The U.S. Coast Guard operates a mandatory Vessel Traffic 
Services (VTS) system in the San Francisco Bay and sur-
rounding areas. Vessel operating procedures and designated 
radiotelephone frequencies are published in 33 CFR 161, the 
U.S. Coast Pilot, and/or the VTS User's Manual.
All of the San Pablo Bay is within the VTS area with the 
exception of the Petaluma River Entrance Channel.