33 C.F.R. § 147.843 Thunder Horse Semi-Submersible safety zone.
Title 33 - Navigation and Navigable Waters
(a) Description. Thunder Horse Semi-Submersible, Mississippi Canyon 778 (MC 778), located at position 28°11'26" N, 88°29'44" W. The area within 500 meters (1640.4 feet) from each point on the structure's outer edge is a safety zone. These coordinates are based upon [NAD 83]. (b) Regulation. No vessel may enter or remain in this safety zone except the following: (1) An attending vessel; (2) A vessel under 100 feet in length overall not engaged in towing; or (3) A vessel authorized by the Commander, Eighth Coast Guard District. [CGD08–05–019, 70 FR 43770, July 29, 2005]
Title 33: Navigation and Navigable Waters
PART 147—SAFETY ZONES
§ 147.843 Thunder Horse Semi-Submersible safety zone.

