Sea School Navigation General Exam
SEA SCHOOL NAVIGATION GENERAL EXAM NEWEST 2025
COMPLETE 100 CORRECT ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
The depth of the water on a chart is the_______.
a. Vertical distance from the chart sounding datum to the ocean bottom
b. Vertical distance from the chart sounding datum to the bottom, plus the height of tide
c. Average height of water over a specified period of time
d. None of the above
a. Vertical distance from the chart sounding datum to the ocean bottom
A North Hemisphere wind which shifts in a counterclockwise motion is called a_______.
a. Pressure wind
b. Coriolis wind
c. Veering wind
d. Backing wind
d. Backing wind
A vessel's position acquired by using at least three or more bearings are called a_______.
a. Dead-reckoning position
b. Fix
c. Estimated position
d. Running fix
b. Fix
Mean lower low water (MILLW) is the reference plane used for______.
a. Sounding on the U.S. east and west coasts
b. All vertical gulf measurements
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, Sea School Navigation General Exam
c. Heights above water for lights, mountains, etc.
d. Soundings on the U.S. east coast only
a. Sounding on the U.S. east and west coasts
A single line of position combined with a dead-reckoning position results in a(n)_______.
a. Running fix
b. Estimated position
c. Assumed position
d. Fix
b. Estimated position
The sun and moon align twice each month--what type of tides can be expected?
a. Apogean
b. Perigean
c. Spring
d. Neap
c. Spring
A buoy mark with a composite group-flashing light indicates a______.
a. Dredging operation
b. Fishing area only
c. Restricted area
d. Preferred channel
d. Preferred channel
On the U.S. east and west coasts charted depths are taken from______.
a. Means sea level
b. Mean high level
c. Mean low water
d. Mean lower low water
d. Mean lower low water
A weather forecast expects a "backing" wind. In the Northern Hemisphere, this would indicate
that it will_______.
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, Sea School Navigation General Exam
a. Shift in a clockwise manner
b. Shift in a counterclockwise manner
c. Increase in velocity
d. Decrease in velocity
b. Shift in a counterclockwise manner
What type of tides occur when the sun and moon are at right angles (90 degrees) to each
other?
a. Neap
b. Spring
c. Diurnal
d. Semi-diurnal
a. Neap
If lighted preferred-channel buoy will show a_____.
a. Orange light whose characteristic is Morse (A)
b. Composite group-flashing (Morse (A) white light
c. Composite group-flashing (2+1) red or green light
d. Composite group-flashing (2+1) orange light
c. Composite group-flashing (2+1) red or green light
A weather forecast expects a "veering" wind. In the Northern Hemisphere, this would indicate
that it will______.
a. Shift in a clockwise manner
b. Shift in a counterclockwise manner
c. Continue blowing from the same direction
d. Increase in velocity
a. Shift in a clockwise manner
The length of a lunar day is______.
a. The same length of a solar day
b. About 10 minutes longer than the solar day
3|Page
SEA SCHOOL NAVIGATION GENERAL EXAM NEWEST 2025
COMPLETE 100 CORRECT ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
The depth of the water on a chart is the_______.
a. Vertical distance from the chart sounding datum to the ocean bottom
b. Vertical distance from the chart sounding datum to the bottom, plus the height of tide
c. Average height of water over a specified period of time
d. None of the above
a. Vertical distance from the chart sounding datum to the ocean bottom
A North Hemisphere wind which shifts in a counterclockwise motion is called a_______.
a. Pressure wind
b. Coriolis wind
c. Veering wind
d. Backing wind
d. Backing wind
A vessel's position acquired by using at least three or more bearings are called a_______.
a. Dead-reckoning position
b. Fix
c. Estimated position
d. Running fix
b. Fix
Mean lower low water (MILLW) is the reference plane used for______.
a. Sounding on the U.S. east and west coasts
b. All vertical gulf measurements
1|Page
, Sea School Navigation General Exam
c. Heights above water for lights, mountains, etc.
d. Soundings on the U.S. east coast only
a. Sounding on the U.S. east and west coasts
A single line of position combined with a dead-reckoning position results in a(n)_______.
a. Running fix
b. Estimated position
c. Assumed position
d. Fix
b. Estimated position
The sun and moon align twice each month--what type of tides can be expected?
a. Apogean
b. Perigean
c. Spring
d. Neap
c. Spring
A buoy mark with a composite group-flashing light indicates a______.
a. Dredging operation
b. Fishing area only
c. Restricted area
d. Preferred channel
d. Preferred channel
On the U.S. east and west coasts charted depths are taken from______.
a. Means sea level
b. Mean high level
c. Mean low water
d. Mean lower low water
d. Mean lower low water
A weather forecast expects a "backing" wind. In the Northern Hemisphere, this would indicate
that it will_______.
2|Page
, Sea School Navigation General Exam
a. Shift in a clockwise manner
b. Shift in a counterclockwise manner
c. Increase in velocity
d. Decrease in velocity
b. Shift in a counterclockwise manner
What type of tides occur when the sun and moon are at right angles (90 degrees) to each
other?
a. Neap
b. Spring
c. Diurnal
d. Semi-diurnal
a. Neap
If lighted preferred-channel buoy will show a_____.
a. Orange light whose characteristic is Morse (A)
b. Composite group-flashing (Morse (A) white light
c. Composite group-flashing (2+1) red or green light
d. Composite group-flashing (2+1) orange light
c. Composite group-flashing (2+1) red or green light
A weather forecast expects a "veering" wind. In the Northern Hemisphere, this would indicate
that it will______.
a. Shift in a clockwise manner
b. Shift in a counterclockwise manner
c. Continue blowing from the same direction
d. Increase in velocity
a. Shift in a clockwise manner
The length of a lunar day is______.
a. The same length of a solar day
b. About 10 minutes longer than the solar day
3|Page
