On large masts the mainsail track is mechanically fastened to an aluminum backing plate .
your xyacht will most likely have a Nordic carbon spar
these tracks are only epoxied to the mast…no fasteners, no backing plate….this would be a poor down conductor
Xyachts builds to customer...
They use ultra sound to survey carbon masts, structures
when the resin fails, or disbonds , the ultrasound senses this change in density of the laminate
these tools are used by specialist surveyors
I see this company on many carbon surveys
I’m not a lightning specialist
I simply work on many boats and can observe “ best practice “
if you are in a region with many lightning strikes you should contact the insurance companies or a local surveyor to find out what works locally
evidently boats in fresh water are very difficult to...
From a naval architect ….
“ Being an enthusiast of carbon fiber masts, I collect stories of lightning strikes on them. I have seen carbon masts turn to toast, and I have seen them survive. Those that get toasted are the ones with no lightning ground wire inside the mast. The easiest path for...
With lightning you just never know
your only choice is to use best practice and hope for the best
Many boats use brushes , many use lightning rods
what is certain is that you don’t want the lightning energy to flow down the carbon epoxy mast
Every carbon mast I have worked with had a lightning conductor ,, copper cable down the mast or the aluminum mainsail track used as a down conductor
this conductor ends at a keel bolt
at the mast head is a lighting rod
does this system work ? This is the Million dollar question