CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER H—PASSENGER VESSELS (parts 70 to 81) > PART 78—OPERATIONS > SUBPART 78.23—Whistling (§78.23-1 to §78.23-1) > 78.23-1—Unnecessary whistling prohibited.

78.23-1—Unnecessary whistling prohibited.

(a) The unnecessary sounding of the vessel's whistle is prohibited within any harbor limits of the United States.
(b) [Reserved]