It had fallen to my lot in 1912 to carry out competitive trials of the Director System and the alternative system already in use, and the results of these trials had fully confirmed me in my previous opinion of the great value of the Director System. I was able to press these views on my return to the Admiralty at the end of 1912 as Second Sea Lord, and it was then decided to provide all the later ships with the arrangement. Little progress had, however, been made when the War broke out, only eight battleships having been fitted. Early in 1915 arrangements were made, with the assistance of Sir Percy Scott and the warm support of Lord Fisher, then First Sea Lord, by which the battleships and battle-cruisers were supplied with this system, without being put out of action or sent to a dockyard for the purpose. The necessary instruments were manufactured at various contractors’ shops, and the very laborious task of fitting them, and the heavy electric cables, on board the ships was carried out by electricians sent to the various bases. The complicated work naturally took a considerable time, and many vexatious delays occurred; but gradually all ships were fitted, Sir Percy Scott rendering invaluable assistance at headquarters. As a first step, the system was fitted to the heavy guns mounted in turrets, and by the date of the Battle of Jutland there were few ships that were not supplied with the system, although six of those last fitted had not had much experience with it. The conditions under which that action was fought converted any waverers at once to a firm belief in the Director System, and there was never afterwards any doubt expressed as to its great value. Further efforts were made later to accelerate the work, and the system was extended to smaller vessels. This had been the intention even before the action, but there were then still many who were unconvinced. However, during the remainder of 1916 and 1917 the work was pressed forward, and the system became universal for all guns and in all classes of ships.