Originally Posted by SHNOOL
I got a follow-up question to all you folks in the know... I have a deck stepped mast, on a trailerable boat. I am not an electrical newb, having an EE background, but mathmatically speaking "cone" notwithstanding, I don't think it'd be pleasant to be on a boat struck by lightning grounded, but ungrounded as is the case on my boat, particularly unpleasant (thinking holing the boat to get to the keel for grounding).
Ungrounded or not There is no real proof either way as to safety.
A lighting bolt with several million volts does not act the same as 12 dc.
What there is proof of is the Faraday Cage Principle.
You are unlikely to get physical hurt sitting down inside a FG boat especially with an alum mast. But Lightening strikes are each unique and unpredictable.