All of us who sail have, at one time or another, experienced foils that, at speed, hum or sing. I never had a singing foil that affected my day out pleasure boating. But VOR leaders Ericsson 4 have a rudder that day in, day out, 24/7, just shrieked.
Would this be equivalent of hearing nails on a blackboard 24/7?
Dayboats
1 day ago
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