NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: GPS Accuracy Now.
From: Philip Ouvry
Date: 2000 May 02, 18:57 EDT
From: Philip Ouvry
Date: 2000 May 02, 18:57 EDT
For maritime users in small craft a GPS accuracy of 100 metres is more than sufficient. Provided you can find the fairway or safe water buoy at the approaches to ones destination or the entrance to the harbour, it is far safer to navigate by sight (i.e. pilotage) rather than by 'head-down' reference to the GPS. Out at sea an accuracy of one mile is quite sufficient. There are occasions when a greater accuracy would be useful such as an anchor position in a crowded anchorage. There is no real need to know the boat's position to an accuracy of 30 metres or less. Philip Ouvry
