RedactedNarrative: V1 was traveling south bound in Indian River with sail up as primary power. A strong wind and rain came from the east and blew. The wind caught the sail and listed the vessel over until the hit the water causing the vessel to roll over. The operator was the only person on board. He grabbed a type four throw device and jumped from the vessel. The operator treaded water beside the vessel for close to an hour before good samaritans picked him up.