Heading Allignment

[Chuck - Raymarine - Moderator]

Q1. Is it normal for the radar to go from in alignment to going out of alignment by performing the "align to GPS".
A1. This is actually an invalid question. The reason is that the radar appears to have not been correctly aligned prior to the having performed the "align to GPS" command. Per the previously referenced FAQ, radar bearing alignment is performed within the Radar application, not the Chart application, prior to performing the heading alignment. When a) the Radar application is configured for Head-Up orientation and b) should the vessel be pointed directly (000 relative) at a distant target, and c) should the radar return from that object fall under the ships heading marker, then the radar bearing is properly aligned. I am suggesting that should you have examined the Radar application, not the Chart application, prior to the actions previously taken, then I believe that you would have actually determined that at the radar beaing was misaligned. Adjustments to heading alignment (typically very small) may then be performed within the Chart application to permit the radar image to properly overlay within the Chart application.

Symptoms such as you have reported would typically have occurred when the installer or operator had attempted to align the radar bearing from within the Chart application by observing the radar overlay.