means navigable to the extent necessary to meet the reasonable demands of commerce, minimize delays to passenger ferries, extricate vessels and persons from danger, prevent damage due to flooding, and conduct other Coast Guard missions as required. (5) Reasonable demands of commerce The term reasonable demands of commerce means the safe movement of commercial vessels transiting ice-covered waterways in the Great Lakes at a speed of 3 knots or greater. . (b) Clerical amendment The table of analysis for such chapter is amended by adding at the end the following: 564. Great Lakes icebreaking operations. . (c) Report Not later than the first July 1 after the first winter in which the Commandant of the Coast Guard is subject to the requirements of section 564 of title 14, United States Code, such Commandant shall submit to the Committee on Transportation and Infrastructure of the House and the Committee on Commerce, Science, and Transportation of the Senate, a report on the cost to the Coast Guard of meeting the requirements of such section.