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Welcome to the Flotilla 4-9, District 11NR Web Site

Flotilla 113-04-09 logo


At the heart of Silicon Valley, California is Flotilla 04-09 of the United States Coast Guard Auxiliary. We Participate in a wide range of activities in support of the U.S. Coast Guard and its missions. Some of our activities include marine patrols, Vessel Safety Checks, verifying aids to navigation, supporting marine and environmental safety, standing radio watches, and much more.

Our members come from many diverse backgrounds. We share a commitment to boating safety, a passion for the Auxiliary, and a desire to give back to our communities.

The flotilla is always happy to welcome new members. The officers of 04-09 are committed to ensuring each member has every opportunity to participate in the activities of their choosing and to provide all available resources, so that each member may obtain their full potential.

If you would like to visit us, observe one of our meetings, or to learn more about Flotilla 04-09 and the U.S. Coast Guard Auxiliary in general, please contact us here.


Surface Operations - Flotilla Members perform safety and aids-to-navigation patrols in the San Francisco Bay Area. Auxiliary vessels and their crews work under the control of the Coast Guard, and aid in search and rescue (SAR), marine safety, and other missions. Auxiliary crew members and Coxswains qualify using the same boat crew training manual as used by Coast Guard Regulars and Reservists, and must satisfy annual currency maintenance. Auxiliarists are volunteers.

Boating Safety - Auxiliarists from 04-09 teach classes to members of the general public and to members of the Auxiliary in the Silicon Valley. Public classes include boating skills and seamanship (basic power), sailing fundamentals (basic sail), and basic and advanced coastal navigation. Auxiliarists also provide voluntary vessel safety checks and conduct other programs to enhance boating safety.
Photograph of Auxiliary member involved in search and rescue

Environmental Protection - Auxiliarists from 04-09 and other flotillas join Coast Guard active duty and reservists to aid NOAA and NMFS in managing the San Francisco Bay. Auxiliarists are deployed on Coast Guard Auxiliary surface and air missions.

Coast Guard Mission Support - Auxiliarists from 04-09 also volunteer to serve alongside regular and reserve members of the Coast Guard in operational and administrative programs. Flotilla members serve as radio watch standers and have served onboard several Coast Guard vessels and facilities.