1911 Encyclopædia Britannica, Volume 8… (1911)
“ In 1896 and subsequent years funds were voted by parliament for the construction of an artificial harbour for naval purposes, having an area of 610 acres, of which 322 acres were to have a depth of not less than 30 ft. at low water. The scheme comprised three enclosing breakwaters—on the west an extension of the Admiralty pier in a south-easterly direction for a length of 2000 ft.; on the south an isolated breakwater, 4200 ft. ”
