1952 to 1970 Thames Estuaryby in Sea Charton Posted on Variants of 1934 chart. 1952 Admiralty Chart No 1975 Kentish Knock and the Naze to The Nore, Published 1934.jpg – Wikimedia Commons 1953 :Admiralty Chart No 1610 North Foreland to Orfordness, Published 1953.jpg – Wikimedia Commons 1970 Admiralty_Chart_No_1610_North_Foreland_to_Orfordness%2C_Published_1953.jpg
