33 CFR § 167.77 - In the approach to Boston, MA: Traffic separation scheme.

---
identifier: "/us/cfr/t33/s167.77"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 167.77 - In the approach to Boston, MA: Traffic separation scheme."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "167.77"
section_name: "In the approach to Boston, MA: Traffic separation scheme."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "P"
subchapter_name: "PORTS AND WATERWAYS SAFETY"
part_number: "167"
part_name: "OFFSHORE TRAFFIC SEPARATION SCHEMES"
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. 70001, 70003; Department of Homeland Security Delegation No. 0170.0."
regulatory_source: "CGD 81-080, 48 FR 36456, Aug. 11, 1983, unless otherwise noted."
cfr_part: "167"
---


# 167.77 In the approach to Boston, MA: Traffic separation scheme.

(a) A separation zone 1 mile wide is established and is centered upon the following geographic positions:

| Latitude | Longitude |
| --- | --- |
| 42°20.73′ N | 70°39.06′ W. |
| 42°18.28′ N | 70°01.14′ W. |
| 40°49.25′ N | 69°00.81′ W. |

(b) A traffic lane for northbound traffic is established between the separation zone and a line connecting the following geographical positions:

| Latitude | Longitude |
| --- | --- |
| 40°50.47′ N | 68°58.67′ W. |
| 42°20.17′ N | 69°59.40′ W. |
| 42°22.71′ N | 70°38.62′ W. |

(c) A traffic lane for southbound traffic is established between the separation zone and a line connecting the following geographical positions:

| Latitude | Longitude |
| --- | --- |
| 42°18.82′ N | 70°40.49′ W. |
| 42°16.39′ N | 70°02.88′ W. |
| 40°48.03′ N | 69°02.95′ W. |

[USCG-2010-0718, 75 FR 77534, Dec. 13, 2010]