Section 147.807 - West Delta 143 Platform safety zone(a)Description. The West Delta 143 Platform is located at position 28°39'42" N, 89°33'05" W. The area within 500 meters (1640.4 feet) from each point on the structure's outer edge, not to extend into the adjacent Mississippi River Approach Fairway, is a safety zone.(b)Regulation. No vessel may enter or remain in this safety zone except: (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.CGD 08-99-023, 65 FR 16825 , Mar. 30, 2000