Simming Raiders...

[Desertfox]

How would you sim a sailing ship raider? I want to sim Captain Sparrow's Black Pearl. She would probably look a bit like the German Seeadler.


http://www.german-navy.de/hochseeflotte/ships/auxcruiser/seeadler/index.html

[Korpen]

The short anwser would be, "You don´t" at least not with springsharp.
I would say that you have to use a historic ships with minimal changes.

[Desertfox]

My first try, the problem seems to be the misc weight. SS3 might actually work better, but SS2 puts all the weight above the waterline seriously aaffecting stability.


Black Pearl, New Switzerland Privateer laid down 1890 (Engine 1905)

Displacement:
   3,037 t light; 3,118 t standard; 3,463 t normal; 3,740 t full load

Dimensions: Length overall / water x beam x draught
   290.00 ft / 290.00 ft x 40.00 ft x 19.00 ft (normal load)
   88.39 m / 88.39 m x 12.19 m  x 5.79 m

Armament:
      4 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1890 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread
      4 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.89kg shells, 1890 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 136 lbs / 62 kg
   Shells per gun, main battery: 150
   4 - 20.0" / 508 mm above water torpedoes

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 1 shaft, 3,078 shp / 2,296 Kw = 15.00 kts
   Range 5,000nm at 10.00 kts
   Bunker at max displacement = 621 tons (50% coal)

Complement:
   225 - 293

Cost:
   £0.155 million / $0.619 million

Distribution of weights at normal displacement:
   Armament: 17 tons, 0.5 %
   Machinery: 244 tons, 7.1 %
   Hull, fittings & equipment: 1,776 tons, 51.3 %
   Fuel, ammunition & stores: 426 tons, 12.3 %
   Miscellaneous weights: 1,000 tons, 28.9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     5,271 lbs / 2,391 Kg = 164.7 x 4.0 " / 102 mm shells or 1.6 torpedoes
   Stability (Unstable if below 1.00): 1.02
   Metacentric height 1.3 ft / 0.4 m
   Roll period: 14.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 42 %
         - Recoil effect (Restricted arc if above 1.00): 0.05
   Seaboat quality  (Average = 1.00): 1.51

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.550
   Length to Beam Ratio: 7.25 : 1
   'Natural speed' for length: 17.03 kts
   Power going to wave formation at top speed: 41 %
   Trim (Max stability = 0, Max steadiness = 100): 23
   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:      20.00 ft / 6.10 m
      - Forecastle (30 %):   12.00 ft / 3.66 m
      - Mid (50 %):      12.00 ft / 3.66 m
      - Quarterdeck (15 %):   12.00 ft / 3.66 m
      - Stern:      12.00 ft / 3.66 m
      - Average freeboard:   12.96 ft / 3.95 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 59.1 %
      - Above water (accommodation/working, high = better): 62.6 %
   Waterplane Area: 7,851 Square feet or 729 Square metres
   Displacement factor (Displacement / loading): 213 %
   Structure weight / hull surface area: 128 lbs/sq ft or 624 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.91
      - Longitudinal: 4.76
      - Overall: 2.09
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is cramped
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[Korpen]

My first try, the problem seems to be the misc weight. SS3 might actually work better, but SS2 puts all the weight above the waterline seriously aaffecting stability.

You mean like were the masts and everything is situated?

[Desertfox]

Well the masts and rigging shouldnt be more than 150 tons. The cargo (say 1,000 tons) and ballast would be below the waterline and I can't accurately sim that.

[maddox]

That is why the fleet tenders have that much range. The coal is simming the distributed weights.