; or (bb) any other pollutant associated with the operation of a marine propulsion system, shipboard maneuvering system, habitability system, or installed major equipment, or from a protective, preservative, or absorptive application to the hull of a commercial vessel; (II) deck runoff, deck washdown, above the waterline hull cleaning effluent, aqueous film forming foam effluent, chain locker effluent, non-oily machinery wastewater, underwater ship husbandry effluent, welldeck effluent, or fish hold and fish hold cleaning effluent; or (III) any effluent from a properly functioning marine engine; or (ii) a discharge of a pollutant into navigable waters of the United States in connection with the testing, maintenance, or repair of a system, equipment, or engine described in subclause (I)(bb) or (III) of clause (i) whenever the commercial vessel is waterborne. (B) Exclusions The term discharge incidental to the normal operation of a commercial vessel does not include— (i) a discharge into navigable waters of the United States from a commercial vessel of— (I) ballast water; (II) rubbish, trash, garbage, incinerator ash, or other such material discharged overboard; (III) oil or a hazardous substance, as those terms are defined in section 311 of the Federal Water Pollution Control Act ( 33 U.S.C. 1321 ); or (IV) sewage, as defined in section 312(a)(6) of the Federal Water Pollution Control Act ( 33 U.S.C. 1322(a)(6) ); (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