FAR and DFARS › FAR Part 47: Transportation › Subpart 47.5
FAR 47.502 Policy.
The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.
In plain English
FAR 47.502 states the U.S. government's policy on using U.S.-flag vessels for ocean transportation, based on several cargo preference acts. It requires that at least 50% of certain government cargo's gross tonnage be shipped on privately owned U.S.-flag commercial vessels when available at fair and reasonable rates. This matters to contractors because it may affect how they arrange shipping for government supplies.
Applies to: Government agencies acquiring supplies that may require ocean transportation, and their contractors
What it requires
- Ensure that at least 50 percent of the gross tonnage of certain supplies is transported on privately owned U.S.-flag commercial vessels, to the extent such vessels are available at fair and reasonable rates.
Key terms: U.S.-flag vessels · Cargo Preference Act of 1904 · Merchant Marine Act of 1936 · Cargo Preference Act of 1954 · gross tonnage
Written by AI from this section's text. A guide, not legal advice: the text below rules.
The text
(a) The policy of the United States regarding the use of U.S.-flag vessels is stated in the following acts:
(1) The Cargo Preference Act of 1904 (10 U.S.C. 2631), which requires the Department of Defense to use only U.S.-flag vessels for ocean transportation of supplies for the Army, Navy, Air Force, or Marine Corps unless those vessels are not available at fair and reasonable rates.
(2) The Merchant Marine Act of 1936 (46 U.S.C. 1101), which declares it is the policy of the United States to foster the development and encourage the maintenance of its merchant marine.
(3) The Cargo Preference Act of 1954 (46 U.S.C. 1241(b), which is Section 901(b) of the Merchant Marine Act). Under this Act, Government agencies acquiring, either within or outside the United States, supplies that may require ocean transportation shall ensure that at least 50 percent of the gross tonnage of these supplies (computed separately for dry bulk carriers, dry cargo liners, and tankers) is transported on privately owned U.S.-flag commercial vessels to the extent that such vessels are available at rates that are fair and reasonable for U.S.-flag commercial vessels. This applies when the supplies are—
(i) Acquired for the account of the United States;
(ii) Furnished to, or for the account of, a foreign nation without provision for reimbursement;
(iii) Furnished for the account of a foreign nation in connection with which the United States advances funds or credits, or guarantees the convertibility of foreign currencies; or
(iv) Acquired with advance of funds, loans, or guaranties made by or on behalf of the United States.
(b) Additional policies providing preference for the use of U.S.-flag vessels are contained in—
(1) 46 U.S.C. 1241(a) for official business travel by officers and employees of the United States and for the transportation of their personal effects; and
(2) 46 U.S.C. 1241(e) for the transportation of motor vehicles owned by Government personnel when transportation is at Government expense or otherwise authorized by law.
(c) The provisions of the Cargo Preference Act of 1954 may be temporarily waived when the Congress, the President, or the Secretary of Defense declares that an emergency justifying a temporary waiver exists and so notifies the appropriate agency or agencies.
← 47.501 Definitions. · 47.503 Applicability. →
Rule changes for FAR Part 47
- Federal Acquisition Regulation: Revolutionary Federal Acquisition Regulation Overhaul Parts 9, 27, and 47 ↗ · proposed 2026-09-18 · comments due 2026-10-19
- Federal Acquisition Regulation: Training To Prevent Human Trafficking for Certain Air Carriers; Correction ↗ · final rule 2024-12-30 · effective 2025-01-03
- Federal Acquisition Regulation: Training To Prevent Human Trafficking for Certain Air Carriers ↗ · final rule 2024-12-16 · effective 2025-01-03
Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Plain words for the terms: glossary.