Cal. Harb. & Nav. Code § 773.7

The operator, or the operator’s employee or agent, of a charter boat, prior to getting underway, shall orient each passenger concerning emergency procedures. A public announcement shall be made at the beginning of each trip to afford all passengers knowledge of the stowage location of life preservers, a demonstration of the proper method of donning and adjusting life preservers, the type and location of all lifesaving devices carried on the vessel, and the location of and contents of the emergency check-off list as prescribed in 46 C.F.R. 185.25-1. This public announcement shall be identified as a safety briefing in compliance with state law so as to differentiate it from a general information announcement.