46 CFR § 42.05-40 - Great Lakes.

---
identifier: "/us/cfr/t46/s42.05-40"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 42.05-40 - Great Lakes."
title_number: 46
title_name: "Shipping"
section_number: "42.05-40"
section_name: "Great Lakes."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "E"
subchapter_name: "LOAD LINES"
part_number: "42"
part_name: "DOMESTIC AND FOREIGN VOYAGES BY SEA"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "46 U.S.C. 5101-5116; Department of Homeland Security Delegation No. 00170.1, Revision No. 01.4; section 42.01-5 also issued under the authority of 44 U.S.C. 3507."
cfr_part: "42"
---


# 42.05-40 Great Lakes.

(a) This term means the Great Lakes of North America.

(b) As used in this part, the term *solely navigating the Great Lakes* includes any special service coastwise navigation performed by the vessel.

(c) In concurrence with related Canadian regulations, the waters of the St. Lawrence River west of a rhumb line drawn from Cap de Rosiers to West Point, Anticosti Island, and west of a line along 63° W. longitude from Anticosti Island to the north shore of the St. Lawrence River shall be considered as a part of the Great Lakes. In addition, the Victoria Bridge, Montreal, Canada, is the dividing line between fresh water and salt water in the St. Lawrence River.

[CGFR 68-60, 33 FR 10051, July 12, 1968, as amended by CGD 73-49R, 38 FR 12290, May 10, 1973]