The oil was still coming up in a visible thin stream from below the surface. T.B. 055 dropped a Reindeer buoy with moorings, to mark the spot exactly, got under way and came back over the position. As she passed, a depth-charge was dropped. The tide was fairly slack at the time, and there was every reason to believe that it found the target. Mr. Britton returned to the spot once more. The volume of oil rising had now increased, and a strong smell of oil fuel was noticed, which had not been there before. The blobs of oil which now came to the surface had brownish air-bubbles and froth among them; in the hydrophone, nothing was to be heard but the ordinary water noises. It was now 3.35 P.M., and the armed trawler _Sarba_ was seen approaching. Mr. Britton reported what he had been doing to Lieutenant Astbury, who at once stopped his own engines and used his hydrophone. Then, as he too could hear no sign of life, he took a sounding, found sixteen fathoms and a sandy bottom, and decided that the enemy must be still there, alive or dead. Accordingly he steamed clear of the position, turned and came back over it at full speed. He determined to set his depth-charge for eighty feet, in spite of the shallowness of the water, because, with the boat on the bottom at ninety-six feet, he would be absolutely certain of getting a very close explosion. The charge detonated, and he returned at once to the spot. Large bubbles of air and quantities of oil were coming up, and within a short time the oil was covering a very wide area. Sarba stood by all night, using her hydrophone frequently. It was now evident that the enemy was dead; but the more the circumstances were reflected upon, the more difficult it was to explain them. Next morning, when T.B. 055 had ‘proceeded to sea in accordance with programme,’ Lieutenant Astbury, in _Sarba_, was left alone, with nothing but two buoys and an oil patch to give so incredible a story any kind of reality. He got out a sweep wire with a sinker of 1¾ cwt. and took a sweep along the position. The sweep brought up on an immovable obstruction, and the incredible seemed once more possible. At 2.0 P.M. arrived the armed drifter _Sunshine_ and T.B. 058. They found _Sarba_ lying as near as possible in the position where she had exploded her depth-charge, and where her sweep had brought her up. They took a ground sweep under her, and their sweep wire also fouled the same obstruction. _Sarba_, like a faithful dog, remained on guard during the following night. At last, at 2.30 P.M. on November 2, the divers arrived. [Illustration: ‘The diver who first went down found the submarine lying on her side.’]