The Coast Guard proposes certain additions, changes, and amendments to 33 CFR subchapter H. Subchapter H is comprised of parts 101 through 106. Subchapter H implements the major provisions of the Maritime Transportation Security Act of 2002 (MTSA). This rulemaking is the first major revision to subchapter H. The proposed changes would further the goals of domestic compliance and international cooperation by incorporating requirements from legislation implemented since the original publication of these regulations, such as the Security and Accountability for Every (SAFE) Port Act of 2006, and including international standards such as Standards of Training, Certification & Watchkeeping security training. This rulemaking has international interest because of the close relationship between subchapter H and the International Ship and Port Security Code (ISPS).