screw turbine

One of the, at Alhampton, has had an Archimedes screw turbine installed to generate hydro-electric power.

The Saddleworth system is akin to Archimedes screw turbines which are appearing increasingly in northern upland villages.

Built to look more like a screw turbine than a traditional paddle steamer, Caledonia and her sister Mercury had plating carried around the sponsons.

The Archimedes Screw turbines, supplied by Southeast Power Engineering Ltd, will be ready to operate from November.

For prepulsion the ships would carry 5/600 tons of coal to fuel their 16 coal-fired Yarrow boilers, which combined would give 19,000 horsepower through its three screws turbines.