Petrel Compass Problem

[Dirty-Dog]

Setting declination will give you true north. Setting it to zero will give you magnetic north, same as a mechanical compass.

Very true. I also set mine to zero, because that way it matches my mechanical compass.

---------- Post added November 18th, 2015 at 10:42 AM ----------

While that may be technically true, if you are following directions underwater (like a nav course), one should always be on a calibrated compass.

If you're doing it for a nav course, the first step would be to find out if the directions were written based on true north or magnetic.

 

[rhwestfall]

I still didn't see where you have said how much they differ from each other (mechanical and the electronic)....

 

[tcoen]

Hi DiveTech99,

I am sorry about this issue you are having with the compass on your Petrel 2.

If it is drifting in a short time after calibrating, we should investigate. Please contact us by email at support at shearwater.com

Best regards,
Tyler Coen
Shearwater Research

 

[gcarter]

Any update / final outcome?