The Portuguese Cruiser "Adamastor"

1898 Scientific American  
BELGIUM for centuries enjoyed the doubtful dignity of being the cockpit of Europe, and its people are rar from anxious to repeat tbeir previous experiences in this line. It is true that the independence of the Bel gian soil is under international guarantee, but in cases of emergfmcy such safeguards are too likely to prove in exceBent condition. It was ascertained, moreover, torpedo tubes, one forward and two on the broadside that the guns could be trained through 27° in from 25 on the main
more » ... 25 on the main deck. to 30 seconds. Special attention has been devmed to the The conning tower is of steel 2� inches thick. There ready mounting and dismounting of the guns, one of are six boats, one of which is a steam launch. On which Gan, it is found, be removed and replaced in I the quarter deck there is a very elegant stateroom ; the 65 minutes. The cupola can be rotated at the rate of chief corlllnander's bed, drawing and bath rooms; the one complete revolution in 60 seconds, when six men I second commander's bed and bath rooms ; the pantry, are employed to work the turning gear; foul' men, it the chart room, etc. The officers' accommodation is was found, could make a turn in 75 seconds and two aft, but under the main deck; the officers' mess room, which is ne ar the midshipmen's mess room and cabins, extends the full breadth of the ship. The topgallant forecastle is occupied by petty officers' cabins and sailors. Great care was taken in ventilating the ship with natural draught; but besides this, two electric ventila tors, 4 feet in diameter, are provided for use in hot clilllates, and they blow the fresh air not only into every cabin, but also into the store rooms, steering en gine room and magazines. The vessel is propelled by two tri pIe expansion engines designed to develop 4,000 indicated horse power, placed in separate watertight compartments, the high pressure cylinders being for ward; the bed pJates, the cylinder frames, which are of the inverted Y form, as weil as the covers of the cyl inders and valve chests, are of cast stee\. The cylin ders' diameters are: High pressure, 23� inches (0'59 meter); intermediate, 37% inches (0'950 meter); low pressure, 59� inches (1'500 meters). The common stroke is 31� inches (0'800 meter). The main condensers are in the wings; they are cylindrical and built with Muntz sheets; the total combined condensing area is 4,862 square feet. The propellers are of Delta metal, three bladed, 10 feet 11� inches in diameter (3 '340 meters), the projected surface of each propeller being of 30'66 square feet (2'85 m.q.). Steam is supplied by foul' marine sin gle ended boilers placed in separate watertight compart ments ; they are 13 feet 6% inches in diameter and 12 feet 3� inches long, with three Fox's furnaces, each 3 feet 7Ya inches mean diameter. The total heating sur face is 8,823 square feet (8'20 m.q.) ; the total grate area is 262 square feet. The workins-pressure is 160 pounds . per square inch. Foul' ventiilttmg tubes, 39� inches in
doi:10.1038/scientificamerican02261898-18472bsupp fatcat:h4ruhac4fvci3lz4kxt7b6hxhm