The inhabitants of these islands support themselves by seafaring, pilotage, grazing of cattle and sheep, fishing and a little agriculture, chiefly potato-growing.
Further work fell to the marine department by the act of 1853, which gave it the control of lighthouse funds, and to a certain extent of pilotage.
The trustees are conservators of the river Tawb and parts of Swansea Bay, and the pilotage and lighthouse authority of the district.
This includes pilotage and light dues.
Trinity House of Newcastle was formed in 1536 and regulated pilotage on the Tyne.