Popular science monthly . The vessel which we pic-ture would be at least 350 feet, and po.^-sibly 400 feet long, and would be able tocarry about tons of cargo. To carry 5,000 tons at the surface, thevessel must be extraordinarily buoyant. 227 228 Popnlar Science Monthly To attain that buoyancy is the chiefproblem of the designer of a cargo-carrying submarine. Let us see howMr. Lalce has solved this problem. Study the accompanying drawingsand you will notice that Mr. Lakesblockade runner consists of an outerhull and an inner hull. The outer hullresembles that of the ordinary surfacevessel
Popular science monthly . The vessel which we pic-ture would be at least 350 feet, and po.^-sibly 400 feet long, and would be able tocarry about tons of cargo. To carry 5,000 tons at the surface, thevessel must be extraordinarily buoyant. 227 228 Popnlar Science Monthly To attain that buoyancy is the chiefproblem of the designer of a cargo-carrying submarine. Let us see howMr. Lalce has solved this problem. Study the accompanying drawingsand you will notice that Mr. Lakesblockade runner consists of an outerhull and an inner hull. The outer hullresembles that of the ordinary surfacevessel in all essentials. The inner hull is submerged. When the vessel is to rise,the sea water is pumped out. When thevessel is submerged, the cargo-carr^•ingtanks are entirely surrounded by inner hull is pressure-resisting, theouter hull, non-pressure-resisting. Thewater-tight cargo tanks are obviouslyset in compartments which may be re-garded as water-ballast are filled during submergence and. A Submarine Blockade Runner Which Could Newspapers have had much to say of a mysterious Germancargo-carrying submarine which will run the British blockadeand which will bring to New York coal-tar dyes and chemicals,some of which are worth as much as $100 an ounce. Thedifficulty of obtaining suitable engines has not been con-sidered in these accounts. But the designing of a boat, apartfrom the provision of adequate motive power, is not hopelesslydifficult. Simon Lake, one of the foremost American inventorsand builders of submarines, has patented the design hereshown. The cargo is stowed away in air-tight and water- a long cylinder divitled into compart-ments to provide sleeping quarters, amess room, a na\igating cabin, a galley,an engine room and the like. Thecylindrical inner hull is air-tight andwater-tight. The cargo is disposed in vertical tanksl)etwccn the outer and inner hulls. Thecargo tanks are air-tight and water-tightand are filled from the top. Air-ti
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
