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Roe Island Lighthouse

Fl🇺🇸San Francisco, USOperational

Roe Island Lighthouse was first lit in 1891 and stood watch over Suisun Bay, opposite the Port Chicago Naval Weapons Station. The structure served mariners for over fifty years until July 17, 1944. On that date, an ammunition explosion at the nearby Port Chicago munitions terminal severely damaged the lighthouse. The blast rendered the structure unsafe, leading to its abandonment. It was later sold and converted into a private summer cottage. This second chapter ended when the lighthouse was destroyed by fire. Only pilings remain visible in the bay today.

Why it matters: The lighthouse guided vessels through Suisun Bay, a significant waterway within the San Francisco Bay Area's inland system. Its operational life concluded dramatically due to the Port Chicago disaster.

Background
Roe Island Lighthouse was a lighthouse on Roe Island on the east end of Suisun Bay, California.
Characteristic Signature
Fl
Flash Type
Flashing
Raw Code
Fl W 5
Focal Height
12m
Geographic Range
11NM
Year Built
1891

Significant events: heavily damaged by a disastrous explosion of ammunition at the Port Chicago munitions terminal on 17 July 1944, sold and used as a summer cottage, destroyed by fire

Nearest Port
San Francisco(0.5 km)
ARLHS No.
USA-700
Wikidata
Q7357527

Structure: Roe Island Lighthouse once stood watch over the waters of Suisun Bay, directly across from what would become the Port Chicago Naval Weapons Station. For over five decades, from its establishment in 1891 until 1944, it guided mariners through this vital waterway, helping to ensure safe passage in this busy part of the San Francisco Bay Area's inland system. Its story took a tragic turn on July 17, 1944, when a catastrophic explosion of ammunition at the nearby Port Chicago munitions terminal severely damaged the lighthouse. The force of the blast left the structure heavily compromised, rendering it obsolete and unsafe for its original purpose. Subsequently abandoned, the lighthouse was sold and embarked on a new, unexpected chapter, serving for a number of years as a private summer cottage, a quiet retreat from the bay's maritime traffic. However, this second life was also cut short when the lighthouse was ultimately consumed by fire. Today, only the ghostly pilings remain visible in the bay, a silent reminder of its former presence and the dramatic events that shaped its fate in the heart of Suisun Bay.

City
San Francisco
Country
🇺🇸United States
Region
California
Sea Region
Suisun Bay opposite the Port Chicago Naval Weapons Station
Latitude
37.8107°
Longitude
-122.4124°
Flag
Type
Name
Dist.
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How do mariners identify Roe Island Lighthouse at night?+
Roe Island displays the characteristic Fl. 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 Roe Island Lighthouse guide vessels into?+
Roe Island Lighthouse assists vessels approaching 5 nearby ports. The closest is TREASURE ISLAND at 2.1 NM to the ENE. Other ports served include San Francisco (2.3 NM SSE), TRAVIS (3.3 NM WNW), Sausalito (4.1 NM NW), Tiburon (4.2 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Roe Island Lighthouse still active and maintained?+
Yes, Roe 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 Roe Island Lighthouse?+
Roe 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 Roe Island Lighthouse?+
You can track vessels near Roe 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.