Dana S. Merkel, Vanessa C. DiDomenico, and Holli B. Packer ●



The U.S. Coast Guard (“USCG”) published a final rule on January 17, 2025, addressing Cybersecurity in the Marine Transportation System (the “Final Rule”), which seeks to minimize cybersecurity related transportation security incidents (“TSIs”) within the maritime transportation system (“MTS”) by establishing requirements to enhance the detection, response, and recovery from cybersecurity risks. Effective July 16, 2025, the Final Rule will apply to U.S.-flagged vessels, as well as Outer Continental Shelf and onshore facilities subject to the Maritime Transportation Security Act of 2002 (“MTSA”). The USCG is also seeking comments on a potential two-to-five-year delay of implementation for U.S.-flagged vessels. Comments are due March 18, 2025.
Background
The need for enhanced cybersecurity protocols within the MTS has long been recognized. MTSA laid the groundwork for addressing various security threats in 2002 and provided the USCG with broad authority to take action and set requirements to prevent TSIs. MTSA was amended in 2018 to make clear that cybersecurity related risks that may cause TSIs fall squarely within MTSA and USCG authority.
Over the years, the USCG, as well as the International Maritime Organization, have dedicated resources and published guidelines related to addressing the growing cybersecurity threats arising as technology is integrated more and more into all aspects of the MTS. The USCG expanded its efforts to address cybersecurity threats throughout the MTS in its latest rulemaking, publishing the original Notice of Proposed Rulemaking (“NPRM”) on February 22, 2024. The NPRM received significant public feedback, leading to the development of the Final Rule.
Final Rule
In its Final Rule, the USCG addresses the many comments received on the NPRM and sets forth minimum cybersecurity requirements for U.S.-flagged vessels and applicable facilities.
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