Quarantine "yellow jack" but this was also a name for yellow fever, which probably derives its common name from the flag, not the color of the victims (cholera ships also used a yellow flag). The plain yellow flag ("Quebec" or Q in international maritime signal flags) probably derives its letter symbol for its initial use in "quarantine", but this flag in modern times indicates the opposite—a ship that declares itself free of quarantinable disease, and requests boarding and routine port inspection. Australia has perhaps the world's strictest quarantine standards. Quarantine in northern Australia is important because of its proximity to South-east
Flag of Ottawa appearance. It also violated rules of heraldry by placing colour next to colour. In 1987, in an attempt to spruce it up, the city's coat of arms was added to the centre. There was little controversy when the transition board decided the new city should get a new flag. Flag of Ottawa The flag of Ottawa is highlighted by a stylized O design. This stylized O is meant to represent both a maple leaf (symbolizing Canada) and the Peace Tower and Centre Block of the parliament buildings (symbolizing Ottawa). It is meant to be simple, but look festive, and to