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Issuance of Marine Safety Center Technical Note (MTN) 01-25: Guidance for Submitting Design Risk Assessments of Liquified Natural Gas (LNG) Fueled Vessels

Nov. 13, 2025

To enhance service delivery in response to requests from maritime industry partners, on September 26, 2025 the Marine Safety Center (MSC) issued guidance on preparing and submitting risk assessments for LNG-fueled vessels. These assessments identify necessary ship-specific risk mitigations and are required to comply with the IGF Code (International Code of Safety for Ships Using Gases or Other Low-Flashpoint Fuels).

MTN 01-25 includes:

  • Guidance on avoiding common issues MSC finds when conducting reviews
  • Relevant interpretations of specific provisions of the Code
  • Explanation of Coast Guard documentation for approved mitigations

This document reduces the burden on the U.S. merchant fleet in adopting LNG as fuel, while reinforcing the Coast Guard’s commitment to modernizing and streamlining policies. Questions concerning this blog post should be directed to msc@uscg.mil.

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U.S. Coast Guard LNG

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This blog is not a replacement or substitute for the formal posting of regulations and updates or existing processes for receiving formal feedback of the same. Links provided on this blog will direct the reader to official publications, such as the Federal Register, Homeport and the Code of Federal Regulations. These publications remain the official source for regulatory information published by the Coast Guard.