HMS Iron Duke, a Dreadnought Battleship, was named after Arthur Wellesley, the first Duke of Wellington and built at Portsmouth Dockyard in 1912.

She was the flagship of the the Grand Fleet in the First World War including the Battle of Jutland. 

In 1926 HMS Iron Duke was assigned to the Atlantic Fleet  and became a training ship.

In  the Second World War HMS Iron Duke was moored at Scapa Flow as a harbour defence ship.