Title 46 › Subtitle Subtitle V— - Merchant Marine › Part Part A— - General › Chapter CHAPTER 501— - POLICY, STUDIES, AND REPORTS › § 50103
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
Shipping — Source: USLM XML via OLRC
Legislative History
Reference
Citation
46 U.S.C. § 50103
Title 46 — Shipping
Last Updated
Apr 6, 2026
Release point: 119-73