Jack, Thanks for the great link. Based on Ewen Thomson's study I should increase Calypso's mast to keel bolt conductors to larger than #4 and keep her in salt water, in the PNW and not Florida or Costa Rica.
Martin Calypso 1971 C&C 43 Seattle ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Jack Brennan Sent: Wednesday, August 29, 2012 4:31 PM To: [email protected] Subject: Re: Stus-List Lightning on the hard Ewen Thomson is the acknowledged U.S. expert on lightning and sailboats. He used to be a professor at the University of Florida, where he studied lightning for a couple of decades and provided free advice on inexpensive systems for boats. http://edis.ifas.ufl.edu/sg071 Now he has gone capitalist and started a company that provides expensive lightning protection systems for megayachts. http://www.marinelightning.com/index.html From: Frederick G Street<mailto:[email protected]> Sent: Wednesday, August 29, 2012 5:31 PM To: [email protected]<mailto:[email protected]> ; [email protected]<mailto:[email protected]> Subject: Re: Stus-List Lightning on the hard It's rocket science: http://oai.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=ADP002181 Here's a "bootleg" copy of the ABYC standards for lightning protection: www.marinesurveyorschool.org/...files/Lightening%20<http://www.marinesurveyorschool.org/...files/Lightening%20>Protection.pdf Fred Street -- Minneapolis S/V Oceanis (1979 C&C Landfall 38) -- on the hard in Bayfield, WI :^( On Aug 29, 2012, at 4:25 PM, Wally Bryant wrote: Heck, there once was the 'cone of protection' emanating from the top of the mast to the water. Whatever happened to that? ________________________________ _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com [email protected]
_______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com [email protected]
