Title 46ShippingRelease 119-73

§50103 Determinations of essential services

Title 46 › Subtitle Subtitle V— - Merchant Marine › Part Part A— - General › Chapter CHAPTER 501— - POLICY, STUDIES, AND REPORTS › § 50103

Last updated Apr 6, 2026|Official source

Summary

The Secretary of Transportation must study and keep up-to-date lists of ocean services, routes, and shipping lines from U.S. ports (including territories) to foreign markets that are needed to support and protect U.S. foreign trade. When deciding which lines are essential, the Secretary must weigh things like how much it costs to run them, whether a line can only run at a big loss, how many trips and what kinds of ships are needed, the non‑money benefits to trade and national defense, and other practical business factors. The Secretary must also plan for the seasonal closing of the Saint Lawrence Seaway and set up alternate routes so service continues year-round. The Secretary must also track what bulk‑cargo services U.S. ships should provide for trade and defense, even if they are not on a specific route. The Secretary must record the needed ship characteristics — type, size, speed, propulsion (how they are powered), special express or super‑liner needs, and how often they should sail — to make sure service is adequate and reliable.

Full Legal Text

Title 46, §50103

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(a)(1)The Secretary of Transportation shall investigate, determine, and keep current records of the ocean services, routes, and lines from ports in the United States, or in the territories and possessions of the United States, to foreign markets, which the Secretary determines to be essential for the promotion, development, expansion, and maintenance of the foreign commerce of the United States. In making such a determination, the Secretary shall consider and give due weight to—
(A)the cost of maintaining each line;
(B)the probability that a line cannot be maintained except at a heavy loss disproportionate to the benefit to foreign trade;
(C)the number of voyages and types of vessels that should be employed in a line;
(D)the intangible benefit of maintaining a line to the foreign commerce of the United States, the national defense, and other national requirements; and
(E)any other facts and conditions a prudent business person would consider when dealing with the person’s own business.
(2)For purposes of paragraph (1), the Secretary shall establish services, routes, and lines that reflect the seasonal closing of the Saint Lawrence Seaway and provide for alternate routing of vessels through a different range of ports during that closing to maintain continuity of service on a year-round basis.
(b)The Secretary shall investigate, determine, and keep current records of the bulk cargo carrying services that should be provided by vessels of the United States (whether or not operating on particular services, routes, or lines) for the promotion, development, expansion, and maintenance of the foreign commerce of the United States and the national defense or other national requirements.
(c)The Secretary shall investigate, determine, and keep current records of the type, size, speed, method of propulsion, and other requirements of the vessels, including express-liner or super-liner vessels, that should be employed in—
(1)the services, routes, or lines described in subsection (a), and the frequency and regularity of the voyages of the vessels, with a view to furnishing adequate, regular, certain, and permanent service; and
(2)the bulk cargo carrying services described in subsection (b).

Legislative History

Notes & Related Subsidiaries

Historical and Revision Notes

Revised SectionSource (U.S. Code)Source (Statutes at Large) 50103(a)(1)46 App.:1121(a).June 29, 1936, ch. 858, title II, § 211(a)–(c), 49 Stat. 1989; Pub. L. 91–469, §§ 4, 35(a), (b), Oct. 21, 1970, 84 Stat. 1018, 1035; Pub. L. 97–31, § 12(67), Aug. 6, 1981, 95 Stat. 159. 50103(a)(2)46 App.:1213(a) (3d sentence related to 1121(a)).June 29, 1936, ch. 858, title VIII, § 809(a) (3d sentence related to 211(a)), as added Pub. L. 97–35, title XVI, § 1604, Aug. 13, 1981, 95 Stat. 751. 50103(b)46 App.:1121(b). 50103(c)46 App.:1121(c).

Reference

Citations & Metadata

Citation

46 U.S.C. § 50103

Title 46Shipping

Last Updated

Apr 6, 2026

Release point: 119-73