EARLY BRITISH CHARTERING OF THE GREEK SEAS. In the beginning of 19th century,Greek seas were still largely uncharted.British navy,after the foundation of the Admiralty in 1795,started a seriously charting of the Archilago and other areas in Eastern Mediterranean.The first wave of British charts have been published in a pilot by Heather in 1800-1802.This pilot and its charts is very rare, some of these charts are improvements of Roux charts but many are completely new charts covering uncharted before areas. The effort continued by the French after the Napoleonic war and British returned to chart Greece after 1828.Several British expedition in the Greek seas during the 1830s and 1840s produced the famous first British Admiralty Charts of the Aegean published in the late 1840s and early 1850s.These editions are Extremely rare as these fine big charts mostly perished at sea and very few survived. Heather Atlas (with 224 nautical charts, printed in 14 big sheets with 16 charts each one) , complete has appeared only twice in the last 40 years, Greek section starts at the 123rd chart. All the charts are in pairs of two, as has been printed and they are coming from the sea atlas. HEATHER –IONIAN SEA/KORFU (KERKIRA).Four (4) nautical charts of:Avlona (with the island of Sason,then dependent of the Ionian islands),of Kerkira island,of Kerkira town and harbor and of Gulf of Preveza,each one 20x16cm,very good condition,only Kerkira island chart with a tiny inoffensive pinhole (charts 123-124-125-126 from Heather very rare nautical Atlas of Mediterranean),London 1800.