Manual for Submarine Mining (Classic Reprint)

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Excerpt from Manual for Submarine MiningA submarine mine consists of an explosive charge inclosed in a water-tight case, and a firing device, the whole intended to be submerged in a waterway which it is desired to close against the passage of an enemy's vessels.With respect to the position' of the case containing the ex plosive, submarine mines are of two classes, buoyant and ground.In the buoyant mine, the case contains the explosive and the firing device, and has such excess of buoyancy that it would ¿oat were it not held below the surface by a mooring rope and an anchor. The submergence is such that while the mine would be struck by the hull of a passing vessel, it is not so near the surface as to be seen.Buoyant mines may be planted and operated successfully in water 150 feet deep. They should not, in general, be used where the depth of water is less than 20 feet.In the ground mine, the case contains the explosive and the firing device, and is heavier than the displaced water, it therefore rests upon the bottom and requires no anchor. Ground mines are not used where the depth of water exceeds 35 feet.With respect to the means used to fire them, mines may be classed as mechanical and electrical.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.