Chart Plotter position incorrect

[RUNAMUK]

My Chart Plotter position is off by about 500yds. Furuno Navnet. Any Thoughts?

 

[ocnslr]

Wrong datum.

Fixed altitude set (throws off position).

Defective GPS Receiver. Position is actually determined in the receiver (it's not just an antenna), and not in the head unit.

Call up the page that shows satellites locked on, position, and position error.

Brian

 

[grady23]

Re-check later ---- The Navy has been known to play with the GPS system from time to time in that part of the bay. Talk to Mike down at Buzz's and he'll tell you the same thing.