The Irish Naval Jack, is worn whenever the Naval Ensign is worn except when a ship is underway. The Naval Jack consists of a green flag with a yellow harp and silver strings and it's also known as the Arms of Ireland. A gold harp on a blue field had been the arms of Ireland since the 16th century, but the United Irishmen changed the colour of the field from blue to green. It is flown in addition to the Naval Ensign, by Naval Ships at the Jack staff when at anchor, moored, alongside or when under way and dressed with Masthead Ensigns.
Formal Country Name: Republic of Ireland
Local Country Name: Republic of Ireland
Capital City of Irish Naval Jack: Dublin
Population of Irish Naval Jack: 3,883,159
Territory: 70,280 sq km