33 CFR § 67.20-5 - Obstruction lights.

---
identifier: "/us/cfr/t33/s67.20-5"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 67.20-5 - Obstruction lights."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "67.20-5"
section_name: "Obstruction lights."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "C"
subchapter_name: "AIDS TO NAVIGATION"
part_number: "67"
part_name: "AIDS TO NAVIGATION ON ARTIFICIAL ISLANDS AND FIXED STRUCTURES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "14 U.S.C. 503, 544; 43 U.S.C. 1333; DHS Delegation No. 00170.1, Revision No. 01.4."
regulatory_source: "CGFR 58-17, 23 FR 3377, May 20, 1958, unless otherwise noted."
cfr_part: "67"
---


# 67.20-5 Obstruction lights.

The obstruction lights shall be white lights as prescribed in Subpart 67.05 of this part. The lights shall be of sufficient candlepower as to be visible at a distance of at least five nautical miles 90 percent of the nights of the year. The lights shall be displayed not less than 20 feet above mean high water, but not at a height greater than that governed by the requirement in § 67.05-1(f) that mariners be able to see at least one of the lights, regardless of the angle of approach, until within 50 feet of the structure, visibility permitting.

[CGFR 58-34, 23 FR 7701, Oct. 4, 1958, as amended by USCG-2001-10714, 69 FR 24983, May 5, 2004]