Volume Ten - Pre-Victorian to the present day - even more aspects - Penarth Dock in 1874. . .

The table of one of these lifts, with its connexions, can scarcely weight less than 10 tons, and taking the weight of of an empty coal wagon as 5 tons, we have thus a useless weight of 15 tons lifted for each 10 tons of useful load as represented by the coal. The efficiency of these lifts is thus at once reduced to 40 per cent. by want of balancing alone, and quite independent of the other losses by friction, &c.

Penarth Docks.

Referring to this map it will be seen that the dock accommodation at Penarth consists of a dock and basin, the former being 2100 ft. long, 370 ft. wide, and giving an area of 17½ acres, while the latter is 400 ft. long, 330 ft. wide, and has an area of 3 acres.