 One commissioner each is appointed by the city councils of Chula Vista, Coronado, Imperial Beach and National City, and three commissioners are appointed by the San Diego City Council.The Board establishes policies under which the Port's staff – supervised by the Executive Director – conducts its daily operation.The San Diego Unified Port District was created in 1962 after the California State legislature passed Senate Bill 41 and the San Diego County Board of Supervisors certified it.