One of our Furuno GPS units (the DGPS one) has a distance log, visible in one of the alternate displays.
(The main display would be coordinates, but we usually don't need that since we have the other GPS/plotter... so I usually keep the voltage display up, and that's the one that shows distance traveled.)
If not reset, that distance just keeps adding up, so I know we have something like 6900 nm on the boat so far. I record individual trip distances, from that, in our log book.
-Chris
__________________
Chesapeake Bay, USA
|