I lost a shroud - it parted just inside the fitting at the base. It was clear that the aircraft fitting had retained some moisture there and even though the boat was rinsed after each regatta, there was corrosion going on where I couldn't easily see it. Mast came down in slo-mo on the way out the inlet at the Clearwater Sailing Center with a rushing incoming tide. I though I was hot snot for getting under the bridge in one tack without missing a step... kicked a field goal on the drifting boat back through the bridge and caught a reluctant fishing boat for the short tow back. Missed the whole regatta. My standing rigging was about three years old at the time.