A prior section 312, acts Aug. 4, 1949, ch. 393, 63 Stat. 520; Aug. 3, 1950, ch. 536, § 14, 64 Stat. 407, related to relief of retired warrant officer promoted while on active duty, prior to repeal by Pub. L. 88–130, § 1(10)(A), Sept. 24, 1963, 77 Stat. 177.

2021—Subsec. (b)(4). Pub. L. 116–283, § 8504(a), substituted “maritime transportation system” for “marine transportation system”.

Subsec. (d). Pub. L. 116–283, § 8505(a)(1), substituted “individuals” for “persons” in introductory provisions.

2018—Pub. L. 115–282 renumbered section 57 of this title as this section.

2014—Subsec. (b)(4), (5). Pub. L. 113–281, § 203(1), added pars. (4) and (5).

Subsec. (c). Pub. L. 113–281, § 203(2), substituted “marine safety engineer, waterways operations manager, or port and facility safety and security specialist” for “or marine safety engineer”.

Subsec. (e). Pub. L. 113–281, § 221(b)(1)(B), redesignated subsec. (f) as (e) and struck out former subsec. (e) which related to assessment of adequacy of marine safety workforce.

Subsec. (f). Pub. L. 113–281, § 221(b)(1)(B)(ii), redesignated subsec. (g) as (f). Former subsec. (f) redesignated (e).

Subsec. (f)(2). Pub. L. 113–281, § 203(3), substituted “investigator, marine safety engineer, waterways operations manager, or port and facility safety and security specialist” for “investigator or marine safety engineer”.

Subsecs. (g), (h). Pub. L. 113–281, § 221(b)(1)(B)(ii), redesignated subsec. (h) as (g). Former subsec. (g) redesignated (f).