History of Cobh

During World War I, Queenstown was a naval base for British and American destroyers operating against U-boats that preyed upon allied merchant vessels. Q-ships (heavilyarmed merchant ships with concealed weaponry, designed to lure submarines into making surface attacks) were called "Q-ships" as many were fitted out in Queenstown. The first division of American destroyers arrived in May 1917, and the sailors who served on those vessels were the first American servicemen in combat duty in the war. When the convoy arrived in port, after a rough passage in what were little more than open boats, they were met with a great crowd of sailors and townspeople, thankful for their help in stopping the U-boats that were blockading western Europe. The British Commodore met the captain of the American flagship by jumping onto the dock, and asked him how soon the weather-beaten American ships could be put to use. "We're ready now, sir!" was the widely quoted answer from the Captain.

Due to its tactical military importance, under the terms of the Anglo-Irish Treaty 1921 the port remained a UK sovereign base, see Treaty Port. Along with the other Treaty ports it was handed over to the government of the Irish Free State in 1938