Sailing rules suggestions

[Walter]

I get a bunch of "NaN" warnings with your sim due to the lack of engines... and I guess that is also the reason why I enter those "1"s in my sim.

Sovereign of the Seas, United States Clipper ship laid down 1852

Displacement:
   NaN (非数値) t light; NaN (非数値) t standard; 5,273 t normal; NaN (非数値) t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (252.00 ft / 252.00 ft) x 45.60 ft x (29.20 / NaN (非数値) ft)
   (76.81 m / 76.81 m) x 13.90 m  x (8.90 / NaN (非数値) m)

Machinery:
   No fuel, Internal combustion motors,
   No drive to shaft, 0 shafts, 28,512 shp / 21,270 Kw = 22.00 kts
   Range 0nm at 0.00 kts
   Bunker at max displacement = NaN (非数値) tons
     Caution: Too much power for number of propellor shafts

Complement:
   309 - 402

Cost:
   £NaN (非数値) million / $NaN (非数値) million

Distribution of weights at normal displacement:
   Armament: 0 tons, 0.0%
   Machinery: NaN (非数値) tons, NaN (非数値)
   Hull, fittings & equipment: NaN (非数値) tons, NaN (非数値)
   Fuel, ammunition & stores: NaN (非数値) tons, NaN (非数値)
   Miscellaneous weights: 3,070 tons, 58.2%
      - Hull below water: 2,050 tons
      - Above deck: 1,020 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     NaN (非数値) lbs / NaN (非数値) Kg = NaN (非数値) x 6 " / 152 mm shells or NaN (非数値) torpedoes
   Stability (Unstable if below 1.00): NaN (非数値)
   Metacentric height NaN (非数値) ft / NaN (非数値) m
   Roll period: NaN (非数値) seconds
   Steadiness   - As gun platform (Average = 50 %): NaN (非数値) %
         - Recoil effect (Restricted arc if above 1.00): 0.00
   Seaboat quality  (Average = 1.00): NaN (非数値)

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.550 / NaN (非数値)
   Length to Beam Ratio: 5.53 : 1
   'Natural speed' for length: 15.87 kts
   Power going to wave formation at top speed: 69 %
   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 (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00%,  22.00 ft / 6.71 m,  19.00 ft / 5.79 m
      - Forward deck:   30.00%,  19.00 ft / 5.79 m,  17.00 ft / 5.18 m
      - Aft deck:   35.00%,  17.00 ft / 5.18 m,  17.00 ft / 5.18 m
      - Quarter deck:   15.00%,  17.00 ft / 5.18 m,  17.00 ft / 5.18 m
      - Average freeboard:      17.94 ft / 5.47 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): NaN (非数値)
      - Above water (accommodation/working, high = better): 83.7%
   Waterplane Area: 7,778 Square feet or 723 Square metres
   Displacement factor (Displacement / loading): NaN (非数値)
   Structure weight / hull surface area: NaN (非数値) lbs/sq ft or NaN (非数値) Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: NaN (非数値)
      - Longitudinal: NaN (非数値)
      - Overall: NaN (非数値)
   Extremely poor machinery, storage, compartmentation space
   Cramped accommodation and workspace room

Warning: Too much power for number of propellor shafts

[KWorld]

Interesting......  Here's a revised version:

Sovereign of the Seas, United States Clipper ship laid down 1852

Displacement:
   5,167 t light; 5,273 t standard; 5,273 t normal; 5,273 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (252.00 ft / 252.00 ft) x 45.60 ft x (29.20 / 29.20 ft)
   (76.81 m / 76.81 m) x 13.90 m  x (8.90 / 8.90 m)

Machinery:
   Immobile floating battery

Complement:
   309 - 402

Cost:
   £0.181 million / $0.723 million

Distribution of weights at normal displacement:
   Armament: 0 tons, 0.0 %
   Machinery: 0 tons, 0.0 %
   Hull, fittings & equipment: 1,999 tons, 37.9 %
   Fuel, ammunition & stores: 105 tons, 2.0 %
   Miscellaneous weights: 3,168 tons, 60.1 %
      - Hull below water: 1,000 tons
      - Hull above water: 850 tons
      - Above deck: 1,318 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1,716 lbs / 778 Kg = 37.0 x 6 " / 152 mm shells or 0.7 torpedoes
   Stability (Unstable if below 1.00): 0.77
   Metacentric height 0.8 ft / 0.2 m
   Roll period: 21.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.00
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.550 / 0.550
   Length to Beam Ratio: 5.53 : 1
   'Natural speed' for length: 15.87 kts
   Power going to wave formation at top speed: 0 %
   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 (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  22.00 ft / 6.71 m,  19.00 ft / 5.79 m
      - Forward deck:   30.00 %,  19.00 ft / 5.79 m,  17.00 ft / 5.18 m
      - Aft deck:   35.00 %,  17.00 ft / 5.18 m,  17.00 ft / 5.18 m
      - Quarter deck:   15.00 %,  17.00 ft / 5.18 m,  17.00 ft / 5.18 m
      - Average freeboard:      17.94 ft / 5.47 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 39.5 %
      - Above water (accommodation/working, high = better): 83.7 %
   Waterplane Area: 7,778 Square feet or 723 Square metres
   Displacement factor (Displacement / loading): 166 %
   Structure weight / hull surface area: 120 lbs/sq ft or 587 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.81
      - Longitudinal: 6.70
      - Overall: 1.00
   Caution: Poor stability - excessive risk of capsizing
   Excellent machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, rides out heavy weather easily

Above decks weight is masts and sails sufficient to drive the ship at 22 knots (25% normal displacement).

[Walter]

I get the same "NaN" warning with that version as well. I tried with an older SS3 version I still have and got the same warning. All due to the fact that the engines have not been selected.

Edit: Would the 25% of the normal displacement not give you 27 knots?

[KWorld]

Odd.  I'm just using SS3b3, so nothing special, and if I load it up from the file it loads fine and gives no NaN errors.


As far as the speed goes, I was using Darman's proposal for extra cost for over natural speed.

[Walter]

So do I. If others do not have that problem, then the only thing I can think of that is causing it is because of my computer settings to run certain things (which should be obvious with the "(非数値)" bits in my report).

With that second sim, you used 1/3 of the natural speed as test?
Stability is a lot worse on that one due to the additional weight higher up in the ship. With the first one, you could correct it with the trim, but the second one is beyond trimming...

[Darman]

As far as the speed goes, I was using Darman's proposal for extra cost for over natural speed.

With that second sim, you used 1/3 of the natural speed as test?

I was advocating using 1/2 of the natural speed as costing 5% displacement, plus 1% displacement for every additional knot up to the natural speed and 2% for every additional knot of maximum speed. 

[KWorld]

With that second sim, you used 1/3 of the natural speed as test?
Stability is a lot worse on that one due to the additional weight higher up in the ship. With the first one, you could correct it with the trim, but the second one is beyond trimming...

The additional weight is because I adjusted the draft of the ship to match the original, which drove up her normal displacement.

[Walter]

The additional weight is because I adjusted the draft of the ship to match the original, which drove up her normal displacement.

Originally, you had 2050 tons below the waterline. With the second sim, it is only 1000 tons. The shift of those 1050 tons to positions above the waterline (a.k.a "the additional weight higher up in the ship" that I mentioned) is what dragged the stability down from 0.92 to 0.77.