RedactedNarrative: V1 was traveling westbound on the Imerial River approximately 1 mile West of the Imperial River boat ramp. The operator of V1 stated he was passing a motor vessel in the river. While passing, the operator of V1 observed a blue kayak, but did not observe a green kayak. V1 struck the green kayak bow to bow throwing the operator of the green kayak (V2)in to the water. The operator of V1 stated he struck V2 because he was not looking in that direction. The operator of V2 stated that V1 was trying to pass him, V1 did not see him and they struck bow to bow. V1 was almost on plane and was not paying attention. After the accident V1 turned around to provide assistance. Operator of V2 sustained minor cuts to both knees and a dislocated shoulder. he has been referred to an orthopedic specialist for the injury. Operator of V1 was cited violation of Nav. rule 5 resulting in an accident.;