Interesting Sailboats - Page 651 - SailNet Community
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post #6501 of 6763 Old 03-28-2014
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Re: Interesting Sailboats

Sap:
A boat's motion at anchor is a function of form stability primarily. The "tender" boat with low form stability will be more quiet at anchor while the boat with high initial stability "stiffness" will react to each passing ripple and wake. This is the same reason that initially tender boats are said to have the "best motion" at sea. Unfortunately it more fun to sail a boat that is initially stiff usually. Most people prefer to heel less.

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post #6502 of 6763 Old 03-28-2014
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Re: Interesting Sailboats

Thought behavior at anchor was more complicated. Issues of lateral plane, displacement, windage and locale of windage, "fineness" of bow, rocker,gyradius and other issues enter in to it. Simple things are sometimes most annoying like the slap of small waves on the underside of non immersed sections of the stern or the boat "hunting" and sailing at anchor especially when it jerks back and forth. Have found simple stuff like setting up two long snubbers or a steady sail can make all the difference. Would appreciate further expansion of issues at anchor from Bob's wealth of knowledge.

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post #6503 of 6763 Old 03-28-2014
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Re: Interesting Sailboats

Out:
I was addressing only the stability aspect. I watch boats sail back and forth on their rodes all the time. Sometimes I see boats that I don't expect to sail at anchor merrily tacking back and forth. But I have been able to isolate what makes a boat quiet that way. Certainly a riding sail works. I also used a "sentinal" weight running down my rode in a crowded harbor on a 70'er and it worked magic. Can't say I have this figured out yet. My buddie's big Boston Whaler has tons of windage aft and yet it tacks back and forth all day, quite quickly.

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post #6504 of 6763 Old 03-28-2014
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Re: Interesting Sailboats

Quote:
Originally Posted by bobperry View Post
Sap:
A boat's motion at anchor is a function of form stability primarily. The "tender" boat with low form stability will be more quiet at anchor while the boat with high initial stability "stiffness" will react to each passing ripple and wake. This is the same reason that initially tender boats are said to have the "best motion" at sea. Unfortunately it more fun to sail a boat that is initially stiff usually. Most people prefer to heel less.
Bob, presumably the way some boats seem to move around a lot more on their mooring in undisturbed water (our J/130 used to "sail" up over the anchor warp and meander all over the place) - is a function of displacement ?
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post #6505 of 6763 Old 03-28-2014
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Re: Interesting Sailboats

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Bob, presumably the way some boats seem to move around a lot more on their mooring in undisturbed water (our J/130 used to "sail" up over the anchor warp and meander all over the place) - is a function of displacement ?
i see you've answered this question in the earlier post
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post #6506 of 6763 Old 03-28-2014
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Re: Interesting Sailboats

It's fun to race a boat that can break out but for cruising I prefer displacement. The ride is softer, the weight of carrying gear doesn't harm performance as dramatically, and they seem to lie to an anchor or mooring more sedately.
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post #6507 of 6763 Old 03-28-2014
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Re: Interesting Sailboats

Sap:
I'm inclined to think it's more of a windage issue than displacement. But I don't know. Certainly having more weight in the boat has to slow things down a bit. Heavier boats are also often less initially stable so that would work in their favor also. But I think motion at anchor is not the same thing as a boat sailing back and forth on its rode.

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post #6508 of 6763 Old 03-29-2014
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Re: Interesting Sailboats

Interesting Sailboats-image.jpgCan anyone identify this 26' sailboat I have looked all over the net and can't identify its maker
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post #6509 of 6763 Old 03-29-2014
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Re: Interesting Sailboats

Help me identify this 26 sailboat
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post #6510 of 6763 Old 03-30-2014
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Re: Interesting Sailboats

Randy:
My guess is that the boat is home built.

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