The Irish Channel from the surveys of Capt. F. W. Beechey, R. N FRS and various officers of the Royal Navy Irish Channel sheet 1

Scale: circa 1:300,000. Northern sheet of two. Four inset plans. Unidified ship's tracks. Blue back cover Insets: 1. Belfast Loch circa 1:150,000; 2. Strangford Narrows circa 1:50,000; 3. Entrance to Lough Larn circa 1:40,000; 4. Peninsular of Cantyre Campbelton Loch circa 1:40,000.