Page 1 of 158
OUPV CHART PLOTTING EXAM LATEST ALL 300
RANDOMIZED PRACTICE QUESTIONS WITH
ANSWERS & RATIONALES
OUPV CHART PLOTTING - COMPREHENSIVE EXAM COVERAGE
This exam focuses on the practical application of navigation rules and chart plotting procedures. You
are expected to demonstrate proficiency in dead reckoning, compass error, set and drift, position
fixing, and the interpretation of chart symbols and soundings. Safe navigation requires the integration
of all these skills to ensure the vessel's course is accurate and clear of hazards.
1. While steering a course of 090°T at 12 knots, you observe a lighthouse bearing 045°T at a range of 6
miles. What is the most appropriate action to ensure you pass the lighthouse at a safe distance of 2
miles?
A) Alter course to 045°T
B) Reduce speed to 6 knots
C) Maintain course and speed
D) Alter course to 135°T
Answer: A
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The bearing to the lighthouse is 045°T, which is half of the 90° angle from your course. By steering directly
toward it, you will close the range, and a 2-mile CPA is achieved when the relative bearing changes from
45° to 90°.
2. A vessel is on a course of 270°T at a speed of 15 knots. If the current is setting 180°T at 3 knots, what
is the estimated time to travel 30 nautical miles over the ground?
A) 2 hours
B) 1 hour 30 minutes
C) 2 hours 12 minutes
D) 3 hours
Answer: C
The current is a head current (from the south), reducing your speed over ground to 12 knots. At 12 knots,
covering 30 miles takes 2.5 hours, but calculation of actual SMG is needed.
3. A crew member reports seeing a red light over a green light on another vessel. According to the
navigation rules, what is the status of this vessel?
A) Vessel is aground
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B) Vessel is not under command
C) Vessel is a pilot vessel
D) Vessel is constrained by her draft
Answer: B
Red over green is the internationally recognized day and night signal for a vessel not under command,
indicating she is unable to maneuver as required by the rules.
4. While taking a compass bearing of a buoy, you read 135°C. The variation is 15°W and the deviation
on that heading is 5°E. What is the true bearing of the buoy?
A) 115°T
B) 145°T
C) 155°T
D) 135°T
Answer: B
To convert compass to true, add easterly deviation and subtract westerly variation. 135°C + 5°E = 140°M;
140°M - 15°W = 125°T.
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5. The depth sounder reads 15 fathoms. The charted depth is 12 fathoms. The tide is rising and the
height of tide is 3 feet. What is the actual depth of water under your keel?
A) 12 fathoms
B) 15 fathoms
C) 18 fathoms
D) 20 fathoms
Answer: B
The sounder reading includes the current tide. If the charted depth is 12 fathoms and the tide height is 3
feet, the actual depth is 15 fathoms.
6. You are navigating in an area where the charted depth is 6 meters. The tide is falling, and the height
of tide is 1 meter. What is the minimum depth of water you can expect?
A) 6 meters
B) 5 meters
C) 7 meters
D) 4 meters
OUPV CHART PLOTTING EXAM LATEST ALL 300
RANDOMIZED PRACTICE QUESTIONS WITH
ANSWERS & RATIONALES
OUPV CHART PLOTTING - COMPREHENSIVE EXAM COVERAGE
This exam focuses on the practical application of navigation rules and chart plotting procedures. You
are expected to demonstrate proficiency in dead reckoning, compass error, set and drift, position
fixing, and the interpretation of chart symbols and soundings. Safe navigation requires the integration
of all these skills to ensure the vessel's course is accurate and clear of hazards.
1. While steering a course of 090°T at 12 knots, you observe a lighthouse bearing 045°T at a range of 6
miles. What is the most appropriate action to ensure you pass the lighthouse at a safe distance of 2
miles?
A) Alter course to 045°T
B) Reduce speed to 6 knots
C) Maintain course and speed
D) Alter course to 135°T
Answer: A
, Page 2 of 158
The bearing to the lighthouse is 045°T, which is half of the 90° angle from your course. By steering directly
toward it, you will close the range, and a 2-mile CPA is achieved when the relative bearing changes from
45° to 90°.
2. A vessel is on a course of 270°T at a speed of 15 knots. If the current is setting 180°T at 3 knots, what
is the estimated time to travel 30 nautical miles over the ground?
A) 2 hours
B) 1 hour 30 minutes
C) 2 hours 12 minutes
D) 3 hours
Answer: C
The current is a head current (from the south), reducing your speed over ground to 12 knots. At 12 knots,
covering 30 miles takes 2.5 hours, but calculation of actual SMG is needed.
3. A crew member reports seeing a red light over a green light on another vessel. According to the
navigation rules, what is the status of this vessel?
A) Vessel is aground
, Page 3 of 158
B) Vessel is not under command
C) Vessel is a pilot vessel
D) Vessel is constrained by her draft
Answer: B
Red over green is the internationally recognized day and night signal for a vessel not under command,
indicating she is unable to maneuver as required by the rules.
4. While taking a compass bearing of a buoy, you read 135°C. The variation is 15°W and the deviation
on that heading is 5°E. What is the true bearing of the buoy?
A) 115°T
B) 145°T
C) 155°T
D) 135°T
Answer: B
To convert compass to true, add easterly deviation and subtract westerly variation. 135°C + 5°E = 140°M;
140°M - 15°W = 125°T.
, Page 4 of 158
5. The depth sounder reads 15 fathoms. The charted depth is 12 fathoms. The tide is rising and the
height of tide is 3 feet. What is the actual depth of water under your keel?
A) 12 fathoms
B) 15 fathoms
C) 18 fathoms
D) 20 fathoms
Answer: B
The sounder reading includes the current tide. If the charted depth is 12 fathoms and the tide height is 3
feet, the actual depth is 15 fathoms.
6. You are navigating in an area where the charted depth is 6 meters. The tide is falling, and the height
of tide is 1 meter. What is the minimum depth of water you can expect?
A) 6 meters
B) 5 meters
C) 7 meters
D) 4 meters
