These are links to the subparts of the federal code regulating commercial diving.

TITLE 46- Shipping, Chapter 1- Coast Guard, Department of Transportation, Part 197- General Provisions

		§ 197.200	Purpose of this subpart.
		§ 197.202	Applicability of this subpart.
		§ 197.203	Right of appeal.
		§ 197.204	Definitions for this subpart.
		§ 197.205	Availability of standards.
		§ 197.206	Substitutes for required equipment, materials, apparatus, arrangements, procedures, or tests.
		§ 197.208	Designation of person-in-charge.
		§ 197.210	Designation of diving supervisor.
		§ 197.300	Applicability of this subpart.
		§ 197.310	Air compressor system.
		§ 197.312	Breathing supply hoses.
		§ 197.314	First aid and treatment equipment.
		§ 197.318	Gages and timekeeping devices.
		§ 197.320	Diving ladder and stage.
		§ 197.322	Surface-supplied helmets and masks.
		§ 197.324	Diver's safety harness.
		§ 197.326	Oxygen safety.
		§ 197.328	PVHO--General.
		§ 197.330	PVHO--Closed bells.
		§ 197.332	PVHO--Decompression chambers.
		§ 197.334	Open diving bells.
		§ 197.336	Pressure piping.
		§ 197.338	Compressed gas cylinders.
		§ 197.340	Breathing gas supply.
		§ 197.342	Buoyancy-changing devices.
		§ 197.344	Inflatable floatation devices.
		§ 197.346	Diver's equipment.
		§ 197.400	Applicability.
		§ 197.402	Responsibilities of the person-in-charge.
		§ 197.404	Responsibilities of the diving supervisor.
		§ 197.410	Dive procedures.
		§ 197.420	Operations manual.
		§ 197.430	SCUBA diving.
		§ 197.432	Surface-supplied air diving.
		§ 197.434	Surface-supplied mixed-gas diving.
		§ 197.436	Liveboating.
		§ 197.450	Breathing gas tests.
		§ 197.452	Oxygen cleaning.
		§ 197.454	First aid and treatment equipment.
		§ 197.456	Breathing supply hoses.
		§ 197.458	Gages and timekeeping devices.
		§ 197.460	Diving equipment.
		§ 197.462	Pressure vessels and pressure piping.
		§ 197.480	Logbooks.
		§ 197.482	Logbook entries.
		§ 197.484	Notice of casualty.
		§ 197.486	Written report of casualty.
		§ 197.488	Retention of records after casualty.
		§ 197.501	Applicability.
		§ 197.505	Definitions.
		§ 197.510	Incorporation by reference.
		§ 197.515	Permissible exposure limits (PELs).
		§ 197.520	Performance standard.
		§ 197.525	Responsibility of the person in charge.
		§ 197.530	Persons other than employees.
		§ 197.535	Regulated areas.
		§ 197.540	Determination of personal exposure.
		§ 197.545	Program to reduce personal exposure.
		§ 197.550	Respiratory protection.
		§ 197.555	Personal protective clothing and equipment.
		§ 197.560	Medical surveillance.
		§ 197.565	Notifying personnel of benzene hazards.
		§ 197.570	Recordkeeping.
		§ 197.575	Observation of monitoring.
		§ 197.580	Appendices.