; (ii) any emission of an air pollutant resulting from the operation onboard a commercial vessel of a commercial vessel propulsion system, motor driven equipment, or incinerator; or (iii) any discharge into navigable waters of the United States from a commercial vessel when the commercial vessel is operating in a capacity other than as a means of transportation on water. (8) General Permit The term General Permit means the Final National Pollutant Discharge Elimination System Vessel General Permit for Discharges Incidental to the Normal Operation of a Vessel noticed in the Federal Register on April 12, 2013 (78 Fed. Reg. 21938). (9) Geographically limited area The term geographically limited area means an area— (A) with a physical limitation that prevents a commercial vessel from operating outside the area, such as the Great Lakes and Saint Lawrence River, as determined by the Secretary