Early Era Test

[Nobody]

I tried using SpringSharp3 - because of its better gun management - just to be reminded how un-user-friedly it is-

A1,  Aviso laid down 1885

Displacement:
   3.876 t light; 4.026 t standard; 4.804 t normal; 5.426 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (344,49 ft / 341,21 ft) x 39,37 ft x (22,97 / 25,30 ft)
   (105,00 m / 104,00 m) x 12,00 m  x (7,00 / 7,71 m)

Armament:
      4 - 5,91" / 150 mm 35,0 cal guns - 88,18lbs / 40,00kg shells, 200 per gun
     Breech loading guns in Coles/Ericsson turret mounts, 1885 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      8 - 3,46" / 88,0 mm 35,0 cal guns - 17,64lbs / 8,00kg shells, 150 per gun
     Breech loading guns in casemate mounts, 1885 Model
     8 x Single mounts on sides, evenly spread
      6 - 1,97" / 50,0 mm 35,0 cal guns - 3,31lbs / 1,50kg shells, 250 per gun
     Quick firing guns in deck mounts, 1885 Model
     2 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
     4 x Single mounts on sides, evenly spread
      Weight of broadside 514 lbs / 233 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Ends:   Unarmoured

   - Torpedo Bulkhead - Strengthened structural bulkheads:
      0,39" / 10 mm   328,08 ft / 100,00 m   21,00 ft / 6,40 m
   Beam between torpedo bulkheads 37,73 ft / 11,50 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9,84" / 250 mm   7,87" / 200 mm            -
   2nd:   5,91" / 150 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 3,15" / 80 mm
   Forecastle: 2,95" / 75 mm  Quarter deck: 2,95" / 75 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 3 shafts, 9.300 ihp / 6.938 Kw = 19,08 kts
   Range 2.400nm at 15,00 kts
   Bunker at max displacement = 1.400 tons (100% coal)

Complement:
   288 - 375

Cost:
   £0,423 million / $1,691 million

Distribution of weights at normal displacement:
   Armament: 105 tons, 2,2%
      - Guns: 105 tons, 2,2%
   Armour: 832 tons, 17,3%
      - Torpedo bulkhead: 100 tons, 2,1%
      - Armament: 190 tons, 3,9%
      - Armour Deck: 542 tons, 11,3%
   Machinery: 1.808 tons, 37,6%
   Hull, fittings & equipment: 1.122 tons, 23,4%
   Fuel, ammunition & stores: 927 tons, 19,3%
   Miscellaneous weights: 10 tons, 0,2%
      - On freeboard deck: 10 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     2.368 lbs / 1.074 Kg = 24,9 x 5,9 " / 150 mm shells or 0,6 torpedoes
   Stability (Unstable if below 1.00): 1,29
   Metacentric height 2,0 ft / 0,6 m
   Roll period: 11,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 75 %
         - Recoil effect (Restricted arc if above 1.00): 0,25
   Seaboat quality  (Average = 1.00): 1,36

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,545 / 0,559
   Length to Beam Ratio: 8,67 : 1
   'Natural speed' for length: 18,47 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 55
   Bow angle (Positive = bow angles forward): 5,00 degrees
   Stern overhang: 2,13 ft / 0,65 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20,00%,  13,12 ft / 4,00 m,  11,48 ft / 3,50 m
      - Forward deck:   30,00%,  11,48 ft / 3,50 m,  9,84 ft / 3,00 m
      - Aft deck:   35,00%,  9,84 ft / 3,00 m,  9,84 ft / 3,00 m
      - Quarter deck:   15,00%,  9,84 ft / 3,00 m,  11,48 ft / 3,50 m
      - Average freeboard:      10,67 ft / 3,25 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 134,8%
      - Above water (accommodation/working, high = better): 63,1%
   Waterplane Area: 9.331 Square feet or 867 Square metres
   Displacement factor (Displacement / loading): 100%
   Structure weight / hull surface area: 77 lbs/sq ft or 378 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,94
      - Longitudinal: 1,73
      - Overall: 1,00
   Cramped machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Btw, why can I only use simple reciprocating engines before 1885? Ships like the "Colossus" (commissioned 1882) definitely had compound engines already.

[Nobody]

And another one:
P1,  Ironclad Battleship laid down 1880

Displacement:
   8.007 t light; 8.370 t standard; 8.813 t normal; 9.167 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (393,70 ft / 393,70 ft) x 54,46 ft x (26,74 / 27,58 ft)
   (120,00 m / 120,00 m) x 16,60 m  x (8,15 / 8,41 m)

Armament:
      4 - 11,02" / 280 mm 35,0 cal guns - 579,02lbs / 262,64kg shells, 120 per gun
     Breech loading guns in Coles/Ericsson turret mounts, 1880 Model
     2 x Single mounts on sides amidships
      4 - 4,72" / 120 mm 35,0 cal guns - 44,09lbs / 20,00kg shells, 200 per gun
     Breech loading guns in Coles/Ericsson turret mounts, 1880 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts
      4 - 4,72" / 120 mm 35,0 cal guns - 44,09lbs / 20,00kg shells, 100 per gun
     Breech loading guns in casemate mounts, 1880 Model
     4 x Single mounts on sides, evenly spread
      4 - 2,36" / 60,0 mm 35,0 cal guns - 5,51lbs / 2,50kg shells, 250 per gun
     Quick firing guns in deck mounts, 1880 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 2.691 lbs / 1.221 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13,0" / 330 mm   229,66 ft / 70,00 m   12,47 ft / 3,80 m
   Ends:   Unarmoured
     Main Belt covers 90% of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13,8" / 350 mm   13,0" / 330 mm            -
   2nd:   7,87" / 200 mm   5,91" / 150 mm            -
   3rd:   5,91" / 150 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 3,54" / 90 mm
   Forecastle: 2,95" / 75 mm  Quarter deck: 2,95" / 75 mm

   - Conning towers: Forward 14,96" / 380 mm, Aft 11,81" / 300 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 6.575 ihp / 4.905 Kw = 15,67 kts
   Range 2.000nm at 10,00 kts
   Bunker at max displacement = 797 tons (100% coal)

Complement:
   454 - 591

Cost:
   £0,660 million / $2,640 million

Distribution of weights at normal displacement:
   Armament: 470 tons, 5,3%
      - Guns: 470 tons, 5,3%
   Armour: 3.315 tons, 37,6%
      - Belts: 1.625 tons, 18,4%
      - Armament: 505 tons, 5,7%
      - Armour Deck: 939 tons, 10,6%
      - Conning Towers: 246 tons, 2,8%
   Machinery: 1.358 tons, 15,4%
   Hull, fittings & equipment: 2.864 tons, 32,5%
   Fuel, ammunition & stores: 806 tons, 9,1%
   Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     7.921 lbs / 3.593 Kg = 13,9 x 11,0 " / 280 mm shells or 1,8 torpedoes
   Stability (Unstable if below 1.00): 1,10
   Metacentric height 2,4 ft / 0,7 m
   Roll period: 14,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 51 %
         - Recoil effect (Restricted arc if above 1.00): 0,46
   Seaboat quality  (Average = 1.00): 1,39

Hull form characteristics:
   Hull has raised forecastle, raised quarterdeck ,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,538 / 0,543
   Length to Beam Ratio: 7,23 : 1
   'Natural speed' for length: 19,84 kts
   Power going to wave formation at top speed: 36 %
   Trim (Max stability = 0, Max steadiness = 100): 37
   Bow angle (Positive = bow angles forward): 0,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   21,00%,  17,06 ft / 5,20 m,  17,06 ft / 5,20 m
      - Forward deck:   29,00%,  9,19 ft / 2,80 m,  9,19 ft / 2,80 m
      - Aft deck:   29,93%,  9,19 ft / 2,80 m,  9,19 ft / 2,80 m
      - Quarter deck:   20,07%,  17,06 ft / 5,20 m,  17,06 ft / 5,20 m
      - Average freeboard:      12,42 ft / 3,79 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 71,0%
      - Above water (accommodation/working, high = better): 57,0%
   Waterplane Area: 14.797 Square feet or 1.375 Square metres
   Displacement factor (Displacement / loading): 112%
   Structure weight / hull surface area: 129 lbs/sq ft or 629 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,92
      - Longitudinal: 2,09
      - Overall: 1,00
   Excellent machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Good seaboat, rides out heavy weather easily

[Jefgte]

AC, Australia Central Citadel AC laid down 1880
Barbette ship
Central Citadel Cruiser

Displacement:
   6 200 t light; 6 401 t standard; 6 963 t normal; 7 412 t full load

Dimensions: Length overall / water x beam x draught
   393.70 ft / 393.70 ft x 52.49 ft (Bulges 65.62 ft) x 17.15 ft (normal load)
   120.00 m / 120.00 m x 16.00 m (Bulges 20.00 m)  x 5.23 m

Armament:
     4 - 9.00" / 229 mm guns in single mounts, 309.83lbs / 140.54kg shells, 1880 Model
     Breech loading guns in open barbettes
     on side, all amidships
     4 - 4.72" / 120 mm guns in single mounts, 44.82lbs / 20.33kg shells, 1880 Model
     Quick firing guns in open barbettes
     on side ends, evenly spread
     4 - 2.00" / 50.8 mm guns in single mounts, 3.40lbs / 1.54kg shells, 1880 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
     4 - 0.50" / 12.7 mm guns in single mounts, 0.05lbs / 0.02kg shells, 1880 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 1 432 lbs / 650 kg
   Shells per gun, main battery: 75

Armour:
  - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.72" / 120 mm   295.28 ft / 90.00 m   9.84 ft / 3.00 m
   Ends:   1.97" / 50 mm     82.02 ft / 25.00 m   8.01 ft / 2.44 m
     16.40 ft / 5.00 m Unarmoured ends
   Upper:   1.97" / 50 mm   295.28 ft / 90.00 m   8.01 ft / 2.44 m
     Main Belt covers 115 % of normal length

  - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:         -            -         4.72" / 120 mm
   2nd:         -            -         1.97" / 50 mm
   3rd:   0.79" / 20 mm         -               -
   4th:   0.50" / 13 mm         -               -

  - Armour deck: 1.18" / 30 mm, Conning tower: 3.94" / 100 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 9 775 ihp / 7 292 Kw = 18.00 kts
   Range 3 000nm at 10.00 kts
   Bunker at max displacement = 1 011 tons (100% coal)
             
This ship is also equipped with sails

Complement:
   380 - 495

Cost:
   £0.650 million / $2.601 million

Distribution of weights at normal displacement:
   Armament: 179 tons, 2.6 %
   Armour: 1 385 tons, 19.9 %
      - Belts: 814 tons, 11.7 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 225 tons, 3.2 %
      - Armour Deck: 315 tons, 4.5 %
      - Conning Tower: 31 tons, 0.4 %
   Machinery: 2 020 tons, 29.0 %
   Hull, fittings & equipment: 2 471 tons, 35.5 %
   Fuel, ammunition & stores: 763 tons, 11.0 %
   Miscellaneous weights: 146 tons, 2.1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4 962 lbs / 2 251 Kg = 16.0 x 9.0 " / 229 mm shells or 1.0 torpedoes
   Stability (Unstable if below 1.00): 1.55
   Metacentric height 4.0 ft / 1.2 m
   Roll period: 13.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 84 %
         - Recoil effect (Restricted arc if above 1.00): 0.13
   Seaboat quality  (Average = 1.00): 1.68

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.550
   Length to Beam Ratio: 6.00 : 1
   'Natural speed' for length: 19.84 kts
   Power going to wave formation at top speed: 44 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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:      16.40 ft / 5.00 m
      - Forecastle (22 %):   16.40 ft / 5.00 m
      - Mid (50 %):      12.47 ft / 3.80 m
      - Quarterdeck (20 %):   12.47 ft / 3.80 m
      - Stern:      12.47 ft / 3.80 m
      - Average freeboard:   13.88 ft / 4.23 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 115.4 %
      - Above water (accommodation/working, high = better): 97.0 %
   Waterplane Area: 14 423 Square feet or 1 340 Square metres
   Displacement factor (Displacement / loading): 99 %
   Structure weight / hull surface area: 108 lbs/sq ft or 529 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.37
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[Korpen]

AC, Australia Central Citadel AC laid down 1880
Barbette ship
Central Citadel Cruiser

What is the armour for? 12cm compound is too thin to stop any form of shot, and the same goes for the 5cm armour. The deck is also too thin to keep shot out and protect buoyancy.

Bulges seem weird; if you are trying to simulate a tumblehome there is really no way to do that effectively in SS.

Do we have any clue about how to best sim rigging? It is after all a standard feature on ships until about 1890.

[Jefgte]

...
What is the armour for? 12cm compound is too thin to stop any form of shot, and the same goes for the 5cm armour. The deck is also too thin to keep shot out and protect buoyancy...

That is the choice...
4x229 & light armor or lighter guns with stronger armor.

...Bulges seem weird; if you are trying to simulate a tumblehome there is really no way to do that effectively in SS...

I think that bulges are the better way to simulate tumblehome.

...Do we have any clue about how to best sim rigging? It is after all a standard feature on ships until about 1890.

SS doesnt simulate the weight of the superstructures, low, medium or high like Jap pagoda mast.

IMO, rigging & sails are certainly not critical with a Length to Beam Ratio: 6.00 : 1
& superstructures at this period are minimum.

Jef

[Korpen]

...
What is the armour for? 12cm compound is too thin to stop any form of shot, and the same goes for the 5cm armour. The deck is also too thin to keep shot out and protect buoyancy...

That is the choice...
4x229 & light armor or lighter guns with stronger armor.

The problem with that armour is that you could just as well remove in completely and it would have zero impact on the ships combat capability. 12cm compound is simply too little too offer any protection against anything but the very smallest guns, even a 15cm gun will penetrate at combat ranges.
If you should give up on anything it might be speed, as that is almost excessive.

...Bulges seem weird; if you are trying to simulate a tumblehome there is really no way to do that effectively in SS...

I think that bulges are the better way to simulate tumblehome.

No, as the point of bulges is that they extend beyond the area covered by the armoured deck. As you can see when looking at a cross-section of a tumblehome ship they are no different from a non-tumblehome below the waterline, which is were bulges have effect. So a tumblehome in not correctly simulated by using bulges.

...Do we have any clue about how to best sim rigging? It is after all a standard feature on ships until about 1890.

SS doesnt simulate the weight of the superstructures, low, medium or high like Jap pagoda mast.

IMO, rigging & sails are certainly not critical with a Length to Beam Ratio: 6.00 : 1
& superstructures at this period are minimum.

Jef

While it is true that SS and superstructure are any issue, when it comes to rigging I think there would be value in trying to work out some rule of thumb.

[Sachmle]

Something to remember when designing older ships

The equivalent strengths of the different armor plates was as follows: 15 in (381 mm) of wrought iron was equivalent to 12 in (305 mm) of either plain steel or compound iron and steel armor, and to 7.75 in (197 mm) of Harvey armor or 5.75 in (146 mm) of Krupp armor.

- From Sondhaus, Naval Warfare 1815–1914 p. 166.

[Kaiser Kirk]

Question- should we assign Misc Weight to torpedo nets & booms? 

[Delta Force]

How would you sim a tumblehome hull design anyways?

[Logi]

I don't think you can. You could try negative bow angles and stern overhang, but SS ignores those in it's specs completely, it's just filler. Alternatively you could try the bulge method, but the problems are as Korpen pointed out.

Maybe just design the ship with a so-and-so larger beam than a ship without tumblehome?

[Kaiser Kirk]

Modeled on the 8,524 ton Admiral Nakhimov, laid down 1884, completed 1888.
This is 1885, as SS2 doesn't allow compound engines in 1884.

No idea how to model the side sponsons with twin turrets, or the brig-rig. There's enough Misc weight to cover the latter hopefully.
Source lists barbette armor, so I put the main guns in turret + barbette.
Armor deck isn't listed for the ship, but the earlier 1875 General Admiral class had 1", so I used that. Given the <5000 yard range, it's only meant as a splinter deck anyhow.

The "quick fire" are revolver cannon.

General Rustam, Safavid Empire Armored Frigate laid down 1885

Displacement:
   7,587 t light; 8,061 t standard; 8,767 t normal; 9,331 t full load

Dimensions: Length overall / water x beam x draught
   335.00 ft / 335.00 ft x 61.00 ft x 27.50 ft (normal load)
   102.11 m / 102.11 m x 18.59 m  x 8.38 m

Armament:
      4 - 7.00" / 178 mm guns (2x2 guns), 150.00lbs / 68.04kg shells, 1885 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      4 - 7.00" / 178 mm guns (2x2 guns), 150.00lbs / 68.04kg shells, 1885 Model
     Breech loading guns in turrets (on barbettes)
     on side, all amidships
      12 - 4.75" / 121 mm guns in single mounts, 50.00lbs / 22.68kg shells, 1885 Model
     Breech loading guns in casemate mounts
     on side, evenly spread
     12 guns in hull casemates - Limited use in all but light seas
      4 - 3.55" / 90.2 mm guns in single mounts, 20.00lbs / 9.07kg shells, 1885 Model
     Breech loading guns in deck mounts
     on side, evenly spread
      10 - 1.75" / 44.5 mm guns in single mounts, 2.50lbs / 1.13kg shells, 1885 Model
     Quick firing guns in deck mounts
     on side, evenly spread
   Weight of broadside 1,905 lbs / 864 kg
   Shells per gun, main battery: 250
   4 - 15.0" / 381 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   10.0" / 254 mm   220.00 ft / 67.06 m   10.00 ft / 3.05 m
   Ends:   6.00" / 152 mm   114.99 ft / 35.05 m   10.00 ft / 3.05 m
   Upper:   6.00" / 152 mm   220.00 ft / 67.06 m   8.00 ft / 2.44 m
     Main Belt covers 101 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   8.00" / 203 mm   3.00" / 76 mm      8.00" / 203 mm
   2nd:   8.00" / 203 mm   3.00" / 76 mm      8.00" / 203 mm
   3rd:   6.00" / 152 mm         -               -
   4th:   0.50" / 13 mm         -               -
   5th:   0.50" / 13 mm         -               -

   - Armour deck: 1.00" / 25 mm, Conning tower: 6.00" / 152 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 8,978 ihp / 6,697 Kw = 17.00 kts
   Range 4,000nm at 10.00 kts
   Bunker at max displacement = 1,269 tons (100% coal)

Complement:
   452 - 588

Cost:
   £0.717 million / $2.867 million

Distribution of weights at normal displacement:
   Armament: 246 tons, 2.8 %
   Armour: 2,707 tons, 30.9 %
      - Belts: 1,693 tons, 19.3 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 696 tons, 7.9 %
      - Armour Deck: 263 tons, 3.0 %
      - Conning Tower: 55 tons, 0.6 %
   Machinery: 1,745 tons, 19.9 %
   Hull, fittings & equipment: 2,648 tons, 30.2 %
   Fuel, ammunition & stores: 1,180 tons, 13.5 %
   Miscellaneous weights: 240 tons, 2.7 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8,243 lbs / 3,739 Kg = 52.0 x 7.0 " / 178 mm shells or 1.4 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 3.2 ft / 1.0 m
   Roll period: 14.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.32
   Seaboat quality  (Average = 1.00): 1.71

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.546
   Length to Beam Ratio: 5.49 : 1
   'Natural speed' for length: 18.30 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 41
   Bow angle (Positive = bow angles forward): -15.00 degrees
   Stern overhang: -6.00 ft / -1.83 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      15.67 ft / 4.78 m
      - Forecastle (20 %):   15.67 ft / 4.78 m
      - Mid (50 %):      15.67 ft / 4.78 m
      - Quarterdeck (15 %):   15.67 ft / 4.78 m
      - Stern:      15.67 ft / 4.78 m
      - Average freeboard:   15.67 ft / 4.78 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 91.3 %
      - Above water (accommodation/working, high = better): 87.4 %
   Waterplane Area: 14,208 Square feet or 1,320 Square metres
   Displacement factor (Displacement / loading): 104 %
   Structure weight / hull surface area: 115 lbs/sq ft or 562 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.88
      - Longitudinal: 3.00
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[Nobody]

This is 1885, as SS2 doesn't allow compound engines in 1884.

I already mentioned that in my first post. Maybe the reason is that SS2 and 3 don't know (2-stage) compound engines, but only single-stage="simple" and three-stage/triple="complex" expansion engines?
Anyway I think we have found or first tech step.

[Korpen]

This is 1885, as SS2 doesn't allow compound engines in 1884.

I already mentioned that in my first post. Maybe the reason is that SS2 and 3 don't know (2-stage) compound engines, but only single-stage="simple" and three-stage/triple="complex" expansion engines?
Anyway I think we have found or first tech step.

More to the point, simple or complex reciprocating steam engines do not matter much, and in 1885 (first year SS allows complex) engines there is no difference at all in performance.
So I see not problem in lumping together everything that is not VTE as "simple reciprocating".

[Korpen]

Modeled on the 8,524 ton Admiral Nakhimov, laid down 1884, completed 1888.
This is 1885, as SS2 doesn't allow compound engines in 1884.

No idea how to model the side sponsons with twin turrets, or the brig-rig. There's enough Misc weight to cover the latter hopefully.
Source lists barbette armor, so I put the main guns in turret + barbette.
Armor deck isn't listed for the ship, but the earlier 1875 General Admiral class had 1", so I used that. Given the <5000 yard range, it's only meant as a splinter deck anyhow.

The "quick fire" are revolver cannon.

I have found references to her deck armour being about 75mm thick. Also the ship originally had open barbettes, it was only later that the guns got splinter shields.

Remember that in 1885 the QF revolution was only just starting so there was not any need for intermediate armour to protect against masses of HE shells. This is why most ships in this period have the thickest possible armour protecting the engines and armament, and then a thick deck to protect the buoyancy of the unprotected ends.

A thick deck armour is a big benefit as the kind of shot that will defeat 15cm armour will have no problem punching a hole in the deck as well. If the enemy tires to use shell instead he might hurt the ship, but he cannot sink her or seriously affect her fighting power.

[Nobody]

This is 1885, as SS2 doesn't allow compound engines in 1884.

I already mentioned that in my first post. Maybe the reason is that SS2 and 3 don't know (2-stage) compound engines, but only single-stage="simple" and three-stage/triple="complex" expansion engines?
Anyway I think we have found or first tech step.

More to the point, simple or complex reciprocating steam engines do not matter much, and in 1885 (first year SS allows complex) engines there is no difference at all in performance.
So I see not problem in lumping together everything that is not VTE as "simple reciprocating".

Interesting, I didn't know that. The difference between the two rises after that though.

More surprisingly, there is no difference between the two concerning fuel consumption at all! That's the opposite of what I would have expected.