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g0twind 06-13-2011 08:02 AM

Rig vibration during sail and at dock?
While out sailing in a slight breeze (10 knots or so) I noticed a vibration on the boat. The mainsail did not have it battens in and the leach was blowing around a bit. Could this be causing the boat to vibrate?

Then, while sitting down below at the dock the next day, i noticed a slightly different vibration. I went up on deck and could feel the mast vibrating when the wind blew. Is this normal?

This is the first year we have spent much time just hanging out at the dock, which is why I probably never noticed the vibration before....

peterconway 06-13-2011 08:12 AM

what do sailboats and guitars have in common? they both have tight strings (shrouds), necks (mast) and acoustic chambers(hulls). add a little wind to activate the strings and music is made.

MJBrown 06-13-2011 09:35 AM

Don't forget the topping lift. Too tight and it will sing.

Faster 06-13-2011 10:01 AM

Quite normal... some boats make more noise than others, some rigs will rattle quite a bit in a crosswind.

We chartered a C&C 38 one time, had a good sail and then moored for the night. We spent a half hour trying to find the pump we could hear running below only to figure out in the end it was rig vibration.

Boasun 06-13-2011 10:17 AM

In port you will with a elipical mast with spreaders have various wind eddies along that mast and it will set up a vibration. Some harmonic and some not.
Move your halyards away from the mast, one way or another to stop them banging against the mast. It is very very annoying to have to listen to those halyards banging because some people can't, won't or ignorant of the practice of 'Good Neighbor Policies'.

g0twind 06-13-2011 12:38 PM

The topping lift is pretty tight now that I think about it. I will loosen it a bit while at the dock.

I need to get some battens into the main to make sure the vibration while sailing goes away.

I always tie my halyards away from the mast, so not to bother all the "other" boaters....

Barquito 06-13-2011 01:15 PM

I was also suprised by the noise passing motor boats make.

peterconway 06-13-2011 03:08 PM

i like to weave an old bungee cord thru the rigging while docked to muffle the vibs and clangs

Frogwatch 06-13-2011 03:50 PM

You'll know when you've been aboard for a long time when somebody points out the noise you no longer notice.

WDS123 06-13-2011 10:24 PM

Rig tension ?

Rudder bearing ?

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