Regulations last checked for updates: Dec 16, 2025

Title 33 - Navigation and Navigable Waters last revised: Dec 08, 2025
authority: 14 U.S.C. 102,33.S.C. 1201-1208; Pub. L. 107-295, 116 Stat. 2064; DHS Delegation No. 00170.1, Revision No. 01.4. Rule 1, International Regulations for the Prevention of Collisions at Sea
source: CGD 71-114R, 37 FR 12720, June 28, 1972, unless otherwise noted.