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 Hong Kong In 1870, a "white crown over HK" badge for the Blue Ensign flag was proposed by the Colonial Secretary. The letters "HK" were omitted and the crown became full-colour three years later. It is unclear exactly what the badge looked like during that period of time, but it was unlikely to be the "local scene". It should have been a crown of some sort, which may, or may not, have had the letters "HK" below it. In 1876, the "local scene" badge () was re-adopted to the Blue Ensign flag with the Admiralty's approval. A coat of arms for Hong