Cars of explosives which are to be transshipped on to a vessel shall not be brought into the City limits except when they can be loaded directly on to car floats, and immediately thereafter conveyed to the vessel at anchorage. City Code, 1927, art. 15, §65 1950, art. 11, §67 1966, art. 10, §66 1976/83, art. 10, §66 Ord. 13-336