The Harwich Flotilla certainly did its full share of the work that made the North Sea too dangerous for the enemy pirates. Latterly the German submarines, in their anxiety to reach waters where they could carry out their operations in conditions of less danger, endeavoured to escape from the North Sea as quickly as possible, travelling on the surface. Many of these fell victims to our mines, and, if they dived, to our depth charges. During the first months of 1918 the British Navy definitely got the better of the submarine enemy, and so many German submarines did not return to their base that panic seized the sailors who manned the "U" boats. We hear strange tales now of submarine crews that refused to join their ships, and of press-gangs that were sent to sweep up what men they could find in the brothels and taverns of a German seaport before the ship could put to sea. One of the duties of the submarines of the Harwich Flotilla was to watch for and attack the enemy submarines as they attempted to escape from the North Sea by one or other of the two swept channels used by them for this purpose, one channel being carried from Heligoland in a northwesterly direction, the other one running close under the Frisian Islands. Ingenious traps were laid for the enemy; they were allowed no respite. It was in vain that they frequently changed the direction of their channels. No sooner had they prepared a new channel across the minefields than our alert submarines discovered it and blocked it with mines. Some figures given by Sir Eric Geddes the other day show how effective was the work done by our submarine mine-layers. During the first six months of 1918 over a hundred German boats were caught by the mines laid by our submarines off the German North Sea coast, and in one month alone the mine barrier across the Channel below Ostend trapped seventeen German submarines. On the other hand, the Germans also were very vigilant. Their Zeppelin patrols, especially during last summer, were efficient, and were successful in discovering the position of the channels which we had swept across the German minefields. There can be no doubt that the Zeppelins were of considerable service to the Germans in the North Sea; not that they did much damage with the bombs that they dropped--indeed, I have heard of one instance only of a bomb falling on a ship of the Harwich Force--but for a time our patrols were persistently followed by these scouting aircraft, flying overhead out of range of our guns, signalling our movements to the Huns. To our submarines working on the further side of the North Sea they were also a source of trouble, for over there the sea is much clearer than on our side, and a submarine below the surface is, as a rule, easily to be distinguished by a Zeppelin hovering above it. Before the end of the war, however, the activities of the Zeppelins were much reduced by the action of our own aircraft.