Therefore, in stating my requirements of colliers, I gave the number necessary to enable almost the whole Fleet to be fuelled simultaneously; in other words, the number of colliers was dependent on the number of coal-burning ships in the Fleet. Some slight reduction was found possible, to allow for the probable case of some ships requiring less coal than others, thus admitting of two such ships using one collier in succession; but, broadly speaking, the requirements were as stated. When the cargo of colliers fell below a certain minimum, they return to Cardiff to refill to economise tonnage. At Rosyth the situation was eased by the transport of coal by rail to Grangemouth and its transshipment to colliers there. As we needed colliers as coal-storing ships, so also we required ammunition ships to carry a proportion of the reserve ammunition for the Fleet. There were no facilities at Scapa or Cromarty for storage on shore. The number of ships required for this service was, however, much smaller. Floating storage of all sorts possesses one great advantage over shore storage; should strategic conditions necessitate a change of base, the coal, ammunition and other auxiliaries can move with the Fleet. The same argument applies in a lesser degree to floating docks. A consideration of all these facts connected with the development of fleet bases will show that this question necessarily required a good deal of attention on the part of my Staff and myself, and was incidental to the development of the Grand Fleet. VII.--THE PERSONNEL AND ITS WELFARE Another factor in the development of the Fleet, by no means the least important, was that of the moral and spirit of the personnel. It is, of course, impossible to exaggerate the importance of this question as an element in the efficiency of the Fleet. In the early months of war, when the Fleet was continually at sea, the few hours spent in harbour were fully occupied in coaling and storing the ships; but these conditions could not be continued indefinitely. As the months passed with no sign of enemy vessels at sea and time in harbour increased as compared to that spent at sea, it became necessary to find some diversion for the minds of the officers and men.