Very roughly, the payload is 1, 2 and 3 tonnes for the 40, 50 and 60. More payload in each case is not a problem, if it is placed in the lee hull. The boat will be a little slower, but no other effects.
A little more specifically, it is related to the length of the ww hull. Rough numbers. The waterline beam of the hull should be 1/11th of the length and the draft 30% of the beam. The prismatic is about 0.75. So an 8m/27' hull will be 0.73 m wide and 0.22 m deep. The volume will be 0.75 x 8 x .73 x .22 = 960 kgs/2,100 lbs . About 200 kgs of this will be structure . So to get the 1 ton payload in a 40 footer, the ww hull would be a little longer than 8m. Roughly. On Thu, Aug 13, 2015 at 4:06 AM, lucjdekeyser@telenet.be [harryproa] <harryproa@yahoogroups.com.au> wrote:
Another important parameter is weight. At present it is quite confusing to compare boats as their weights as published cover different definitions. In addition, these numbers are often underestimated for marketing reasons. Furthermore, most boats are sailed loaded over the intended target.What would be the target ballpark figures for "full load" displacement and useful load for a HP 60, 50, 40 ? Of course the difference will depend on the presence of household infrastructure like microwave and all...
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Posted by: Rob Denney <harryproa@gmail.com>
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