Student
Mike Grasley
Waterdown, ON, Canada
More User info
Bareboat Charter Master Level IV
Status: Big Time Sailor
Qualified days: 148
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.