Quarantine with a disinfecting stove, have a right to navigate the Canal, in quarantine, subject only to the landing of those who were suffering from plague. Plain yellow, green, and even black flags have been used to symbolize disease in both ships and ports, with the color yellow having a longer historical precedent, as a color of marking for houses of infection, previous to its use as a maritime marking color for disease. The present flag used for the purpose is the "Lima" (L) flag, which is a mixture of yellow and black flags previously used. It is sometimes called the
Flag of New South Wales 1865 in which all colonial vessels should "wear the Blue/Red Ensign with the seal or badge of the colony in the fly thereof". New South Wales then adopted a second flag in 1870 and it was almost identical to that of Victoria (with gold stars; 5, 6, 7, 8, 9 points). This flag was also a defaced British Blue Ensign with the "Governor's Badge" located in the fly. The badge was the Southern Cross and an imperial crown situated above the Southern Cross. The difference between this flag and that of the Victorian flag was that the stars were gold