1. To do this it is necessary to correlate the RBI reading with the compass heading . 2. Digital compass headings were superimposed on the imagery and the controller could add verbal comments. 3. We had two on deck in one-hour shifts, one giving compass headings and the other steering. 4. Dials and gauges that can be clicked on set the boat's depth, engine speed and compass heading . 5. Our Global Positioning System came in handy marking coordinates of snorkeling spots and for its compass headings . 6. :The section title uses the word " heading ", by which I'm guessing you mean compass heading . 7. I began to wonder what happened to the lights that I had been using to confirm my compass heading . 8. The bearing plate is rotated to the compass heading and locked, thereby recording the wind direction for future reference. 9. A compass heading of 169 degrees would be due south .-- talk 18 : 01, 16 October 2009 ( UTC) 10. The spotter call out the compass heading of the direction that enemies are in as they come within a certain range.