Thanks dan & Gordon
You were both correct, this time I found the conversion Gordon suggested GPX XML and it converted to a GPX file. This imported into OpenCPN 2.3.714 through Route
Manager and has Imported all Waypoints and Tracks. I used GPSBabel-1.4.2 to convert DATA.USR to .GPX format.
dan in my post I was trying to say I could not find right format, and it appeared when converting to text it changed positions. Plus TXT file would not Import, to check if marks were correct.
The great urgency I had was, the second last trip out the Lowrance LXC-16 failed and
would only leave colored vertical lines on screen
. As I had 10 years or marks which had never been backed up I was devastated. The next day out it started up and I backed up all points before turning unit off. A big learning
A big THANKS
to Gordan & dan for the HELP