The owner of a traditional gaff-rigged yacht advised that the mast had been lost when sailing in wind of 15 to 20 knots. This was caused by the failure of a splice on the starboard forward shroud of main mast. On examination it was found that a copper wire lightning conductor, which had been routed down the shroud, had been touching the splice through the rope serving. This had resulted in corrosion of the galvanised wire.
A reminder of the care needed to avoid galvanic action between dissimilar metals. The Editor still remembers an incident on a vessel on which he was serving when the aluminium radar tower secured directly by steel bolts toppled over!