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 China flag. For a medium detachment, a modified flag is used. The flag has a length of 60 centimetres and a width of 80 centimetres. A 20-centimeter triangle is cut out of the fly edge of the flag and the golden emblem is shifted closer towards the hoist. The customs flag is a China's national flag with the emblem of customs at the lower right corner, which consists of a golden key and the Caduceus of Hermes, crossing with each other. The current customs flag was officially adopted in 1 October 1953. The customs flag should be hung at the bow