RedactedNarrative: THE OPERATOR WAS IN THE PROCESS OF TAKING DOWN THE SAIL.  DUE TO THE WIND AND VERY HEAVY VESSEL TRAFFIC, THE SEAS IN THE AREA WERE APPROXIMATELY 2-3 FEET AT TIMES.  WHILE TAKING DOWN THE MAIN SAIL, THE BOOM SHIFTED AND STRUCK THE OPERATOR IN THE HEAD, LACERATING HIS HEAD.