• The IMDG Code is based on UN Model Regulations, and includes additional requirements for the maritime transport of dangerous goods.
• Dangerous goods being transported by vessel in international waters must be prepared according to IMDG Code.

The International Maritime Dangerous Goods (IMDG) Code was developed by the International Maritime Organization (IMO) to enhance and harmonize the safe carriage of dangerous goods in international waters. The IMO also developed the IMDG code to prevent pollution to the environment. The IMDG Code is based on the UN Model Regulations, but also includes additional requirements applicable to the maritime transport of dangerous goods (such as requirements for marine pollutants, freight container loading procedures, stowage and segregation, and other requirements applicable to shipboard safety and preservation of the marine environment) that are not covered by the UN Model Regulations.

While the Pipeline and Hazardous Materials Safety Administration (PHMSA) gives you the choice to use the Hazardous Materials Regulations (HMR) or IMDG Code for transportation in U.S. waters, dangerous goods being transported by vessel in international waters must be prepared according to the IMDG Code.