It can be difficult to spot upcoming problems in standing rigging. I sailed on a boat that had had everything inspected with dye, checking for otherwise invisible faults. All seemed OK. We went transatlantic to Ireland, (three gales) and up the Irish coast (50 knot squall) to Scotland. The boat continued out to the Hebrides, back to Scotland, and then down to Man, the Scillies, and Royan on the French Atlantic coast. Off Arcachon one of the leeward lowers suddenly dropped to the deck in about a 12-knot wind. We set up a spare jib halyard and looked for a rigger after we docked. Metal fatigue? It pays to be ready for anything.