Meindert Sprang wrote:
snip
Are there nav packages that control autopilots? All the autopilots I've
seen had their own processors and processed a magnetic heading input.



If your nav package only receives a position and heading from the GPS and
this nav package maintains a route, it can calculate the cross track error
(XTE) and send that info to an autopilot.

That is sort of what I meant or was thinking. The autopilot processes
the NMEA inputs from the heading sensor, GPS, and nav package and then
does the steering. I thought the implication was that there were nav
packages that actually processed the data and steered the boat.

Jack

--
Jack Erbes in Ellsworth, Maine, USA - jacker at midmaine dot com