Fishing Vessel Skipper.

NAVIGATION & NAVIGATIONAL AIDS

MAGNETIC COMPASS:
01. Why magnetic compass is not showing accurate heading when rolling but no rolling showing accurate heading?
02. When would you adjust and check the performance of magnetic compass
03. What are the care and maintenances of magnetic compass?
04. What is the suitable or ideal position of setting a magnetic compass in a fishing vessel?
05. What factors to be considered for adjustment of magnetic compass?
06. Why compass does not work at polar region?
07. Why the compass error is checked when/after major alteration of course?
08. Why regular comparison of standard compass, steering compass and gyro compass?
09. Why the compass errors are checked regularly?
10. Why comparison of gyrocompass, Standard compass and Standard magnetic Compass?

GRYO COMPASS.

1. State the meaning of Tilt, Drift, Precession, Control, Damping and Torque in connection with Gyro compass?
2. Describe how a free gyroscope turned into a Gyro Compass (Conversion of a free Gyro to a Gyro compass)?
3. What are the errors of Gyro compass? And how can you minimize them?
4 State the care and maintenance of Gyro compass?
5. List the setting or adjustment of gyro compass while in used or running?
06. How/What corrections for speed and latitude are applied to a Gyro Compass?

ECO SOUNDER.
1. List the false ethos of echo sounders. How it will be minimized?
2. Write the principal operation of echo sounder
3. What is the error of Error of Echo sounder?

GPS
1. Explain why GPS position can not be plotted on Navigational chart?
2. What is the principle of DGPS? And accuracy expected?
3. How GPS accuracy down grade?
4. What accuracy obtains of GPS?




SEXTANT.
01. What is sextant? Write the principles of sextant?
02. Describes the errors of sextant?
03. Write the care and maintenance of sextant?

RADAR
01. Draw the Block diagram of marine Radar?
02. How would you determine the accuracy of fixing by Rang Ring and Variable Range marker?
03. What Factors do the range accuracy depend?
04. List the false echoes on the Radar display?
05. Describe the various errors of marine Radar?
06. Describe various method of position fixing by Radar during coastal navigation?
07. How rain clutter affected a radar target when the target is before, within and beyond rain?
AUTO PILOT.
01. List the adjustment controls fitted with an auto pilot and state the use of each.
02. When and how auto pilot should be tested?
OTHERS.
01. Write principles of Doppler Log.
02. Write short notes on:
1. Weekly notice to mariners
2. Cumulative admiralty Notice to Mariners.
3. Annual Summary of Admiralty Notice to mariners.
4. VDR.
5. AIS
6. Ships security Alert System.
7. ISPS Code
8. PSC
9. ISM
10. CSR.(Continuous Synopsis Record.)


03. Describe the relationship between tide and Phases of The Moon?
04. What is the danger of placing implicit reliance of floating navigational aids?
05. Write the principle of electro magnetic Speed Log.
06. What is ambiguity? Describe with sketch.
07. What is M.P.? Describe with suitable Sketch.
08. What is plane sailing? Describe with suitable Sketch.



MARKS DISTRIBUTION ANALYSIS.
1. MATH.
a. Intercept/Long by chronometer.
b. Great circle sailing/Mercator Sailing.
c. Steller/Staggered observation
d. Lat by Meridian/Ex-meridian altitude.


2. CHART WORK.
I. Passage planning.
II. Current and Lee way.
III. Tides. (Primary/Secondary port.)


3. Navigational Aids:
A. Radar.
B. Echo Sounder.
C. GPS.
D. Magnetic Compass.
E. Gyro Compass.
F. Sextant.
G. Auto Pilot.


4. OTHERS.
i. Doppler Log.
ii. Relationship between Tide and Moon.
iii. Publications
iv. ISPS Code.
v. ISM, PSC, VDR, CSR.