Podcast
Questions and Answers
Which of the following methods is NOT used by a ship to determine its position?
Which of the following methods is NOT used by a ship to determine its position?
- Radar
- Sonar (correct)
- Decca
- GPS
When would a ship need to know the under-keel clearance and depth of water?
When would a ship need to know the under-keel clearance and depth of water?
- When it is near the mouth of a river
- When it is approaching the port
- When it is in a well-surveyed area (correct)
- When it is crossing over a bar
What is the purpose of checking the depth of water with an echo sounder?
What is the purpose of checking the depth of water with an echo sounder?
- To navigate in poorly surveyed areas
- To determine the ship's position
- To avoid running aground
- To ensure the depth matches the chart (correct)
Which of the following is a danger faced by a ship?
Which of the following is a danger faced by a ship?
Flashcards
Position Determination Methods
Position Determination Methods
Techniques used by ships to find their location at sea.
Under-Keel Clearance
Under-Keel Clearance
The vertical distance between the ship's keel and the seabed.
Echo Sounder Purpose
Echo Sounder Purpose
Ensure that the measured water depth aligns with navigational charts.
Danger of Running Aground
Danger of Running Aground
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