In this section the following words have the meanings indicated. “Commercial fish operation” means any activity for which a person is required to possess a tidal fish license under § 4–701 of the Natural Resources Article. “Commercial fish operation” includes any activity for which a person is required to be licensed as a seafood dealer under § 4–701 of the Natural Resources Article. “Commercial fishing vessel” means a vessel that is: owned or leased by a person possessing a tidal fish license under § 4–701 of the Natural Resources Article; and used in a commercial fish operation. “Commercial marina” means a marina that leases at least 20% of its slips to commercial fishing vessels. “Commercial marine repair facility” means a marine repair facility that derives at least 20% of its gross receipts from charges for the repair and maintenance of commercial fishing vessels. “Commercial waterfront property” means real property that: is adjacent to the tidal waters of the State; is used primarily for a commercial fish operation or as a commercial marina or commercial marine repair facility; and for the most recent 3–year period, has produced an average annual gross income of at least $1,000. “Commercial waterfront property” includes land that is adjacent to or under improvements used primarily for a commercial fish operation or as a commercial marina or commercial marine repair facility. The Mayor and City Council of Baltimore City or the governing body of a county or of a municipal corporation may grant, by law, a tax credit against the county or municipal corporation property tax imposed on commercial waterfront property. The Mayor and City Council of Baltimore City or the governing body of a county or of a municipal corporation may provide, by law, for: the amount and duration of the tax credit under this section; additional eligibility criteria for the tax credit under this section; regulations and procedures for the application and uniform processing of requests for the tax credit; and any other provision necessary to carry out the credit under this section.