Category: Design & Engineering Standards

May 13, 2024

CG-ENG Policy Letter for Ship-to-Ship Transfer of Hazardous Materials Other Than Oil

On 7 May 2024, the U.S. Coast Guard Office of Design and Engineering Standards (CG-ENG) published Policy Letter 02-24, Guidance on Commandant Approval of Lightering and Ship to Ship Transfer Operations Involving Hazardous Materials Other Than Oil.

April 22, 2024

Announcement: CG-ENG Policy Letter 01-24: Guidance Regarding Devices that Alter Maneuvering Characteristics of Ships

The U.S. Coast Guard Office of Design and Engineering Standards issued a new Policy Letter outlining guidance for when devices such as Engine Power Limiters (EPLs) and Shaft Power Limiters (SHaPoLis) should be engaged and disengaged in U.S. waters.

March 18, 2024

Announcement: Clarification on Interconnected Fire Systems Onboard Covered Small Passenger Vessels

The Coast Guard published an interim rule on December 27, 2021, to implement Congressionally-mandated requirements for fire safety on “covered small passenger vessels” (CSPVs), as defined by 46 U.S.C. 3306(n). Congress adopted the statutory mandate in response to the fire and loss of 34 lives onboard the dive boat CONCEPTION off the California coast on 02 September 2019.  The USCG has identified a need to clarify the reference in 46 CFR 175.110(c) with respect to fire detection systems. 

Feb. 1, 2024

Announcement: The Office of Design and Engineering Standards (CG-ENG) approves first synthetic fluorine-free foam concentrate (PFAS-free) to pass NFPA 11, Annex F Test Method

The Office of Design and Engineering Standards (CG-ENG) has approved the first synthetic fluorine-free foam concentrate (PFAS-free) to pass the NFPA 11, Annex F Test Method. Hiller Systems has received USCG approval to use their “Hiller Haven Green” synthetic fluorine-free foam concentrate, also known as “Solberg Re-Healing 3x3% SP-100 AR-SFFF Alcohol Resistant Synthetic Fluorine Free Foam Concentrate” with their USCG Certificate of Approval (COA) 162.033/47. This COA can be viewed on CGMIX at https://cgmix.uscg.mil/Default.aspx.

Jan. 2, 2024


The National Chemical Transportation Safety Advisory Committee (NCTSAC) was created in 2018, continuing the work of the legacy Chemical Transportation Advisory Committee (CTAC), in existence since 1949.

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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.