This is all sound enough, and in fact the U-boats have only succeeded in killing 126 men out of the first million landed from America. But the argument of Admiral von Holtzendorff does not explain the official assurances by which the German public was deceived for more than a year, and it only partially explains the ill success of the U-boats. That could only be fully done by considering the offensive (or offensive-defensive) action of war-ship against submarine--which will be touched upon presently. The record of the ‘bag’ made during the War by our own submarines has never yet been published in a complete form. Yet it is a most striking one, and ought effectually to remove any impression that the German Submarine Service is in any way superior--or even equal--to ours. In three years of war our boats sank over 300 enemy vessels. We lost, of course, many more; but when it is remembered that we were offering to our enemies every week more than four times as many targets as they offered us during the whole three years, it will be admitted that the comparison is not one to give them much ground for satisfaction. At present, however, this general comparison is not the one which we wish to make--we are concerned now with attacks on war-ships, or armed forces, and not on mercantile shipping. The greater part of our record is made up of such attacks, and it is now possible to give a short summary of them. There have been, during this War, practically only three hunting-grounds where British submarines could hope to meet with enemy war-ships, transports, or supply ships. These are the North Sea, the Baltic, and the Dardanelles or Sea of Marmora. Of the work done by our submarines in the Baltic and Dardanelles we shall have separate accounts to give in later chapters. For the present, it is enough to tabulate the results. In the Baltic the bag included, besides a large number of steamers (some carrying iron ore for military use), the following war-ships: three destroyers, three transports, one old battleship or cruiser, one light cruiser, and one armed auxiliary. In the Dardanelles or Sea of Marmora were sunk or destroyed the following, besides a very large number of ships with stores or provisions for the troops in Gallipoli: two battle-ships, four gun-boats, one armed German auxiliary, seven transports, three ammunition ships and one ammunition train, destroyed by gunfire. We may add, as a note to these two parts of our record, that the work was done, not by a large number of submarines issuing in relays from a home base close at hand, and equipped with every kind of facility for repairing defects or relieving tired crews, but by an almost incredibly small number of boats, working far from their base, in closed waters, and under difficulties such as no German boat has ever successfully attempted to face.