Section 4671 Of Chapter 4.5. For-hire Vessels From California Public Utilities Code >> Division 2. >> Chapter 4.5.

. (a) Upon filing of the evidence of liability protection pursuant to Section 4663, the commission shall provide a certificate of filing to the for-hire vessel owner or operator. The certificate shall be no larger than 8 1/2 by 11 inches in size. The for-hire vessel owner or operator shall post the certificate of filing on the vessel in a prominent location which is visible to the passengers.
  (b) No certificate that has been canceled, suspended, or revoked, or that is not valid shall be posted on a vessel.