Interview Questions MMSI candidate 2

Questions on HR was very less they only asked me Technical

1. Fav subject
2. Navigational equipment on the bridge.
3. How to find the Position of a ship.
4. GPS.
5. If GPS fails -what will you do.
6. Types of compass.
7. Why gyrocompass.
8. Variation and Deviation in detail, they asked many questions in different ways to confuse me.
9. Why Variation is E-W?
10. What is Sextant?
11. How to use Sextant?
12. When to use Sextant.
13. ROR
    1. rule 19
    2. rule 5
    3. rule no.9 uses
14. When you maintain lookout what all things you have to see?
15. What is TPC? Explain it.
16. What is FWA
17. DWA