. American engineer and railroad journal . displacement with anormal load is 2,000 tons. The ship has twin screws, eachdriven by a triple-expansion engineof the vertical inverted type, havingcylinders 26J2 in., 39 in. and 63 diameter and 26 in. stroke. Theengines are expected to develop5,400 , with 160 lbs. boilerpressure and running at 185 revolu-tions. There are three double-endedboilers 11 ft. 8 in. in diameter and18 ft. 8 in. long, and two single-ended boilers 11 ft. 8 in. in diameter and 9 ft. 2 The forced draft is on the closed ash-pit sys-tem. The coal bunkers will ho
. American engineer and railroad journal . displacement with anormal load is 2,000 tons. The ship has twin screws, eachdriven by a triple-expansion engineof the vertical inverted type, havingcylinders 26J2 in., 39 in. and 63 diameter and 26 in. stroke. Theengines are expected to develop5,400 , with 160 lbs. boilerpressure and running at 185 revolu-tions. There are three double-endedboilers 11 ft. 8 in. in diameter and18 ft. 8 in. long, and two single-ended boilers 11 ft. 8 in. in diameter and 9 ft. 2 The forced draft is on the closed ash-pit sys-tem. The coal bunkers will hold 200 tons, and extra bunkersare provided so that 435 tons can be carried. With thelatter supply the cruising range is 8,950 knots at a lo-knotspeed. The contract speed with full power is 17 knots anhour. The armament carried will consist of two6-in. and eight4-in. rapid-fire guns. The secondary battery will includefour 6-pdr. and four 3-pdr. rapid-fire guns and two 37mm. ( in.) revolving cannon. There will also be sixtorpedo GUNBOAT MACHIAS, UNITED STATES NAVY. and LAUNCH OF THE MACHIAS. The third launch of the month was of gunboat No. 5,which was successfully launched from the yard of the Bath Vo*. IJCVI, No. I.] T ENGINEERING JOURNAL. 33 Iron Works, at Bath, Me., on December 8, 1891, in thepresence of a large assembly. This ship, which has lieen named the Afac/iias, is oneof two vessels the construction of which was authorizedby Congress in 18S9. The contract was let to the BathIron Works in April, 1890, that company having bid for bothships ; the contract price was $637,000. No. 6, whichwill be a duplicate of No. 5, will be launched early in theyear, and both ships will be ready for service early inthe summer of 1892. The Mac/lias is a steel gunboat of the following dimen-sions : Length on load water-line, 190 ft. ; beam, 32 ft. ;mean draft, 12 ft. ; displacement, 1,050 tons. She hasno armor ; but the engines and magazines are protectedby coffer-dams filled wit
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
