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 Post subject: Use of Natural Ranges
PostPosted: Tue Jun 24, 2008 10:42 am 
Site Admin
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Joined: Sat Apr 16, 2005 9:02 pm
Posts: 1035
Location: Astoria, OR
Nice little summary with a couple quick animations to illustrate how ranging works, and its value when crossing tidal streams, etc.:

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

PostPosted: Thu Jul 03, 2008 6:09 pm 
lord high faltbotmeister
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Joined: Sat Mar 24, 2007 6:30 pm
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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.


"No matter where you go, there you are."

Wilderness Systems Cape Horn 150

PostPosted: Sat Jul 05, 2008 1:23 pm 
Brotherhood of the Golden Paddle
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Joined: Thu Apr 14, 2005 4:47 pm
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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.

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

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