Podcast
Questions and Answers
A binnacle is primarily used to house which navigational instrument for convenient use?
A binnacle is primarily used to house which navigational instrument for convenient use?
- Steering wheel
- Radio direction finder
- Compass (correct)
- Radar
A chart with a scale of 1:80,000 is best suited for what type of navigation?
A chart with a scale of 1:80,000 is best suited for what type of navigation?
- Sailing chart
- General chart
- Coastal chart (correct)
- Harbor chart
Which of the following scales would be appropriate for a coastal chart, providing detailed navigational information?
Which of the following scales would be appropriate for a coastal chart, providing detailed navigational information?
- Not more than 1:25,000
- 1:100,000
- 1:35,000 (correct)
- 1:500,000
A crew member has fallen overboard on your port side. What immediate action should you take to maximize the chances of a successful recovery?
A crew member has fallen overboard on your port side. What immediate action should you take to maximize the chances of a successful recovery?
What is the purpose of a gyroscope in navigational instruments?
What is the purpose of a gyroscope in navigational instruments?
What scale is most likely to be found on a general chart that is used for voyage planning?
What scale is most likely to be found on a general chart that is used for voyage planning?
For navigating within a harbor, what chart scale is appropriate?
For navigating within a harbor, what chart scale is appropriate?
Why is the Mercator projection considered cylindrical?
Why is the Mercator projection considered cylindrical?
When is phase correction typically applied during celestial navigation?
When is phase correction typically applied during celestial navigation?
What type of position accounts for the effects of leeway and currents?
What type of position accounts for the effects of leeway and currents?
Which essential piece of information must a casualty report for a vessel contain?
Which essential piece of information must a casualty report for a vessel contain?
How is a running fix obtained, especially when only one identifiable object is available?
How is a running fix obtained, especially when only one identifiable object is available?
Who is typically responsible for filing a vessel's sail plan?
Who is typically responsible for filing a vessel's sail plan?
When using a sextant, what does an index error that is 'on the arc' indicate?
When using a sextant, what does an index error that is 'on the arc' indicate?
What type of magnetism is typically associated with a ship's structure?
What type of magnetism is typically associated with a ship's structure?
What environmental variable does a sling psychrometer measure?
What environmental variable does a sling psychrometer measure?
If a star is observed at its lower transit, what line of position is derived from this sight?
If a star is observed at its lower transit, what line of position is derived from this sight?
A vertically striped buoy with white light indicates what?
A vertically striped buoy with white light indicates what?
Under what conditions does a vessel experience 'squat'?
Under what conditions does a vessel experience 'squat'?
When fixing a position, which method provides the greatest accuracy and certainty?
When fixing a position, which method provides the greatest accuracy and certainty?
Flashcards
What is a Binnacle?
What is a Binnacle?
A stand used for housing a compass so that it may be used conveniently.
1:80,000 Chart
1:80,000 Chart
A chart with a scale of 1:80,000 falls into coastal chart category.
1:100,000 Scale
1:100,000 Scale
A coastal chart could have a scale of 1:100,000.
MOB Port Side
MOB Port Side
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What is a Gyroscope?
What is a Gyroscope?
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1:200,000 Scale
1:200,000 Scale
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1:35,000 Scale
1:35,000 Scale
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Mercator Chart
Mercator Chart
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Phase Correction
Phase Correction
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Estimated Position
Estimated Position
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Casualty Report
Casualty Report
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Running Fix
Running Fix
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A responsible person.
A responsible person.
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Sextant Correction
Sextant Correction
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Ship Magnetism
Ship Magnetism
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sling psychrometer
sling psychrometer
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Observation Sight
Observation Sight
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striped buoy
striped buoy
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DGPS Accuracy
DGPS Accuracy
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Squat definition
Squat definition
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Study Notes
- A binnacle houses a compass for convenient use.
- A chart with a scale of 1:80,000 is categorized as a coastal chart.
- A coastal chart can have a scale of 1:100,000.
- If a crew member falls overboard off your port side, immediately put the rudder over hard left.
- A gyroscope is a flywheel in a universal mounting where the axis is free to point in any direction.
- A general chart can have a scale of 1:200,000.
- A harbor chart could have a scale of 1:35,000.
- A Mercator Chart is a cylindrical projection.
- Phase correction is applied to observations of stars.
- A position adjusted for the estimated effects of leeway, tidal stream currents, and surface drift is an estimated position.
- A report of casualty to a vessel must include the name of the owner or agent of the vessel.
- A running fix is a position obtained by taking multiple lines of position from one object at different times and advancing them to a common time.
- A sail plan, including the vessel's itinerary, name, number, and persons aboard, should be filed with a responsible person.
- A sextant haling an index error that is on the arc has a negative correction.
- A ship has permanent magnetism.
- A sling psychrometer is an instrument used to measure relative humidity.
- A star observed at lower transit derives its line of position from a latitude line.
- A vertically striped buoy may be lighted with a white light.
- A vessel will "squat" when it proceeds underway in all depths of water.
- A yellow buoy may mark an anchorage area.
- If a contact remains in the same position relative to you on the radar screen, the contact is on the same course and speed as your vessel.
- An automatic identification system (AIS) transponder transmits and receives information broadcasts on the VHF maritime band.
- The sun is farthest from the Earth at the northern hemisphere during the summer.
- Chart legends printed in capital letters show that the associated landmark is conspicuous.
- The preferred method of position fixing for greatest accuracy and certainty of position is taking a radar range and visual bearing.
- "Squat" is defined as an increase in draft to the point on your ship which is closest to the bottom.
- The DGPS provides accuracy within a range of 10 meters.
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