. The railroad and engineering journal . or the main boilers is41, sq. ft. Each auxiliary boiler is 10 ft. in diameter and 8 ft. 6 , with two furnaces, and has 32 sq, ft. of grate surfaceand sq. ft. of heating surface. The total grate sur-face for auxiliary boilers is 64 sq. ft.; the total heating sur-face is 1,937 sq. ft. All the boilers are constructed of steel for a workingpressure of 160 lbs. The vital portions of the vessel are protected by anarmored deck 4 in. thick on slopes and 2| in. on the fiat ;the space between this deck and the gun-deck will be mi-nutely subdivid
. The railroad and engineering journal . or the main boilers is41, sq. ft. Each auxiliary boiler is 10 ft. in diameter and 8 ft. 6 , with two furnaces, and has 32 sq, ft. of grate surfaceand sq. ft. of heating surface. The total grate sur-face for auxiliary boilers is 64 sq. ft.; the total heating sur-face is 1,937 sq. ft. All the boilers are constructed of steel for a workingpressure of 160 lbs. The vital portions of the vessel are protected by anarmored deck 4 in. thick on slopes and 2| in. on the fiat ;the space between this deck and the gun-deck will be mi-nutely subdivided by coal bunkers and store-rooms ; in ad-dition to these a coffer-dam 5 ft. in width will be workednext to the ships side for the whole length of the the bunkers this will be filled with patent fuel, forminga wall 5 ft. thick against machine-gun fire ; the contentscan also be utilized as fuel in an emergency. Forwardand aft the coal bunkers, the coffer-dam will be filled withsome water-excluding substance similar to In wake of the 4-in. and the machine guns the shipsside will be armored with 4-in. and 2-in. plates. The 6-in. guns are mounted in the open, protected byheavy shields attached to the gun carriages. The accommodations for officers and crew are spacious,well ventilated and lighted. All the most approvedmodern appliances for exhausting vitiated air and for in-candescent lighting by electricity have been incorporatedin the design. The coal capacity is very large, reaching 2,000 tons ; at10 knots speed per hour this will give the vessel an endur-ance of 109 days, or a radius of action of 26,240 knots ; inother words, she will be able to steam around the worldin 109 days without recoaling. In appearance the vessel resembles closely an ordinarymerchantman, the sides being nearly clear of projectionsor sponsons, which ordinarily appear on vessels of war ;she will have two signal masts, which will have no mili-tary tops on them, however. ■fhe function
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
