The triple-screw system is a most decided novelty. One of these screws will be placed amidships, or on the line of the keel, as in ordinary single-screw vessels, and the two others will be placed about fifteen feet farther forward and above, one on each side, as is usual in twin-screw vessels. The twin screws will diverge as they leave the hull, giving additional room for the uninterrupted motion upon solid water of all three simultaneously. There is one set of triple expansion engines for each screw independently, thus allowing numerous combinations of movements. For ordinary cruising the central screw alone will be used, giving a speed of about fourteen knots; with the two side-screws alone, a speed of seventeen knots can be maintained, and with all three screws at work, at full power, a high speed of from twenty to twenty-two knots can be got out of the vessel. This arrangement will allow the machinery to be worked at its most economical number of revolutions at all rates of the vessel's speed, and each engine can be used independently of the others in propelling the vessel. The full steam pressure will be 160 pounds. The shafting is made of forged steel, 16-1/2 inches in diameter. In fact, steel has been used wherever possible, so as to secure the lightest, in weight, of machinery. There are ten boilers, six of which are double-ended--that is, with furnaces in each end--21-1/4 feet long and 15-1/2 feet in diameter. Two others are 18-1/4 feet long and 11-2/3 feet in diameter, and the two others, single-ended, are 8 feet long and 10 feet in diameter. Eight of the largest boilers are set in watertight compartments.