Section 147.1116 - Platform IRENE safety zone(a)Description: The area within a line 500 meters from each point on the structure's outer edge. The position of the center of the structure is 34°-36'-37.5" N, 120°-43'-46" W.(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, Eleventh Coast Guard District.CGD11-92-02, 57 FR 9054, Mar. 16, 1992