I did my best getting some shots of what is happening. My original course is the outlined set course line visible in this first pic. I was alerted to smoke on the horizon. At the time of this shot I had turned the boat to head toward the smoke. My first X is drawn

The next shot is where I drew my bearing line based on the report (NOT the contact drawn on the map. I am ignoring that for this exercise)

Two minutes later I draw my next line

Then the next two minutes I do the same.

As can be seen the lines are fanning out, they are not converging. The target was not going fast. I was drawing the lines out to the edge of the bearing indicator, and the termination mark in no way represented the contact course.
I wonder what is going wrong here.