What’s that noise

[PConti2025]

I have a 15 foot Spindrift Rascal. Today was my last sail of the season. When I am sailing close hauled in 10 mph wind I hear a humming sound while boat travel through the water. What is that humming sound coming from

 

[captbob47]

I am not familiar with the boat but if it has a cable controlled centerboard that would be where the vibration can come from.

 

[dlochner]

Probably the centerboard vibrating.