This Act is enacted to implement the provisions of International Convention for the Prevention of Pollution from Ships, 1973 and the Annexes to which the Unites States is a party. The Act applies to all U.S. flagged ships all across the globe and to all foreign-flagged vessels operating in navigable waters of the United States or while at port under U.S. jurisdiction. Ships shall also comply with Annex IV of the Protocol on Environmental Protection to the Antarctic Treaty. The Secretary of the d