The inhabitants of these islands support themselves by seafaring, pilotage, grazing of cattle and sheep, fishing and a little agriculture, chiefly potato-growing.
- Pilotage, lighting and buoying from London Bridge seawards.
The charge of the foreshores belonging to the crown, formerly managed by the commissioners of woods and forests, and the protection of navigable harbours and channels, long under the control of the admiralty, provisional orders under the General Pier and Harbour Acts and under the Pilotage Acts, and the settlement of by-laws made by harbour authorities.
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.
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.