The growth of steam in navies had been retarded by its application solely to paddle craft, whose wheels and machinery were incapable of protection in action. During the years 1842–43, however, the United States built the sloop-of-war Princeton, of 954 tons. This vessel was the product of the genius of John Ericsson, the ablest marine engineer the world has ever seen. She was the first screw-propelled steam warship ever built, and, in other respects, foreshadowed the advances which were to come. Thus, her machinery was the first to be placed wholly below the water-line beyond the reach of hostile shot; her engine was the first to be coupled directly to the screw shaft, and blowers, for forced draft, were with her first used in naval practice. She was virtually the herald of the modern era.
The Princeton was followed closely by the Rattler, the first screw vessel of the British fleet, and in 1843–44 the French 44-gun frigate Pomone was fitted with propellers. In 1843, also, the English Penelope was the first man-of-war to be equipped with tubular boilers, and the year 1845 was notable for the building of the ill-fated Birkenhead, the first iron vessel of the British fleet. In 1850, when the French constructed the screw line-of-battle ship Napoleon, the English became alarmed, and began with vigor the renovation of their navy with regard to screw propulsion.
France, in 1854, laid the keels of four armored batteries, three of which, forming the first ironclad squadron in history, went into action a year later under the forts of Kinburn in the Crimea. They were of 1600 tons’ displacement, carried 4⅓ inch armor and sixteen 68-pdr. guns, and had a speed of four knots. In 1862, Ericsson launched the famous Monitor, the first sea-going ironclad with a revolving turret, and an “engineers’ ship” from keel to turret top.
THE TURBINIA.
The Civil War found us with a sailing navy, and left us one of steam. Passing over its victories, in which steamers played always the chief part on sea and river, we come to that most notable triumph of Chief Engineer Isherwood, the cruiser Wampanoag of 4200 tons’ displacement. This vessel, phenomenal in her day, steamed in February, 1868, from Barnegat to Savannah, over a stormy sea, in 38 hours. Her average was 16.6 knots for the run, and 17 knots during a period of six consecutive hours—a speed which for 11 years thereafter was unapproached by liner or by warship. In 1879, the British despatch vessel Mercury, of 3730 tons and 18.87 knots, wrested the palm from America; but, in 1893, it was won again for the United States by the triple-screw fliers Columbia and Minneapolis of 7475 tons, with speeds respectively of 22.8 and 23.073 knots. The laurels rest now with the Buenos Ayres, which, though built in England in 1895, flies the flag of Argentina. She has a tonnage of 4500 and a speed of 23.202 knots.
ENGINE OF U.S.S.POWHATAN. A.D. 1849.
PLATE III.
The British ironclad Pallas, completed in 1866, was remarkable for having the first successful naval engines on the compound principle, in which the steam is admitted at high pressure to a small cylinder, and passes thence to a larger one which it fills by its expansion. To Great Britain the world owes also the development of triple expansion, i. e., the use of steam successively in three cylinders. This system was inaugurated in naval engines by the British, in 1885–86, and is now universally employed. Prior to 1879, the boilers of all modern war-vessels had been those of the Scotch type, in which the flame passes through tubes fixed in a cylindrical shell containing water. In that year, however, France began a revolution in the steam generators of navies by equipping a dispatch-vessel with the Belleville tubulous boiler, in which the water to be evaporated is contained within tubes surrounded by flame confined in an outer casing. The water-tube principle, also, bids fair to become of universal application. It has had its most noteworthy naval installation in the British cruisers Powerful and Terrible, of 14,200 tons and 25,886 horse-power, completed in 1895.