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Vessel Routing Measures

Published by Office for Coastal Management | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 02, 2026 at 11:47 PM | Dataset Last Updated: March 16, 2026 at 12:00 AM
These data show the boundaries for select vessel routing measures in U.S. waters. These measures are part of an international ships routing system established by the International Maritime Organization (IMO). Routing systems are predetermined routes and related measures that are recommended for use by, and may be made mandatory for, all ships, certain categories of ships or ships carrying certain cargoes when adopted and implemented in accordance with the guidelines and criteria developed by the IMO. These measures are designed to contribute to the safety of life at sea, safety and efficiency of navigation, and/or protection of the marine environment. See more at SOLAS Chapter V, Regulation 10, Paragraph 1.

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