The submarine in war and peace; its developments and its possibilities (1918)
Lake, Simon, 1866-1945 · Philadelphia, London, J.B. Lippincott company · leaf 46
used, other methods must be usedthan that just described. One method is to have an anchoror anchors to hold the vessel at the desired depth. If it isdesired to lie at rest off the entrance of the enemys harborto wait for her ships to come out, the submarine proceedsto her station submerged with a… … yj tnaqv; v WHAT THE MODERN SUBMARINE IS her a small amount of negative buoyancy. At the same timeher anchoring weights are paid out until they touch bottom.As soon as they do so water is forced out of the ballast tanksby compressed air until positive buoyancy is restored andthe vessel stops…
Submarines (Ships)
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![An illustration from Catalogue des monuments et inscriptions de l'Égypte antique / publié sous les auspices de S.A. Abbas II Helmi par la direction générale du Service des antiquités [de l'Égypte] ; par J. de Morgan, U. Bouriant, G. Legrain, G. Jéquier, A. Barsanti (1894)](https://img.insideoutlibrary.com/img/200/ia-cataloguedesmonu22egyp-66-150.webp)
