Quarantine Edinburgh and Leith, grain was from that date declared to be a non-susceptible article. About 1788 an order of the council required every ship liable to quarantine, in case of meeting any vessel at sea, or within four leagues of the coast of Great Britain or Ireland, to hoist a yellow flag in the daytime and show a light at the main topmast head at night, under a penalty of After 1800, ships from plague-countries (or with foul bills) were enabled to perform their quarantine on arrival in the Medway instead of taking a Mediterranean port on the way for
Flag of Saint Helena taken from the colonial seal of the colony. Ships registered in Saint Helena fly the Red Ensign; there is no defaced variant for the territory. Flag of Saint Helena The flag of Saint Helena was adopted on October 4, 1984. It is a defaced (ie. differentiated) Blue Ensign, i.e., a blue field with the Union Jack in the upper hoist-side quadrant and the shield from the coat of arms of Saint Helena centred on the outer half of the flag. The shield features a rocky coastline and three-masted sailing ship, with a Saint Helena plover, also known as a wirebird,