Section 191, acts June 7, 1897, ch. 4, §1, 30 Stat. 99; Aug. 5, 1963, Pub. L. 88–84, §2, 77 Stat. 116, made general provision for sound signals for fog, etc.

Section 192, act June 7, 1897, ch. 4, §1, 30 Stat. 99, related to speed of vessels in fog, etc.