“The U-boat rolls very easily; she is, of course, no heavier nor lighter than the water in which she floats, and if by chance she touches bottom in shallow water, she bounds about like a rubber ball on a pavement. Inside the sailors are thrown about and dashed against the machinery.

“That is the quality of everyday life in a U-boat retained below the surface. Now think what an emergence involves. Up she comes until the periscope can scrutinize the sky and the nearer sea. Nothing in sight? Thank God! She rises out of the water and some of the sailors get a breath of fresh air. Not all, for there is no room nor time for all of them to come out. But the fortunate ones who get to the hatches may even have the luck of sunshine. To come to the surface on a calm open sea away from any traffic at all is the secret hope of every U-boat sailor. But suppose now there is something in sight. Then the U-boat must come up with infinite discretion and examine the quarry. It looks an innocent craft, a liner, a trawler, a cargo-boat. But is that innocence certain? How does the U-boat man know that she hasn’t a gun? What new contrivance of the hunter may not hide behind that harmless-looking mask? Until they have put a ship down, the U-boat sailors never know what ugly surprise she may not have in store for them. When they approach a vessel they must needs be ignorant of what counter-attack creeps upon them from her unseen other side. As a consequence these men are in terror of every ship they hail.

“Is it any wonder then if their behaviour is hasty and hysterical, if they curse and insult the wretched people they are proposing to drown, if they fire upon them unexpectedly and do strange and abominable things? The U-boat man is no fine captain on his quarter deck. He is a man who lives a life of intense physical hardship and extreme fear, who faces overwhelming risks, in order to commit as inglorious a crime as any man can commit. He is a man already in hell.

“The Germans do what they can to keep up the spirit of these crews. An English captain who spent a fortnight upon one as a prisoner and who was recently released by way of Switzerland, says that when they had sunk a merchant ship ‘they played victory music on the gramophone.’ Imagine that bleak festival!

“The inevitable end of the U-boat sailor, unless he is lucky enough to get captured, is death, and a very horrible and slow death indeed. Sooner or later it is bound to come. Some never return from their first voyage. There is a brief spree ashore if they do; then out they go again. Perhaps they return a second time, perhaps not. Some may even have made a score of voyages, but sooner or later they are caught. The average life of a U-boat is less than five voyages—out and home. Of the crews of the original U-boats which began the U-boat campaign very few men survive to-day. When our young hopeful left his home in Germany to join the U-boat service, he left it for a certain death. He learns that slowly from the conversation of his mates. Men are so scarce now for this vile work that once Germany has got a man she will use him to the end.

“And that end—?

“I was given some particulars of the fate of one U-boat that were told by two prisoners who died at Harwich the other day. This particular boat was got by a mine which tore a hole in her aft. She was too disabled to come to the surface, and she began to sink tail down. Now the immediate effect of a hole in a U-boat is of course to bring the air pressure within her to the same level as the pressure of the water outside. For every ten yards of depth this means an addition of fourteen pounds to the square inch. The ears and blood vessels are suddenly subjected to this enormous pressure. There is at once a violent pain in the ears and a weight on the chest. Cotton wool has to be stuffed into ears and nostrils to save the ear drum. Then the boat is no longer on an even keel. The men stand and slip about on the sides of things. They clamber up the floor out of the way of the slowly rising water. For the water does not come rushing in to drown them speedily. It cannot do that because there is no escape for the air; the water creeps in steadily and stealthily as the U-boat goes deeper and deeper. It is a process of slow and crushing submergence that has the cruel deliberation of some story by Edgar Allan Poe; it may last for hours. A time comes when the lights go out and the rising waters stop the apparatus for keeping up the supply of oxygen and absorbing the carbonic acid. Suffocation begins. Think of what must happen in the minds of the doomed men crowded together amidst the machinery. In the particular case these prisoners described, several of the men drowned themselves deliberately in the rising waters inside the boat. And in another case where the boat was recovered full of dead men, they had all put their heads under the water inside the boat. People say the U-boat men carry poison against such mischances as this. They don’t. It would be too tempting....

“When it becomes evident that the U-boat can never recover the surface, there is usually an attempt to escape by the hatches. The hatches can be opened when at last the pressure inside is equal to that of the water without. The water of course rushes in and sinks the U-boat to the bottom like a stone, but the men who are nearest to the hatch have a chance of escaping with the rush of air to the surface. There is of course a violent struggle to get nearest to the hatch. This is what happened in the case of the particular U-boat from which these prisoners came. The forward hatch was opened. Our patrol boat cruising above saw the waters thrown up by the air-burst and then the heads of the men struggling on the surface. Most of these men were screaming with pain. All of them went under before they could be picked up except two. And these two died in a day or so. They died because coming suddenly up to the ordinary atmosphere out of the compressed air of the sinking submarine had burst the tissues of their lungs. They were choked with blood.

“Think of those poor creatures dying in the hospital. They were worn out by fits of coughing and hæmorrhage, but there must have been moments of exhausted quiet before the end, when our youngster lay and stared at the bleak walls of the ward and thought; when he asked himself, ‘What have I been doing? What have I done? What has this world done for me? It has made me a murderer. It has tortured me and wasted me.... And I meant well by it....’

“Whether he thought at all about the making of the submarine, the numberless ingenuities and devices, the patience and devotion, that had gone to make that grim trap in which he had been caught at last, I cannot guess.... Probably he took it as a matter of course....