USCG Exam PracticeCompass variation and deviation; T-V-M-D-C
On a nautical chart, the compass rose displays two concentric rings. What information is found on the inner ring?
- A. True bearings referenced to geographic north
- ✓ Magnetic bearings with local variation noted at the centreCorrect
- C. Gyrocompass bearings corrected for precession
- D. Relative bearings measured from the vessel's head
Why B is correct
The compass rose prints true bearings on the outer ring and magnetic bearings on the inner ring, with the local variation and annual change noted at the centre. Gyrocompass and relative bearings are not depicted on the compass rose.