The name "Forty Foot" is somewhat obscure. On an 1833 map, the Marine Road (located to the west) was named the Forty Foot Road, possibly because it was wide; the name may have been transferred to the swimming place, which was called the
Forty-Foot Hole in the 19th century. Other accounts claim the name was given by fishermen because it was forty feet (
fathoms) deep, but the water in the area is no deeper than . Others have attempted to link it to the
40th (the 2nd Somersetshire) Regiment of Foot, who supposedly bathed there, but they were stationed at
Richmond Barracks in
Inchicore. ==Use==