RedactedNarrative: Vessel 1 Operator operated 2 passengers as onboard observers while towing a single tube with 2 riders on Clara Lake. Operator had completed two loops around Clara Lake in a clockwise manor and was on the third loop at the time of the incident. Operator had completed a turn heading west, turning north, and finishing by heading east when the tube in tow and its passengers collided with a person, who was stationary on an inflatable chair to the east of a swim raft.