> I don't remember what his speed
> estimate was but he reported an eerie "tone" being generated, by the CB
> trunk apparently, something he had not heard at usual sailing speeds.
When I'm really planing fast in my Force 5 dinghy (in winds of 20-25 on San
Francisco Bay), the centerboard always hums, shrieks and moans. It's a common
event in dinghies and small boats. Lasers do it, Force 5's do it, Capri
14.2's do it....
Judith Blumhorst, DC
WWP-19 #266 "Redwing"
Danville, CA