33 CFR § 147.875 - Safety Zone, Horn Mountain Spar, Outer Continental Shelf Facility, Mississippi Canyon 127.

---
identifier: "/us/cfr/t33/s147.875"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 147.875 - Safety Zone, Horn Mountain Spar, Outer Continental Shelf Facility, Mississippi Canyon 127."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "147.875"
section_name: "Safety Zone, Horn Mountain Spar, Outer Continental Shelf Facility, Mississippi Canyon 127."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "N"
subchapter_name: "OUTER CONTINENTAL SHELF ACTIVITIES"
part_number: "147"
part_name: "SAFETY ZONES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "14 U.S.C. 544; 43 U.S.C. 1333; 33 CFR 1.05-1; Department of Homeland Security Delegation No. 00170.1, Revision No. 01.4."
regulatory_source: "CGD 78-160, 47 FR 9386, Mar. 4, 1982, unless otherwise noted."
cfr_part: "147"
---


# 147.875 Safety Zone, Horn Mountain Spar, Outer Continental Shelf Facility, Mississippi Canyon 127.

(a) *Description.* The Horn Mountain Spar is in the deepwater area of the Gulf of America at Mississippi Canyon 127. The facility is located at: 28°51′57.5994″ N, 88°3′22.32″ W, (NAD 83) and the area within 500 meters (1640.4 feet) from each point on the facililty structure's outer edge is a safety zone.

(b) *Regulation.* No vessel may enter or remain in this safety zone except for the following:

(1) An attending vessel, as defined in 147.20;

(2) A vessel under 100 feet in length overall not engaged in towing; or

(2) A vessel authorized by the Commander, USCG Heartland District or a designated representative.

(c) *Requests for permission.* Persons or vessels requiring authorization to enter the safety zone must request permission from the Commander, USCG Heartland District or a designated representative. If permission is granted, all persons and vessels shall comply with the instructions of the Commander or designated representative.

[USCG-2021-0475, 88 FR 21476, Apr. 11, 2023]