Questions & Answers for: Navman depth finder

finder loses its track of depth and speed from time to time. do you know why this might be????? cheers Depth: Could be for a number of reasons, too deep for the sounder - check the manual for it's max

...depth My finder keeps flashing from a low depth to a high depth eg.30ft to 3.4ft Can anyone help please. I had the same problem last time I was out in shallow water (in less than 2 metres of water) ...

...depth finder along with the Navman GPS unit when I purchased my Bayliner Trophy 20Ft. Offshore model. Everything was ok for one year and it has been downhill since then. Losing signal, unbelievable ...

...depth i certain areas; but only grey colour. What are we doing wrong? The image on my fish finder has a ghost like worm going across the screen. It doesn't read structure at all but will give you the ...