On May 18, 12:02 pm, "Roger Long" wrote:
Ah, light dawns on Marblehead!

Yesterday, whenever I sat down to look closely at the GPS and fine tune the
course, the boat would wander off five degrees or so. I was telling myself:

"It hasn't been through the calibration routine yet."

"It's going to hunt until I fiddle with the settings."

"It just seems like it's wandering more because I'm looking closely."

Etc., Etc.

I just realize that the Buck knife on my hip must have been about three
inches from the built in flux gate compass just under the fiberglass cockpit
seat!

--
Roger Long

instead of buying new knives move the flux gate to an area away from
gear adrift(in peoples pockets) ect. Or you will be dealing with the
issue everythime someone sits in that cockpit seat.

Joe