within 500 meters of the OCS facility. If the District Commander determines that the circumstances warrant the establishment of a safety zone and regulations the District Commander takes action as necessary consistent with the provisions of this part.

(b) Except as provided in paragraph (c) of this section, a safety zone and necessary regulations may be established concerning any OCS facility being constructed, maintained or operated on the Outer Continental Shelf, following publication of a notice of proposed rule making in the FEDERAL REGISTER and after interested parties have been given the opportunity to submit comments. A zone and necessary regulations may be in effect during any period when construction equipment and materials are within 500 meters of the construction site until the removal of all portions of the facility.

(c) A safety zone and necessary regulations may be established without public rule making procedures when the District Commander determined that imminent danger exists with respect to the safety of life and property on an OCS facility constructed, maintained, or operated on the Outer Continental Shelf, its appurtenances and attending vessels or adjacent waters. A safety zone and regulations may be made effective on the date the rule is published in the FEDERAL REGISTER. However, if circumstances require,

they may be placed into effect immediately, followed promptly by publication in the FEDERAL REGISTER. The District Commander may utilize, in addition to broadcast Notices to Mariners, Local Notices to Mariners, and Notices to Mariners, newspapers, and broadcasting stations to disseminate information concerning a safety zone and regulations pertaining thereto. The public may comment concerning the establishment of a safety zone or regulations under this paragraph. A safety zone or regulations may be modified or withdrawn, as appropriate, based on the comments received.

American Datum of 1983 (NAD 83), unless such geographic coordinates are expressly labeled NAD 83. Geographic coordinates without the NAD 83 reference may be plotted on maps or charts reference to NAD 83 only after application of the appropriate corrections that are published on the particular map or chart being used.

[CGD 78-160, 47 FR 9386, Mar. 4, 1982, as amended by CGD 86-082, 52 FR 33811, Sept. 8, 1987]

§ 147.15 Extent of safety zones.

A safety zone establishment under this part may extend to a maximum distance of 500 meters around the OCS facility measured from each point on its outer edge or from its construction site, but may not interfere with the use of recognized sea lanes essential to navigation.

§ 147.1101 Definitions.

Attending vessel. As used in safety zones established in the Eleventh Coast Guard District, unless otherwise stated, the term "attending vessel" refers to any vessel operated by the owner or operator of a facility located on the Outer Continental Shelf, which is used for the purpose of carrying supplies, equipment or personnel to or from the facility, engaged in construction, maintenance, alteration or repair of the facility, or which is used for further exploration, production, transfer or storage of natural resources from the seabed beneath the safety zone.

[CCGD 11-79-02, 47 FR 39679, Sept. 9, 1982; 48 FR 33263, July 21, 1983]

§ 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: (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, Eleventh Coast Guard District.

[CCGD 11-79-02, 47 FR 39679, Sept. 9, 1982; 48 FR 33263, July 21, 1983]

§ 147.1103 Platform GINA 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°-07'02′′N, 119°-16'-35"W.

(b) Regulations: 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, Eleventh Coast Guard District.

[CCGD 11-79-02, 47 FR 39679, Sept. 9, 1982; 48 FR 33263, July 21, 1983]

§ 147.1104 Platform ELLEN & ELLY safety zone.

(a) Description: The areas within a line 500 meters from each point on the outer edge of each structure. The structures are approximately 120 meters apart. The position of the center of each structure is: Platform Ellen, 33°-34′-57′′N, 118°-07′-42′′W; and Platform Elly, 33°-35'-00′′N, 118°-07'40"W.

(b) Regulations: No vessel may enter or remain in this safety zone except the following: (1) An attending vessel serving either structure, (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]

§ 147.1105 Platform HONDO 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°-23'27′′N, 120°-07'-14′′W.

(b) Regulations: No vessel may enter or remain in this safety zone except for 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, Eleventh Coast Guard District.

[CCGD 11-79-02, 47 FR 39679, Sept. 9, 1982; 48 FR 33263, July 21, 1983]

8147.1106 Exxon Santa Ynez offshore storage and treatment vessel mooring safety zone.

(a) Description: The area within a line 1108 meters for the center of the mooring. The position of the center of the mooring is 34°-24'-19′′N 120°06'00"-W.

(b) Regulations: 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, Eleventh Coast Guard District.

[CCGD 11-79-02, 47 FR 39679, Sept. 9, 1982; 48 FR 33263, July 21, 1983]

§ 147.1107 Platform GILDA 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°-10'56′′N. 119°-25′-07′′W.

(b) Regulations: No vessel may enter or remain in this safety zone except for 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, Eleventh Coast Guard District.

[CCGD 11-79-02, 47 FR 39679, Sept. 9, 1982; 48 FR 33263, July 21, 1983]

§ 147.1108 Platform EDITH 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 33°-35'45"N. 118°-08′-27′′W.

(b) Regulations: No vessel may enter or remain in this safety zone except for 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, Eleventh Coast Guard District.

[CCGD 11-79-02, 47 FR 39679, Sept. 9, 1982; 48 FR 33263, July 21, 1983]

(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 34-2809.5N, 120-40-46.1W.

(b) Regulations: No vessel may enter or remain in this safety zone except for 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, Eleventh Coast Guard District.

[CGD 11-84-01, 49 FR 33016, Aug. 20, 1984] § 147.1111 Platform EUREKA 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 33-3350N, 118-07-00W.

(b) Regulations: No vessel may enter or remain in this safety zone except the following: (1) An attending vessel,

(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 34-2942N, 120-42-08W.

(b) Regulations: 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, Eleventh Coast Guard District.

[CGD 11-84-01, 49 FR 33016, Aug. 20, 1984] 8147.1113 Platform GAIL 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°-07'30′′ N, 119'-24'-01" W.

(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, Eleventh Coast Guard District.

[CGD11-87-06, 52 FR 9657, Mar. 26, 1987]