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The British admiralty charts are compiled, drawn and issued by the Hydrographic Office. This department of the Admiralty was established under Earl Spencer by an order in council in 1795, consisting of the Hydrographer, Alexander Dalrymple, one assistant and a draughtsman.
Use of colour in British Admiralty charts. Depths which have been measured are indicated by the numbers shown on the chart. Depths on charts published in most parts of the world use metres. Older charts, as well as those published by the United States government, may use feet or fathoms. Depth contour lines show the shape of underwater relief ...
Admiralty chart; Metadata. This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
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English: Nautical chart of the Bay of Islands, Newfoundland, at a scale of 1:74,400. Surveyed by Staff Commander W.F. Maxwell assisted by the officers of the Newfoundland Survey 1880-1. Not current - not to be used for navigation!
English: Nautical charts in the Bass Strait. Surveyed by acting Lieutenant John Murray 1801-1802. Surveyed by acting Lieutenant John Murray 1801-1802. Not current - not to be used for navigation!
English: Nautical chart of the Thames Estuary and North Sea from Kentish Knock and the Naze to The Nore, at a scale of 1:75,000. Not current - not to be used for navigation! Not current - not to be used for navigation!