I went up in a leisurely fashion, through the conning tower, which is over the control room, and reported myself. He indicated a low-lying patch of smoke on the horizon far away on the starboard bow. I was obliged to confess that it conveyed nothing to me, when he aroused my intense interest by stating that it was, without doubt, being emitted from a British submarine, who are known to frequent these waters. He was proceeding away from us, and was, even then, six or seven miles away, so an attack was out of the question. The engineer, who had joined us, drew my attention to the thin wisp of almost invisible blue-grey smoke from our own stern. The contrast was certainly striking! Over dinner I gave it as my opinion that the British boats were pretty useless. Alten would not agree, and stated that, though in certain technical aspects they were in a position of inferiority, yet in personnel and skill in attacking they were fully our equals. He seemed to hold them in considerable respect, and he remarked that, when making a passage, he was more anxious on their account than in any other way. He informed me that, on the last passage he made, he was attacked by a British boat which he never saw, the only indication he received being a torpedo which jumped out of the water almost over his tail. Luckily it was very rough at the time, which made the torpedo run erratically, otherwise they would undoubtedly have been hit. What appeared to astonish him was the fact that the British boat had been able to make an attack in such weather. We are now charging on one engine, 500 amperes on each half-battery. * * * * * We are due back at Zeebrugge at 10 p.m. to-night. We should have been in at dawn to-day, but we received a wireless from the senior officer, Zeebrugge, to say that mine-laying was suspected, and we were to wait till the "Q.R." channel, from the Blankenberg buoy, had been swept. We lay in the bottom for eight hours, a few miles from the western end of the channel. Our trip was quite successful, but not without certain excitements. On the night of the 23rd we passed fairly close to a fishing fleet on the Dogger Bank, and saw the lights of several steamers in the distance. As our first business was to lay our mines in the appointed place, we did not worry them. We burnt usual navigation lights, or rather side lights which appear to be usual, except that, by a little fitting which Alten has made himself, the arcs of bearing on which the lights show can be changed at will. His idea is that, should we appear to be approaching a steamer which he wishes to avoid, in many cases, by shining a little more or less red and green light, we can make her think that we are a steamer on such a course that it is her duty by the rules of the road to keep clear of us.