General lighthouse authority

A general lighthouse authority (GLA) is one of three agencies primarily responsible for aids to navigation in the United Kingdom and the Republic of Ireland. They are divided into regions as follows: Trinity House: England & Wales, Channel Islands and Gibraltar Northern Lighthouse Board: Scotland and the Isle of Man Commissioners of Irish Lights (the C.I.L.): the whole of Ireland A local lighthouse authority (LLA) is a port, harbour, or other party providing navigational aids in a locality as part of its facilities.

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