POL Government Elected Officials Auditor Mary Hull Caballero Charter, Code & Policies City Code & Charter Online Code & Charter Title 19 Chapter 19.16  Rules And Regulations
19.16.315 Safety Nets on Vessels.

Every ocean going vessel lying at a berth and secured, except river boats, shall have safety nets suspended below any landing stage or gangplank as will prevent any person from falling into the water in the event any person slips off the landing.  The nets must extend at least 5 feet past each side of all gangways.  Safety nets may be regular cargo nets, tarpaulins, sailcloth, canvas, or any other material that is pliable and of sufficient strength to hold the body of an adult person who may fall from the gangway.

EXCEPTION: This regulation may be waived by the Harbor Master.