You never can be certain if they have seen you or not, and the tendency is to take it for granted that they have done so. If you are then in enemy waters you must be on the _qui vive_ for being hunted by the usual methods; if not in actual enemy local waters, you feel that your chance of a target has gone for the day, and that even if a target does come by, she will be well protected and on the look-out for periscopes. On the whole, however, the German aircraft did not do much, and they certainly did not make the British submarines nervous. The game, in fact, rather worked the other way, as far as the Zeppelins were concerned. It was easy to work out (the German being of a methodical and regular nature), from the continued reports of our boats of the times and rendezvous of Zeppelin patrols, just where a Zeppelin might be expected to be found, and the resultant action by our own aircraft brought two of these huge sea-scouts down in flames. It should be mentioned that our boats are supplied with "sky-searcher" periscopes, which can either sweep the horizon or swivel so as to watch the motions of anything from the horizontal plane up to the zenith. A seaplane is a different proposition. Submarine "C 25" was attacked by five German seaplanes off Harwich on 6th July 1918. Several thousand rounds of machine-gun ammunition were fired at her and a number of bombs dropped. The bombs, even when they hit direct, did very little damage, being of probably not more than 10 lb. weight. The incendiary bullets from the machine-guns, however, killed the captain (Lieutenant Bell) and five men, who from a position on the bridge were trying to drive off the enemy with a Lewis gun. As the incident occurred close to the English coast, the success of the enemy on this occasion may be put down to the fact that the submarine, under the impression that the aircraft must be friendly, made no attempt to dive until the bursting of a couple of bombs on her hull rendered her incapable of submerging.