Subject: Re: [harryproa] Atlantic vs HarryProa... and structural.
From: Mike Crawford
Date: 8/3/2010, 11:56 AM
To: harryproa@yahoogroups.com.au
Reply-to:
harryproa@yahoogroups.com.au

 


  I believe it would work the way you diagram it.

  However, the bows are traditionally foam-filled semi-nonstructural parts of a Harryproa, while the beams are about the strongest things on the boat.

  If you're anchored in a big blow, or perhaps working with drogues or a sea anchor, you'll probably want your anchor rhode connected to something bombproof.  The beams work for that, and also allow you to run your lines downwind from the cockpit (easier to see and work with, out of the way of curvy bits).  You might also be more likely to have an anchor storage box along the beams instead of at the end of the boat, both for convenience and weight distribution reasons.

  On the Atlantic version, you'd need to beef up your bows to handle dynamic anchoring loads, and also come up with a scheme to run lines through or around the hull.  It's not the end of the world, but it might be heavier and/or less convenient.

        - Mike
 

On 8/3/2010 11:29 AM, Dennis Cox wrote:

 
Sorry Doug, maybe it took a baseball bat to get it through a second time. 
 
I am starting to fall on the HarryProa placment anyway... but playing devil's advocate for a moment... and to see if I have all your points.  I think I am hearing... 
 
In an Atlantic configuration, when on anchor, the windward hull would definitely be down wind and in the wrong place both from the righting moment and comfort in the cockpit.  I got that.  However, if I moved the anchor to the bows of the windward hulls instead of the beams as Rob has it, it would tend to keep the bows pointed into the wind.  Any slight angle from that, I'd think it would be the lee hull, staying lee.  Raising anchor and loading up the sails shouldn't cause much orientation change.  I would think it would stay relatively neutral.  Any attempt at yawing, I think could be easily compensated by the schooner rig balancing.
 
Something like this????
Am I still missing something else?
 
Thanks,
Dennis

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