No owner, master, or other person in charge of or in command of any tugboat or towing boat in the harbor shall run, or cause to be run, such tugboat or towing boat, or anything that they may have in tow, upon, against, or over any rope, chain, or other fastening, mooring, dredge or other machine used by the city, or the United States Government, for deepening, widening, and improving the harbor, so that the said dredge or other machine shall be displaced, hindered, or delayed in the working thereof.
(Prior code § 38-22)