Harbors and Navigation Code § 495
ARTICLE 3. Actions Against Vessels
In any action brought pursuant to the provisions of this chapter, the complaint shall designate the vessel by name, and shall be verified by the oath of the plaintiff, or someone on his behalf.
The summons and copy of the complaint shall be served on the owners if they can be found; otherwise, they may be served on the master, mate, or person having charge of the vessel.