(a) The area. Beginning at the intersection of Pier 21 and the bulkhead line, thence northwesterly along the bulkhead to the northernmost point of Treasure Island; thence 288° true, 290 yards; thence 26° true, 475 yards; thence 115° 30′ true, 520 yards; thence 152° true, 500 yards to Pier 21; thence along the pier to the point of beginning.

(b) The regulations. No person shall enter the restricted area. No vessels, except those engaged in naval operations, shall lie, anchor, moor or unnecessarily delay in the area. Vessels may pass through the area in the process of ordinary navigation except as directed by patrol boats. The regulations in this paragraph shall be enforced by the Commandant, Twelfth Naval District, and such agencies as he may designate.