My 30' Hunter was struck while docked on Lake Michigan several years ago. The mast was grounded through the keel and damage was relatively minimal; the
radio antennae was burned off of the mast head, the
radio, depth sounder and knot meter were destroyed. Where one of the chain plates was bolted inside the cabin, a book that was on an adjoining shelf had a hole burned through the cover.
A few years prior i saw a boat that didn't fare as well. A sailboat was struck on a lake in Georgia. The lightning struck arced to the metal dock blowing a
line of holes through the hull at the waterline, sinking the boat.
I'm currently moored in So. Cal on the Pacific. I have removed the ground
line to the keel in salt water to avoid degradation of the disparate metals, but lightning is rare here.
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