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Title: Admiralty Surveys including contract surveys to Admiralty specifications to 31st March 1986 [Go to resource]
Description: Scale: 1:1,500,000. ?? Printed chart of the British Isles. Colour coded to show different sounding methods used from 1840 (lead line) to 1986 (echo sounder and modern sonar) This record was added as part of the 2009-2010 pre 1900 charts transcription project. Publisher: "http://collections.rmg.co.uk/" Source: Royal Museums Greenwich Identifier: http://collections.rmg.co.uk/collections... Go to resource More Like this...
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