This illustrates how the CPA of the danger target will increase with different Own Ship course changes. A 30 degree turn to starboard will also show our red side light and make our intentions clear to the target we are concerned about the most.

Electronic bearing lines are being used here, but manipulating them takes time. When accuracy is not critical, you can save time by picturing in your head, lines on the radar screen.

As you visualize "Te" to a new course bearing, you can use a stright edge to outline the New Relative Motion Line the echo trail will follow.

This shows course changes made at the 6 minute mark.

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