By May 1916, a fire-control director had been installed high on the forward tripod mast and approximately of additional deck armour was added after the Battle of Jutland. By April 1917, "Temeraire" had exchanged the three-inch AA gun on 'Y' turret for a four-inch gun and the stern torpedo tube had been removed. In 1918 a high-angle rangefinder was fitted and the four-inch AA gun was moved to the quarterdeck. After the war ended, four secondary guns were removed to provide extra space for naval cadets and both AA guns were dismounted.