2ND MATE EXAM ORAL QUESTIONS AND ANSWERS BY CAPT-JACOB - LATEST QUESTIONS
Q. 1) Hogging and sagging ?X
Sagging: If the mean draft is less than the midship draft and vice versa.
Q. 7) Limitations of ECDIS ?X
failure to update charts
Imp. alarms nt set..
over reliance on ecdis
Input from various equipmnts like gyro gps etc nt proper..
1. can be affected by viruses;
2. ENCs does not have worldwide coverage;
3. sudden power failure may hamper navigation in serious stage;
4. if any interface fails it will provide wrong information.
Tidal diamond is a symbol used on chart whch indicates by means of its reference in a table provided on chart;d set n drift of current at a particular time...basically so n so hrs before high water n so n so hrs after high water..interpolation is to be carried out to get set n drift at particular tym..