OUPV Navigation General Study
Guide Exam 2025 Questions and
Answers
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
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
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
,C Maintain your current course
D Wait until the lights are no longer in a vertical line
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)
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)
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
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
,C Fixed known objects on shore
D None of the above
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
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
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.
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 3
, D The buoy should be considered to be in the charted position if it has been freshly
painted.
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
D Vertical movement of water - ✔✔The term "Tide" means " :
A Salinity content of the water
B Mixing of salt and fresh waters
C Horizontal movement of the water
D Vertical movement of the water
B Never rely on a floating buoy to maintain its exact position - ✔✔When plotting a
voyage you should :
A Rely on a buoy to be on station as charted
B Never rely on a floating buoy to maintain its exact position
C Rely on a buoy to show proper light characteristics
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 4
Guide Exam 2025 Questions and
Answers
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
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
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
,C Maintain your current course
D Wait until the lights are no longer in a vertical line
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)
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)
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
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
,C Fixed known objects on shore
D None of the above
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
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
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.
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 3
, D The buoy should be considered to be in the charted position if it has been freshly
painted.
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
D Vertical movement of water - ✔✔The term "Tide" means " :
A Salinity content of the water
B Mixing of salt and fresh waters
C Horizontal movement of the water
D Vertical movement of the water
B Never rely on a floating buoy to maintain its exact position - ✔✔When plotting a
voyage you should :
A Rely on a buoy to be on station as charted
B Never rely on a floating buoy to maintain its exact position
C Rely on a buoy to show proper light characteristics
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 4
