6.71 m
- Stern: 22.00 ft / 6.71 m
- Average freeboard: 22.64 ft / 6.90 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 81.9 %
- Above water (accommodation/working, high = better): 169.0 %
Waterplane Area: 33,688 Square feet or 3,130 Square metres
Displacement factor (Displacement / loading): 125 %
Structure weight / hull surface area: 131 lbs/sq ft or 638 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.01
- Longitudinal: 1.37
- Overall: 1.04
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Misc. weight breakdown:
300 tons for automation of 8" guns (100 tons per turret)
120 tons for electronics
100 tons for flagship facilities
60 tons for 2 aircraft, 2 catipults and one crane
20 tons for climate control equipment (air conditioning,ventalation and heating)
20 tons for localised AA electronic fire control
30 tons for Diesel electric generators (3x300kw diesel generators, 10 tons each)
200 tons for additional damage control equipment
Total: 850 tons

Here's a multi role tender for Subs or Destroyers that's also able to act as a repair ship in a limited fashion. One pair has been laid down with the possibility of 2 more being laid down in the future.

Venture, Atlantean Submarine/Destroyer tender laid down 1944

Displacement:
12,705 t light; 13,121 t standard; 15,722 t normal; 17,803 t full load

Dimensions: Length overall / water x beam x draught
530.19 ft / 520.00 ft x 74.00 ft x 26.00 ft (normal load)
161.60 m / 158.50 m x 22.56 m x 7.92 m

Armament:
4 - 5.10" / 130 mm guns (2x2 guns), 66.33lbs / 30.09kg shells, 1943 Model
Dual purpose guns in deck mounts
on centreline ends, evenly spread, 1 raised mount
8 - 1.57" / 40.0 mm guns (2x4 guns), 1.95lbs / 0.88kg shells, 1943 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread, all raised mounts
8 - 1.57" / 40.0 mm guns (2x4 guns), 1.95lbs / 0.88kg shells, 1943 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
24 - 0.79" / 20.0 mm guns (12x2 guns), 0.24lbs / 0.11kg shells, 1943 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 6 raised mounts
8 - 0.50" / 12.7 mm guns (4x2 guns), 0.06lbs / 0.03kg shells, 1943 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 303 lbs / 137 kg
Shells per gun, main battery: 550

Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 19,708 shp / 14,702 Kw = 20.00 kts
Range 30,004nm at 12.00 kts
Bunker at max displacement = 4,682 tons

Complement:
701 - 912

Cost:
£3.585 million / $14.341 million

Distribution of weights at normal displacement:
Armament: 38 tons, 0.2 %
Machinery: 509 tons, 3.2 %
Hull, fittings & equipment: 7,158 tons, 45.5 %
Fuel, ammunition & stores: 3,017 tons, 19.2 %
Miscellaneous weights: 5,000 tons, 31.8 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
35,996 lbs / 16,327 Kg = 542.7 x 5.1 " / 130 mm shells or 4.5 torpedoes
Stability (Unstable if below 1.00): 1.04
Metacentric height 3.5 ft / 1.1 m
Roll period: 16.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.03
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has raised forecastle, low quarterdeck
Block coefficient: 0.550
Length to Beam Ratio: 7.03 : 1
'Natural speed' for length: 22.80 kts
Power going to wave formation at top speed: 42 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.00 ft / 8.53 m
- Forecastle (20 %): 26.00 ft / 7.92 m (18.00 ft / 5.49 m aft of break)
- Mid (50 %): 26.00 ft / 7.92 m
- Quarterdeck (15 %): 18.00 ft / 5.49 m (26.00 ft / 7.92 m before break)
- Stern: 18.00 ft / 5.49 m
- Average freeboard: 23.76 ft / 7.24 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 48.6 %
- Above water (accommodation/working, high = better): 176.3 %
Waterplane Area: 26,855 Square feet or 2,495 Square metres
Displacement factor (Displacement / loading): 249 %
Structure weight / hull surface area: 168 lbs/sq ft or 818 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.61
- Longitudinal: 3.54
- Overall: 1.74
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Ships in class: Venture and Valour

Misc weight breakdown:
Total: 7341 tons (2,341 tons simmed as bunkerage *)
1,200 tons for repair materials
1,000 tons for cargo
1,000 tons for ammo
1,000 tons for machine shop
1,000 tons for crew accomidations
500 tons for torpedo workshop
300 tons for six 50 ton cranes
250 tons for weapons workshop
250 tons for fabrication shop
200 tons for 100 spare torpedo's
200 tons for dispensary and medical facilities
104 tons for 2 LCM's used for harbour replenishment operations
100 tons for Electronics (radar etc.)
60 tons for 6x300kw diesel generators

This is actually a refit originally planned for 1944 but due to busy dockyards delayed a year. Given their shorter range and the large number of R-98's now in service the Dolphin class was refitted to serve as Radar picket subs with emphasis on making the ships as quiet as possible with streamlining and other measures and increasing their range. Given their new role dive depth was not considered an issue. The original armament, her stern torpedo tubes and conning tower was removed. They had a new more streamlined conning tower added along with new sonar and Radar and a new armament consisting of 1x75mm, 1x40mm AA and 4 50 cal. MG's. Their range was increased and new diesel engines added. Refit cost 507 tons each, trim altered and bow form altered for new sonar.

Dolphin (D-22 class), Atlantean Fleet sub laid down 1930 (Engine 1945)

Displacement:
1,056 t light; 1,081 t standard; 1,157 t normal; 1,219 t full load

Dimensions: Length overall / water x beam x draught
219.00 ft / 219.00 ft x 24.50 ft x 15.10 ft (normal load)
66.75 m / 66.75 m x 7.47 m x 4.60 m

Armament:
1 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1930 Model
Quick firing gun in deck mount
on centreline aft
1 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.89kg shells, 1930 Model
Anti-aircraft gun in deck mount
on centreline aft
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1930 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 15 lbs / 7 kg
Shells per gun, main battery: 150
4 - 21.0" / 533.4 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 4,500 shp / 3,357 Kw = 19.33 kts
Range 6,000nm at 10.00 kts
Bunker at max displacement = 138 tons

Complement:
98 - 128

Cost:
£0.228 million / $0.911 million

Distribution of weights at normal displacement:
Armament: 2 tons, 0.2 %
Machinery: 114 tons, 9.8 %
Hull, fittings & equipment: 641 tons, 55.4 %
Fuel, ammunition & stores: 101 tons, 8.7 %
Miscellaneous weights: 300 tons, 25.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
643 lbs / 292 Kg = 49.9 x 3.0 " / 75 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.01
Metacentric height 0.6 ft / 0.2 m
Roll period: 13.0 seconds
Steadiness - As gun platform (Average = 50 %): 0 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.500
Length to Beam Ratio: 8.94 : 1
'Natural speed' for length: 14.80 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 42
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 tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 90.7 %
- Above water (accommodation/working, high = better): 0.0 %
Waterplane Area: 3,575 Square feet or 332 Square metres
Displacement factor (Displacement / loading): 213 %
Structure weight / hull surface area: 121 lbs/sq ft or 590 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.61
- Longitudinal: 2.23
- Overall: 2.52
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is extremely poor
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability


Misc. weight breakdown
200 tons for ballast
60 tons for sonar, hydrophones and radar's
18 tons for 12 torpedo reloads
10 tons for snorkel (rostrum)
8 tons for "Placidus" system
4 tons for Fallax system

Also originally planned for 1944, a refit for the Philomedes class battleships. In the refit they trade their 4.5" DP's for the new 3.95" DP, increase their 40mm armament from 20 to 48 guns, their 20mm guns increase from 28 to 48, flagship facilities have been added and their electronics have been significantly upgraded. Crew comforts and additional damage control equipment have also been added.

Philomedes, Atlantean Battleship laid down 1931

Displacement:
39,105 t light; 41,463 t standard; 45,963 t normal; 49,563 t full load

Dimensions: Length overall / water x beam x draught
746.21 ft / 731.99 ft x 108.50 ft x 32.15 ft (normal load)
227.45 m / 223.11 m x 33.07 m x 9.80 m

Armament:
9 - 15.00" / 381 mm guns (3x3 guns), 1,687.50lbs / 765.44kg shells, 1931 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
15 - 5.98" / 152 mm guns (5x3 guns), 107.15lbs / 48.60kg shells, 1931 Model
Breech loading guns in turrets (on barbettes)
on side, all amidships, 1 raised mount - superfiring
16 - 3.94" / 100 mm guns (8x2 guns), 30.82lbs / 13.98kg shells, 1931 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
48 - 1.57" / 40.0 mm guns (12x4 guns), 1.94lbs / 0.88kg shells, 1931 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 10 raised mounts
48 - 0.79" / 20.0 mm guns (12x4 guns), 0.24lbs / 0.11kg shells, 1931 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 17,393 lbs / 7,889 kg
Shells per gun, main battery: 145

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 16.0" / 406 mm 460.01 ft / 140.21 m 13.12 ft / 4.00 m
Ends: Unarmoured
Main Belt covers 97 % of normal length

- Torpedo Bulkhead:
1.97" / 50 mm 460.01 ft / 140.21 m 27.99 ft / 8.53 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 16.0" / 406 mm 11.7" / 297 mm 14.0" / 356 mm
2nd: 3.94" / 100 mm 2.36" / 60 mm 2.76" / 70 mm
3rd: 0.98" / 25 mm 0.98" / 25 mm -

- Armour deck: 5.98" / 152 mm, Conning tower: 12.01" / 305 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 115,072 shp / 85,844 Kw = 28.18 kts
Range 15,000nm at 15.00 kts
Bunker at max displacement = 8,100 tons

Complement:
1,569 - 2,040

Cost:
£16.042 million / $64.167 million

Distribution of weights at normal displacement:
Armament: 2,174 tons, 4.7 %
Armour: 16,116 tons, 35.1 %
- Belts: 4,237 tons, 9.2 %
- Torpedo bulkhead: 938 tons, 2.0 %
- Armament: 3,713 tons, 8.1 %
- Armour Deck: 6,896 tons, 15.0 %
- Conning Tower: 332 tons, 0.7 %
Machinery: 3,441 tons, 7.5 %
Hull, fittings & equipment: 16,574 tons, 36.1 %
Fuel, ammunition & stores: 6,858 tons, 14.9 %
Miscellaneous weights: 800 tons, 1.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
68,110 lbs / 30,894 Kg = 40.4 x 15.0 " / 381 mm shells or 10.9 torpedoes
Stability (Unstable if below 1.00): 1.03
Metacentric height 6.0 ft / 1.8 m
Roll period: 18.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.65
Seaboat quality (Average = 1.00): 1.11

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.630
Length to Beam Ratio: 6.75 : 1
'Natural speed' for length: 31.44 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 63
Bow angle (Positive = bow angles forward): 17.00 degrees
Stern overhang: 4.59 ft / 1.40 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 31.50 ft / 9.60 m
- Forecastle (24 %): 22.01 ft / 6.71 m
- Mid (50 %): 22.01 ft / 6.71 m
- Quarterdeck (24 %): 22.01 ft / 6.71 m
- Stern: 22.01 ft / 6.71 m
- Average freeboard: 22.92 ft / 6.99 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 77.7 %
- Above water (accommodation/working, high = better): 166.5 %
Waterplane Area: 62,290 Square feet or 5,787 Square metres
Displacement factor (Displacement / loading): 112 %
Structure weight / hull surface area: 200 lbs/sq ft or 975 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.40
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform

Misc. weight breakdown
Total: 800 tons
250 tons for electronics (radars, radio's, radio whips/antenna, fire control radars
200 tons for flag bridge
160 tons for damage control equipment
100 tons for two aircraft, two catapults and one crane
40 tons for four 300kw diesel generators
30 tons for climate control
20 tons for localized AA fire control

Some minor nitpicking...

- Length (wl) decreases by 0.01'.
- Length (oa) decreases by 0.02'.
- 6" gun shell weight decreases by 0.85lbs (considering the 1943 Acestus refit, I would think that it would make sense to keep that shell weight at 108 lbs).
- I would think that your 3.95" DP would be more modern than your 4.5" DP so that date is off (and maybe those of the 40mm and 20mm as well if they are more modern than the original ones mounted).
- Main belt is 0.01' longer.
- TBH is 0.01' longer.
- TBH is 0.01' less tall.
- Armored deck is 0.02" thinner.
- 72 shp more.
- Freeboard increases by 0.01'.
- Stern overhang decreases by 0.01'.

Especially altering that stern would mean that this should be a Total Reconstruction.

The differences in dimensions can be fixed by adding a new coat of paint... ;)

Sloppy Atlanteans, removing the paint from their ships and then forgetting to repaint it.

Well that's what happens when I get someone else to springsharp it for me and don't carefully go over the fine details. I was having issues with SS not siming old ships properly and had Bruce give it a go. Looks like its back to the drawing board!

Looking at the original sim, it looks to me to be 100% imperial values you used even though some values suggest that it may be metric (but it is not). Bruce's sim looks to me to be 100% metric which means you will end up with those minute differences (edit: and it actually caught me off guard a bit with the AA guns).


Quickly throwing it through SS gives me this and it looks like you will save half a ton per ship for each refit.


Philomedes, Atlantean Battleship laid down 1931


Displacement:
39,102 t light; 41,462 t standard; 45,962 t normal; 49,561 t full load

Dimensions: Length overall / water x beam x draught
746.23 ft / 732.00 ft x 108.50 ft x 32.15 ft (normal load)
227.45 m / 223.11 m x 33.07 m x 9.80 m

Armament:
9 - 15.00" / 381 mm guns (3x3 guns), 1,687.50lbs / 765.44kg shells, 1931 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
15 - 6.00" / 152 mm guns (5x3 guns), 108.00lbs / 48.99kg shells, 1944 Model
Breech loading guns in turrets (on barbettes)
on side, all amidships, 1 raised mount - superfiring
16 - 3.95" / 100 mm guns (8x2 guns), 30.81lbs / 13.98kg shells, 1944 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread, all raised mounts
48 - 1.57" / 39.9 mm guns (12x4 guns), 1.93lbs / 0.88kg shells, 1944 Model (=> original sim gives 40mm instead of 40.0mm suggesting it was edited to change it from 39.9mm to 40mm)
Anti-aircraft guns in deck mounts
on side, evenly spread, 10 raised mounts
48 - 0.79" / 20.0 mm guns (12x4 guns), 0.24lbs / 0.11kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 17,405 lbs / 7,895 kg
Shells per gun, main battery: 145

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 16.0" / 406 mm 460.00 ft / 140.21 m 13.12 ft / 4.00 m
Ends: Unarmoured
Main Belt covers 97 % of normal length

- Torpedo Bulkhead:
1.97" / 50 mm 460.00 ft / 140.21 m 28.00 ft / 8.53 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 16.0" / 406 mm 11.7" / 297 mm 14.0" / 356 mm
2nd: 3.94" / 100 mm 2.35" / 60 mm 2.76" / 70 mm
3rd: 1.00" / 25 mm 1.00" / 25 mm -

- Armour deck: 6.00" / 152 mm, Conning tower: 12.00" / 305 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 115,000 shp / 85,790 Kw = 28.18 kts
Range 15,000nm at 15.00 kts
Bunker at max displacement = 8,100 tons

Complement:
1,569 - 2,040

Cost:
£16.048 million / $64.191 million

Distribution of weights at normal displacement:
Armament: 2,176 tons, 4.7 %
Armour: 16,138 tons, 35.1 %
- Belts: 4,240 tons, 9.2 %
- Torpedo bulkhead: 939 tons, 2.0 %
- Armament: 3,712 tons, 8.1 %
- Armour Deck: 6,914 tons, 15.0 %
- Conning Tower: 332 tons, 0.7 %
Machinery: 3,439 tons, 7.5 %
Hull, fittings & equipment: 16,550 tons, 36.0 %
Fuel, ammunition & stores: 6,859 tons, 14.9 %
Miscellaneous weights: 800 tons, 1.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
68,103 lbs / 30,891 Kg = 40.4 x 15.0 " / 381 mm shells or 10.9 torpedoes
Stability (Unstable if below 1.00): 1.03
Metacentric height 6.0 ft / 1.8 m
Roll period: 18.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.65
Seaboat quality (Average = 1.00): 1.11

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.630
Length to Beam Ratio: 6.75 : 1
'Natural speed' for length: 31.44 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 63
Bow angle (Positive = bow angles forward): 17.00 degrees
Stern overhang: 4.60 ft / 1.40 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 31.50 ft / 9.60 m
- Forecastle (20 %): 22.00 ft / 6.71 m
- Mid (50 %): 22.00 ft / 6.71 m
- Quarterdeck (15 %): 22.00 ft / 6.71 m
- Stern: 22.00 ft / 6.71 m
- Average freeboard: 22.76 ft / 6.94 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 77.8 %
- Above water (accommodation/working, high = better): 166.4 %
Waterplane Area: 62,292 Square feet or 5,787 Square metres
Displacement factor (Displacement / loading): 112 %
Structure weight / hull surface area: 200 lbs/sq ft or 975 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.39
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform



Actually the only slightly bigger problems with the designs are the low stability that becomes lower with the additional miscellaneous weights (but that is an issue of the original sim) and the fact that I now realize that you simmed it with a transom stern while the top view of the Philomedes shows a non-transom stern.

Many thanks for the corrections Walter, as we speak I'm already working on a drawing for her and I'm going to change the stern in the top view to look more like the one on the following Neptune class.