Miscelleneous

# Navigational Oral (FUNCTION – 01)

Functioning of DGPS ?

 1 How  gyro works  above 70? 2 how  magnetic  compass  woks in high lat? 3 what do if both not working properly in high lat? 4 why no TRS in south atlantic? 5 Tidel and frontal depression? In atmospheric pressure which creates a depression ,the atmospheric moisture forms clouds, which releases massive amount of heat causing formation of thunderstorms. 6 Crossing situation, give way v/l on port bow with distance 3 miles, you stand on action?  determine risk of collision and take action, tell him the full procedure how you determine risk of collision exists or not. 7 Same situation in RV ? determine risk of collision and reduce speed ,take all way off ? 8 Same situation radar not working? reduce speed, stop ship and wait for the v/l to pass ? 9 Sailing vessel aground light ,as per which rule, positioning of light? 10 Magnetic latitiude, lot of cross question on it, including dip ,geo latitude , he asked me draw? 11 why star rises 4 minutes early each day, lot of cross question? 12 why position  line is perpendicular to azimuth.? (explained with diagram, asked  to define of every term i was using) 13 what is harmonic constant in detail ? 14 Situation no risk of collision, then restricted visibility and radar FAILURE? 15 Position line and position circle? 16 what are Principle of LRIT? 17 ROR  situation – in RV , vessel crossing from port to stbd 18 What is Tide and Tidal stream? 19 There is a vessel of 3 miles on the two point of ur vessel? Action? 20 If thick rain started and visibility reduced,Action? 21 Why ETA used? In which it is applied? 22 Why TRS forms? It generally forms over a warm seas,the moisture and warm air rises causing drop ? 23 Magnetic  Compass Error correction? 24 what is significance of passage planning ? 25 what are Synoptic Chart? 26 you are approaching to Gibraltar from atlantic, Your vessel drifting towards land ,your action? 27 Sailing vessel aground , which all lights? 28 Fog signal listened in RV, action? 29 Rule 19 – No radar, fog signal heard fwd of beam. dense fog, what action? 30 What is ocean current? What are causes of ocean currents? 31 What is orthomorphic projection? 32 What is the correction, how can it be corrected ?. 33 what is Magnetic compass correction? 34 what are chart projections? 35 ETA components strength requirements (check latest amendments)? 36 Principles of bridge team management? 37 Different ways to find out deviation in higher latitudes? 38 What is directional gyro? 39 what is inertial gyro? 40 what is ship handling, current towards berth, direction perpendicular to berth, berth the vessel? 41 lights for sailing vessel with wind and without wind? 42 you are in 50N lat , your magnetic  compass is erratic ,choppy sea, wind force 6,gyro not working ,how will u steer a course?