Re-learning the ropes

[Alikchi]

After a long break I'm clearing off the cobwebs and digging into SpringSharp again. I'm going to post designs I think worthy of review here. Input, tips, and general advice would be very much appreciated - I'm sure I've screwed at least a few things up.

First is an A-H battlecruiser in some kind of bizarre scenario where:

1) Treaties limit me to 350mm guns
2) A-H has genuine strategic need of a battlecruiser

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Budapest, Austro-Hungarian Battlecruiser laid down 1920

Displacement:
26,377 t light; 28,308 t standard; 30,584 t normal; 32,405 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(764.30 ft / 754.59 ft) x 83.99 ft x (29.53 / 30.94 ft)
(232.96 m / 230.00 m) x 25.60 m  x (9.00 / 9.43 m)

Armament:
      8 - 13.78" / 350 mm 45.0 cal guns - 1,319.35lbs / 598.45kg shells, 200 per gun
  Breech loading guns in turret on barbette mounts, 1920 Model
  2 x Triple mounts on centreline ends, evenly spread
  1 x Twin mount on centreline, forward deck centre
1 raised mount
      8 - 5.91" / 150 mm 50.0 cal guns - 110.23lbs / 50.00kg shells, 150 per gun
  Breech loading guns in turret on barbette mounts, 1920 Model
  4 x Twin mounts on side ends, evenly spread
4 raised mounts
      12 - 3.54" / 90.0 mm 45.0 cal guns - 22.05lbs / 10.00kg shells, 500 per gun
  Anti-air guns in deck mounts, 1920 Model
  12 x Single mounts on sides, evenly spread
6 raised mounts
      Weight of broadside 11,701 lbs / 5,308 kg

Armour:
   - Belts: Width (max) Length (avg) Height (avg)
Main: 12.6" / 320 mm 454.40 ft / 138.50 m 10.99 ft / 3.35 m
Ends: Unarmoured
Upper: 2.95" / 75 mm 415.03 ft / 126.50 m 8.01 ft / 2.44 m
  Main Belt covers 93 % of normal length
  Main Belt inclined 15.00 degrees (positive = in)

   - Torpedo Bulkhead - Strengthened structural bulkheads:
1.97" / 50 mm 415.03 ft / 126.50 m 27.43 ft / 8.36 m
Beam between torpedo bulkheads 83.99 ft / 25.60 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 13.8" / 350 mm 2.95" / 75 mm 5.91" / 150 mm
2nd: 7.87" / 200 mm 2.95" / 75 mm 2.95" / 75 mm
3rd: 1.97" / 50 mm 0.39" / 10 mm       -

   - Armoured deck - multiple decks:
For and Aft decks: 2.95" / 75 mm
Forecastle: 2.95" / 75 mm  Quarter deck: 2.95" / 75 mm

   - Conning towers: Forward 11.81" / 300 mm, Aft 11.81" / 300 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 149,555 shp / 111,568 Kw = 31.48 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 4,097 tons

Complement:
1,156 - 1,503

Cost:
£6.487 million / $25.948 million

Distribution of weights at normal displacement:
Armament: 2,073 tons, 6.8 %
   - Guns: 2,073 tons, 6.8 %
Armour: 8,377 tons, 27.4 %
   - Belts: 3,079 tons, 10.1 %
   - Torpedo bulkhead: 829 tons, 2.7 %
   - Armament: 1,487 tons, 4.9 %
   - Armour Deck: 2,485 tons, 8.1 %
   - Conning Towers: 498 tons, 1.6 %
Machinery: 5,229 tons, 17.1 %
Hull, fittings & equipment: 10,447 tons, 34.2 %
Fuel, ammunition & stores: 4,207 tons, 13.8 %
Miscellaneous weights: 250 tons, 0.8 %
   - Hull below water: 50 tons
   - Hull above water: 50 tons
   - On freeboard deck: 100 tons
   - Above deck: 50 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
  34,338 lbs / 15,576 Kg = 26.2 x 13.8 " / 350 mm shells or 4.3 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 4.4 ft / 1.3 m
Roll period: 16.9 seconds
Steadiness - As gun platform (Average = 50 %): 58 %
- Recoil effect (Restricted arc if above 1.00): 1.00
Seaboat quality  (Average = 1.00): 1.15

Hull form characteristics:
Hull has a flush deck,
  a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.572 / 0.578
Length to Beam Ratio: 8.98 : 1
'Natural speed' for length: 27.47 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 51
Bow angle (Positive = bow angles forward): 12.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
   - Forecastle: 30.00 %,  30.22 ft / 9.21 m,  24.74 ft / 7.54 m
   - Forward deck: 20.00 %,  24.74 ft / 7.54 m,  22.51 ft / 6.86 m
   - Aft deck: 35.00 %,  22.51 ft / 6.86 m,  22.51 ft / 6.86 m
   - Quarter deck: 15.00 %,  22.51 ft / 6.86 m,  19.23 ft / 5.86 m
   - Average freeboard: 23.81 ft / 7.26 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 90.5 %
- Above water (accommodation/working, high = better): 170.3 %
Waterplane Area: 45,153 Square feet or 4,195 Square metres
Displacement factor (Displacement / loading): 104 %
Structure weight / hull surface area: 174 lbs/sq ft or 849 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.39
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room



[Alikchi]

Here's a "Nordic" pre-dread based very heavily on Andrey Pervozvanny.

Code Select Expand

Hardrada, Nordic PD Battleship laid down 1903

Displacement:
14,576 t light; 15,720 t standard; 17,913 t normal; 19,668 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(460.00 ft / 460.00 ft) x 80.00 ft x (27.00 / 29.22 ft)
(140.21 m / 140.21 m) x 24.38 m  x (8.23 / 8.91 m)

Armament:
      4 - 12.00" / 305 mm 45.0 cal guns - 871.37lbs / 395.24kg shells, 150 per gun
  Breech loading guns in turret on barbette mounts, 1903 Model
  2 x Single mounts on centreline ends, evenly spread
      12 - 8.00" / 203 mm 45.0 cal guns - 258.18lbs / 117.11kg shells, 250 per gun
  Breech loading guns in turret on barbette mounts, 1903 Model
  4 x Twin mounts on sides, evenly spread
  2 x Twin mounts on centreline ends, evenly spread
2 raised mounts
      12 - 4.00" / 102 mm 45.0 cal guns - 32.27lbs / 14.64kg shells, 300 per gun
  Breech loading guns in deck and hoist mounts, 1903 Model
  12 x Single mounts on sides, evenly spread
6 raised mounts
      Weight of broadside 6,971 lbs / 3,162 kg
      Main Torpedoes
      2 - 18.0" / 457 mm, 18.00 ft / 5.49 m torpedoes - 0.726 t each, 1.453 t total
submerged bow tubes

Armour:
   - Belts: Width (max) Length (avg) Height (avg)
Main: 10.0" / 254 mm 331.00 ft / 100.89 m 10.73 ft / 3.27 m
Ends: 5.00" / 127 mm   60.98 ft / 18.59 m 10.73 ft / 3.27 m
  68.02 ft / 20.73 m Unarmoured ends
Upper: 5.00" / 127 mm 300.00 ft / 91.44 m 8.00 ft / 2.44 m
  Main Belt covers 111 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.0" / 254 mm 10.0" / 254 mm 10.0" / 254 mm
2nd: 6.00" / 152 mm 2.00" / 51 mm 6.00" / 152 mm
3rd: 1.00" / 25 mm       - 1.00" / 25 mm

   - Armoured deck - single deck:
For and Aft decks: 0.50" / 13 mm
Forecastle: 0.50" / 13 mm  Quarter deck: 0.50" / 13 mm

Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 shafts, 24,000 ihp / 17,904 Kw = 20.19 kts
Range 11,995nm at 10.00 kts
Bunker at max displacement = 3,948 tons (100% coal)

Complement:
773 - 1,006

Cost:
£1.743 million / $6.972 million

Distribution of weights at normal displacement:
Armament: 1,566 tons, 8.7 %
   - Guns: 1,563 tons, 8.7 %
   - Weapons: 3 tons, 0.0 %
Armour: 3,891 tons, 21.7 %
   - Belts: 2,202 tons, 12.3 %
   - Armament: 1,431 tons, 8.0 %
   - Armour Deck: 258 tons, 1.4 %
Machinery: 4,138 tons, 23.1 %
Hull, fittings & equipment: 4,871 tons, 27.2 %
Fuel, ammunition & stores: 3,337 tons, 18.6 %
Miscellaneous weights: 110 tons, 0.6 %
   - Hull below water: 10 tons
   - Hull above water: 25 tons
   - On freeboard deck: 50 tons
   - Above deck: 25 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
  13,780 lbs / 6,251 Kg = 15.9 x 12.0 " / 305 mm shells or 3.1 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 5.3 ft / 1.6 m
Roll period: 14.5 seconds
Steadiness - As gun platform (Average = 50 %): 72 %
- Recoil effect (Restricted arc if above 1.00): 0.52
Seaboat quality  (Average = 1.00): 1.29

Hull form characteristics:
Hull has a flush deck,
  a straight bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0.631 / 0.640
Length to Beam Ratio: 5.75 : 1
'Natural speed' for length: 21.45 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 56
Bow angle (Positive = bow angles forward): -15.00 degrees
Stern overhang: -15.00 ft / -4.57 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
   - Forecastle: 20.00 %,  22.81 ft / 6.95 m,  18.66 ft / 5.69 m
   - Forward deck: 30.00 %,  18.66 ft / 5.69 m,  14.52 ft / 4.43 m
   - Aft deck: 35.00 %,  14.52 ft / 4.43 m,  14.52 ft / 4.43 m
   - Quarter deck: 15.00 %,  14.52 ft / 4.43 m,  14.52 ft / 4.43 m
   - Average freeboard: 16.30 ft / 4.97 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 110.6 %
- Above water (accommodation/working, high = better): 105.6 %
Waterplane Area: 27,702 Square feet or 2,574 Square metres
Displacement factor (Displacement / loading): 97 %
Structure weight / hull surface area: 146 lbs/sq ft or 711 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.78
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily



[eltf177]

Hardrada has single instead of twin main battery turrets, although I don't think that will make much of a difference.

However, only 0.5-inch deck armor? I'd like at least an inch, and 1.25- to 1.5-inches would be better...

[Alikchi]

Hardrada has single instead of twin main battery turrets, although I don't think that will make much of a difference.

However, only 0.5-inch deck armor? I'd like at least an inch, and 1.25- to 1.5-inches would be better...

Thanks. I fixed the turrets, bumped deck armor to 2in, metric-ified everything and did some other tweaks. Feeling pretty good about it now.

Code Select Expand

Hardrada, Nordic PD Battleship laid down 1903

Displacement:
15,298 t light; 16,286 t standard; 18,526 t normal; 20,318 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(462.60 ft / 462.60 ft) x 80.05 ft x (27.23 / 29.46 ft)
(141.00 m / 141.00 m) x 24.40 m  x (8.30 / 8.98 m)

Armament:
      4 - 11.81" / 300 mm 45.0 cal guns - 826.73lbs / 375.00kg shells, 80 per gun
  Breech loading guns in turret on barbette mounts, 1903 Model
  2 x Twin mounts on centreline ends, evenly spread
      12 - 7.87" / 200 mm 45.0 cal guns - 242.51lbs / 110.00kg shells, 250 per gun
  Breech loading guns in turret on barbette mounts, 1903 Model
  4 x Twin mounts on sides, evenly spread
  2 x Twin mounts on centreline ends, evenly spread
2 raised mounts
      12 - 3.94" / 100 mm 45.0 cal guns - 33.07lbs / 15.00kg shells, 300 per gun
  Breech loading guns in deck and hoist mounts, 1903 Model
  12 x Single mounts on sides, evenly spread
6 raised mounts
      Weight of broadside 6,614 lbs / 3,000 kg
      Main Torpedoes
      2 - 17.7" / 450 mm, 18.04 ft / 5.50 m torpedoes - 0.707 t each, 1.414 t total
submerged bow tubes

Armour:
   - Belts: Width (max) Length (avg) Height (avg)
Main: 11.0" / 280 mm 324.44 ft / 98.89 m 10.73 ft / 3.27 m
Ends: 4.72" / 120 mm   60.98 ft / 18.59 m 10.73 ft / 3.27 m
  77.18 ft / 23.52 m Unarmoured ends
Upper: 3.15" / 80 mm 300.00 ft / 91.44 m 8.00 ft / 2.44 m
  Main Belt covers 108 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.84" / 250 mm 5.91" / 150 mm 9.84" / 250 mm
2nd: 5.91" / 150 mm 1.97" / 50 mm 5.91" / 150 mm
3rd: 0.98" / 25 mm       - 0.98" / 25 mm

   - Armoured deck - single deck:
For and Aft decks: 1.97" / 50 mm
Forecastle: 1.97" / 50 mm  Quarter deck: 1.97" / 50 mm

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

Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 shafts, 24,000 ihp / 17,904 Kw = 20.07 kts
Range 11,993nm at 10.00 kts
Bunker at max displacement = 4,032 tons (100% coal)

Complement:
793 - 1,032

Cost:
£1.738 million / $6.952 million

Distribution of weights at normal displacement:
Armament: 1,361 tons, 7.3 %
   - Guns: 1,358 tons, 7.3 %
   - Weapons: 3 tons, 0.0 %
Armour: 4,712 tons, 25.4 %
   - Belts: 2,135 tons, 11.5 %
   - Armament: 1,245 tons, 6.7 %
   - Armour Deck: 1,035 tons, 5.6 %
   - Conning Towers: 297 tons, 1.6 %
Machinery: 4,138 tons, 22.3 %
Hull, fittings & equipment: 4,978 tons, 26.9 %
Fuel, ammunition & stores: 3,228 tons, 17.4 %
Miscellaneous weights: 110 tons, 0.6 %
   - Hull below water: 10 tons
   - Hull above water: 25 tons
   - On freeboard deck: 50 tons
   - Above deck: 25 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
  15,811 lbs / 7,172 Kg = 19.2 x 11.8 " / 300 mm shells or 3.5 torpedoes
Stability (Unstable if below 1.00): 1.26
Metacentric height 5.5 ft / 1.7 m
Roll period: 14.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.47
Seaboat quality  (Average = 1.00): 1.32

Hull form characteristics:
Hull has a flush deck,
  a straight bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0.643 / 0.652
Length to Beam Ratio: 5.78 : 1
'Natural speed' for length: 21.51 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 53
Bow angle (Positive = bow angles forward): -15.00 degrees
Stern overhang: -5.16 ft / -1.57 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
   - Forecastle: 20.00 %,  22.81 ft / 6.95 m,  18.66 ft / 5.69 m
   - Forward deck: 30.00 %,  18.66 ft / 5.69 m,  14.52 ft / 4.43 m
   - Aft deck: 35.00 %,  14.52 ft / 4.43 m,  14.52 ft / 4.43 m
   - Quarter deck: 15.00 %,  14.52 ft / 4.43 m,  14.52 ft / 4.43 m
   - Average freeboard: 16.30 ft / 4.97 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 104.7 %
- Above water (accommodation/working, high = better): 104.8 %
Waterplane Area: 28,187 Square feet or 2,619 Square metres
Displacement factor (Displacement / loading): 97 %
Structure weight / hull surface area: 142 lbs/sq ft or 691 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.77
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily



[eltf177]

Looks much better now. Pity about the VTE's but hey, Dreadnought's still a few years away...

[Jefgte]

IMO, armour deck 50mm is short
2"5 - 63mm is better

Jef  ;)

[Alikchi]

A South American battleship closely modeled on the historical Rivadavia, with a mix of twins and triple 300mm guns:

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Rivadavia, Andean Battleship laid down 1912

Displacement:
24,091 t light; 25,653 t standard; 28,102 t normal; 30,062 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(583.99 ft / 574.15 ft) x 98.43 ft (Bulges 101.71 ft) x (27.89 / 29.54 ft)
(178.00 m / 175.00 m) x 30.00 m (Bulges 31.00 m)  x (8.50 / 9.00 m)

Armament:
      13 - 11.81" / 300 mm 50.0 cal guns - 892.87lbs / 405.00kg shells, 120 per gun
  Breech loading guns in turret on barbette mounts, 1912 Model
  2 x Twin mounts on centreline ends, evenly spread
2 raised mounts - superfiring
  3 x Triple mounts on centreline, evenly spread
      14 - 5.91" / 150 mm 45.0 cal guns - 99.21lbs / 45.00kg shells, 200 per gun
  Breech loading guns in casemate mounts, 1912 Model
  14 x Single mounts on side ends, majority forward
14 hull mounts in casemates- Limited use in heavy seas
      12 - 3.94" / 100 mm 45.0 cal guns - 30.86lbs / 14.00kg shells, 350 per gun
  Quick firing guns in deck mounts, 1912 Model
  12 x Single mounts on sides, evenly spread
4 raised mounts
      Weight of broadside 13,367 lbs / 6,063 kg

Armour:
   - Belts: Width (max) Length (avg) Height (avg)
Main: 11.8" / 300 mm 373.20 ft / 113.75 m 11.91 ft / 3.63 m
Ends: 4.72" / 120 mm 200.92 ft / 61.24 m 11.91 ft / 3.63 m
Upper: 4.72" / 120 mm 373.20 ft / 113.75 m 8.01 ft / 2.44 m
  Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
1.97" / 50 mm 373.20 ft / 113.75 m 26.74 ft / 8.15 m
Beam between torpedo bulkheads 91.86 ft / 28.00 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 11.8" / 300 mm 5.91" / 150 mm 11.8" / 300 mm
2nd: 5.91" / 150 mm 1.97" / 50 mm 1.97" / 50 mm
3rd: 1.97" / 50 mm 1.97" / 50 mm       -

   - Armoured deck - multiple decks:
For and Aft decks: 2.95" / 75 mm
Forecastle: 2.95" / 75 mm  Quarter deck: 2.95" / 75 mm

   - Conning towers: Forward 11.81" / 300 mm, Aft 2.95" / 75 mm

Machinery:
Coal fired boilers, steam turbines,
Geared drive, 4 shafts, 65,350 shp / 48,751 Kw = 24.73 kts
Range 8,000nm at 12.00 kts
Bunker at max displacement = 4,409 tons (100% coal)

Complement:
1,084 - 1,410

Cost:
£2.507 million / $10.028 million

Distribution of weights at normal displacement:
Armament: 2,532 tons, 9.0 %
   - Guns: 2,532 tons, 9.0 %
Armour: 9,514 tons, 33.9 %
   - Belts: 3,367 tons, 12.0 %
   - Torpedo bulkhead: 727 tons, 2.6 %
   - Armament: 2,842 tons, 10.1 %
   - Armour Deck: 2,285 tons, 8.1 %
   - Conning Towers: 294 tons, 1.0 %
Machinery: 2,866 tons, 10.2 %
Hull, fittings & equipment: 9,038 tons, 32.2 %
Fuel, ammunition & stores: 4,012 tons, 14.3 %
Miscellaneous weights: 140 tons, 0.5 %
   - Hull below water: 10 tons
   - Hull above water: 10 tons
   - On freeboard deck: 20 tons
   - Above deck: 100 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
  35,275 lbs / 16,001 Kg = 42.8 x 11.8 " / 300 mm shells or 6.1 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 6.1 ft / 1.9 m
Roll period: 17.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.52
Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
Hull has a flush deck,
  a ram bow and a cruiser stern
Block coefficient (normal/deep): 0.604 / 0.610
Length to Beam Ratio: 5.65 : 1
'Natural speed' for length: 23.96 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): -15.00 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 %,  20.01 ft / 6.10 m,  18.37 ft / 5.60 m
   - Forward deck: 30.00 %,  18.37 ft / 5.60 m,  18.37 ft / 5.60 m
   - Aft deck: 35.00 %,  18.37 ft / 5.60 m,  18.37 ft / 5.60 m
   - Quarter deck: 15.00 %,  18.37 ft / 5.60 m,  18.37 ft / 5.60 m
   - Average freeboard: 18.50 ft / 5.64 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 80.3 %
- Above water (accommodation/working, high = better): 133.9 %
Waterplane Area: 41,486 Square feet or 3,854 Square metres
Displacement factor (Displacement / loading): 103 %
Structure weight / hull surface area: 180 lbs/sq ft or 879 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.52
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform




And here's an extremely thorough and probably inadvisable 1939 reconstruction of the same vessel:

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Rivadavia (1939 Reconstruction), Andean Battleship laid down 1912 (Engine 1939)

Displacement:
24,832 t light; 26,428 t standard; 28,263 t normal; 29,731 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(583.58 ft / 577.43 ft) x 98.43 ft (Bulges 101.71 ft) x (27.89 / 29.12 ft)
(177.88 m / 176.00 m) x 30.00 m (Bulges 31.00 m)  x (8.50 / 8.88 m)

Armament:
      13 - 11.81" / 300 mm 50.0 cal guns - 892.87lbs / 405.00kg shells, 120 per gun
  Breech loading guns in turret on barbette mounts, 1912 Model
  2 x Twin mounts on centreline ends, evenly spread
2 raised mounts - superfiring
  3 x Triple mounts on centreline, evenly spread
      20 - 4.72" / 120 mm 40.0 cal guns - 48.50lbs / 22.00kg shells, 400 per gun
  Dual purpose guns in deck and hoist mounts, 1939 Model
  10 x Twin mounts on sides, evenly spread
      28 - 1.38" / 35.0 mm 45.0 cal guns - 1.32lbs / 0.60kg shells, 2,000 per gun
  Anti-air guns in deck mounts, 1939 Model
  14 x Twin mounts on sides, evenly spread
6 raised mounts
      Weight of broadside 12,614 lbs / 5,722 kg

Armour:
   - Belts: Width (max) Length (avg) Height (avg)
Main: 11.8" / 300 mm 373.20 ft / 113.75 m 11.91 ft / 3.63 m
Ends: 4.72" / 120 mm 200.92 ft / 61.24 m 11.91 ft / 3.63 m
  3.31 ft / 1.01 m Unarmoured ends
Upper: 4.72" / 120 mm 373.20 ft / 113.75 m 8.01 ft / 2.44 m
  Main Belt covers 99 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
1.97" / 50 mm 373.20 ft / 113.75 m 26.74 ft / 8.15 m
Beam between torpedo bulkheads 91.86 ft / 28.00 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 11.8" / 300 mm 5.91" / 150 mm 11.8" / 300 mm
2nd: 4.72" / 120 mm 1.97" / 50 mm 1.97" / 50 mm
3rd: 0.39" / 10 mm       -       -

   - Armoured deck - multiple decks:
For and Aft decks: 3.94" / 100 mm
Forecastle: 3.94" / 100 mm  Quarter deck: 3.94" / 100 mm

   - Conning towers: Forward 11.81" / 300 mm, Aft 2.95" / 75 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 93,986 shp / 70,113 Kw = 27.05 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 3,303 tons

Complement:
1,089 - 1,416

Cost:
£2.490 million / $9.958 million

Distribution of weights at normal displacement:
Armament: 2,465 tons, 8.7 %
   - Guns: 2,465 tons, 8.7 %
Armour: 10,150 tons, 35.9 %
   - Belts: 3,376 tons, 11.9 %
   - Torpedo bulkhead: 727 tons, 2.6 %
   - Armament: 2,689 tons, 9.5 %
   - Armour Deck: 3,064 tons, 10.8 %
   - Conning Towers: 295 tons, 1.0 %
Machinery: 2,543 tons, 9.0 %
Hull, fittings & equipment: 9,294 tons, 32.9 %
Fuel, ammunition & stores: 3,431 tons, 12.1 %
Miscellaneous weights: 380 tons, 1.3 %
   - Hull below water: 5 tons
   - Hull above water: 5 tons
   - On freeboard deck: 120 tons
   - Above deck: 250 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
  35,054 lbs / 15,900 Kg = 42.6 x 11.8 " / 300 mm shells or 6.3 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 4.9 ft / 1.5 m
Roll period: 19.4 seconds
Steadiness - As gun platform (Average = 50 %): 65 %
- Recoil effect (Restricted arc if above 1.00): 0.57
Seaboat quality  (Average = 1.00): 0.82

Hull form characteristics:
Hull has a flush deck,
  a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.604 / 0.609
Length to Beam Ratio: 5.68 : 1
'Natural speed' for length: 24.03 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 79
Bow angle (Positive = bow angles forward): 15.00 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 %,  22.97 ft / 7.00 m,  19.36 ft / 5.90 m
   - Forward deck: 30.00 %,  19.36 ft / 5.90 m,  18.37 ft / 5.60 m
   - Aft deck: 35.00 %,  18.37 ft / 5.60 m,  18.37 ft / 5.60 m
   - Quarter deck: 15.00 %,  18.37 ft / 5.60 m,  18.37 ft / 5.60 m
   - Average freeboard: 19.01 ft / 5.79 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 76.1 %
- Above water (accommodation/working, high = better): 135.7 %
Waterplane Area: 41,723 Square feet or 3,876 Square metres
Displacement factor (Displacement / loading): 102 %
Structure weight / hull surface area: 182 lbs/sq ft or 886 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.54
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather