---
kind: "section"
citation: "33 C.F.R. § 149.535"
title: "33"
number: "149.535"
heading: "What are the requirements for rotating beacons on platforms?"
url: "https://uscodex.org/cfr/33/149.535"
---

# §149.535. What are the requirements for rotating beacons on platforms?


In addition to obstruction lights, the tallest platform of a deepwater port must have a lit rotating beacon that distinguishes the deepwater port from other surrounding offshore structures. The beacon must:

- (a) Have an effective intensity of at least 15,000 candela;
- (b) Flash at least once every 20 seconds;
- (c) Provide a white light signal;
- (d) Operate in wind speeds of up to 100 knots at a rotation rate that is within 6 percent of the operating speed displayed on the beacon;
- (e) Have one or more leveling indicators permanently attached to the light, each with an accuracy of ±0.25 ° or better; and
- (f) **Be located—**
  - (1) At least 60 feet (about 18.3 meters) above mean high water;
  - (2) Where the structure of the platform, or equipment mounted on the platform, does not obstruct the light in any direction; and
  - (3) **So that it is visible all around the horizon.**

## Notes

### Authority

Authority: 33 U.S.C. 1504, 1509; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: USCG-1998-3884, 71 FR 57651, Sept. 29, 2006, unless otherwise noted.