The Galway Pilotage District includes "the waters of the Bay of Galway within an imaginary line drawn from Golam Head to the Western Point of the Aran Islands and thence to Hags Head in County Clare. The Pilotage area is divided into the outer Pilotage district where Pilotage is optional and the inner Pilotage district where Pilotage is compulsory, the latter district being from the waters of the bay of Galway which lie Eastwards of an imaginary line drawn from Kilcolgan Point to the point of intersection of latitude 530 14.70’N and longitude 0090 03.45’W, "and thence to the Western end of the dock gates at Galway, and including the waters of Galway Dock.