[Footnote 1: Karl was quite right; it is evident that he had the misfortune to encounter one of our new hydrophone-hunting groups, just started In the Fair Island Channel. The incident of the depth-charges every half-hour was known as "Tickling up." Probably the patrol only heard faint noises from him.--ETIENNE.] As an hour had elapsed since the last depth-charge, I felt fairly happy at coming up, and on making the surface I was delighted to find a pitch-black night and a considerable sea. From 10 p.m. to 1 a.m. I actually had three hours of peace, and in this period I managed to cram a considerable amount of stuff into the batteries. The densities were rising nicely and all seemed well, when I did what I now see was a very foolish thing. I made my 1 a.m. wireless report to Nordreich, in which I requested orders at 3 a.m. and reported my position, together with the fact that I had been badly hunted. In twenty-five minutes they were on me again! I had most idiotically assumed that the English had no directional wireless in these parts. They have. They've got everything that they have ever tried up there; it was concentrated in that infernal Fair Island Channel. I was only saved by seeing a destroyer coming straight at me, silhouetted against, the low-lying crescent of a new moon. When I dived she was about six hundred metres away. As I have confessed to doing a foolish thing, I give myself the pleasure of recording a cleverer move on my part. I anticipated depth-charge attack as a matter of course, but instead of going down to twenty-five metres, I kept her at twelve. The depth-charges came all right, seven smashing explosions, but, as I had calculated, they were set to go off at about thirty metres, and so were well below me. The boat was thrown bodily up by one, and I think the top of the conning tower must have broken surface, but there was little danger of this being seen in the prevailing water conditions. * * * * * I have just had to stop recording my experiences of the past forty-eight hours, as the Navigator, who is on watch, sent down a message to say that smoke was in sight. The next hour was full of anxiety, but by hauling off to port we managed to lose it. I then had a little food, and I will now conclude my account before trying again to get some sleep. _The account continued._ All my hopes of getting up again that night, both for the purpose of charging and of getting the 3 a.m. signal, were doomed to be disappointed, as the hydrophone operator kept on reporting the noise of destroyers overhead. Occasional distant thuds seemed to indicate a never-ending supply of depth-charges, but they were about four or five miles from me. Perhaps some other unfortunate devil was going through the fires of hell.