{"data":{"id":"us/33-cfr-167.401","jurisdiction":"us","citation":"33 CFR 167.401","heading":"Off San Francisco: Precautionary area.","body":"(a)(1) A precautionary area is established bounded to the west by an arc of a circle with a radius of 6 miles centering upon geographical position 37°45.00′ N, 122°41.50′ W and connecting the following geographical positions:\nLatitude Longitude\n37°42.70′ N 122°34.60′ W.\n37°50.30′ N 122°38.00′ W.\n(2) The precautionary area is bounded to the east by a line connecting the following geographic positions:\nLatitude Longitude\n37°42.70′ N 122°34.60′ W.\n37°45.90′ N 122°38.00′ W.\n37°50.30′ N 122°38.00′ W\n(b) A pilot boarding area is located near the center of the precautionary area described in paragraph (a) of this section. Due to heavy vessel traffic, mariners are advised not to anchor or linger in this precautionary area except to pick up or disembark a pilot.","path":["Title 33—Navigation and Navigable Waters","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER P—PORTS AND WATERWAYS SAFETY","PART 167—OFFSHORE TRAFFIC SEPARATION SCHEMES","Subpart B—Description of Traffic Separation Schemes and Precautionary Areas"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-33.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:35Z","sha256":"c703362efb0ba5777d36f0924896e3b19873579be845cfe8076b63c62c02034b","source_id":"us-cfr","stale":true,"prev":"us/33-cfr-167.400","next":"us/33-cfr-167.402"},"notice":"GroundRules: Original legal text. Not legal advice."}