"For an hour and a half the netting carried us with it, and although I made every effort to get clear of it, it seemed impossible. There was nothing to do but increase the weight in the submarine as much as possible so that I might try to break the netting. Fortunately, when we had started I had pumped in from five to six tons of water, filling all the tanks. I increased the weight of the boat to the utmost, and suddenly we felt a shock and were clear of the netting. I then descended as deeply in the water as I could, the manometer showing thirty metres. We remained under water for eighteen hours. When I wanted to ascertain where we were I noticed that my compass was out of order. For a time I steered by the green color of the water, but at last I had to get rid of the ballast in order to rise. I then discovered that the manometer continued to register the same depth, and was also out of order. "I had, therefore, to be very careful not to rise too high and thus attract the attention of the torpedo-boats. Slowly the periscope rose above the surface, and I could see the enemy in front of me, and toward the left the east coast of England. I tried to turn to starboard, but the rudder did not work. In consequence, I had to sink again to the bottom of the sea, where I remained for six hours, at the end of which time I had succeeded in putting the compass in order, and also in repairing the steering-gear. But upon rising this time, we were detected by a torpedo-boat, which made straight for us, forcing me to descend again." (This apparently was before depth-bombs came into use.) "I remained submerged for two hours, then turned slowly outward, and at a distance of some fifty metres from the leading enemy craft, passed toward the open sea. At 9 o'clock in the evening we were able to rise and proceed in safety." Here is a human document, is it not? It is the experience of the tarpon at the undersea end of the line, or, in human terms, the hidden drama of man against man, drama of the sort made possible by the ingenuity of this modern age. Submarine-chasers are shallow craft, capable of a speed of thirty-five miles an hour or more, mounting guns fore and aft. Some of our chasers measure more than 200 feet over all (_Eagle_ class), while others measure 110 feet. The British, as already said, like the 80-footer, although using all sizes. Well, in any event, the chaser cruises about looking for surface waves. Now, the surface wave is the path marked by a submarine on the surface of the water. Even when she is fifty feet below the surface she leaves this palpable pathway up above. And few submarines travel at a depth of sixty feet. Then besides this track there are air-bubbles and spots of oil, all confirming the presence beneath the water of the U-boat.