NAV 1 Echo Sounder Week 4 S1

Froggy Jumps

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Depth and UKC checks

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Jun Bagsit

Philippines

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NAV 1 Echo Sounder Week 4 S1


Froggy Jumps NAV 1 Echo Sounder Week 4 S1Version en ligne Depth and UKC checks par Jun Bagsit 1 1. A vessel is preparing to enter a shallow harbor. Before relying on the echo sounder, which action best ensures reliable depth information? a C. Depend only on the nautical chart. b B. Properly set, operate, and adjust the echo sounder before entering shallow water. c A. Increase the vessel's speed to obtain more frequent readings. 2 2. A vessel has a draft of 9.0 meters, and company policy requires a UKC of 1.2 meters. What is the minimum required water depth? a A. 8.8 m b C. 10.2 m c B. 9.0 m 3 3. Why should bridge officers verify the available depth using both the chart and the echo sounder? a B. Because echo sounders replace charts. b A. Because either source alone may not provide sufficient confirmation for safe navigation. c C. Because charts automatically update the echo sounder. 4 4. A company requires a UKC equal to 10% of the vessel's draft. If the draft is 11 meters, what UKC is required? a A. 0.9 m b B. 1.0 m c C. 1.1 m 5 5. Why is determining the ship's draft the first step in calculating safe water depth? a D. Draft measures water temperature. b A. Draft determines the vessel's displacement. c B. Draft represents the deepest part of the vessel below the waterline. 6 6. Why should echo sounder information be continuously monitored during coastal navigation? a A. Water depth can change unexpectedly due to seabed features and tidal conditions. b C. It measures vessel speed. c B. It determines wind direction. 7 7. Why is obtaining reliable echo sounder information especially important in confined waters? a D. Radar becomes unusable. b B. Small depth changes can significantly affect navigational safety. c A. Confined waters usually have stronger radio signals. 8 8. A reference depth of 170.5 fathoms is equivalent to approximately: a A. 900 feet b C. 1023 feet c B. 950 feet 9 9. Which statement best summarizes the purpose of DBK? a A. It measures the total depth from sea surface. b D. It measures wave height. c B. It indicates the water depth available beneath the vessel's keel. 10 10. Which statement best distinguishes DBK from reference depth? a B. Reference depth includes the vessel's draft, while DBK measures the water beneath the keel. b C. DBK includes tidal height only. c A. They are always identical.

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NAV 1 Echo Sounder Week 4 S1

Froggy Jumps

À propos de cette activité

Créé par

Téléchargez la version pour jouer sur papier

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NAV 1 Echo Sounder Week 4 S1Version en ligne

par Jun Bagsit

1. A vessel is preparing to enter a shallow harbor. Before relying on the echo sounder, which action best ensures reliable depth information?

2. A vessel has a draft of 9.0 meters, and company policy requires a UKC of 1.2 meters. What is the minimum required water depth?

3. Why should bridge officers verify the available depth using both the chart and the echo sounder?

4. A company requires a UKC equal to 10% of the vessel's draft. If the draft is 11 meters, what UKC is required?

5. Why is determining the ship's draft the first step in calculating safe water depth?

6. Why should echo sounder information be continuously monitored during coastal navigation?

7. Why is obtaining reliable echo sounder information especially important in confined waters?

8. A reference depth of 170.5 fathoms is equivalent to approximately:

9. Which statement best summarizes the purpose of DBK?

10. Which statement best distinguishes DBK from reference depth?