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Source of Data - Extreme Example

Forum - Coastal Navigation - Source of Data - Extreme Example
Module Content - Sea Talks2
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Mike Grasley
Waterdown, ON, Canada
Bareboat Charter Master Level IV
Status: Big Time Sailor
Qualified days: 146
Source of Data - Extreme Example
Posted 2021, Feb 12 22:46
Just to emphasis how old data can be - the official Canadian charts for the south coast of Newfoundland are based on soundings taken by the British Admiralty way back in 1860. Yes, EIGHTEEN SIXTY. Not 1960. So needless to say, one uses those charts with extreme caution.
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