. The railroad and engineering journal . ; area of im-mersed midship section, 665 sq. ft. ; transverse meta-center. 7 ft. above center of gravity. These vessels are to be twin-screw, protected cruiserswith poop and forecastle decks and open-gun decks be-tween, fitted with water-tight decks of 17^ lbs. plating atsides, reduced to 12 lbs. in the center, extending the entirelength of the vessels. This deck is to be below the water-line at the sides 36 in., and all the machinery, magazines,and steering are to be below it. The rig is tobe that of a two-masted schooner, bearing a small sp
. The railroad and engineering journal . ; area of im-mersed midship section, 665 sq. ft. ; transverse meta-center. 7 ft. above center of gravity. These vessels are to be twin-screw, protected cruiserswith poop and forecastle decks and open-gun decks be-tween, fitted with water-tight decks of 17^ lbs. plating atsides, reduced to 12 lbs. in the center, extending the entirelength of the vessels. This deck is to be below the water-line at the sides 36 in., and all the machinery, magazines,and steering are to be below it. The rig is tobe that of a two-masted schooner, bearing a small spreadof canvas. The motive power for each vessel is to be furnished by Vol. LXIII. No. 7.] ENGINEERING JOURNAL. 303 aPI o O •^, PI H O z npoc (/)PI 7i C z H PIO >H PI •z. >. 304 THE RAILROAD AND [July, 1889, two triple-expansion engines of 5,400 , with cylindersof 26i, 39. and 63 in. in diameter and 33 in. strolte. Theengines and boilers are to be placed in separate water-tight compartments. The crank-shatts are to be made in-terchangeable. All framing, bed-plates, pistons, etc., areto be of cast steel. The boilers are to be five in number,made of steel, and designed for a working pressure of 160lbs. They are to be of the return-Hue tubular are to be double-ended and two single-ended. Thelatter are to be used as auxiliaries, but when steaming fullpower they can be connected with the main engines. Thevessels are to attain a speed of 18 knots under forced normal coal-supply will be 200 tons, with a bunkercapacity of 435 tons. The coal will be stored so as to giveall possible protection to the ship. The entire main batteries are to be composed of rapid-fire guns as follows : Two 6-in. rapid-fire hreech-loadingrifles, mounted on fore
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
