In the event of a fire occurring on board any vessel in the Port of Ashtabula, except vessels underway, or on the pier or wharf to which such vessel is moored, such vessel may sound five prolonged blasts on the whistle or siren as an alarm indicating such fire. The signal may be repeated at intervals to attract attention and shall not be used for any other purpose in Ashtabula Harbor. The signal shall not be used as a substitute for, but may be used in addition to other means of reporting a fire. "Prolonged blast" used in this section means a blast of from four to six seconds duration.
(1980 Code 92.29)