Section 147.1102 - Platform GRACE 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°-10'-47" N, 119°-28'-05" W.(b)Regulations: 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.CCGD 11-79-02, 47 FR 39679, Sept. 9, 1982; 48 FR 33263, July 21, 1983