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Old 13-02-2016, 23:21   #16
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Re: Sailboat Lightning Strike Caught On Camera

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Originally Posted by roland stockham View Post
Interesting to note the absence of any strike path. No sign of the descending strike or anything flowing down the rigging into the water. No shutter speed is fast enough to 'freeze' lightening so not that. Possibly what we are seeing is the top of the mast burning? Everyone thinks of electronic but would you want to press hard to wind on that mast now?
Hmm… in the OPs linked video, the "white" lightning "arc" is clearly visible hitting the top of the mast which is quickly followed by the yellow "flame" and puff of black stuff. All happens at about 15 - 16 second mark.

My take is the current flowing in the ionised air (white arc) dissipated down the mast at the same time as "blowing up" some masthead equipment.
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Old 14-02-2016, 08:34   #17
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Re: Sailboat Lightning Strike Caught On Camera

Quote:
Originally Posted by roland stockham View Post
Interesting to note the absence of any strike path. No sign of the descending strike or anything flowing down the rigging into the water. No shutter speed is fast enough to 'freeze' lightening so not that. Possibly what we are seeing is the top of the mast burning? Everyone thinks of electronic but would you want to press hard to wind on that mast now?
I believe that when you see the photos showing the descending strike of the lightning bolt, it's actually a slower exposure, not a faster shutter speed. Those photographs, usually from cameras set up on a tripod, use slow enough shutter speeds to capture the longer exposure necessary to capture the bolt. (I'm not an expert on this, but I was told this from a photography pro)
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Old 14-02-2016, 09:16   #18
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Re: Sailboat Lightning Strike Caught On Camera

Extraordinary video. I hope they are all OK. I doubt the boat is unharmed.

To see more of what went on I froze a couple of frames. You can clearly see the plasma trail of the bolt and the explosion followed half a second later with black smoke of probably a carbonized bit of plastic up there - antenna parts maybe.

I didn't see an ascending trail at any point.

Edit: I see the second picture is the same as from the original posting. Nothing new in it.
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Old 14-02-2016, 16:21   #19
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Re: Sailboat Lightning Strike Caught On Camera

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Originally Posted by poiu View Post
Extraordinary video. I hope they are all OK. I doubt the boat is unharmed.

To see more of what went on I froze a couple of frames. You can clearly see the plasma trail of the bolt and the explosion followed half a second later with black smoke of probably a carbonized bit of plastic up there - antenna parts maybe.

I didn't see an ascending trail at any point.

Edit: I see the second picture is the same as from the original posting. Nothing new in it.
Thanks, Poiu,

An excellent addition, and very informative.

Cheers!

Bill
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Old 14-02-2016, 21:07   #20
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Re: Sailboat Lightning Strike Caught On Camera

Here is a photo that was posted in this same thread on another forum...

I'm dubbing it "...And the winner is..."

Cheers!

Bill

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Old 15-02-2016, 02:50   #21
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Re: Sailboat Lightning Strike Caught On Camera

Probably just a bird deterrent. I've often thought about rigging something like that.

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