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  #21  
Old 02-14-2013
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Re: my boat dances on a ball

Quote:
Originally Posted by eherlihy View Post
you can also tie a line (rolling hitch) to your anchor rode, and run it back to a winch. If she dances, crank on the winch till she stops (sounds like the inquisition ).
Bridling the anchor rode will work to head a yacht into waves in an anchorage where the waves and the wind are out of sync but if the yacht wants to sail off her furled headsail, bridling may allow her to fore reach, repeatedly sailing up to the side of her anchor and then falling off. This will work the anchor back and forth, weakening its set, and can be a real pain for other yachts sharing the anchorage. Some while ago we watched a fellow work himself a quarter mile down our river until we finally convinced him to set his storm jib backward, tacked to a stern cleat and free flying and sheeted forward, after which the yacht calmed down and laid quietly to her ground tackle An inexpensive riding sail is a simple, effective and wise investment.
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Last edited by svHyLyte; 02-14-2013 at 09:57 AM.
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  #22  
Old 02-14-2013
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Re: my boat dances on a ball

All very good advice given above. My own hole in the ocean tends to sail around its anchor or mooring as well. I don't have a riding sail (yet!) but have discovered that a small mushroom anchor off the stern with just enough scope to drag but not bury does a surprisingly good job a settling the boat down.

At anchor it doesn't bother me but I have had guests that get uncomfortable below with the motion which lead to the discovery of the mushroom anchor as a drag. Oddly enough my Catalina 310 is most jumpy in lighter wind, once it gets up over 10-15 knots it points into it (or slightly off) without sailing around much.
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  #23  
Old 02-14-2013
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Re: my boat dances on a ball

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Originally Posted by Silvio View Post
.... Oddly enough my Catalina 310 is most jumpy in lighter wind, once it gets up over 10-15 knots it points into it (or slightly off) without sailing around much.
The effect of your dodger as a riding sail finally comes into play.
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  #24  
Old 02-14-2013
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Re: my boat dances on a ball

Every boat I've ever had sailed back and forth at anchor to some extent, both power and sail. I believe it is because of the freeboard. I plan to try a riding sail of some kind this season. My little Hunter 23.5 sails at anchor quite a bit. Thanks for the ideas of how to make and set the riding sails guys.

Kevin
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Old 02-14-2013
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Re: my boat dances on a ball

Jeff H hit on having COE/CLR (center of effort/center of lateral resistance) moving forward with modern designs. My fractional rigged 30 fter. loves to "chafe at the bit" and have used to some
success in moderate conditions most of suggestions brought forth in posts above, most consistently successful with riding sail that is offset to toe rail.
Concern is the rare times, in extreme conditions...I believe that
reducing windage forward of the COE is the one best precaution
that can be taken to reduce extreme yawing and the most extreme
loads on your ground tackle. That means taking down the roller furled jib, (which for me at least, is very much counter intuitive
as once I had to deploy jib fast to claw off rocky shore when
motor quit.) ...IMHO
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Old 02-14-2013
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Re: my boat dances on a ball

this makes me glad the cruiser I am looking at is a Yawl. She starts walking, I can always put up the mizzen
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Re: my boat dances on a ball

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Originally Posted by mad_machine View Post
this makes me glad the cruiser I am looking at is a Yawl. She starts walking, I can always put up the mizzen
True, we've often seen ketches and yawls, esp, with mizzens up at anchor for that very reason.. however a flat riding sail will always be quieter, as it's not so prone to slatting as the wind flips from side to side compared with a 'shaped sail'.
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Re: my boat dances on a ball

I agree with Jeff_H for the source of the problem.

I have a lot of tools in my toolbox now. Thank you everyone!

The riding sail seems like the most effective solution, but there are some practicality issues on my boat. my bimini is HUGE, and we have the boat in a charter fleet ( this could be outside the capabilities of a CCC ).

Taking down the JIB is WAY more than I would ask/or want a charterer to attempt. additionally my Furlex is UNDER the deck.

Cocking the boat, either by cleat or winch seems the easiest.

Apparently, in the right wind, it scares the people in boats around it, she dances pretty quick!

again, thanks for the tools!
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Old 02-14-2013
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Re: my boat dances on a ball

There are more than 200 boats on mooring balls where I'm currently docked, and the ONLY boats that tend to swing all over the place are those with fin keels. Those with full keels stay in place, face directly into the wind, no problems.

When I had a Catalina 27 with a fin keel, at anchor it was swinging wildly with the wind. A small stay-sail measuring just over 3 X 4 feet attached to the back stay solved the problem completely. Even during very high winds, and wild changes in the tide the boat was steady.

Gary
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Re: my boat dances on a ball

Depending on wind and current.. Full keel boats can go either way. With light air and heavy current, you will find them facing the current.. and vice versa with light current and heavy air.

Fin keel, Cats, and centerboarders always seem to follow the air. Can make for a lot of fun in an anchorage of mixed keels
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