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 reflecting local variationCorrect
- C. Compass bearings corrected for deviation
- D. Gyrocompass bearings corrected for gyro error
Why B is correct
The Light List describes the compass rose as having an outer ring showing true bearings and an inner ring showing magnetic bearings, with local variation and annual change noted at the centre. Deviation is a vessel-specific error not printed on the chart rose.