There was another swift commotion, another opening and closing of valves, and the arrow on the depth gauge leaped forward. Captain Bill was sending her down as far as he could as fast as he dared. Fifty feet, seventy feet, ... ninety feet. Hoping to throw the destroyer off, the Z3 doubled on her track. A hundred feet. Crash! Depth charge number one. According to Captain Bill, who is good at similes, it was as if a giant, wading along through the sea, had given the boat a vast and violent kick, and then leaning down had shaken it as a terrier shakes a rat. The Z3 rocked, lay on her side, and fell through the depths. A number of lights went out. Men picked themselves out of corners, one with the blood streaming down his face from a bad gash over his eye. Many of them told later of "seeing stars" when the vibration of the depth charge travelled through the hull and their own bodies; some averred that "white light" seemed to shoot out of the Z3's walls. Each man stood at his post waiting for the next charge. Crash! A second depth charge. To every one's relief, it was less violent than the first. A few more lights went out. Meanwhile the Z3 continued to sink and was rapidly nearing the danger point. Having escaped the first two depth charges, Captain Bill hastened to bring the boat up to a higher level. Then to make things cheerful, it was discovered that the Z3 showed absolutely no inclination to obey her controls. "At first," said Captain Bill, "I thought that the first depth bomb must have jammed all the external machinery, then I decided that our measures to rise had not yet overcome the impetus of our forced descent. Meanwhile the old hooker was heading for the bottom of the Irish Sea, though I'd blown out every bit of water in her tanks. Had to, fifty feet more, and she would have crushed in like an egg shell under the wheel of a touring car. But she kept on going down. The distance of the third, fourth and fifth depth bombs, however, put cheer in our hearts. Then, presently, she began to rise. The old girl came up like an elevator in a New York business block. I knew that the minute I came to the surface those destroyer brutes would try to fill me full of holes, so I had a man with a flag ready to jump on deck the minute we emerged. He was pretty damn spry about it, too. I took another look-see through the periscope, and saw that the destroyer lay about two miles away, and as I looked she came for me again. Meanwhile, my signal man was hauling himself out of the hatchway as if his legs were in boiling water." "We've got her!" cried somebody aboard the destroyer in a deep American voice full of the exultation of battle. The lean rifles swung, lowered.... "Point one, lower." They were about to hear "Fire!" when the Stars and Stripes and sundry other signals burst from the deck of the misused Z3.