1911 Encyclopædia Britannica, Volume 21… (1911)
“ It is 2900 ft in length, has a minimum depth of 26 ft, and is furnished with every modern appliance for the export of coal, of which from 20,000 to 30,000 tons can be stored in the sidings near by. The Penarth-Ely tidal harbour has a water area of 55 acres with a minimum depth of 20 ft., and a considerable import trade is carried on here mainly by coasting vessels, but as only one of its sides has wharves (about 3000 ft. along) scarcely more than 5% of the total shipping of the port is done here It has commodious warehouses, also tanks to hold about 6000 tons of oil. ”
