OUPV Navigation General Study Guide 2025/2026
Exam Questions and Detailed Answers | Get it
100% Correct Answers
1. C Little or no movement of water: The term "Slack Water" during a tidal change means ?
A Range of tide
B Plane of tide
C Little or no movement of water
D Reversing of the tide
2. C Maintain your current course: When entering a channel from the sea and decide to check your compass
heading you steer on a pair of range lights and find the upper light is in line with the lower light you should :
A Come left
B Come right
C Maintain your current course
D Wait until the lights are no longer in a vertical line
3.D Composite group flashing (2+1): You observe a buoy mark having green and red
horizontal bands it will have a light characteristic of :
A Interrupted quick flashing
B Morse (A)
C Quick flashing
D Composite group flashing (2+1)
4.D Deflected by the earth's rotation (Coriolis Effect): The direction of the earth's surface
wind is :
A Directed from high pressure toward high pressure
B Deflected from the sun's solar energy
C Directed from low pressure toward high pressure
D Deflected by the earth's rotation (Coriolis Effect)
5.C Fixed known objects on shores (correct): Your vessel's position should be plotted
using bearings of :
,A Buoys close at hand
B Buoys at a distance
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, C Fixed known objects on shore
D None of the above
6. A Preferred-channel buoy: Which buoy may be lettered and NOT numbered ?
A Preferred-channel buoy
B Green unlighted can buoy
C Red lighted buoy
D Green can buoy
7.C Higher highs and lower lows than normal: Spring tides will produce :
A Unpredictable currents
B Unpredictable tide changes in the spring of the year
C Higher highs and lower lows than normal
D Lower lows and higher lows than normal
8.B The buoy may not be in the charted position: You must assume when using a buoy as
an aid to navigation :
A The buoy should be considered to always be in the charted location.
B The buoy may not be in the charted position.
C If lighted, the buoy should be considered to be in the charted location.
D The buoy should be considered to be in the charted position if it has been freshly painted.
9. C Weekly: The "Local Notice to Mariners" provides corrections of local nature to charts and is published :
A Quarterly
B Monthly
C Weekly
D Daily
10. D Vertical movement of water: The term "Tide" means " :
ASalinity content of the water
B Mixing of salt and fresh waters
C Horizontal movement of the water
D Vertical movement of the water
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Exam Questions and Detailed Answers | Get it
100% Correct Answers
1. C Little or no movement of water: The term "Slack Water" during a tidal change means ?
A Range of tide
B Plane of tide
C Little or no movement of water
D Reversing of the tide
2. C Maintain your current course: When entering a channel from the sea and decide to check your compass
heading you steer on a pair of range lights and find the upper light is in line with the lower light you should :
A Come left
B Come right
C Maintain your current course
D Wait until the lights are no longer in a vertical line
3.D Composite group flashing (2+1): You observe a buoy mark having green and red
horizontal bands it will have a light characteristic of :
A Interrupted quick flashing
B Morse (A)
C Quick flashing
D Composite group flashing (2+1)
4.D Deflected by the earth's rotation (Coriolis Effect): The direction of the earth's surface
wind is :
A Directed from high pressure toward high pressure
B Deflected from the sun's solar energy
C Directed from low pressure toward high pressure
D Deflected by the earth's rotation (Coriolis Effect)
5.C Fixed known objects on shores (correct): Your vessel's position should be plotted
using bearings of :
,A Buoys close at hand
B Buoys at a distance
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, C Fixed known objects on shore
D None of the above
6. A Preferred-channel buoy: Which buoy may be lettered and NOT numbered ?
A Preferred-channel buoy
B Green unlighted can buoy
C Red lighted buoy
D Green can buoy
7.C Higher highs and lower lows than normal: Spring tides will produce :
A Unpredictable currents
B Unpredictable tide changes in the spring of the year
C Higher highs and lower lows than normal
D Lower lows and higher lows than normal
8.B The buoy may not be in the charted position: You must assume when using a buoy as
an aid to navigation :
A The buoy should be considered to always be in the charted location.
B The buoy may not be in the charted position.
C If lighted, the buoy should be considered to be in the charted location.
D The buoy should be considered to be in the charted position if it has been freshly painted.
9. C Weekly: The "Local Notice to Mariners" provides corrections of local nature to charts and is published :
A Quarterly
B Monthly
C Weekly
D Daily
10. D Vertical movement of water: The term "Tide" means " :
ASalinity content of the water
B Mixing of salt and fresh waters
C Horizontal movement of the water
D Vertical movement of the water
2/20
