This machine was taken in hand in 1899 with the assistance of Mr. P. Y. Alexander. A staff of competent draughtsmen were employed in getting out fully detailed working drawings of different powers. The propellers are 30 feet in diameter revolving in opposite directions mounted on, separate shafts, one inside the other, by this means the necessary reactions for rotation is obtained. The steam engines are below; the engines in this particular design are of somewhat novel type; the bed plate cylinders are connected to one of the shafts, the outer one, and the crank shafts to the inner one, so that we have the engine bed cylinders, etc., revolving in one direction, and the crank shaft in the opposite direction.