California Code, Harbors and Navigation Code - HNC § 1196.5

(a) The board shall contract with an independent entity to conduct a study of the effects of work and rest periods on psychological ability and safety for pilots.  The study shall evaluate sleep- and human-related factors for pilots, and shall include information and recommendations on how to prevent pilot fatigue and ensure the safe operation of vessels.

(b) The board shall, based on the results of, and recommendations contained in, the study, promulgate regulations for pilots establishing requirements for adequate rest periods intended to prevent pilot fatigue.

(c) The study required to be conducted pursuant to subdivision (a) shall be funded by revenues received by the board from the board operation surcharge, as described in Section 1159.2.  The board shall have authority, consistent with Section 1159.2, to collect and appropriate adequate funding to ensure that the study is completed.