Podcast
Questions and Answers
What is the position obtained by applying estimated current and wind to your vessel's course and speed?
What is the position obtained by applying estimated current and wind to your vessel's course and speed?
- Estimated position (correct)
- Applied position
- Dead-reckoning position
- Assumed position
What is the barometric pressure equivalent to 29.92 inches of mercury?
What is the barometric pressure equivalent to 29.92 inches of mercury?
- 1010.35 millibars
- 1013.25 millibars (correct)
- 1012.35 millibars
- 1015.25 millibars
What does apparent altitude represent in celestial navigation?
What does apparent altitude represent in celestial navigation?
- Difference in assumed latitude and actual latitude
- Chronometer error and dip
- Inaccuracies in the reading and reference level (correct)
- Double-second difference
Where can sailors find data on the direction and velocity of rotary tidal currents?
Where can sailors find data on the direction and velocity of rotary tidal currents?
What is the speed of sound in water?
What is the speed of sound in water?
On an echo sounder, what is used to mark a specific time of occurrence by drawing a line on the paper?
On an echo sounder, what is used to mark a specific time of occurrence by drawing a line on the paper?
What happens to the speed of sound when the water salinity increases?
What happens to the speed of sound when the water salinity increases?
What is the nature of the beam transmitted by an echo sounder?
What is the nature of the beam transmitted by an echo sounder?
Which of the following is a type of echo sounder transducer?
Which of the following is a type of echo sounder transducer?
What may cause false echoes in an echo sounder?
What may cause false echoes in an echo sounder?
What is the phenomenon in which the axis of an object wobbles when torque is applied?
What is the phenomenon in which the axis of an object wobbles when torque is applied?
What error in a gyrocompass is caused by rapid changes in course, speed, and latitude?
What error in a gyrocompass is caused by rapid changes in course, speed, and latitude?
What publication contains ocean current information for voyage planning from Tokyo to San Francisco?
What publication contains ocean current information for voyage planning from Tokyo to San Francisco?
What do you call the altitude after applying the Dip and index error?
What do you call the altitude after applying the Dip and index error?
A phase correction is applied to observations of:
A phase correction is applied to observations of:
When using GPS, you may expect your position to be accurate 95% of the time within a radius of __________ meters.
When using GPS, you may expect your position to be accurate 95% of the time within a radius of __________ meters.
When navigating using DGPS, you may expect your position to be accurate to within a radius of __________ meters.
When navigating using DGPS, you may expect your position to be accurate to within a radius of __________ meters.
The compass rose on a nautical chart indicates both variation and __________.
The compass rose on a nautical chart indicates both variation and __________.
What is the standard atmospheric pressure in millimeters of mercury?
What is the standard atmospheric pressure in millimeters of mercury?
When a ship's course starts slowly changing to the right at night with the gyro-pilot engaged, what action should be taken FIRST?
When a ship's course starts slowly changing to the right at night with the gyro-pilot engaged, what action should be taken FIRST?
What is the Arctic Circle's latitude in degrees north or south of the Tropic of Cancer?
What is the Arctic Circle's latitude in degrees north or south of the Tropic of Cancer?
What is the automatic device for steering a vessel by receiving control signals from a gyro compass called?
What is the automatic device for steering a vessel by receiving control signals from a gyro compass called?
How long is a nautical mile in feet?
How long is a nautical mile in feet?
What is the interval called between the sun's upper limb being on the horizon and its center being 12 degrees below?
What is the interval called between the sun's upper limb being on the horizon and its center being 12 degrees below?
Which check is NOT part of the physical checks of gyro, azimuth circle, and pelorus?
Which check is NOT part of the physical checks of gyro, azimuth circle, and pelorus?
What is the term for the bending of a wave as it passes an obstruction?
What is the term for the bending of a wave as it passes an obstruction?
Which one is NOT typically found in tables used during voyage planning and navigation?
Which one is NOT typically found in tables used during voyage planning and navigation?
In the IALA Buoyage System, what color configuration represents an East Cardinal Mark?
In the IALA Buoyage System, what color configuration represents an East Cardinal Mark?
Who typically holds responsibility for creating the voyage plan?
Who typically holds responsibility for creating the voyage plan?
What information should the new helmsman know when relieving the helm?
What information should the new helmsman know when relieving the helm?
