Re: Lighting strike vs insurance [Amel Yacht Owners] Maramu - Main Mast Grounding / Bonding
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there is not any good system to prevent the damages of a lightning strike. Even if the lightning strikes 100 m away form your vessel, the electronics could all be damaged through the electromagnetic field generated. This is including alternators, battery chargers, washing machines, etc...
The purpose of the bonding system installed in the AMEL boats is to fight galvanic corrosion and/or detect a power leak able to create electrolytic corrosion. The main reason is that the wires used in this circuit are too small to stand any high power strike.
However there may be a way to "comply" with the insurers wish, and in order to show that you made the best you could to "drive" the lightning power to water. You should be be able to show your insurers (or the claim surveyor they commit) that you had such an equipment on board.
The equipment is a pair of copper cables, or stainless steel cables (standing rigging) 3m long each, with the same diameter as your top shrouds (12mm) or bigger, that you attach to the top shrouds on both sides thanks to a stainless steel cable clip when a thunderstorm comes or when you leave your vessel unattended in a marina (especially in the intertropical belt/convergence zone).
In order not to damage your hull, you will have these cables installed in rubber sleeves ( such as a water hose).
Again, this will definitely not protect the vessel against lightning strikes and consequences, but you'll be able to show something to your insurers.
On Monday, October 7, 2019, 02:24:21 PM GMT+2, Matt Salatino via Groups.Io <helmsmatt@...> wrote:
The only way to prevent lightning damage to electronics is to be far away from a strike. You need to find a carrier that covers electronics. It’s a pricey fix! Ask Pantaenius again to rewrite your coverage to include electronics in case if lightning strike.
On Oct 7, 2019, at 4:41 AM, Jeroen jeltes <j.jeltes@...> wrote: