33 CFR § 167.3 - Geographic coordinates.

---
identifier: "/us/cfr/t33/s167.3"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 167.3 - Geographic coordinates."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "167.3"
section_name: "Geographic coordinates."
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"
---


# 167.3 Geographic coordinates.

Geographic coordinates are defined using North American 1927 Datum (NAD 27) unless indicated otherwise.

[CGD 90-039, 59 FR 21937, Apr. 28, 1994]