POL Government Elected Officials Auditor Mary Hull Caballero Charter, Code and Policies City Code & Charter Online Code & Charter Title 19 Chapter 19.16  Rules And Regulations
19.16.255 Ballast Logs.

All ballast logs, fending off floats, or camels when used by vessels at docks shall be properly fastened by chains, wire cable, or ropes in such a manner that they cannot float through their fastenings if disturbed by the displacement of water caused by any passing vessel or other cause; and all such floats shall have at least one preventer cable attached to it on end with the other end securely fastened to the ship or dock.