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Yerba Buena Island Lighthouse

Occ W 4s🇺🇸Northern California, USOperational

Location & Light Range

About Yerba Buena Island Lighthouse

Yerba Buena Island Lighthouse is a maritime navigation aid located in Northern California, US. It is currently operational and active, providing guidance to vessels navigating the surrounding waters. The light sits at a focal height of 29 meters above mean sea level.

Light characteristic: The identifying signal of this lighthouse is Occ W 4s. This means the light produces 1 flash every 4 seconds. Mariners use this distinctive pattern to positively identify the light and distinguish it from other aids to navigation in the area. The light displays a white signal, the most common color for major coastal lights.

Position: Yerba Buena Island Lighthouse is positioned at 37.8072°N, 122.3623°W, near Northern California in US.

Geographic context: Yerba Buena Island Lighthouse is situated on the North Pacific Ocean, within the US West Coast shipping lane — a major trans-Pacific trade route serving West Coast ports of the United States. The location falls within the temperate maritime climate zone.

Nearby lighthouses in US: Other lighthouses in the region include Abagadasset Point Range, Absecon, Admiralty Head Light, Ahukini Breakwater, Alameda County (Oakland Area) Lighthouses. View all on the Lighthouses Directory.

Nearby Ports

TREASURE ISLAND

USTSU

1 NMNNW

San Francisco

USSFO

2.6 NMSW

EMERYVILLE

USJEM

3.2 NMNE

Oakland

USOAK

3.6 NME

Berkeley

USJBK

4.2 NMNNE

Flash Characteristics

Characteristic Signature
Occ W 4s
Flash Type
Occ
Light Color
White
Flash Count
1 flash
Interval
4s

Physical Specifications

Focal Height
29m
Light Range
Not available
Status
ACTIVE
City
Northern California
Country
🇺🇸US
Latitude
37.8072°
Longitude
-122.3623°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Yerba Buena Island Lighthouse at night?+
Yerba Buena Island displays the characteristic Occ W 4s — 1 white flash every 4 seconds. Each lighthouse has a unique flash pattern published in the List of Lights, allowing mariners to positively identify it and distinguish it from other navigation aids in the area.
Which ports and harbors does Yerba Buena Island Lighthouse guide vessels into?+
Yerba Buena Island Lighthouse assists vessels approaching 5 nearby ports. The closest is TREASURE ISLAND at 1 NM to the NNW. Other ports served include San Francisco (2.6 NM SW), EMERYVILLE (3.2 NM NE), Oakland (3.6 NM E), Berkeley (4.2 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yerba Buena Island Lighthouse still active and maintained?+
Yes, Yerba Buena Island Lighthouse is currently operational. It is actively maintained and continues to emit its characteristic light signal for marine navigation. Most modern lighthouses are automated and monitored remotely by the national maritime authority.
What shipping routes pass near Yerba Buena Island Lighthouse?+
Yerba Buena Island Lighthouse is located within the US West Coast shipping lane — a major trans-Pacific trade route serving West Coast ports of the United States. This makes it an important navigation reference for commercial shipping traffic in the region.
How can I track vessels near Yerba Buena Island Lighthouse?+
You can track vessels near Yerba Buena Island Lighthouse in real time using MarineRadar. The platform shows live AIS positions of ships in the area, including vessel name, type, flag, speed, and course. Use the "Track Vessels Nearby" button on this page to open the live map centered on this lighthouse.