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 Natal Flag of Natal The flag of Natal was the official flag of the South African colony of Natal from 1870 to 1910. It formed part of a system of colonial flags that were used throughout the British Empire. In a series of decisions made in 1864, 1865, and 1869, the British government decided that every colony should have a distinctive badge, to be displayed on flags at sea. The governor was to display the badge in the centre of the Union Jack when travelling by sea; vessels owned by the colony's government were to display it in the fly of