Section 147.859 - Safety Zone; Gulfstar 1 SPAR, Mississippi Canyon Block 724, Outer Continental Shelf on the Gulf of Mexico(a)Description. The Gulfstar 1 Spar is in the deepwater area of the Gulf of Mexico at Mississippi Canyon Block 724. The facility is located at 28°14'05.904" N, 88°59'43.306" W, and the area within 500 meters (1640.4 feet) from each point on the facility structure's outer edge is a safety zone.(b)Regulation. No vessel may enter or remain in this safety zone except the following:(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 or a designated representative.USCG-2014-0242, 79 FR 51899 , Sept. 2, 2014