Gary wrote in
news:EN3Pf.111703$H%4.77487@pd7tw2no:


How does putting a GPS fix on the chart help you forget your boat's
reaction to weather, currents (it tells you them), DRing etc? If
anything it proves your estimated position.



Sure it tells you what, but it doesn't tell you why. Hey, good short term
plan, the GPS says steer 270..... course, this could mean you'll fight the
currents/winds , rather than use them: drive over that rock.....
GPS is a tool and all too many consider it the ultimate tool. It's not and
all too many get into the habit of forgetting to question the "why" of what
it says.
BTW, the GPS doesn't tell you your boat's reaction to weather, currents.
It's telling you your reaction to the cumulative conditions you are in.
YOU have to figure out your boats reactions to weather, currents.


otn