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 Guernsey Games. Research was carried out by Deputy Bailiff Sir Graham Dorey, of Guernsey's Flag Investigation Committee. The committee considered a number of designs. It was initially considered that the new flag for Guernsey should contain green, but it was ruled that the colour green has no historical basis in Guernsey aside of being used as a sporting colour by the Guernsey national football team in Muratti matches. Consideration was given to using the coat of arms of Guernsey on a St George's Cross but this was rejected on the grounds that the arms would be unidentifiable at a distance. It