Navigation Rules (International-Inland) (U.S Coast Guard Commandant Instruction M16672.2D, pdf, 1.29 MB) is a compendium of: the International Regulations for Preventing Collisions at Sea, 1972 (72 COLREGS), 33 U.S.C. 1601-1608, the Inland Navigation Rules, 33 U.S.C. 2001-2038, their respective technical annexes, 33 CFR 84-90, a listing of the COLREGS Demarcation Lines, 33 CFR 80, the Vessel Bridge-to-Bridge Radiotelephone Regulations, 33 CFR 26, and, various other legal provisions regarding compliance and penalties associated with the Navigation Rules; published on March 25th, 1999 by the U.S. Coast Guard Navigation Standards Branch at Coast Guard Headquarters, Washington, DC 20593-7856. Contact us...

Corrected Version

• Navigation Rules (International - Inland) (.pdf, 651Kb), this is a corrected version of COMDTINST M16672.2D and includes post-publication amendments to the International Regulations for Preventing Collisions at Sea (COLREGS). Read more...

By Section:

• Part A-E (.pdf, 577 KB) - Subpart I-III
  • Rules 1 to 38
• Part A/B (.pdf, 132 KB) (pg i-25) - Section / Subpart I
  • General
  • Conduct of Vessels in Any Condition of Visibility - Rules 1-10
    
• Part B (.pdf, 28 KB) (pg 26-37) - Section / Subpart II-III
  • Conduct of Vessels in Sight of One Another - Rules 11-18
  • Conduct of Vessels in Restricted Visibility - Rule 19
    
• Part C (.pdf, 359 KB) (pg 38-113) Lights and Shapes - Rules 20-31
  
• Part D & E (.pdf, 62 KB) (pg 114-131) Sound and Light Signals / Exemptions - Rules 32-38
  
• Annexes I-V (.pdf, 105 KB) (pg 132-173)
  • Positioning and Technical Details of Lights and Shapes
  • Additional Signals for Fishing Vessels Fishing in Close Proximity
  • Technical Details of Sound Appliances
  • Distress Signals
  • Pilot Rules
    
• Miscellaneous (.pdf, 127 KB) (pg 174-215)
  • Interpretive Rules
  • COLREGS Demarcation Lines
  • Penalties Provisions
  • Alternative Compliance - International / Inland
  • Waters Specified by the Secretary
  • Vessel Bridge-to-Bridge Radiotelephone Regulations
  • Vessel Traffic Services (VTS) call signs, designated frequencies, and monitoring areas.
• Errata Pages (.pdf, 339 Kb), read more...
  

Printed Version:

• Printed versions of COMDTINST M16672D (NSN 7642-01-448-2151, 050-012-00407-2) are available at U.S. Government Bookstores or at http://bookstore.gpo.gov , Tel: 202-512-1800. Note, there are various other commercial facsimiles of COMDTINST M16672D; the Coast Guard does not endorse, approve or verify the veracity of these versions. Use of Coast Guard indicia, without our prior approval, is a violation of U.S. law and subject to civil penalties.