Section 165.722 - Security Zone: St. Johns River, Jacksonville, Florida(a) Location. The water located within the following area is established as a security zone: beginning at the shoreline of the St. Johns River at the northernmost property line of Naval Air Station Jacksonville next to Timuquana Country Club, at 30°14'39.5" N, 81°40'45" W; thence northeasterly to 30°14'42" N, 81°40'42" W; thence south remaining 400 feet from the shoreline at mean high water; thence past Piney Point and Black Point to the northern edge of Mulberry Cover Manatee refuge, 400 feet from Naval Air Station Jacksonville boat ramp, at 30°13'00" N, 81°40'23.5" W; thence southwesterly in a straight line to position 30°12'14" N, 81°40'42" W; thence southerly, remaining 400' seaward of the mean high water shoreline to 30°11'40" N, 81°41'15.5" W; thence northwest to the point at the end of the property line of Naval Air Station Jacksonville just north of the Buckman Bridge at position 30°11'42.30" N, 81°41'23.66" W; thence northeasterly along the mean high water shoreline of the St. Johns River and Mulberry Cove to the point of beginning. Datum: NAD 83(b) In accordance with the general regulations in § 165.33 of this part, no person or vessel may enter or remain in the zone without the permission of the Captain of the Port Jacksonville, Florida. All other portions of § 165.33 remain applicable.(c) This regulation does not apply to Coast Guard vessels and authorized law enforcement vessels operating within the Security Zone.COTP Jacksonville Reg. 93-115, 60 FR 65571, Dec. 20, 1995