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POL Government Elected Officials Auditor Griffin-Valade Charter, Code & Policies City Code & Charter Online Code & Charter Title 19 Chapter 19.16  Rules And Regulations
19.16.310 Lights and Gangways on Vessels at Wharves.

Every vessel lying alongside a wharf, or vessel lying alongside a vessel berthed at a wharf shall, from sunset until sunrise, be provided with the proper lights, and shall be provided continuously with the appliances in the way of gangways and manropes as may, in the opinion of the Harbor Master or in fact, be necessary for the convenience and safety of person passing to and from the vessel.  Every gangway fixed for the purpose of giving the crew or other persons access to the ship after dark, shall be brightly illuminated by the best available means as long as such gangway is in use.