Antigua Plans: Nonsuch, Mamora, Falmouth & English Harbours - IOLAIRE CHARTS Imray Iolaire charts are printed in color and published in two sizes, 64 X 90 cm (25" X 35-1/2") and 64 X45 cm (25" X 17-3/4"). Based on official surveys, extra information for the yachtsman has been incorporated from Street's surveys & notes. Each chart has large-scale insets of the various important harbors and anchorages.