Doug,

Operative words..."only with a wind blowing"...it is most likely the rig singing to you.... so how do you stop it....it did on my boat when I was on a mooring...first I changed the rig tuning (shroud tension loosened off a little)....worked for a while but not completely....reset shroud tension and then took ordinary white tape and wrapped it around my 4 shrouds (6 to 8 wraps per shroud) approx. 8' feet from the deck...silence.

Probably not a UFO causing your rig singing...now you have to figure out how to stop the rig from resonating in the wind?

Rob Abbott
AZURA
C&C 32 - #277
Halifax, N.S.

On 2021-05-18 9:18 p.m., Doug Mountjoy via CnC-List wrote:
For the past couple of months I have had a harmonic noise that sounds like a UFO. It appears to be coming from the mast, but only with a wind blowing, light or otherwise. Being moored across the bay from Puget Sound Naval Shipyard first few  times I heard it, had me looking outside for UFOs. I don't think its wind in the rigging. It just started this year when I got back from my 5 month road trip to Florida.
Is Rebecca Leah punishing me for being gone so long?


Sent from my T-Mobile 4G LTE Device

Doug Mountjoy
Port Orchard YC
Port Orchard,  WA
Rebecca Leah
1988 LF39


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