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Old 15-07-2008, 18:13   #10
BigCat
Commercial Vendor
 
Join Date: May 2007
Location: Seattle area
Boat: Building 65' catamaran
Posts: 765
18 knot is a higher than average wind

Quote:
Originally Posted by rickm505 View Post
A lot of wind? Hell, I don't even hit my max hull speed unless it's blowing in the low 20's. Where exactly do you sail that 18 knots is a lot of wind??
I don't mean it's a gale, I mean it is above average, and so you can't assume that your boat will average over a long time what it averages in 18 knots of wind. We are considering the question of average speeds on this thread-

Here for example is Lahaina, Hawaii, a fairly windy place, in mph:
LAHAINA-KAPALUA AP AWOS |PHJH|1996-2006| 14.4 15.1 14.9 16.7 15.7 16.9 17.1 16.8 15.8 15.1 14.2 14.6 | 15.6

The different wind speeds are monthly averages, 15.6 mph is 13.5 knots, which is the annual average for Lahaina. (I sailed across the Pacific, and it goes from zip at the equator to a pretty stiff blow sometimes in the trades, not counting gales, but the average isn't all that high.)

Here's an interesting link: http://www.gipsymoth.org/weatherpics...therimage1.gif
It shows the wind speeds encountered in a fall / winter crossing in the NE trades in the Atlantic. Even in November and December, it doesn't look like it averaged 18 knots.

Last edited by BigCat; 15-07-2008 at 18:20.
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