At daylight on the second day my position was still miserable. The battery was getting low again, the sea had gone down, and when I put my periscope up at 9 a.m. the horizon seemed to be ringed with patrols. I felt as if I was in an invisible net, and though I endeavoured to conceal my apprehension from the crew, I could see from the listless way they went about their duties that they realized that once again we were near the end of our resources. All the forenoon we crept along at thirty metres, until the tension was broken at 1 p.m. by a furious depth-charge attack. In some extraordinary way they had located me again and closed in upon me. The first charges were some little distance off, and as they got closer a feeling of desperation overcame me, and I seriously contemplated ending the agony by surfacing and fighting to the last with my gun. Curiously enough, the procedure that I adopted was the exact opposite. I decided to dive deep. I went down to 114 metres. At this exceptional depth, three rivets in the pressure hull began to leak, and jets of water with the rigidity of bars of iron shot into the boat. I held on for five minutes, which was sufficient to save me from the depth-charge attack, though two which went off almost above me broke some lamps. I then came up to twenty metres and slowly crawled on. Throughout the long afternoon, though we were not directly attacked again, I heard depth-charges on several occasions sufficiently close to me to demonstrate that these implacable and tireless devils had an idea of the area I was in. By a supreme effort, working one motor at the only speed it would go, viz., "Dead slow," I managed to squeeze out the battery until I estimated it must be dusk. There was only one thing to do--I surfaced. It was not as dark as I had hoped, and I saw a fairly large sloop-like vessel, about eight thousand metres away, on the port beam. She must have seen me simultaneously, as the flash of a gun darted from her, the shell falling short. I couldn't dive; there seemed only one thing to do: fight and then die. I ordered the gun's crew up, and the unequal duel began. We were going full speed on the Diesels, and my course was east by north. A good deal of water and spray was flying over the gun, and my crew had little hope of doing much accurate shooting, but I have often found that when one is being fired at there is nothing so comforting as the sound of one's own gun. Our enemy was armed with two large guns, fifteen centimetres or over, but had no speed, a discovery which raised my hopes again. It was soon evident that, provided we were not heading for another patrol, if we could survive ten minutes' shelling, we should be saved for the time being by the fading light, which was evidently causing our enemy increasing difficulties, as his shots alternated between very short and very much over.