SAN DIEGO BAY, CALIFORNIA (SHELTER ISLAND, HARBOR ISLAND, CORONADO, CHULA VISTA) AND MISSION BAY

San Diego Bay: boating safety

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San Diego Bay, the most south-westerly harbour in the continental United States, is a large natural bay shared by recreational boats, a major US Navy base, cruise ships and cargo terminals. It is a common first US stop for yachts coming north from Mexico and a base for cruising the Southern California coast.

LIFE IN DANGER AT SEA
Call 911
Call Coast Guard Sector San Diego on 911. On the radio: MAYDAY on VHF 16, or DSC on channel 70.

United States: all rescue numbers → On the rescue map → Print an emergency card →

Harbour and marinas

The Port of San Diego Harbor Police patrol the bay and run dispatch 24 hours a day, 7 days a week, including the Shelter Island station at 1401 Shelter Island Drive. For an emergency on the water, call them or the US Coast Guard San Diego on VHF channel 16.

Port of San Diego · Port of San Diego ▾
portofsandiego.org (2026-10-14): “Anyone causing, observing or discovering an emergency situation, CALL IMMEDIATELY: 619.295.3121 or VHF radio, Channel 16 U.S. Coast Guard San Diego”
portofsandiego.org (2026-10-14): “Harbor Police dispatch and public safety services remain in operation 24 hours a day, seven days a week.”

The Port runs guest docks at the south-western end of Shelter Island, booked online, with a limit of 15 days in any 40-day period.

Port of San Diego ▾
portofsandiego.org (2026-10-14): “Guest docks allow you to stay 15 days in a 40-day period. The docks are located at the southwestern end of Shelter Island.”

Weather

The National Weather Service San Diego office forecasts the sea off San Diego as the zone "Coastal Waters from San Mateo Point to the Mexican Border and out to 30 nm" (PZZ750).

National Weather Service ▾
forecast.weather.gov (2026-10-14): “Coastal Waters from San Mateo Point to the Mexican Border and out to 30 nm”

Local rules

Visiting boats book Port anchorages online, for at most 72 hours, with a 24-hour gap before the next permit. You may not anchor in the cable and pipeline areas, and must leave free passage for other craft and the approaches to wharves.

Port of San Diego · Port of San Diego · Port of San Diego ▾
portofsandiego.org (2026-10-14): “Anchorages are a maximum of 72-hour reservation. There must be a 24-hour gap before applying for another permit.”
portofsandiego.org (2026-10-14): “This area has submerged pipelines, power and communication cables. Vessels are not permitted to anchor in the area at any time.”
portofsandiego.org (2026-10-14): “shall leave a free passage for other craft and shall not unreasonably obstruct the appproaches to the wharves in the harbor.”

Since 1 January 2025 the Port's safe-harbour spot to drop anchor in bad weather is the Glorietta Bay basin, not La Playa Cove. It is not an official Coast Guard anchorage: show anchor lights, keep out of the channel, and anchor at your own risk.

Port of San Diego · Port of San Diego ▾
portofsandiego.org (2026-10-14): “The new safe harbor location will be in the Glorietta Bay Basin with the following coordinates:”
portofsandiego.org (2026-10-14): “Note: The designated safe harbor location is not an official anchorage established by USCG, all vessels are required to follow navigation/anchor light requirements per USCG Nav Rules. Care must be taken to not anchor in the channel.”

To operate any motorised boat (including a sailboat with an engine) on California waters you must pass an approved boating safety exam and carry a California Boater Card; the law has been phased in by age since 2018.

Port of San Diego ▾
portofsandiego.org (2026-10-14): “If you operate any type of motorized vessel on California waterways (including powered sailboats/paddlecraft), you will be required to pass an approved boating safety examination and carry a lifetime California Boater Card.”

Hazards

San Diego is a major Navy port. The lee of Point Loma south of Ballast Point is reserved for pilot, patrol and government craft, the numbered mooring buoys in the bay are for the US Navy only, and anchoring in the naval restricted areas needs Navy permission.

Port of San Diego ▾
portofsandiego.org (2026-10-14): “The area in the lee of Point Loma, south of Ballast Point and west of the east line of the project channel, is reserved for pilot boats and harbor patrol or U.S. Government craft. All the numbered mooring buoys in the bay are for use by the U.S. Navy.”

Hospital and medical

Scripps Mercy Hospital San Diego, in Hillcrest, has a 24-hour emergency room that is a Level I trauma centre.

Scripps Health ▾
scripps.org (2026-10-14): “including a 24-hour emergency room that is a Level I Trauma Center”

Arriving from abroad

Boats arriving from abroad report to CBP. Boats under 130 ft can go straight to the Shelter Island Harbor Police Dock (14 ft deep at low water) and must call CBP immediately on arrival.

U.S. Customs and Border Protection · U.S. Customs and Border Protection · U.S. Customs and Border Protection ▾
cbp.gov (2026-10-14): “Vessels under 130 feet may report directly to the Shelter Island Harbor Police Dock.”
cbp.gov (2026-10-14): “Upon arrival at Shelter Island harbor Police Dock, you must immediately notify CBP by calling (619) 491-2600 option #9.”
cbp.gov (2026-10-14): “Masters should be aware the water depth adjacent to this dock is 14-feet at MLLW.”

Frequently asked

Who do I call in an emergency at sea near San Diego Bay?

Call Coast Guard Sector San Diego on 911. On the radio: MAYDAY on VHF channel 16, or a DSC distress alert on channel 70.

How do I contact the harbour in San Diego Bay?

The Port of San Diego Harbor Police patrol the bay and run dispatch 24 hours a day, 7 days a week, including the Shelter Island station at 1401 Shelter Island Drive. For an emergency on the water, call them or the US Coast Guard San Diego on VHF channel 16.

Where do I get the marine forecast for San Diego Bay?

The National Weather Service San Diego office forecasts the sea off San Diego as the zone "Coastal Waters from San Mateo Point to the Mexican Border and out to 30 nm" (PZZ750).

Read before you sail

Nearby destinations

Local rules change. Spotted something out of date? support@vesselsos.com