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Old 14th March 2012, 12:22 PM   #3
Roger
Dream Team - School Guru
 
Join Date: Aug 2006
Posts: 2,109
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Hi costap,
The UltraSonic 147 will get a lightweght planing in 8-9 knots with a good 9.5 m2 free race sail (more draft than a race sail for low wind power).
Below a fairly steady 8 knots, even at your light weight, you will not plane, so the only choices are some sort of longboard or the Serenity for smiply cruising around.
Hope this helps,
Roger
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