Chapter I — Coast Guard, Department of Homeland Security
- Subch. A Procedures Applicable to the Public §§1.01-05 to 9.17
- Subch. B Merchant Marine Officers and Seamen §§10.101 to 16.500
- Subch. C Uninspected Vessels §§24.01-1 to 28.1115
- Subch. D Tank Vessels §§30.01-1 to 39.6009
- Subch. E Load Lines §§42.01-1 to 47.640
- Subch. F Marine Engineering §§50.01-10 to 64.97
- Subch. G Documentation and Measurement of Vessels §§67.1 to 69.211
- Subch. H Passenger Vessels §§70.01-1 to 80.40
- Subch. I Cargo and Miscellaneous Vessels §§90.01-1 to 106.125
- Subch. I-A Mobile Offshore Drilling Units §§107.01 to 109.585
- Subch. J Electrical Engineering §§110.01-1 to 113.65-5
- Subch. K Small Passenger Vessels Carrying More Than 150 Passengers or with Overnight Accommodations for More Than 49 Passengers §§114.100 to 122.910
- Subch. L Offshore Supply Vessels §§125.100 to 134.180
- Subch. M Towing Vessels §§136.100 to 144.920
- Subch. N Dangerous Cargoes §§147.1 to 148.450
- Subch. O Certain Bulk Dangerous Cargoes §§150.105 to 154.1872
- Subch. P Manning of Vessels [reserved]
- Subch. Q Equipment, Construction, and Materials: Specifications and Approval §§159.001-1 to 164.207-4
- Subch. R Nautical Schools §§166.01 to 169.857
- Subch. S Subdivision and Stability §§170.001 to 174.360
- Subch. T Small Passenger Vessels (under 100 Gross Tons) §§175.100 to 185.910
- Subch. U Oceanographic Research Vessels §§188.01-1 to 196.95-1
- Subch. V Marine Occupational Safety and Health Standards §§197.200 to 197.580
- Subch. W Lifesaving Appliances and Arrangements §§199.01 to 199.640