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Go Back   SailNet Community > General Interest > General Discussion (sailing related)
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  #21  
Old 07-21-2008
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I noticed that video always seems to flatten out the waves as well.
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  #22  
Old 07-21-2008
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Position yourself 20 to 30' back from an 8' wall, sit in a chair and see how far up a tree or power pole your line of site is.

Last edited by Stillraining; 07-21-2008 at 09:28 PM.
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Old 07-21-2008
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So how big do you suppose these waves are?
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Old 07-21-2008
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I'd estimate 12-15 feet.
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  #25  
Old 07-21-2008
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Me to... and Id put thease at about the same with a closer period..

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Old 07-22-2008
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Grab your kids Radio flyer then go find your nearest concrete Flood control channel ( I would suggest the LA river ) drop in and see what happens when you either hit the flats or try cut across the face, that should give you a good idea of how a 40' ketch will surf a 30' wave
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Old 07-22-2008
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Interesting video technique to try to figure wave size:

YouTube - Wave height comparison - Heceta Lighthouse, Oregon
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Old 07-22-2008
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Nice idea, but flawed. The waves would have to be at the same distance from the camera as the lighthouse was. Doesn't look like that is the case in the video.
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Old 07-22-2008
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Yeah, I know. It looks like he tried to stay about the same distance to be roughly accurate. I would be more concerned about the type than size of wave in some respects. A breaking wave doesn't have to be very big. When water is hitting the sides and top of your boat hard and fast, you can get in trouble easy. Steep waves can force one end or the other of your boat under.
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Old 07-22-2008
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Quote:
Originally Posted by Stillraining View Post
I agree, having been in what we thought were 18-20 foot seas last March (only to find out later from Coast Guard New Orleans that they were 28-30). Waves at the early part of the storm, even building at 20 feet almost block out the sun behind you, if you are down in the trough.
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