City Code Section
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.