Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
When laying at anchor overnite, and some wind going, I notice that there is a deep and annoying humming sound, ebbing and increasing with the wind. I guess it comes from the mast which possibly vibrates and imparts this vibration to the hull - it's like sitting in a bass drum.
Did anyone else experience this situation? And, would there be a remedy?
When laying at anchor overnite, and some wind going, I notice that there is a deep and annoying humming sound, ebbing and increasing with the wind. I guess it comes from the mast which possibly vibrates and imparts this vibration to the hull - it's like sitting in a bass drum.
Did anyone else experience this situation? And, would there be a remedy?
2002 C250 WK
Could be the backstay or upper shrouds vibrating in the wind, just like a violin string when excited by a bow. Next time it happens, go topsides and grab them to see if the sound stops. If so, you know the source. Not sure what you could do to stop it, though.
Rick S., Swarthmore, PA PO of Take Five, 1998 Catalina 250WK #348 (relocated to Baltimore's Inner Harbor) New owner of 2001 Catalina 34MkII #1535 Breakin' Away (at Rock Hall Landing Marina)
I'd suggest stretching a bungee taut between the shrouds. That hum usually only happens at a certain windspeed, which causes the shrouds to vibrate harmonically. If you change their tension temporarily, by attaching a bungee, the hum might go away.
Steve Milby J/24 "Captiva Wind" previously C&C 35, Cal 25, C25 TR/FK, C22 Past Commodore
Usually the shroud problem results in high-pitched, almost whistling sounds. The low-pitch is probably a harmonic vibration of the mast itself. A fix I've heard about is wrapping a halyard a few times around the mast in a spiral from the spreaders down. The theory is that will create some turbulence as the wind passes the mast, disturbing whatever harmonic is trying to develop. (Hopefully it doesn't allow halyard-slapping above the spreaders.)
Dave Bristle Association "Port Captain" for Mystic/Stonington CT PO of 1985 C-25 SR/FK #5032 Passage, USCG "sixpack" (expired), Now on Eastern 27 $+!nkp*+ Sarge
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.