Now during the years 1915 and 1916, merchant shipping, apart from those ships especially chartered by the Government, continued under the direction of its various owners. In 1917, however, the Liner Requisitioning Scheme, came into being, and a Shipping Controller was appointed. Under this scheme all British shipping came under the control of the Government, the object being, in view of the shortage of tonnage caused by the depredations of the submarines, to confine steamers to those trades necessary for providing the Allies with the essential foodstuffs and munitions of war. The greatest percentage of these had, of course, to be obtained from America, and in consequence many steamers which had been trading to other parts of the world, were diverted to the North Atlantic, and placed under the management of the Companies already established on these particular routes. The owners of these transferred steamers were given permission to allot their ships to any of the lines so established, and it came about that the Cunard Company, in addition to their own ships, had the management of a large number of vessels thus diverted. It is estimated, in fact, that the number of additional steamers so handled by the Company, amounted to more than 400. In addition to this, the Company managed several prize steamers captured from the enemy and neutral steamers that had been placed at the disposal of the Allies, and it thus happened that the Cunard management found itself in charge of vessels from the Indian, China, South African, and Australian trades, assembled from the ends of the earth in this vital emergency. [Illustration: TORPEDOING OF THE “LUSITANIA”] Some idea of the magnitude of the work thus carried upon the shoulders of the Cunard management may be gathered from the facts that in one year alone not less than 200 sailings were made from American and Canadian ports, and that over 10,000 tons of cargo were often carried in one steamer.