T&T: NAV Mode and Autopilots

[John Baker]

Arild wrote:
   
  <<GOTO means the autopilot simply continues to point the boat towards the
destination waypoint.
Set and drift does not enter into the calculations.>>
   
  This is NOT true.  The GPS does not direct the AP to "home" towards the GOTO point.  When you punch the GOTO button, that point in space is marked and a "route" from that point to the GOTO point is built.  The GPS will "maintain" that route and instruct the AP to do so if it is in the NAV mode.  Based on the above points, SET and DRIFT will be corrected for as the GPS/AP will be maintaining a specific Course Over Ground.
   
  Trawler on,
  John



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