Kelly Miller's History of the World War for Human Rights

by Kelly Miller

It has been estimated that Germany has anywhere from 250 to 500 submarines, and it is said that the aim is to produce 1000 of these craft, to absolutely destroy the commerce of the seas and starve into submission England and France.

HOW SUBMARINES WORK.

According to Herr Schmidt, the submarines work in groups of four. Because of the limited capacity of the boats for carrying provisions, supplies and fuel, it is necessary for them to have supply bases, to which they can return and secure torpedoes. In operation each group consists of four submarines, traveling along in a diamond-shaped formation, one in front, one on either flank and one in rear. Eight miles separate the boats. The leading submarine carries the extra gasoline and supplies and acts as a scoutship; she sights a vessel, reports its speed and direction and then submerges—her task is done.

The two torpedo carriers on either flank immediately change their courses so as to converge on the prey, and they arrive one on either side of her—they get her in between them. The boat in the rear keeps them informed as to the doomed ship's progress, and submerges at the last moment. She carries the extra crews for the fighting pair. The U-boats are fairly well protected against the onslaught of the light torpedo-boat destroyers and chasers, because the decks are protected by several feet of water at almost all times, while the commanding tower is covered with from two to three inches of the best steel armor plate.

It is related that at the outset of the U-boat menace, England ordered its commanding officers to ram the U-boats on sight. The length to which the Germans will go in an effort to win is illustrated by the fact that, in consequence of this order, a Von Tirpitz council presented this answer: Attacking submarines were equipped with explosive mines containing 300 to 400 pounds of nitroglycerin or guncotton. To the top of this mine was fastened a fake periscope. This devilish device was attached to the submarine by a light cable, and towed along the surface of the water 1000 feet or more behind the submarine. The result that would follow any attempt on the part of a commander to run down one of these decoys is readily imagined.

DESCRIPTION OF A PERISCOPE.

The periscope is distinctly a submarine device which is worthy of brief description. It is, in effect, a long tube, with an elbow joint at the top and a similar one at the bottom. At the elbow joints at both ends are arranged reflectors. The reflector in the upper end catches the object which comes within the range of vision, and reflects the image down the tube to the mirror at the lower elbow, where the pilot sees it. The principle of the periscope is the same as that of the "busybody," familiar to householders, and which is placed on the sill of an upper window, so that a person inside the house may see who is at the front door.

The Germans have recently devised a new form of periscope, designed to make the device invisible to the lookout of approaching boats. This device consists of two mirrors, put together like a "Y" lying on its side, the wide part in front. These skim through the waves and converge the image upon the low periscope's lens, which shoots the light down the tube to the receiving apparatus below. When looked at from a distance the mirrors reflect the surface of the sea, so that a lookout sees nothing but the waves as they are reflected in the mirror.

The Germans use the bottom of the sea as regular "land" for their supply bases, and when the submarines go to the surface it is precisely like an aeroplane mounting the air. The submarine fleet boasts also of "mother boats." They lie on the bottom of the ocean, in designated places, and rise at night to hand out their supplies. Crews are changed and tired men go back to the bottom to rest up, while fresher comrades take their places.

So, too, the submarine, with its ability to rest on the bottom of the sea, has become an efficient boat for mine laying. The mine layers work from the undersea boats without fear of disturbance, the divers walking out from the submarines to the floor of the sea without being seen or without ever coming to the surface.