33 C.F.R. § 147.819 Allegheny Tension Leg Platform safety zone.
Title 33 - Navigation and Navigable Waters
(a) Description. The Allegheny Tension Leg Platform (Allegheny TLP), Green Canyon Block 254A (GC 254A), is located at position 27°41'29.65" N, 90°16'31.93" W. The area within 500 meters (1640.4 feet) from each point on the structure's outer edge is a safety zone. (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. [CGD08–01–025, 68 FR 4102, Jan. 28, 2003]
Title 33: Navigation and Navigable Waters
PART 147—SAFETY ZONES
§ 147.819 Allegheny Tension Leg Platform safety zone.

