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					This experimental program is for calculating stability and speed figures for multi-hulls.
Look regularly for updates.
                           model                         manufacturer


                                      centerboard out-rigger
                           amount     yes=1       average             center-hull beams rig
                           of hulls   no =0       weight kg           weight kg weight kg weight kg

input            ===>          3              0             0.80         1.30       0.74        1.26

theoretical
weight kg                       4.9   kg
optimum sailing angle          8.63   degr.
stability                      2.37   kg/m
torque                         1.25   kg/m
stability resurve              1.12                      Difference between stability and torque must be "0" or more. Stability resurve te
force                          2.69                      The force is a number which indicates the forewath trust
maximum wave speed             4.93   km/h               maximum wave speed of the boat
actuel speed                   7.48   km/h
max. power performance         14.1
IWEMA rating                 118.98                      performance expectation


                                                                                            centerboard
                                      power              IWEMA                   amount     yes=1
multi-hulls                angle      (approx.)          rating                  of hulls   no =0

Triana                         8.00               14.0        119.0                   3          0
Butterfly                     10.95               10.6        107.0                   3          1




                                      power              IWEMA                   hull      balast
mono-hulls                 angle      (approx.)          rating                  weight kg weight kg


        A-class               33          7.4               121.4                   5.00       18.00
      Micro Magic             49          12.3              65.0                    0.60       0.40
RUBIN (approx.)               48          7.5               102.5                   3.10       3.40
        Windstar              30          9.9               101.6                   2.00       2.20
        K-klasse              28          7.1               115.4                   6.50       12.00

        M-klasse TripleB      56          12.5              122.9                   1.8         3.6
            AC 1:18           50          7.7               112.4                   1.10        2.5
                                   "*" These dimensions must be measured at 2/3 of the length of the boat. Starting at the bow.


                                                                          depth of      total          total
                                   out-rigger center-hull depth of        second or     hight          hight              shortest
                       total       wide cm wide cm        out-rigger      center-hull   of outrigger   center-hull        water line in
                       wide cm                water
                                   water line cm line cm in rest cm       in rest cm    in rest cm     in rest cm         rest cm

                         120.00        7.50        7.50            0            6            14              14                103.00
                                   *          *              *            *             *              *




 ty and torque must be "0" or more. Stability resurve tels you when to adjust/install a differand sail (and / or keel).
ich indicates the forewath trust




                       out-rigger                                                       out-rigger    center-hull   depth of
                       average center-hullbeams              rig          total         wide cm       wide cm       out-rigger
                       weight kg weight kg weight kg         weight kg    wide cm       water line cm water line cm in rest cm

                          0.80         1.30        0.74          1.26         120.00        7.50           7.50                   0
                          0.37         1.55        0.21          0.47         92.00         7.00           11.00                  0



                       max                                                length waterline
                       wide on depht of       depth of       hight of     minimal    maximal           boat sailing       sail area
                                   hull
                       water line cm cm       boat cm        ballast cm   cm         cm                angle (derg.)      dm2


                           32          12           31            17           154           178             50                 97.8
                           15          3.5         21.4          2.45          43.6          45              50                 15.5
                           22           6          34.5           5            104           112             50                  69
                           19           5           42            2             83           96              50                  37
                          31.2         9.4          38           6.5           144           175             50                  97

                          26.5         10           50             4           120           128             50                  69
                           22          4            50             3           100           129             50                  97
longest water        longest water       volume              volume          botum of
line of out-rigger   line of center-hull outrigger           center-hull      the hulls         sail area
when sailing cm      when sailing cm Litres                  Litres          (cat=180degr)      dm2
                                         calculated          calculated
      120.00                120.00             6.72               6.72            165.00                70.2


                                        calculated           calculated
                                                      6.72            6.72




depth of             total              total
second or            hight              hight                shortest        longest water      longest water
center-hull          of outrigger       center-hull          water line in   line of out-rigger line of center-hull
in rest cm           in rest cm         in rest cm           rest cm         when sailing cm when sailing cm

         6                   14                14               103.00            120.00              120.00
         6                   8                 13                0.90             101.00              109.00




distance             hight of the
boom-water cm        main sail cm       wind force           sw
                                                             balast

        24                  199                3                   13               10
        8                    58                3                   14               4.5
       19.5                 151                3                   14                5
        11                  119                3                   14                6
        28                  150                3                   14               15

        47                  206                5                   14                5
        22                  158                3                   14               7.2
height
 top boom-   main       wind           outrigger
water        sail       force          vrijboord
cm           cm         beauford

    21.5        151           3            14
                                       *




                                       distance    height
volume       volume      botum of                   top boom- main    wind       outrigger
outrigger    center-hull the hulls     sail area   water      sail    force      vrij
Litres       Litres      (cat=180degr) dm2         cm         cm      beauford   board

    6.72        6.72        165.00         70.2      21.5       151       3          8
    3.20        8.30        160.00          50        13        164       3          8

				
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posted:10/6/2011
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