41 CFR § 102-117.50 - Coastwise laws.

---
identifier: "/us/cfr/t41/s102-117.50"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "41 CFR § 102-117.50 - Coastwise laws."
title_number: 41
title_name: "Public Contracts and Property Management"
section_number: "102-117.50"
section_name: "Coastwise laws."
chapter_number: 102
chapter_name: "FEDERAL MANAGEMENT REGULATION"
subchapter_number: "D"
subchapter_name: "TRANSPORTATION"
part_number: "102-117"
part_name: "117—TRANSPORTATION MANAGEMENT"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "31 U.S.C. 3726; 40 U.S.C. 121(c); 40 U.S.C. 501,  46 U.S.C. 55305; 49 U.S.C. 40118."
regulatory_source: "90 FR 58480, Dec. 16, 2025, unless otherwise noted."
cfr_part: "102-117"
---


# 102-117.50 Coastwise laws.

(a) Coastwise laws (46 U.S.C. chapter 551) require the use of U.S.-flag, coastwise-endorsed vessels for domestic water shipments between U.S. ports.

(b) For exceptions and further information, refer to regulations issued by the U.S. Customs and Border Protection (CBP) (19 CFR 4.80) and MARAD.