• Part 41 - PART 41 [RESERVED]

• Part 42 [§ 42.01-1 - § 42.50-15] - PART 42—DOMESTIC AND FOREIGN VOYAGES BY SEA

• Part 43 - PART 43 [RESERVED]

• Part 44 [§ 44.01-1 - § 44.340] - PART 44—SPECIAL SERVICE LIMITED DOMESTIC VOYAGES

• Part 45 [§ 45.1 - § 45.197] - PART 45—GREAT LAKES LOAD LINES

• Part 46 [§ 46.01-1 - § 46.15-10] - PART 46—SUBDIVISION LOAD LINES FOR PASSENGER VESSELS

• Part 47 [§ 47.100 - § 47.640] - PART 47—COMBINATION LOAD LINES

• Part 50 [§ 50.01-10 - § 50.30-20] - PART 50—GENERAL PROVISIONS

• Part 51 - PART 51 [RESERVED]

• Part 52 [§ 52.01-1 - § 52.25-20] - PART 52—POWER BOILERS

• Part 53 [§ 53.01-1 - § 53.12-1] - PART 53—HEATING BOILERS

• Part 54 [§ 54.01-1 - § 54.30-15] - PART 54—PRESSURE VESSELS

• Part 56 [§ 56.01-1 - § 56.97-40] - PART 56—PIPING SYSTEMS AND APPURTENANCES

• Part 57 [§ 57.01-1 - § 57.06-5] - PART 57—WELDING AND BRAZING

• Part 58 [§ 58.01-1 - § 58.60-13] - PART 58—MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS

• Part 59 [§ 59.01-1 - § 59.20-1] - PART 59—REPAIRS TO BOILERS, PRESSURE VESSELS, AND APPURTENANCES

• Part 60 - PART 60 [RESERVED]

• Part 61 [§ 61.01-1 - § 61.40-10] - PART 61—PERIODIC TESTS AND INSPECTIONS

• Part 62 [§ 62.01-1 - § 62.50-30] - PART 62—VITAL SYSTEM AUTOMATION

• Part 63 [§ 63.01-1 - § 63.25-9] - PART 63—AUTOMATIC AUXILIARY BOILERS

• Part 64 [§ 64.1 - § 64.97] - PART 64—MARINE PORTABLE TANKS AND CARGO HANDLING SYSTEMS

• Part 66 - PART 66 [RESERVED]

• Part 67 [§ 67.1 - § 67.550] - PART 67—DOCUMENTATION OF VESSELS

• Part 68 [§ 68.1 - § 68.111] - PART 68—DOCUMENTATION OF VESSELS: EXCEPTIONS TO COASTWISE QUALIFICATION

• Part 69 [§ 69.1 - § 69.211] - PART 69—MEASUREMENT OF VESSELS