Direct reduced iron (DRI) in various forms is described in the International Maritime Sold Bulk Cargo (IMSBC) Code, (hereinafter, the Code). The latest addition, which becomes a mandatory part of the Code from January 2025, is the entry for the Type D, by-product fines with a moisture content of at least 2%. This entry runs over multiple pages and contains large amount of important information and guidance. In this Circular, the main points of the Type D entry are summarised, and, where appropriate, additional guidance and observational notes have been added.