No owner or master in charge of the engine room or machinery of any watercraft, and no person in charge of or employed in or about any dock shall spill, throw, pump or otherwise cause oil of any description to be or float upon the waters of the harbor. Floating oil is a nuisance, and may be abated at the cost of the person causing the spill, in accordance with the provisions of BMC Title 10. [Ord. 9515, 1985; Ord. 8655 § 2(L), 1978].