33 CFR § 149.570 - How is a platform, single point mooring, or submerged turret loading identified?

---
identifier: "/us/cfr/t33/s149.570"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 149.570 - How is a platform, single point mooring, or submerged turret loading identified?"
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "149.570"
section_name: "How is a platform, single point mooring, or submerged turret loading identified?"
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "NN"
subchapter_name: "DEEPWATER PORTS"
part_number: "149"
part_name: "DEEPWATER PORTS: DESIGN, CONSTRUCTION, AND EQUIPMENT"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1504, 1509; DHS Delegation No. 00170.1, Revision No. 01.4."
regulatory_source: "USCG-1998-3884, 71 FR 57651, Sept. 29, 2006, unless otherwise noted."
cfr_part: "149"
---


# 149.570 How is a platform, single point mooring, or submerged turret loading identified?

(a) Each platform, single point mooring, or submerged turret loading (STL) that protrudes above the water or is marked by a buoy must display the name of the deepwater port and the name or number identifying the structure, so that the information is visible:

(1) From the water at all angles of approach to the structure; and

(2) From aircraft on approach to the structure if the structure is equipped with a helicopter pad.

(b) The information required in paragraph (a) of this section must be displayed in numbers and letters that are:

(1) At least 12 inches high;

(2) In vertical block style; and

(3) Displayed against a contrasting background.

(c) If an STL protrudes from the water, it must be properly illuminated in accordance with § 149.540 of this part.

[USCG-1998-3884, 71 FR 57651, Sept. 29, 2006, as amended by USCG-2013-0397, 78 FR 39179, July 1, 2013]