A ferry plies across the Danube to the Bulgarian fortress of Nicopolis.
A fall-block is attached to a fixed point; a running-block is movable to and from a fall-block, with which it is connected by two or more plies of a rope.
The load, supported by the lower hook, is raised by hauling on the free end and, neglecting any slight obliquity of the plies of rope, the free end moves six times as fast H L C FIG.
Coracle-fishing is performed by two men, each seated in his coracle and with one hand holding the net while with the other he plies his paddle.
A government steamer runs regularly from Bathurst to McCarthy's Island, and a smaller boat plies on the upper river.
