Describe the basic working principle of GPS including various controls and settings.

Explain various limitations of Radar.

2. List four entries each which are required to be made in the following logs:

Compass Error Log

GPS Log Book

Garbage Log Book

List the factors to be taken into consideration in determining safe speed with operational Radar.

Describe the watch keeping duties of the Duty officer when the ship is at anchor.

List the circumstances under which the Master should be called.

Explain what is meant by risk of collision.

With reference to Rule 10 "Traffic Separation Scheme", define the following:

Separation Lane

Separation Zone

With reference to Rule 10, list the requirements for vessels with regards to the following:

Navigation in areas near the termination ofTSS

Anchoring

6. Define the following:

Visibility

Frost

Dew

Explain land and sea breeze.

List the two types of fronts and draw neat sketches for the same.

8. Explain the formation of the tidal streams and its effect on normal navigation of a ship.

9. Code the following ship's report: 9 Ship: VHAN, position 00°05' N 46°58' course made good past three hours 170° at 10 knots, GMT 16 d.00 h 20 wind 052° estimated at 10 knots.
Visibility 500 metres, Pressure 1008·8 mb, Tendency +3·6 mb, Barograph trace:
Temperature Dry 28·5°C, Wet 23·0°C, Dew pt. 20·8°C, Sea 20·6°C.

Clouds: Sky overcast with a few blue patches. Low clouds 4 oktas, base 600 metres above sea, Cu of strong vertical extent, Ac in chaotic sky, Cc.

Present weather: Visibility poor due to dust in suspension in the air, not raised by wind at or near ship.
Past weather: Thick haze, thunderstorm
Sea: Period 04 seconds, height 0·4 metres
Swell From 2700 period 08 seconds, height 04 metres.