Section 466m, act June 30, 1948, ch. 758, § 17, as added Nov. 3, 1966, Pub. L. 89–753, title II, § 210, 80 Stat. 1252, authorized a study by Secretary of the Interior, and a report to Congress not later than July 1, 1967, of the extent of pollution of the navigable waters of the United States from litter and sewage deposited into such waters from watercraft.

Section 466n, act June 30, 1948, ch. 758, § 18, as added Nov. 3, 1966, Pub. L. 89–753, title II, § 210, 80 Stat. 1252, authorized a study by Secretary of the Interior, and a report to Congress not later than Jan. 30, 1968, relating to incentives, including, but not limited to, tax and other financial incentives, to assist in the construction of industrial anti-pollution facilities.