: The Journal of Submarine Commander von Forstner by Forstner Georg G Nther Freiherr Von Hammond John Hays Commentator Codman Russell Mrs Translator - World War 1914-1918 Personal narratives; World War 1914-1918 Naval operations Submarine; Submarine warfare;

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of the enemy's fire.

The battleship is to-day, notwithstanding the development of other types, queen of the seas. It is therefore not difficult to estimate the relative power of the fleets of different nations. In fact, a purely engineering estimate of this kind can be made, and the respective ranks of the world's naval powers ascertained. Germany has shown all through the war that she thoroughly appreciated the British naval supremacy. Her fleet has ventured little more than sporadic operations from the well-fortified bases behind Heligoland. It was probably the pressure of public opinion, and not the expectation that she would achieve anything of military advantage, that forced her to send her high-sea fleet into conflict with the British squadrons off Jutland.

If one should examine the course of this battle, which has been represented by lines graphically showing the paths of the British and German fleets, one could easily see how the British imposed their will upon the Germans in every turn that these lines make. It reminds one very much of the herding of sheep, for the German fleet was literally herded on May 31, 1916, from 5:36 in the afternoon until 9 o'clock that night. Admiral von Scheer, however, fought the only action which it was possible for him to fight. It was a losing action, and one which he knew, from a purely mathematical consideration, could not be successful.

Through the very definiteness of this understanding of what constitutes naval strength, Great Britain's navy until recently has remained a great potential force, becoming dynamic for only a few hours at Jutland, after which it returned to that mysterious northern base whence it seems to dominate the seas. Because of the potentiality of these hidden warships, thousands of vessels have traversed the ocean, freighted with countless tons of cargoes and millions of men for the Allies. Even at that psychological moment when the first hundred thousand were being transported to France, Germany refrained from a naval attack which might have turned the whole land campaign in her favor.

To-day, however, the world is awakening to a new idea of sea-power, to a new conception that will have a far-reaching influence on the future development of naval machinery.

Sir Cyprian Bridge has stated that one of the functions of a fleet is the defense of commerce. There is no more important function for a fleet than this. A nation may be subjugated by direct invasion, or it may be isolated from the world by blockade. If the blockade be sufficiently long, and effectively maintained, it will ruin the nation as effectually as direct invasion.

Thus, in the maintenance of a nation's merchant marine on the high seas, its navy exercises one of its most vital functions. There can, therefore, be no naval supremacy for a nation unless its commerce is assured of immunity from considerable losses through the attack of its enemy. It is idle for us to speak of our naval supremacy over Germany, when our navies are failing in one of their most important functions, and when our commerce is suffering such serious losses. The persons best qualified to judge are those who are most anxious regarding the present losses in mercantile tonnage.

While it has been shown that the submersible of to-day, as a fighting machine, is considerably limited, and in no sense endangers the existence of the capital ship, nevertheless in the new huge submersible it seems that the ideal commerce-destroyer has been found. This vessel possesses the necessary cruising radius to operate over sufficient distances to control important routes; it makes a surface speed great enough to run down cargo steamers, and has a superstructure to mount guns of considerable power . It embodies almost all the qualifications of the light surface cruiser, with the additional tremendous advantage of being able to hide by submergence. To be completely successful, it must operate in flotillas of hundreds in waters that are opaque to a?rial observation. Germany has but a limited number of these submersibles, otherwise she would be able to crush the Allied commerce.

The ideal submersible commerce-raider should be a vessel of such displacement that she could carry a sufficient number of large guns in her superstructure to enable her to fight off the attack of surface destroyers and the smaller patrol craft. She should be capable of cruising over a large radius at high speed, both on the surface and submerged. The supersubmersible flotillas should comprise fifty or sixty of these units. The attack on the trade routes should be made by a number of flotillas operating at different points at unexpected times. To-day Germany has concentrated her submarine war particularly in the constricted waters about England. It is here that the shipping is most congested, and therefore the harvest is richest, but it is also easier to protect the trade routes over these limited areas of water by patrols, nets, etc., than it would be to protect the entire trans-oceanic length of the steamship lanes. If the submersible were capable of dealing directly with the destroyer in gun-fighting, a tremendous revolution would take place in the tactics of "submarine swatting." Then it would be difficult to see how the submersible could be dealt with.

Whether the German U-boat campaign succeeds or not will be largely a question of the number of submersibles that the Central Powers can put into service, and to what extent the submersible will be developed during the present war.

German submarines have sunk over 7,250,000 tons of the Allied shipping. In December, 1916, it was stated in the British Parliament that the merchant marine of Great Britain had at that time over 20,000,000 tons. Within the first three months of the unrestricted submarine warfare, 1,100,000 tons of British shipping went to the bottom. At this rate, England would lose 25 per cent of her merchant marine per annum. It is for this reason that the attention of the entire world is concentrated upon the vital problem of the submarine menace. On land, the Central Powers are still holding their ground, but there is a continuous increase of the forces of the Allies which should lead finally to such a preponderance of power as will overwhelm the forces opposed to them. The Allied armies, however, depend for their sustenance and supplies upon the freedom of the seas. The trade routes of the world constitute the arteries which feed the muscles of these armies. Germany is endeavoring to cut these arteries by the submarine. Should she even appreciably limit the supplies that cross the ocean to the Allies, she will bring about a condition that will make it impossible to augment their armies. In this way there will inevitably be a deadlock, which, from the German standpoint, would be a highly desirable consummation.

Obviously, the first method of handling the submarine problem would be to bottle the German undersea craft in their bases. There has been a number of proposals as to how best to accomplish this. It has been stated that the English Navy has planted mines in channels leading from Zeebrugge and other submarine bases; but it is necessary only to recall the exploits of the E-11 and the E-14 of the British Navy at the Dardanelles, to see that it would not be impossible for the Germans to pass in their U-boats through these mine-fields into the open sea. It will be remembered that the E-11 and the E-14 passed through five or more mine-fields, thence through the Dardanelles into the Sea of Marmora, and even into the Bosphorus under seemingly impossible conditions. Yet, in spite of the tremendous risks that they ran, these boats continued their operations for some time, passing up as far as Constantinople, actually shelling the city, sinking transports, and accomplishing other feats which have been graphically described in the stories of Rudyard Kipling. And again, if the mine-fields were placed in close proximity to their bases, it would be comparatively easy for German submersibles of the Lake type, possessing appliances to enable divers to pass outboard when the vessel is submerged, to go out and cut away the mines and thus render them ineffective.

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