- Title 1 - General Provisions
- Title 2 - Grants and Agreements
- Title 3 - The President
- Title 4 - Accounts
- Title 5 - Administrative Personnel
- Title 6 - Domestic Security
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- Title 9 - Animals and Animal Products
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- Title 16 - Commercial Practices
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- Title 18 - Conservation of Power and Water Resources
- Title 19 - Customs Duties
- Title 20 - Employees' Benefits
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- Title 27 - Alcohol, Tobacco Products and Firearms
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- Title 44 - Emergency Management and Assistance
- Title 45 - Public Welfare
- Title 46 - Shipping
- Title 47 - Telecommunication
- Title 48 - Federal Acquisition Regulations System
- Title 49 - Transportation
- Title 50 - Wildlife and Fisheries
CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER U—OCEANOGRAPHIC RESEARCH VESSELS (parts 188 to 196) > PART 196—OPERATIONS > SUBPART 196.20—Whistling (§196.20-1 to §196.20-1)