Subject: Re:: Re: [harryproa] Re:: Lucs Proa
From: "lucsimard@ymail.com [harryproa]"
Date: 5/1/2016, 1:06 AM
To: <harryproa@yahoogroups.com.au>
Reply-to:
harryproa@yahoogroups.com.au

 

Rick,

Thanks for the links!

I saw Beaufort scale before, what it does not give me is the distance between waves, I know it can vary a lot depending on swell and wind, etc. but the mathematical model need a number ...

 I figure that with a 15 m boat, if waves are close together, it would ride quite leveled supported by many wave crests.  But at some point, the wavelength will increase with wind force and just as the boat is at it's maximum pitch and velocity going down, the bow will hit the next wave and burry ... Rotation inertia and speed would make this worst. Also worst case would be Wave length close to boat length I guess ?

But my question is much simpler, does the simulation/calculations you use for the number you gave me consider all this ? (worst case boat length vs wave length, speed, etc ?) 
... understood that dynamic lift or wave pressure on top of the bow is not considered.

Wondering since I can predict but really never know when crossing the sea what I could be getting. Also can give me a good idea when to safely take the sea anchor out :-)

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Posted by: lucsimard@ymail.com
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