USCG Exam PracticeThree-bearing fix and cocked-hat triangle
A navigator obtains a fix using marine radar by acquiring a single charted target. Which two measurements from the radar are used to establish this fix?
- A. Speed and heading of the target
- ✓ Range and bearing to the targetCorrect
- C. Relative bearing and time of observation
- D. Pulse length and antenna rotation rate
Why B is correct
Bowditch Ch. 13 §1301 states that range and bearing to a target give a direct fix when using marine radar. The radar provides a plan-view picture of surrounding targets, and the combination of range and bearing to a charted object establishes the vessel's position.
Cited:Bowditch Ch. 13 §1301