Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 445
will hit upon an idea that will settle the sub-marine once for all. Some very clever suggestions have been sentin which we dare not publish here, lest we givea valuable hint to the enemy. But many of the of its ballast-tanks, but it is impossible to regu-late the water ballast so delicately that… … VIEW OF THE AFTER PART OF A TORPEDO. SHOWING THE ENGINE AND AUTOMATIC STEERING-GEAR. And so it is a case of sink or swim. Seldom isenough ballast taken on to make a submarineheavier than the water it displaces, and there-fore, to stay under, it must keep moving and tiltits horizontal rudders to…
Children's literature
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