Liquefied Gas Carrier National Center of Expertise (LGC NCOE) - Carrier ALERTS, Policy, Regs

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Safety Alerts and Bulletins Specific to Liquefied Gas Carriers
USCG Marine Safety Alert 07-18 Subject: Ethylene vapors activate Carbon Monoxide alarm. Take action, retreat, and avoid harm!
Narrative: Safety Alert describes an incident where Port State Control Officers were alerted to Carbon Monoxide vapors on their four gas meters when truly the meter was detecting an Ethylene leak coming from a fractured weld. Click the above link to read more and see associated photo.

USCG Marine Safety Alert 05-17 Subject: Got Gas? In the Wrong Place?
Narrative: Safety Alert describes actions of crew members where, to prevent accumulation of gases, they rigged a hose from the outlet of the gas evacuation fan, across the GVU room to the sensor at the entrance exhaust duct. Click the above link to see photo.

USCG Marine Safety Alert 03-15 Subject: LIQUEFIED PETROLEUM GAS (LPG) Cargo and Hydrate Handling Risks
Narrative: Safety Alert describes details into an investigation of cargo handling procedures associated with manual draining of hydrates from the drain line on the outlet of re-liquefaction condensers directly contributed to a casualty. Click the above link to see photos.

Sector Houston-Galveston Marine Safety Alert 02-11 Subject: Butadiene Exposure Near Miss

Coast Guard Message - Subject Safety Alert - Cargo Compressor Room Entries During Port State Control Exams and Law Enforcement Boardings of Liquefied Petroleum Gas (LPG) Carriers

Narrative: This is a Sector Houston-Galveston Safety Alert: It details a near miss butadiene exposure incident during a port state control exam.

Click Here for all Coast Guard Safety Alerts listed on CG Homeport

LGCNCOE Field Notices

LGCNCOE Field Notice 01-2019 Subject: Advanced Liquefied Gas Ship Rider Program

LGCNCOE Field Notice 01-2014  Subject: PQS Task Deferment

LGCNCOE Field Notice 01-2012  Subject: MARVS and Certificate of Fitness



Policy Letters

CG-ENG Policy Letter 04-12  Alternate Pressure Relief Valve Settings on Vessels Carrying Liquefied Gases in Bulk in Independent Type B & Type C Tanks

CG-CVC Policy Letter 12-04  Guidelines for Compliance and Enforcement of the Emission Control Areas Established within the United States Jurisdiction as Designated in MARPOL ANNEX VI Regulation 14

CG-CVC ECA Job Aid  Job Aid for Compliance and Enforcement of the Emission Control Areas

G-543 Policy Letter 11-01   Guidelines for Coast Guard Evaluations of Compliance with The U.S. Environmental Protection Agency's (EPA) Vessel General Permit (VGP) for Discharges Incidental to the Normal Operation of Vessels

G-PCV Policy Letter 06-01   Guidance for the Enforcement of MARPOL Annex I During Port State Control Examinations

G-MOC Policy Letter 04-13 rev 1   Guidelines For The Inspection Of Oily Water Monitor And Separator Systems Revision 1; dated 24 Mar 2005

Navigation Circulars Inspections Circulars (NVIC)

NVIC 04-05  Port State Control Guidelines for the Enforcement of the ISM Code

NVIC 07-04, Change 1  Ballast Water Management for the Control of Aquatic Nuisance Species in the Waters of the United States.

NVIC 04-03, Change 3  Guidance for verification of vessel security plans on domestic vessels in accordance with the regulations mandated by the Maritime Transportation Security Act (MTSA) regulations and International Ship & Port Facility Security (ISPS) Code

NVIC 02-88  Inerting Requirements for Chemical Tankers and Gas Carriers.

NVIC 05-81  Literature Concerning Hazardous Cargoes.

NVIC 05-79  Inerting and Cleaning Procedures for Alkylene Oxide Containment and Systems.

Click Here  for a list of all NVICs.  

Additional Guidance

USCG Marine Safety Manual, Vol. II Materiel Inspection Section D, Chapter 6, Procedures Applicable to Foreign Tank Vessels 

Foreign Gas Carrier Exam (FGCE) Job Aid (840 Book)

MSIB 02-2019 Sector Houston-Galveston: Top 5 Common Deficiency Areas on Liquefied Gas Carriers

SIGTTO Procedure 2012  LNG Transfer Arms and Manifold Draining, Purging and Disconnection Procedure 

IMO BLG Circular 2011  Carriage Conditions and Special Requirements Assigned to MIXED C4 



Code of Federal Regulations

46 CFR 154 - Self Propelled Vessels Carrying Bulk Liquefied Gases

33 CFR Part 101 - Maritime Security: General

33 CFR Part 103 - Maritime Security: Area Maritime Security

33 CFR Part 104 - Maritime Security: Vessels

33 CFR Part 105 - Maritime Security: Facilities

33 CFR 151.1500 and 33 CFR 151.2000 (Subparts C and D) - Ballast Water Management for Control of Non-indigenous Species in Waters of the United States.

33 CFR 155 - Oil or Hazardous Material Pollution Prevention Regulations for Vessels

33 CFR 159 - Marine Sanitation Devices

Click here to search all Code of Federal regulations.


U.S. Code USC Title 46 - Shipping

46 United States Code, Section 3703 - Carriage of Liquid Bulk Dangerous Cargoes Regulations

46 United States Code, Section 3711-Evidence of Compliance by Foreign Vessels

46 United States Code, Section 701 – Port Security

Click here to search all 46 U.S. Code.