---
kind: "unit"
title: "46"
title_heading: "Shipping"
key: "chI/subchA/part7"
level: "part"
label: "Part 7"
heading: "Boundary Lines"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/46/chI-subchA-part7"
sections_count: 37
---

# Part 7 — Boundary Lines

Title 46 C.F.R. — Shipping › Chapter I — Coast Guard, Department of Homeland Security › Subchapter A — Procedures Applicable to the Public

## Sections

- [§7.1. General purpose of boundary lines.](/cfr/46/7.1.md)
- [§7.5. Rules for establishing boundary lines.](/cfr/46/7.5.md)
- [§7.10. Eastport, ME to Cape Ann, MA.](/cfr/46/7.10.md)
- [§7.15. Massachusetts Bay, MA.](/cfr/46/7.15.md)
- [§7.20. Nantucket Sound, Vineyard Sound, Buzzards Bay, Narragansett Bay, MA, Block Island Sound and easterly entrance to Long Island Sound, NY.](/cfr/46/7.20.md)
- [§7.25. Montauk Point, NY to Atlantic Beach, NY.](/cfr/46/7.25.md)
- [§7.30. New York Harbor, NY.](/cfr/46/7.30.md)
- [§7.35. Sandy Hook, NJ to Cape May, NJ.](/cfr/46/7.35.md)
- [§7.40. Delaware Bay and tributaries.](/cfr/46/7.40.md)
- [§7.45. Cape Henlopen, DE to Cape Charles, VA.](/cfr/46/7.45.md)
- [§7.50. Chesapeake Bay and tributaries.](/cfr/46/7.50.md)
- [§7.55. Cape Henry, VA to Cape Fear, NC.](/cfr/46/7.55.md)
- [§7.60. Cape Fear, NC to Sullivans Island, SC.](/cfr/46/7.60.md)
- [§7.65. Charleston Harbor, SC.](/cfr/46/7.65.md)
- [§7.70. Folly Island, SC to Hilton Head Island, SC.](/cfr/46/7.70.md)
- [§7.75. Savannah River/Tybee Roads.](/cfr/46/7.75.md)
- [§7.80. Tybee Island, GA to St. Simons Island, GA.](/cfr/46/7.80.md)
- [§7.85. St. Simons Island, GA to Little Talbot Island, FL.](/cfr/46/7.85.md)
- [§7.90. St. Johns River, FL.](/cfr/46/7.90.md)
- [§7.95. St. Johns Point, FL to Miami Beach, FL.](/cfr/46/7.95.md)
- [§7.100. Florida Reefs and Keys from Miami, FL to Marquesas Keys, FL.](/cfr/46/7.100.md)
- [§7.105. Marquesas Keys, FL to Rio Grande, TX.](/cfr/46/7.105.md)
- [§7.110. Mamala Bay, HI.](/cfr/46/7.110.md)
- [§7.115. Santa Catalina Island, CA.](/cfr/46/7.115.md)
- [§7.120. Mexican/United States border to Point Fermin, CA.](/cfr/46/7.120.md)
- [§7.125. Point Vincente, CA to Point Conception, CA.](/cfr/46/7.125.md)
- [§7.130. Point Conception, CA to Point Sur, CA.](/cfr/46/7.130.md)
- [§7.135. Point Sur, CA to Cape Blanco, OR.](/cfr/46/7.135.md)
- [§7.140. Cape Blanco, OR to Cape Flattery, WA.](/cfr/46/7.140.md)
- [§7.145. Strait of Juan de Fuca, Haro Strait and Strait of Georgia WA.](/cfr/46/7.145.md)
- [§7.150. Canadian (BC) and United States (AK) Borders to Cape Spencer, AK.](/cfr/46/7.150.md)
- [§7.155. Cape Spencer, AK to Cape St. Elias, AK.](/cfr/46/7.155.md)
- [§7.160. Point Whitshed, AK to Aialik Cape, AK.](/cfr/46/7.160.md)
- [§7.165. Kenai Peninsula, AK to Kodiak Island, AK.](/cfr/46/7.165.md)
- [§7.170. Alaska Peninsula, AK to Aleutian Islands, AK.](/cfr/46/7.170.md)
- [§7.175. Alaska Peninsula, AK to Nunivak, AK.](/cfr/46/7.175.md)
- [§7.180. Kotzebue Sound, AK.](/cfr/46/7.180.md)