RedactedNarrative: Operator was sailing in a sailing class. Operator lost control of the sailboat then capsized. Operator fell into the water. Operator attempted to get back onto the sailboat as instructed by the instructor. Operator's hand slipped when bracing to get onto the sailboat. Operator landed on the left side of his abdomen. Operator fell onto the starboard side gunnel of the sailboat. Operator was unable to swim and to attempt to get back onto the sailboat. The instructor of the sailing class was unable to retrieve the operator out of the water. The instructor put the operator onto a spin board and towed him into shore.