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 Post subject: Use of Natural Ranges
PostPosted: Tue Jun 24, 2008 10:42 am 
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Location: Astoria, OR
Nice little summary with a couple quick animations to illustrate how ranging works, and its value when crossing tidal streams, etc.:
http://tinyurl.com/6qpneu

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Folbot Kodiak, Cooper, and Edisto; three hardshells; Mothership: Surf Scoter the Bartender; dinghy Little Blue Duck.


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PostPosted: Thu Jul 03, 2008 6:09 pm 
lord high faltbotmeister
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Location: Stone Mountain, Ga. U.S.A.
thanks for posting this Dave. This could be helpful for those caught out there.

Interesting, the illustrations put me in mind of what it must be like for a plane to land in a cross wind. i'm sure it is very similar.

Chris

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PostPosted: Sat Jul 05, 2008 1:23 pm 
Brotherhood of the Golden Paddle
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Location: Arlington, VA (i.e. Wash DC)
I didn't read the whole article, but from the illustrations and a quick skim, and speaking as a pilot, yes: that is pretty much the same theory. It is called "crab angle" when landing. It is also used when flying any course in a cross wind, actually. The old circular slide rules used by pilots-- the E6B, etc.-- have a trigonometric function built into them to determine how you need to adjust your heading to maintain a course in a crosswind (which includes quartering winds, by the way).

Knowing how to use one of those circular slide rules is a wonderful thing, while we're on the subject. A myriad of uses. I always wear a watch with one built in (Citizen, not Breitling 8) ), and use it often.

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Chris T.
~'91 Klepper A2 w/ BSD schooner rig.
'64 Klepper Passat/Tradewind and T12 restoration projects.
Non-folding: '84 Hobie 16; early '90s Old Town Canoe.
Previously owned '04 Pakboat Puffin II and '05 Swift.


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