USCG Rules of the Road Exam Module
International and Inland | Practice Exam Q&A
ID14116
,USCG Rules of the Road Exam Module International and Inland | Practice Exam Q&A
1. The vessel approaches a traffic or pilotage constraint. With respect to 10. A slack tank creates additional free-surface effect. Which action is most
Navigation rules, watchkeeping responsibilities and bridge resource management, likely to prevent recurrence of a problem involving Ship stability, trim, loading
what is the best FIRST action? and basic stability calculations?
A. Make a series of small course changes that are difficult to detect. A. Move heavy cargo higher to free lower deck space without recalculation.
B. Rely on one electronic source when independent information conflicts. B. Correct a list by moving weight without checking stability impact.
C. Cross-check position, traffic and navigation sources before altering the passage C. Account for free-surface and weight-shift effects when evaluating stability and
plan. trim, then confirm that the corrective action is effective before closure.
D. Continue on an uncertain position until the next scheduled fix. D. Accept a loading condition based only on even draft readings.
Correct Answer: C Correct Answer: C
Explanation: The strongest exam-style response is the one that controls immediate risk, Explanation: The correct response protects the integrity of the process: establish the
checks the relevant condition, and then acts within the defined requirements for facts, apply the appropriate control, and verify the result before closure.
Navigation rules, watchkeeping responsibilities and bridge resource management.
11. Cargo loading changes the vessel's vertical center of gravity. Which sequence
2. Visibility falls and several targets appear on radar. Which evidence is most is most appropriate when carrying out Ship stability?
important when evaluating Navigation rules? A. Accept a loading condition based only on even draft readings.
A. Review bearing/range trend, own-ship course/speed, target aspect and applicable B. Account for free-surface and weight-shift effects when evaluating stability and
rule and compare the findings with the applicable criteria. trim, then verify the resulting state before moving to the next step.
B. Continue on an uncertain position until the next scheduled fix. C. Ignore slack-tank effects because total liquid weight is unchanged.
C. Assume there is no risk because the other vessel is visually small. D. Correct a list by moving weight without checking stability impact.
D. Rely on one electronic source when independent information conflicts. Correct Answer: B
Correct Answer: A Explanation: This approach preserves control of the situation while producing evidence
Explanation: The correct response protects the integrity of the process: establish the that can confirm whether the action actually corrected the issue involving Ship
facts, apply the appropriate control, and verify the result before closure. stability.
3. Visibility falls and several targets appear on radar. Which response best 12. A slack tank creates additional free-surface effect; a navigation fix differs
controls the primary risk associated with watchkeeping responsibilities? by 0.8 nautical mile from another source. Which choice demonstrates the strongest
A. Rely on one electronic source when independent information conflicts. control of basic stability calculations?
B. Make a series of small course changes that are difficult to detect. A. Recalculate the relevant stability condition before accepting the loading or
C. Cross-check position, traffic and navigation sources before altering the passage ballast change.
plan. B. Correct a list by moving weight without checking stability impact.
D. Assume there is no risk because the other vessel is visually small. C. Move heavy cargo higher to free lower deck space without recalculation.
Correct Answer: C D. Ignore slack-tank effects because total liquid weight is unchanged.
Explanation: This approach preserves control of the situation while producing evidence Correct Answer: A
that can confirm whether the action actually corrected the issue involving watchkeeping Explanation: This answer uses verified evidence before action, which reduces the chance
responsibilities. of masking the real problem and supports a traceable decision about basic stability
calculations.
4. A vessel approaches restricted visibility with traffic nearby; visibility
falls below one nautical mile. Before proceeding with work involving bridge 13. A deck load is shifted to a higher position. What is required before
resource management, what should be verified? accepting the result related to Cargo operations, stowage, securing and hazards
A. Review position, course, speed, traffic and applicable navigation rules and compare relevant to vessel type?
the findings with the applicable criteria. A. Ignore slack-tank effects because total liquid weight is unchanged.
B. Assume constant bearing is harmless when range is decreasing. B. Review loading manual limits, free-surface moment and resulting draft/trim and
C. Silence a machinery alarm and continue at the same load without investigation. compare the findings with the applicable criteria.
D. Use a single navigation source after another source shows a material discrepancy. C. Accept a loading condition based only on even draft readings.
Correct Answer: A D. Move heavy cargo higher to free lower deck space without recalculation.
Explanation: This answer uses verified evidence before action, which reduces the chance Correct Answer: B
of masking the real problem and supports a traceable decision about bridge resource Explanation: The selected action best supports safe, compliant, and technically sound
management. performance because it addresses Cargo operations, stowage, securing and hazards
relevant to vessel type using observable evidence rather than convenience.
5. An alarm occurs during machinery operation. Which troubleshooting approach is
most appropriate for Chartwork, publications, voyage planning and position 14. Ballast is proposed to correct a list. Under these conditions, when should
fixing? the issue involving Cargo operations be escalated?
A. Discharge a small contaminant amount rather than initiating the response procedure. A. Move heavy cargo higher to free lower deck space without recalculation.
B. Make an unverified ballast change solely to improve trim. B. Correct a list by moving weight without checking stability impact.
C. Depart with required safety equipment inoperative because the voyage is short. C. Accept a loading condition based only on even draft readings.
D. Verify the loading and stability data before accepting a cargo or ballast change. D. Recalculate the relevant stability condition before accepting the loading or
Correct Answer: D ballast change.
Explanation: The selected action best supports safe, compliant, and technically sound Correct Answer: D
performance because it addresses Chartwork, publications, voyage planning and position Explanation: A defensible professional decision should be based on current evidence and
fixing using observable evidence rather than convenience. applicable criteria. The other choices rely on assumption, remove safeguards, or change
conditions before the cause is understood.
6. A vessel approaches restricted visibility with traffic nearby. Which action
best supports a defensible decision about voyage planning? 15. A navigation fix does not agree with another available source. Which
A. Cross-check navigation sources and resolve a position discrepancy before relying on comparison is most useful for interpreting hazards relevant to vessel type?
the fix. A. Review stability data, loading condition and free-surface effects and compare the
B. Use a single navigation source after another source shows a material discrepancy. findings with the applicable criteria.
C. Assume constant bearing is harmless when range is decreasing. B. Make an unverified ballast change solely to improve trim.
D. Silence a machinery alarm and continue at the same load without investigation. C. Depart with required safety equipment inoperative because the voyage is short.
Correct Answer: A D. Discharge a small contaminant amount rather than initiating the response procedure.
Explanation: A defensible professional decision should be based on current evidence and Correct Answer: A
applicable criteria. The other choices rely on assumption, remove safeguards, or change Explanation: This is the most appropriate option because it connects the observed
conditions before the cause is understood. condition to the governing requirement and leaves a record of why the decision was made.
7. A vessel must plan a passage through constrained waters. A change affecting 16. An enclosed-space task is proposed without a completed entry check; the
position fixing is being considered. How should it be handled? vessel draft increases after cargo loading. Which action best distinguishes the
A. Depart with required safety equipment inoperative because the voyage is short. underlying cause from a symptom in Marine safety systems, lifesaving appliances
B. Discharge a small contaminant amount rather than initiating the response procedure. and emergency procedures?
C. Make an unverified ballast change solely to improve trim. A. Continue the transfer until the planned quantity is complete.
D. Verify the loading and stability data before accepting a cargo or ballast change. B. Correct a required safety-equipment deficiency and verify readiness before
Correct Answer: D proceeding, then confirm that the corrective action is effective before closure.
Explanation: This is the most appropriate option because it connects the observed C. Depart with required safety equipment unavailable because conditions are calm.
condition to the governing requirement and leaves a record of why the decision was made. D. Enter an enclosed space based only on a prior atmosphere test.
Correct Answer: B
8. A position fix disagrees with the expected track; a target bearing remains
Explanation: The correct choice follows a verify-act-confirm sequence. That is more
nearly constant as range decreases. The abnormal condition directly affects
reliable than bypassing controls or making multiple uncontrolled changes.
Meteorology, tides, currents and environmental conditions affecting safe
navigation. What is the most appropriate response? 17. Required lifesaving equipment is not ready before departure. Which response
A. Assume there is no risk because the other vessel is visually small. is most consistent with the professional or compliance requirements governing
B. Use all available means to determine collision risk and take early, substantial Marine safety systems?
action consistent with the applicable navigation rules. A. Enter an enclosed space based only on a prior atmosphere test.
C. Continue on an uncertain position until the next scheduled fix. B. Correct a required safety-equipment deficiency and verify readiness before
D. Make a series of small course changes that are difficult to detect. proceeding.
Correct Answer: B C. Wash a small spill overboard rather than initiating the response process.
Explanation: The correct choice follows a verify-act-confirm sequence. That is more D. Depart with required safety equipment unavailable because conditions are calm.
reliable than bypassing controls or making multiple uncontrolled changes. Correct Answer: B
Explanation: The strongest exam-style response is the one that controls immediate risk,
9. The vessel approaches a traffic or pilotage constraint. Which documentation
checks the relevant condition, and then acts within the defined requirements for Marine
approach best supports traceability for environmental conditions affecting safe safety systems.
navigation?
A. Record the observed condition, supporting evidence, decision and responsible 18. An alarm occurs during machinery operation. Which handoff practice best
follow-up; communicate any unresolved risk to the next responsible person. reduces error risk for lifesaving appliances?
B. Make a series of small course changes that are difficult to detect. A. Record the observed condition, supporting evidence, decision and responsible
C. Rely on one electronic source when independent information conflicts. follow-up; communicate any unresolved risk to the next responsible person.
D. Continue on an uncertain position until the next scheduled fix. B. Use a single navigation source after another source shows a material discrepancy.
Correct Answer: A C. Assume constant bearing is harmless when range is decreasing.
Explanation: The strongest exam-style response is the one that controls immediate risk, D. Silence a machinery alarm and continue at the same load without investigation.
checks the relevant condition, and then acts within the defined requirements for Correct Answer: A
environmental conditions affecting safe navigation. Explanation: The correct response protects the integrity of the process: establish the
facts, apply the appropriate control, and verify the result before closure.
1
,USCG Rules of the Road Exam Module International and Inland | Practice Exam Q&A
19. An enclosed-space task is proposed without a completed entry check. Which 28. A pollution-prevention barrier is found compromised during transfer;
decision about emergency procedures is best supported by the available evidence? visibility falls below one nautical mile. The abnormal condition directly affects
A. Wash a small spill overboard rather than initiating the response process. Pollution prevention. What is the most appropriate response?
B. Enter an enclosed space based only on a prior atmosphere test. A. Stop or control the operation, protect personnel and follow the required emergency
C. Continue the transfer until the planned quantity is complete. or pollution-response procedure.
D. Correct a required safety-equipment deficiency and verify readiness before B. Continue the transfer until the planned quantity is complete.
proceeding. C. Depart with required safety equipment unavailable because conditions are calm.
Correct Answer: D D. Enter an enclosed space based only on a prior atmosphere test.
Explanation: This approach preserves control of the situation while producing evidence Correct Answer: A
that can confirm whether the action actually corrected the issue involving emergency Explanation: This answer uses verified evidence before action, which reduces the chance
procedures. of masking the real problem and supports a traceable decision about Pollution
prevention.
20. A machinery temperature rises above its normal operating trend; a machinery
temperature rises 20 C above its normal trend. Which review step adds the most 29. A towing or deck operation is affected by changing weather. Which
value before closing work involving Fire prevention, firefighting, damage control documentation approach best supports traceability for MARPOL principles?
and abandonment procedures? A. Discharge a small contaminant amount rather than initiating the response procedure.
A. Reset a protective trip repeatedly without finding the cause. B. Make an unverified ballast change solely to improve trim.
B. Disable an alarm that is interrupting operations. C. Depart with required safety equipment inoperative because the voyage is short.
C. Compare operating pressures/temperatures, equipment status and recent changes to D. Record the observed condition, supporting evidence, decision and responsible
isolate the fault safely, then confirm that the corrective action is effective before follow-up; communicate any unresolved risk to the next responsible person.
closure. Correct Answer: D
D. Increase machinery load to see whether the abnormal indication clears. Explanation: The selected action best supports safe, compliant, and technically sound
Correct Answer: C performance because it addresses MARPOL principles using observable evidence rather than
Explanation: This answer uses verified evidence before action, which reduces the chance convenience.
of masking the real problem and supports a traceable decision about Fire prevention,
30. A spill occurs during machinery or cargo operations. Which action is most
firefighting, damage control and abandonment procedures.
likely to prevent recurrence of a problem involving environmental protection?
21. A towing or deck operation is affected by changing weather. With respect to A. Correct a required safety-equipment deficiency and verify readiness before
Fire prevention, what is the best FIRST action? proceeding, then confirm that the corrective action is effective before closure.
A. Verify the loading and stability data before accepting a cargo or ballast change. B. Depart with required safety equipment unavailable because conditions are calm.
B. Make an unverified ballast change solely to improve trim. C. Continue the transfer until the planned quantity is complete.
C. Depart with required safety equipment inoperative because the voyage is short. D. Wash a small spill overboard rather than initiating the response process.
D. Discharge a small contaminant amount rather than initiating the response procedure. Correct Answer: A
Correct Answer: A Explanation: A defensible professional decision should be based on current evidence and
Explanation: The selected action best supports safe, compliant, and technically sound applicable criteria. The other choices rely on assumption, remove safeguards, or change
performance because it addresses Fire prevention using observable evidence rather than conditions before the cause is understood.
convenience.
31. Visibility falls and several targets appear on radar. Which sequence is most
22. An electrical protective device trips repeatedly. Which evidence is most appropriate when carrying out STCW competence, drills, records and professional
important when evaluating damage control? watchkeeping standards?
A. Disable an alarm that is interrupting operations. A. Rely on one electronic source when independent information conflicts.
B. Review pressure, temperature, lubrication, electrical load, alarm history and B. Cross-check position, traffic and navigation sources before altering the passage
equipment status and compare the findings with the applicable criteria. plan, then verify the resulting state before moving to the next step.
C. Reset a protective trip repeatedly without finding the cause. C. Make a series of small course changes that are difficult to detect.
D. Make several plant changes simultaneously before recording the original condition. D. Assume there is no risk because the other vessel is visually small.
Correct Answer: B Correct Answer: B
Explanation: A defensible professional decision should be based on current evidence and Explanation: This is the most appropriate option because it connects the observed
applicable criteria. The other choices rely on assumption, remove safeguards, or change condition to the governing requirement and leaves a record of why the decision was made.
conditions before the cause is understood.
32. A vessel approaches restricted visibility with traffic nearby; visibility
23. A pre-departure check identifies a safety-equipment deficiency. Which falls below one nautical mile. Which choice demonstrates the strongest control of
response best controls the primary risk associated with abandonment procedures? STCW competence?
A. Discharge a small contaminant amount rather than initiating the response procedure. A. Silence a machinery alarm and continue at the same load without investigation.
B. Make an unverified ballast change solely to improve trim. B. Use a single navigation source after another source shows a material discrepancy.
C. Depart with required safety equipment inoperative because the voyage is short. C. Assume constant bearing is harmless when range is decreasing.
D. Verify the loading and stability data before accepting a cargo or ballast change. D. Cross-check navigation sources and resolve a position discrepancy before relying on
Correct Answer: D the fix.
Explanation: This is the most appropriate option because it connects the observed Correct Answer: D
condition to the governing requirement and leaves a record of why the decision was made. Explanation: The correct choice follows a verify-act-confirm sequence. That is more
reliable than bypassing controls or making multiple uncontrolled changes.
24. A pump loses discharge pressure while demand remains constant; a navigation
fix differs by 0.8 nautical mile from another source. Before proceeding with work 33. Another vessel remains on nearly constant bearing while range decreases. What
involving Marine engineering or electrical systems applicable to the named is required before accepting the result related to professional watchkeeping
officer/module, what should be verified? standards?
A. Reset a protective trip repeatedly without finding the cause. A. Make a series of small course changes that are difficult to detect.
B. Disable an alarm that is interrupting operations. B. Review position sources, charted hazards, depth/under-keel clearance and traffic
C. Review pressure, temperature, lubrication, electrical load, alarm history and and compare the findings with the applicable criteria.
equipment status and compare the findings with the applicable criteria. C. Rely on one electronic source when independent information conflicts.
D. Increase machinery load to see whether the abnormal indication clears. D. Continue on an uncertain position until the next scheduled fix.
Correct Answer: C Correct Answer: B
Explanation: The correct choice follows a verify-act-confirm sequence. That is more Explanation: The strongest exam-style response is the one that controls immediate risk,
reliable than bypassing controls or making multiple uncontrolled changes. checks the relevant condition, and then acts within the defined requirements for
professional watchkeeping standards.
25. A machinery temperature rises above its normal operating trend. Which
troubleshooting approach is most appropriate for Marine engineering? 34. Another vessel remains on nearly constant bearing while range decreases.
A. Increase machinery load to see whether the abnormal indication clears. Under these conditions, when should the issue involving Navigation rules,
B. Compare operating pressures/temperatures, equipment status and recent changes to watchkeeping responsibilities and bridge resource management be escalated?
isolate the fault safely. A. Continue on an uncertain position until the next scheduled fix.
C. Make several plant changes simultaneously before recording the original condition. B. Use all available means to determine collision risk and take early, substantial
D. Disable an alarm that is interrupting operations. action consistent with the applicable navigation rules.
Correct Answer: B C. Assume there is no risk because the other vessel is visually small.
Explanation: The strongest exam-style response is the one that controls immediate risk, D. Rely on one electronic source when independent information conflicts.
checks the relevant condition, and then acts within the defined requirements for Marine Correct Answer: B
engineering. Explanation: The correct response protects the integrity of the process: establish the
facts, apply the appropriate control, and verify the result before closure.
26. An engineering watch observes an abnormal temperature or pressure. Which
action best supports a defensible decision about electrical systems applicable to 35. A position fix disagrees with the expected track. Which comparison is most
the named officer/module? useful for interpreting Navigation rules?
A. Silence a machinery alarm and continue at the same load without investigation. A. Rely on one electronic source when independent information conflicts.
B. Use a single navigation source after another source shows a material discrepancy. B. Make a series of small course changes that are difficult to detect.
C. Assume constant bearing is harmless when range is decreasing. C. Review position sources, charted hazards, depth/under-keel clearance and traffic
D. Cross-check navigation sources and resolve a position discrepancy before relying on and compare the findings with the applicable criteria.
the fix. D. Assume there is no risk because the other vessel is visually small.
Correct Answer: D Correct Answer: C
Explanation: The correct response protects the integrity of the process: establish the Explanation: This approach preserves control of the situation while producing evidence
facts, apply the appropriate control, and verify the result before closure. that can confirm whether the action actually corrected the issue involving Navigation
rules.
27. A spill occurs during machinery or cargo operations. A change affecting
Pollution prevention, MARPOL principles and environmental protection is being 36. A position fix disagrees with the expected track; a navigation fix differs by
considered. How should it be handled? 0.8 nautical mile from another source. Which action best distinguishes the
A. Correct a required safety-equipment deficiency and verify readiness before underlying cause from a symptom in watchkeeping responsibilities?
proceeding. A. Cross-check position, traffic and navigation sources before altering the passage
B. Wash a small spill overboard rather than initiating the response process. plan, then confirm that the corrective action is effective before closure.
C. Enter an enclosed space based only on a prior atmosphere test. B. Assume there is no risk because the other vessel is visually small.
D. Continue the transfer until the planned quantity is complete. C. Continue on an uncertain position until the next scheduled fix.
Correct Answer: A D. Make a series of small course changes that are difficult to detect.
Explanation: This approach preserves control of the situation while producing evidence Correct Answer: A
that can confirm whether the action actually corrected the issue involving Pollution Explanation: This answer uses verified evidence before action, which reduces the chance
prevention, MARPOL principles and environmental protection. of masking the real problem and supports a traceable decision about watchkeeping
responsibilities.
2
, USCG Rules of the Road Exam Module International and Inland | Practice Exam Q&A
37. An engineering watch observes an abnormal temperature or pressure. Which 46. Cargo loading changes the vessel's vertical center of gravity. Which action
response is most consistent with the professional or compliance requirements best supports a defensible decision about Cargo operations, stowage, securing and
governing bridge resource management? hazards relevant to vessel type?
A. Depart with required safety equipment inoperative because the voyage is short. A. Move heavy cargo higher to free lower deck space without recalculation.
B. Discharge a small contaminant amount rather than initiating the response procedure. B. Correct a list by moving weight without checking stability impact.
C. Make an unverified ballast change solely to improve trim. C. Accept a loading condition based only on even draft readings.
D. Verify the loading and stability data before accepting a cargo or ballast change. D. Recalculate the relevant stability condition before accepting the loading or
Correct Answer: D ballast change.
Explanation: The selected action best supports safe, compliant, and technically sound Correct Answer: D
performance because it addresses bridge resource management using observable evidence Explanation: A defensible professional decision should be based on current evidence and
rather than convenience. applicable criteria. The other choices rely on assumption, remove safeguards, or change
conditions before the cause is understood.
38. A pollution-prevention control is compromised during operations. Which
handoff practice best reduces error risk for Chartwork, publications, voyage 47. A deck load is shifted to a higher position. A change affecting Cargo
planning and position fixing? operations is being considered. How should it be handled?
A. Record the observed condition, supporting evidence, decision and responsible A. Accept a loading condition based only on even draft readings.
follow-up; communicate any unresolved risk to the next responsible person. B. Ignore slack-tank effects because total liquid weight is unchanged.
B. Silence a machinery alarm and continue at the same load without investigation. C. Account for free-surface and weight-shift effects when evaluating stability and
C. Use a single navigation source after another source shows a material discrepancy. trim.
D. Assume constant bearing is harmless when range is decreasing. D. Correct a list by moving weight without checking stability impact.
Correct Answer: A Correct Answer: C
Explanation: A defensible professional decision should be based on current evidence and Explanation: This is the most appropriate option because it connects the observed
applicable criteria. The other choices rely on assumption, remove safeguards, or change condition to the governing requirement and leaves a record of why the decision was made.
conditions before the cause is understood.
48. A deck watch detects a change in bearing to another vessel; a target bearing
39. An engineering watch observes an abnormal temperature or pressure. Which remains nearly constant as range decreases. The abnormal condition directly
decision about voyage planning is best supported by the available evidence? affects hazards relevant to vessel type. What is the most appropriate response?
A. Make an unverified ballast change solely to improve trim. A. Use a single navigation source after another source shows a material discrepancy.
B. Verify the loading and stability data before accepting a cargo or ballast change. B. Cross-check navigation sources and resolve a position discrepancy before relying on
C. Depart with required safety equipment inoperative because the voyage is short. the fix.
D. Discharge a small contaminant amount rather than initiating the response procedure. C. Assume constant bearing is harmless when range is decreasing.
Correct Answer: B D. Silence a machinery alarm and continue at the same load without investigation.
Explanation: This is the most appropriate option because it connects the observed Correct Answer: B
condition to the governing requirement and leaves a record of why the decision was made. Explanation: The correct choice follows a verify-act-confirm sequence. That is more
reliable than bypassing controls or making multiple uncontrolled changes.
40. A navigation fix does not agree with another available source; the vessel
draft increases after cargo loading. Which review step adds the most value before 49. A spill occurs during machinery or cargo operations. Which documentation
closing work involving position fixing? approach best supports traceability for Marine safety systems, lifesaving
A. Assume constant bearing is harmless when range is decreasing. appliances and emergency procedures?
B. Silence a machinery alarm and continue at the same load without investigation. A. Enter an enclosed space based only on a prior atmosphere test.
C. Verify the loading and stability data before accepting a cargo or ballast change, B. Record the observed condition, supporting evidence, decision and responsible
then confirm that the corrective action is effective before closure. follow-up; communicate any unresolved risk to the next responsible person.
D. Use a single navigation source after another source shows a material discrepancy. C. Wash a small spill overboard rather than initiating the response process.
Correct Answer: C D. Depart with required safety equipment unavailable because conditions are calm.
Explanation: The correct choice follows a verify-act-confirm sequence. That is more Correct Answer: B
reliable than bypassing controls or making multiple uncontrolled changes. Explanation: The strongest exam-style response is the one that controls immediate risk,
checks the relevant condition, and then acts within the defined requirements for Marine
41. The vessel approaches a traffic or pilotage constraint. With respect to safety systems, lifesaving appliances and emergency procedures.
Meteorology, tides, currents and environmental conditions affecting safe
navigation, what is the best FIRST action? 50. An enclosed-space task is proposed without a completed entry check. Which
A. Cross-check position, traffic and navigation sources before altering the passage action is most likely to prevent recurrence of a problem involving Marine safety
plan. systems?
B. Make a series of small course changes that are difficult to detect. A. Depart with required safety equipment unavailable because conditions are calm.
C. Rely on one electronic source when independent information conflicts. B. Continue the transfer until the planned quantity is complete.
D. Continue on an uncertain position until the next scheduled fix. C. Correct a required safety-equipment deficiency and verify readiness before
Correct Answer: A proceeding, then confirm that the corrective action is effective before closure.
Explanation: The strongest exam-style response is the one that controls immediate risk, D. Wash a small spill overboard rather than initiating the response process.
checks the relevant condition, and then acts within the defined requirements for Correct Answer: C
Meteorology, tides, currents and environmental conditions affecting safe navigation. Explanation: The correct response protects the integrity of the process: establish the
facts, apply the appropriate control, and verify the result before closure.
42. Another vessel remains on nearly constant bearing while range decreases.
Which evidence is most important when evaluating environmental conditions 51. A pollution-prevention control is compromised during operations. Which
affecting safe navigation? sequence is most appropriate when carrying out lifesaving appliances?
A. Continue on an uncertain position until the next scheduled fix. A. Make an unverified ballast change solely to improve trim.
B. Review bearing/range trend, own-ship course/speed, target aspect and applicable B. Depart with required safety equipment inoperative because the voyage is short.
rule and compare the findings with the applicable criteria. C. Discharge a small contaminant amount rather than initiating the response procedure.
C. Assume there is no risk because the other vessel is visually small. D. Verify the loading and stability data before accepting a cargo or ballast change,
D. Rely on one electronic source when independent information conflicts. then verify the resulting state before moving to the next step.
Correct Answer: B Correct Answer: D
Explanation: The correct response protects the integrity of the process: establish the Explanation: This approach preserves control of the situation while producing evidence
facts, apply the appropriate control, and verify the result before closure. that can confirm whether the action actually corrected the issue involving lifesaving
appliances.
43. Ballast is proposed to correct a list. Which response best controls the
primary risk associated with Ship stability, trim, loading and basic stability 52. A spill occurs during machinery or cargo operations; the vessel draft
calculations? increases after cargo loading. Which choice demonstrates the strongest control of
A. Accept a loading condition based only on even draft readings. emergency procedures?
B. Account for free-surface and weight-shift effects when evaluating stability and A. Continue the transfer until the planned quantity is complete.
trim. B. Depart with required safety equipment unavailable because conditions are calm.
C. Ignore slack-tank effects because total liquid weight is unchanged. C. Enter an enclosed space based only on a prior atmosphere test.
D. Correct a list by moving weight without checking stability impact. D. Stop or control the operation, protect personnel and follow the required emergency
Correct Answer: B or pollution-response procedure.
Explanation: This approach preserves control of the situation while producing evidence Correct Answer: D
that can confirm whether the action actually corrected the issue involving Ship Explanation: This answer uses verified evidence before action, which reduces the chance
stability, trim, loading and basic stability calculations. of masking the real problem and supports a traceable decision about emergency
procedures.
44. A slack tank creates additional free-surface effect; a machinery temperature
rises 20 C above its normal trend. Before proceeding with work involving Ship 53. A pump loses discharge pressure while demand remains constant. What is
stability, what should be verified? required before accepting the result related to Fire prevention, firefighting,
A. Correct a list by moving weight without checking stability impact. damage control and abandonment procedures?
B. Review displacement, weight location, GM/stability data and tank condition and A. Increase machinery load to see whether the abnormal indication clears.
compare the findings with the applicable criteria. B. Make several plant changes simultaneously before recording the original condition.
C. Move heavy cargo higher to free lower deck space without recalculation. C. Review protective-device indication, circuit condition and recent configuration
D. Ignore slack-tank effects because total liquid weight is unchanged. change and compare the findings with the applicable criteria.
Correct Answer: B D. Disable an alarm that is interrupting operations.
Explanation: This answer uses verified evidence before action, which reduces the chance Correct Answer: C
of masking the real problem and supports a traceable decision about Ship stability. Explanation: The selected action best supports safe, compliant, and technically sound
performance because it addresses Fire prevention, firefighting, damage control and
45. Ballast is proposed to correct a list. Which troubleshooting approach is most abandonment procedures using observable evidence rather than convenience.
appropriate for basic stability calculations?
A. Ignore slack-tank effects because total liquid weight is unchanged. 54. A vessel approaches restricted visibility with traffic nearby. Under these
B. Account for free-surface and weight-shift effects when evaluating stability and conditions, when should the issue involving Fire prevention be escalated?
trim. A. Use a single navigation source after another source shows a material discrepancy.
C. Accept a loading condition based only on even draft readings. B. Cross-check navigation sources and resolve a position discrepancy before relying on
D. Move heavy cargo higher to free lower deck space without recalculation. the fix.
Correct Answer: B C. Assume constant bearing is harmless when range is decreasing.
Explanation: The selected action best supports safe, compliant, and technically sound D. Silence a machinery alarm and continue at the same load without investigation.
performance because it addresses basic stability calculations using observable evidence Correct Answer: B
rather than convenience. Explanation: A defensible professional decision should be based on current evidence and
applicable criteria. The other choices rely on assumption, remove safeguards, or change
conditions before the cause is understood.
3
International and Inland | Practice Exam Q&A
ID14116
,USCG Rules of the Road Exam Module International and Inland | Practice Exam Q&A
1. The vessel approaches a traffic or pilotage constraint. With respect to 10. A slack tank creates additional free-surface effect. Which action is most
Navigation rules, watchkeeping responsibilities and bridge resource management, likely to prevent recurrence of a problem involving Ship stability, trim, loading
what is the best FIRST action? and basic stability calculations?
A. Make a series of small course changes that are difficult to detect. A. Move heavy cargo higher to free lower deck space without recalculation.
B. Rely on one electronic source when independent information conflicts. B. Correct a list by moving weight without checking stability impact.
C. Cross-check position, traffic and navigation sources before altering the passage C. Account for free-surface and weight-shift effects when evaluating stability and
plan. trim, then confirm that the corrective action is effective before closure.
D. Continue on an uncertain position until the next scheduled fix. D. Accept a loading condition based only on even draft readings.
Correct Answer: C Correct Answer: C
Explanation: The strongest exam-style response is the one that controls immediate risk, Explanation: The correct response protects the integrity of the process: establish the
checks the relevant condition, and then acts within the defined requirements for facts, apply the appropriate control, and verify the result before closure.
Navigation rules, watchkeeping responsibilities and bridge resource management.
11. Cargo loading changes the vessel's vertical center of gravity. Which sequence
2. Visibility falls and several targets appear on radar. Which evidence is most is most appropriate when carrying out Ship stability?
important when evaluating Navigation rules? A. Accept a loading condition based only on even draft readings.
A. Review bearing/range trend, own-ship course/speed, target aspect and applicable B. Account for free-surface and weight-shift effects when evaluating stability and
rule and compare the findings with the applicable criteria. trim, then verify the resulting state before moving to the next step.
B. Continue on an uncertain position until the next scheduled fix. C. Ignore slack-tank effects because total liquid weight is unchanged.
C. Assume there is no risk because the other vessel is visually small. D. Correct a list by moving weight without checking stability impact.
D. Rely on one electronic source when independent information conflicts. Correct Answer: B
Correct Answer: A Explanation: This approach preserves control of the situation while producing evidence
Explanation: The correct response protects the integrity of the process: establish the that can confirm whether the action actually corrected the issue involving Ship
facts, apply the appropriate control, and verify the result before closure. stability.
3. Visibility falls and several targets appear on radar. Which response best 12. A slack tank creates additional free-surface effect; a navigation fix differs
controls the primary risk associated with watchkeeping responsibilities? by 0.8 nautical mile from another source. Which choice demonstrates the strongest
A. Rely on one electronic source when independent information conflicts. control of basic stability calculations?
B. Make a series of small course changes that are difficult to detect. A. Recalculate the relevant stability condition before accepting the loading or
C. Cross-check position, traffic and navigation sources before altering the passage ballast change.
plan. B. Correct a list by moving weight without checking stability impact.
D. Assume there is no risk because the other vessel is visually small. C. Move heavy cargo higher to free lower deck space without recalculation.
Correct Answer: C D. Ignore slack-tank effects because total liquid weight is unchanged.
Explanation: This approach preserves control of the situation while producing evidence Correct Answer: A
that can confirm whether the action actually corrected the issue involving watchkeeping Explanation: This answer uses verified evidence before action, which reduces the chance
responsibilities. of masking the real problem and supports a traceable decision about basic stability
calculations.
4. A vessel approaches restricted visibility with traffic nearby; visibility
falls below one nautical mile. Before proceeding with work involving bridge 13. A deck load is shifted to a higher position. What is required before
resource management, what should be verified? accepting the result related to Cargo operations, stowage, securing and hazards
A. Review position, course, speed, traffic and applicable navigation rules and compare relevant to vessel type?
the findings with the applicable criteria. A. Ignore slack-tank effects because total liquid weight is unchanged.
B. Assume constant bearing is harmless when range is decreasing. B. Review loading manual limits, free-surface moment and resulting draft/trim and
C. Silence a machinery alarm and continue at the same load without investigation. compare the findings with the applicable criteria.
D. Use a single navigation source after another source shows a material discrepancy. C. Accept a loading condition based only on even draft readings.
Correct Answer: A D. Move heavy cargo higher to free lower deck space without recalculation.
Explanation: This answer uses verified evidence before action, which reduces the chance Correct Answer: B
of masking the real problem and supports a traceable decision about bridge resource Explanation: The selected action best supports safe, compliant, and technically sound
management. performance because it addresses Cargo operations, stowage, securing and hazards
relevant to vessel type using observable evidence rather than convenience.
5. An alarm occurs during machinery operation. Which troubleshooting approach is
most appropriate for Chartwork, publications, voyage planning and position 14. Ballast is proposed to correct a list. Under these conditions, when should
fixing? the issue involving Cargo operations be escalated?
A. Discharge a small contaminant amount rather than initiating the response procedure. A. Move heavy cargo higher to free lower deck space without recalculation.
B. Make an unverified ballast change solely to improve trim. B. Correct a list by moving weight without checking stability impact.
C. Depart with required safety equipment inoperative because the voyage is short. C. Accept a loading condition based only on even draft readings.
D. Verify the loading and stability data before accepting a cargo or ballast change. D. Recalculate the relevant stability condition before accepting the loading or
Correct Answer: D ballast change.
Explanation: The selected action best supports safe, compliant, and technically sound Correct Answer: D
performance because it addresses Chartwork, publications, voyage planning and position Explanation: A defensible professional decision should be based on current evidence and
fixing using observable evidence rather than convenience. applicable criteria. The other choices rely on assumption, remove safeguards, or change
conditions before the cause is understood.
6. A vessel approaches restricted visibility with traffic nearby. Which action
best supports a defensible decision about voyage planning? 15. A navigation fix does not agree with another available source. Which
A. Cross-check navigation sources and resolve a position discrepancy before relying on comparison is most useful for interpreting hazards relevant to vessel type?
the fix. A. Review stability data, loading condition and free-surface effects and compare the
B. Use a single navigation source after another source shows a material discrepancy. findings with the applicable criteria.
C. Assume constant bearing is harmless when range is decreasing. B. Make an unverified ballast change solely to improve trim.
D. Silence a machinery alarm and continue at the same load without investigation. C. Depart with required safety equipment inoperative because the voyage is short.
Correct Answer: A D. Discharge a small contaminant amount rather than initiating the response procedure.
Explanation: A defensible professional decision should be based on current evidence and Correct Answer: A
applicable criteria. The other choices rely on assumption, remove safeguards, or change Explanation: This is the most appropriate option because it connects the observed
conditions before the cause is understood. condition to the governing requirement and leaves a record of why the decision was made.
7. A vessel must plan a passage through constrained waters. A change affecting 16. An enclosed-space task is proposed without a completed entry check; the
position fixing is being considered. How should it be handled? vessel draft increases after cargo loading. Which action best distinguishes the
A. Depart with required safety equipment inoperative because the voyage is short. underlying cause from a symptom in Marine safety systems, lifesaving appliances
B. Discharge a small contaminant amount rather than initiating the response procedure. and emergency procedures?
C. Make an unverified ballast change solely to improve trim. A. Continue the transfer until the planned quantity is complete.
D. Verify the loading and stability data before accepting a cargo or ballast change. B. Correct a required safety-equipment deficiency and verify readiness before
Correct Answer: D proceeding, then confirm that the corrective action is effective before closure.
Explanation: This is the most appropriate option because it connects the observed C. Depart with required safety equipment unavailable because conditions are calm.
condition to the governing requirement and leaves a record of why the decision was made. D. Enter an enclosed space based only on a prior atmosphere test.
Correct Answer: B
8. A position fix disagrees with the expected track; a target bearing remains
Explanation: The correct choice follows a verify-act-confirm sequence. That is more
nearly constant as range decreases. The abnormal condition directly affects
reliable than bypassing controls or making multiple uncontrolled changes.
Meteorology, tides, currents and environmental conditions affecting safe
navigation. What is the most appropriate response? 17. Required lifesaving equipment is not ready before departure. Which response
A. Assume there is no risk because the other vessel is visually small. is most consistent with the professional or compliance requirements governing
B. Use all available means to determine collision risk and take early, substantial Marine safety systems?
action consistent with the applicable navigation rules. A. Enter an enclosed space based only on a prior atmosphere test.
C. Continue on an uncertain position until the next scheduled fix. B. Correct a required safety-equipment deficiency and verify readiness before
D. Make a series of small course changes that are difficult to detect. proceeding.
Correct Answer: B C. Wash a small spill overboard rather than initiating the response process.
Explanation: The correct choice follows a verify-act-confirm sequence. That is more D. Depart with required safety equipment unavailable because conditions are calm.
reliable than bypassing controls or making multiple uncontrolled changes. Correct Answer: B
Explanation: The strongest exam-style response is the one that controls immediate risk,
9. The vessel approaches a traffic or pilotage constraint. Which documentation
checks the relevant condition, and then acts within the defined requirements for Marine
approach best supports traceability for environmental conditions affecting safe safety systems.
navigation?
A. Record the observed condition, supporting evidence, decision and responsible 18. An alarm occurs during machinery operation. Which handoff practice best
follow-up; communicate any unresolved risk to the next responsible person. reduces error risk for lifesaving appliances?
B. Make a series of small course changes that are difficult to detect. A. Record the observed condition, supporting evidence, decision and responsible
C. Rely on one electronic source when independent information conflicts. follow-up; communicate any unresolved risk to the next responsible person.
D. Continue on an uncertain position until the next scheduled fix. B. Use a single navigation source after another source shows a material discrepancy.
Correct Answer: A C. Assume constant bearing is harmless when range is decreasing.
Explanation: The strongest exam-style response is the one that controls immediate risk, D. Silence a machinery alarm and continue at the same load without investigation.
checks the relevant condition, and then acts within the defined requirements for Correct Answer: A
environmental conditions affecting safe navigation. Explanation: The correct response protects the integrity of the process: establish the
facts, apply the appropriate control, and verify the result before closure.
1
,USCG Rules of the Road Exam Module International and Inland | Practice Exam Q&A
19. An enclosed-space task is proposed without a completed entry check. Which 28. A pollution-prevention barrier is found compromised during transfer;
decision about emergency procedures is best supported by the available evidence? visibility falls below one nautical mile. The abnormal condition directly affects
A. Wash a small spill overboard rather than initiating the response process. Pollution prevention. What is the most appropriate response?
B. Enter an enclosed space based only on a prior atmosphere test. A. Stop or control the operation, protect personnel and follow the required emergency
C. Continue the transfer until the planned quantity is complete. or pollution-response procedure.
D. Correct a required safety-equipment deficiency and verify readiness before B. Continue the transfer until the planned quantity is complete.
proceeding. C. Depart with required safety equipment unavailable because conditions are calm.
Correct Answer: D D. Enter an enclosed space based only on a prior atmosphere test.
Explanation: This approach preserves control of the situation while producing evidence Correct Answer: A
that can confirm whether the action actually corrected the issue involving emergency Explanation: This answer uses verified evidence before action, which reduces the chance
procedures. of masking the real problem and supports a traceable decision about Pollution
prevention.
20. A machinery temperature rises above its normal operating trend; a machinery
temperature rises 20 C above its normal trend. Which review step adds the most 29. A towing or deck operation is affected by changing weather. Which
value before closing work involving Fire prevention, firefighting, damage control documentation approach best supports traceability for MARPOL principles?
and abandonment procedures? A. Discharge a small contaminant amount rather than initiating the response procedure.
A. Reset a protective trip repeatedly without finding the cause. B. Make an unverified ballast change solely to improve trim.
B. Disable an alarm that is interrupting operations. C. Depart with required safety equipment inoperative because the voyage is short.
C. Compare operating pressures/temperatures, equipment status and recent changes to D. Record the observed condition, supporting evidence, decision and responsible
isolate the fault safely, then confirm that the corrective action is effective before follow-up; communicate any unresolved risk to the next responsible person.
closure. Correct Answer: D
D. Increase machinery load to see whether the abnormal indication clears. Explanation: The selected action best supports safe, compliant, and technically sound
Correct Answer: C performance because it addresses MARPOL principles using observable evidence rather than
Explanation: This answer uses verified evidence before action, which reduces the chance convenience.
of masking the real problem and supports a traceable decision about Fire prevention,
30. A spill occurs during machinery or cargo operations. Which action is most
firefighting, damage control and abandonment procedures.
likely to prevent recurrence of a problem involving environmental protection?
21. A towing or deck operation is affected by changing weather. With respect to A. Correct a required safety-equipment deficiency and verify readiness before
Fire prevention, what is the best FIRST action? proceeding, then confirm that the corrective action is effective before closure.
A. Verify the loading and stability data before accepting a cargo or ballast change. B. Depart with required safety equipment unavailable because conditions are calm.
B. Make an unverified ballast change solely to improve trim. C. Continue the transfer until the planned quantity is complete.
C. Depart with required safety equipment inoperative because the voyage is short. D. Wash a small spill overboard rather than initiating the response process.
D. Discharge a small contaminant amount rather than initiating the response procedure. Correct Answer: A
Correct Answer: A Explanation: A defensible professional decision should be based on current evidence and
Explanation: The selected action best supports safe, compliant, and technically sound applicable criteria. The other choices rely on assumption, remove safeguards, or change
performance because it addresses Fire prevention using observable evidence rather than conditions before the cause is understood.
convenience.
31. Visibility falls and several targets appear on radar. Which sequence is most
22. An electrical protective device trips repeatedly. Which evidence is most appropriate when carrying out STCW competence, drills, records and professional
important when evaluating damage control? watchkeeping standards?
A. Disable an alarm that is interrupting operations. A. Rely on one electronic source when independent information conflicts.
B. Review pressure, temperature, lubrication, electrical load, alarm history and B. Cross-check position, traffic and navigation sources before altering the passage
equipment status and compare the findings with the applicable criteria. plan, then verify the resulting state before moving to the next step.
C. Reset a protective trip repeatedly without finding the cause. C. Make a series of small course changes that are difficult to detect.
D. Make several plant changes simultaneously before recording the original condition. D. Assume there is no risk because the other vessel is visually small.
Correct Answer: B Correct Answer: B
Explanation: A defensible professional decision should be based on current evidence and Explanation: This is the most appropriate option because it connects the observed
applicable criteria. The other choices rely on assumption, remove safeguards, or change condition to the governing requirement and leaves a record of why the decision was made.
conditions before the cause is understood.
32. A vessel approaches restricted visibility with traffic nearby; visibility
23. A pre-departure check identifies a safety-equipment deficiency. Which falls below one nautical mile. Which choice demonstrates the strongest control of
response best controls the primary risk associated with abandonment procedures? STCW competence?
A. Discharge a small contaminant amount rather than initiating the response procedure. A. Silence a machinery alarm and continue at the same load without investigation.
B. Make an unverified ballast change solely to improve trim. B. Use a single navigation source after another source shows a material discrepancy.
C. Depart with required safety equipment inoperative because the voyage is short. C. Assume constant bearing is harmless when range is decreasing.
D. Verify the loading and stability data before accepting a cargo or ballast change. D. Cross-check navigation sources and resolve a position discrepancy before relying on
Correct Answer: D the fix.
Explanation: This is the most appropriate option because it connects the observed Correct Answer: D
condition to the governing requirement and leaves a record of why the decision was made. Explanation: The correct choice follows a verify-act-confirm sequence. That is more
reliable than bypassing controls or making multiple uncontrolled changes.
24. A pump loses discharge pressure while demand remains constant; a navigation
fix differs by 0.8 nautical mile from another source. Before proceeding with work 33. Another vessel remains on nearly constant bearing while range decreases. What
involving Marine engineering or electrical systems applicable to the named is required before accepting the result related to professional watchkeeping
officer/module, what should be verified? standards?
A. Reset a protective trip repeatedly without finding the cause. A. Make a series of small course changes that are difficult to detect.
B. Disable an alarm that is interrupting operations. B. Review position sources, charted hazards, depth/under-keel clearance and traffic
C. Review pressure, temperature, lubrication, electrical load, alarm history and and compare the findings with the applicable criteria.
equipment status and compare the findings with the applicable criteria. C. Rely on one electronic source when independent information conflicts.
D. Increase machinery load to see whether the abnormal indication clears. D. Continue on an uncertain position until the next scheduled fix.
Correct Answer: C Correct Answer: B
Explanation: The correct choice follows a verify-act-confirm sequence. That is more Explanation: The strongest exam-style response is the one that controls immediate risk,
reliable than bypassing controls or making multiple uncontrolled changes. checks the relevant condition, and then acts within the defined requirements for
professional watchkeeping standards.
25. A machinery temperature rises above its normal operating trend. Which
troubleshooting approach is most appropriate for Marine engineering? 34. Another vessel remains on nearly constant bearing while range decreases.
A. Increase machinery load to see whether the abnormal indication clears. Under these conditions, when should the issue involving Navigation rules,
B. Compare operating pressures/temperatures, equipment status and recent changes to watchkeeping responsibilities and bridge resource management be escalated?
isolate the fault safely. A. Continue on an uncertain position until the next scheduled fix.
C. Make several plant changes simultaneously before recording the original condition. B. Use all available means to determine collision risk and take early, substantial
D. Disable an alarm that is interrupting operations. action consistent with the applicable navigation rules.
Correct Answer: B C. Assume there is no risk because the other vessel is visually small.
Explanation: The strongest exam-style response is the one that controls immediate risk, D. Rely on one electronic source when independent information conflicts.
checks the relevant condition, and then acts within the defined requirements for Marine Correct Answer: B
engineering. Explanation: The correct response protects the integrity of the process: establish the
facts, apply the appropriate control, and verify the result before closure.
26. An engineering watch observes an abnormal temperature or pressure. Which
action best supports a defensible decision about electrical systems applicable to 35. A position fix disagrees with the expected track. Which comparison is most
the named officer/module? useful for interpreting Navigation rules?
A. Silence a machinery alarm and continue at the same load without investigation. A. Rely on one electronic source when independent information conflicts.
B. Use a single navigation source after another source shows a material discrepancy. B. Make a series of small course changes that are difficult to detect.
C. Assume constant bearing is harmless when range is decreasing. C. Review position sources, charted hazards, depth/under-keel clearance and traffic
D. Cross-check navigation sources and resolve a position discrepancy before relying on and compare the findings with the applicable criteria.
the fix. D. Assume there is no risk because the other vessel is visually small.
Correct Answer: D Correct Answer: C
Explanation: The correct response protects the integrity of the process: establish the Explanation: This approach preserves control of the situation while producing evidence
facts, apply the appropriate control, and verify the result before closure. that can confirm whether the action actually corrected the issue involving Navigation
rules.
27. A spill occurs during machinery or cargo operations. A change affecting
Pollution prevention, MARPOL principles and environmental protection is being 36. A position fix disagrees with the expected track; a navigation fix differs by
considered. How should it be handled? 0.8 nautical mile from another source. Which action best distinguishes the
A. Correct a required safety-equipment deficiency and verify readiness before underlying cause from a symptom in watchkeeping responsibilities?
proceeding. A. Cross-check position, traffic and navigation sources before altering the passage
B. Wash a small spill overboard rather than initiating the response process. plan, then confirm that the corrective action is effective before closure.
C. Enter an enclosed space based only on a prior atmosphere test. B. Assume there is no risk because the other vessel is visually small.
D. Continue the transfer until the planned quantity is complete. C. Continue on an uncertain position until the next scheduled fix.
Correct Answer: A D. Make a series of small course changes that are difficult to detect.
Explanation: This approach preserves control of the situation while producing evidence Correct Answer: A
that can confirm whether the action actually corrected the issue involving Pollution Explanation: This answer uses verified evidence before action, which reduces the chance
prevention, MARPOL principles and environmental protection. of masking the real problem and supports a traceable decision about watchkeeping
responsibilities.
2
, USCG Rules of the Road Exam Module International and Inland | Practice Exam Q&A
37. An engineering watch observes an abnormal temperature or pressure. Which 46. Cargo loading changes the vessel's vertical center of gravity. Which action
response is most consistent with the professional or compliance requirements best supports a defensible decision about Cargo operations, stowage, securing and
governing bridge resource management? hazards relevant to vessel type?
A. Depart with required safety equipment inoperative because the voyage is short. A. Move heavy cargo higher to free lower deck space without recalculation.
B. Discharge a small contaminant amount rather than initiating the response procedure. B. Correct a list by moving weight without checking stability impact.
C. Make an unverified ballast change solely to improve trim. C. Accept a loading condition based only on even draft readings.
D. Verify the loading and stability data before accepting a cargo or ballast change. D. Recalculate the relevant stability condition before accepting the loading or
Correct Answer: D ballast change.
Explanation: The selected action best supports safe, compliant, and technically sound Correct Answer: D
performance because it addresses bridge resource management using observable evidence Explanation: A defensible professional decision should be based on current evidence and
rather than convenience. applicable criteria. The other choices rely on assumption, remove safeguards, or change
conditions before the cause is understood.
38. A pollution-prevention control is compromised during operations. Which
handoff practice best reduces error risk for Chartwork, publications, voyage 47. A deck load is shifted to a higher position. A change affecting Cargo
planning and position fixing? operations is being considered. How should it be handled?
A. Record the observed condition, supporting evidence, decision and responsible A. Accept a loading condition based only on even draft readings.
follow-up; communicate any unresolved risk to the next responsible person. B. Ignore slack-tank effects because total liquid weight is unchanged.
B. Silence a machinery alarm and continue at the same load without investigation. C. Account for free-surface and weight-shift effects when evaluating stability and
C. Use a single navigation source after another source shows a material discrepancy. trim.
D. Assume constant bearing is harmless when range is decreasing. D. Correct a list by moving weight without checking stability impact.
Correct Answer: A Correct Answer: C
Explanation: A defensible professional decision should be based on current evidence and Explanation: This is the most appropriate option because it connects the observed
applicable criteria. The other choices rely on assumption, remove safeguards, or change condition to the governing requirement and leaves a record of why the decision was made.
conditions before the cause is understood.
48. A deck watch detects a change in bearing to another vessel; a target bearing
39. An engineering watch observes an abnormal temperature or pressure. Which remains nearly constant as range decreases. The abnormal condition directly
decision about voyage planning is best supported by the available evidence? affects hazards relevant to vessel type. What is the most appropriate response?
A. Make an unverified ballast change solely to improve trim. A. Use a single navigation source after another source shows a material discrepancy.
B. Verify the loading and stability data before accepting a cargo or ballast change. B. Cross-check navigation sources and resolve a position discrepancy before relying on
C. Depart with required safety equipment inoperative because the voyage is short. the fix.
D. Discharge a small contaminant amount rather than initiating the response procedure. C. Assume constant bearing is harmless when range is decreasing.
Correct Answer: B D. Silence a machinery alarm and continue at the same load without investigation.
Explanation: This is the most appropriate option because it connects the observed Correct Answer: B
condition to the governing requirement and leaves a record of why the decision was made. Explanation: The correct choice follows a verify-act-confirm sequence. That is more
reliable than bypassing controls or making multiple uncontrolled changes.
40. A navigation fix does not agree with another available source; the vessel
draft increases after cargo loading. Which review step adds the most value before 49. A spill occurs during machinery or cargo operations. Which documentation
closing work involving position fixing? approach best supports traceability for Marine safety systems, lifesaving
A. Assume constant bearing is harmless when range is decreasing. appliances and emergency procedures?
B. Silence a machinery alarm and continue at the same load without investigation. A. Enter an enclosed space based only on a prior atmosphere test.
C. Verify the loading and stability data before accepting a cargo or ballast change, B. Record the observed condition, supporting evidence, decision and responsible
then confirm that the corrective action is effective before closure. follow-up; communicate any unresolved risk to the next responsible person.
D. Use a single navigation source after another source shows a material discrepancy. C. Wash a small spill overboard rather than initiating the response process.
Correct Answer: C D. Depart with required safety equipment unavailable because conditions are calm.
Explanation: The correct choice follows a verify-act-confirm sequence. That is more Correct Answer: B
reliable than bypassing controls or making multiple uncontrolled changes. Explanation: The strongest exam-style response is the one that controls immediate risk,
checks the relevant condition, and then acts within the defined requirements for Marine
41. The vessel approaches a traffic or pilotage constraint. With respect to safety systems, lifesaving appliances and emergency procedures.
Meteorology, tides, currents and environmental conditions affecting safe
navigation, what is the best FIRST action? 50. An enclosed-space task is proposed without a completed entry check. Which
A. Cross-check position, traffic and navigation sources before altering the passage action is most likely to prevent recurrence of a problem involving Marine safety
plan. systems?
B. Make a series of small course changes that are difficult to detect. A. Depart with required safety equipment unavailable because conditions are calm.
C. Rely on one electronic source when independent information conflicts. B. Continue the transfer until the planned quantity is complete.
D. Continue on an uncertain position until the next scheduled fix. C. Correct a required safety-equipment deficiency and verify readiness before
Correct Answer: A proceeding, then confirm that the corrective action is effective before closure.
Explanation: The strongest exam-style response is the one that controls immediate risk, D. Wash a small spill overboard rather than initiating the response process.
checks the relevant condition, and then acts within the defined requirements for Correct Answer: C
Meteorology, tides, currents and environmental conditions affecting safe navigation. Explanation: The correct response protects the integrity of the process: establish the
facts, apply the appropriate control, and verify the result before closure.
42. Another vessel remains on nearly constant bearing while range decreases.
Which evidence is most important when evaluating environmental conditions 51. A pollution-prevention control is compromised during operations. Which
affecting safe navigation? sequence is most appropriate when carrying out lifesaving appliances?
A. Continue on an uncertain position until the next scheduled fix. A. Make an unverified ballast change solely to improve trim.
B. Review bearing/range trend, own-ship course/speed, target aspect and applicable B. Depart with required safety equipment inoperative because the voyage is short.
rule and compare the findings with the applicable criteria. C. Discharge a small contaminant amount rather than initiating the response procedure.
C. Assume there is no risk because the other vessel is visually small. D. Verify the loading and stability data before accepting a cargo or ballast change,
D. Rely on one electronic source when independent information conflicts. then verify the resulting state before moving to the next step.
Correct Answer: B Correct Answer: D
Explanation: The correct response protects the integrity of the process: establish the Explanation: This approach preserves control of the situation while producing evidence
facts, apply the appropriate control, and verify the result before closure. that can confirm whether the action actually corrected the issue involving lifesaving
appliances.
43. Ballast is proposed to correct a list. Which response best controls the
primary risk associated with Ship stability, trim, loading and basic stability 52. A spill occurs during machinery or cargo operations; the vessel draft
calculations? increases after cargo loading. Which choice demonstrates the strongest control of
A. Accept a loading condition based only on even draft readings. emergency procedures?
B. Account for free-surface and weight-shift effects when evaluating stability and A. Continue the transfer until the planned quantity is complete.
trim. B. Depart with required safety equipment unavailable because conditions are calm.
C. Ignore slack-tank effects because total liquid weight is unchanged. C. Enter an enclosed space based only on a prior atmosphere test.
D. Correct a list by moving weight without checking stability impact. D. Stop or control the operation, protect personnel and follow the required emergency
Correct Answer: B or pollution-response procedure.
Explanation: This approach preserves control of the situation while producing evidence Correct Answer: D
that can confirm whether the action actually corrected the issue involving Ship Explanation: This answer uses verified evidence before action, which reduces the chance
stability, trim, loading and basic stability calculations. of masking the real problem and supports a traceable decision about emergency
procedures.
44. A slack tank creates additional free-surface effect; a machinery temperature
rises 20 C above its normal trend. Before proceeding with work involving Ship 53. A pump loses discharge pressure while demand remains constant. What is
stability, what should be verified? required before accepting the result related to Fire prevention, firefighting,
A. Correct a list by moving weight without checking stability impact. damage control and abandonment procedures?
B. Review displacement, weight location, GM/stability data and tank condition and A. Increase machinery load to see whether the abnormal indication clears.
compare the findings with the applicable criteria. B. Make several plant changes simultaneously before recording the original condition.
C. Move heavy cargo higher to free lower deck space without recalculation. C. Review protective-device indication, circuit condition and recent configuration
D. Ignore slack-tank effects because total liquid weight is unchanged. change and compare the findings with the applicable criteria.
Correct Answer: B D. Disable an alarm that is interrupting operations.
Explanation: This answer uses verified evidence before action, which reduces the chance Correct Answer: C
of masking the real problem and supports a traceable decision about Ship stability. Explanation: The selected action best supports safe, compliant, and technically sound
performance because it addresses Fire prevention, firefighting, damage control and
45. Ballast is proposed to correct a list. Which troubleshooting approach is most abandonment procedures using observable evidence rather than convenience.
appropriate for basic stability calculations?
A. Ignore slack-tank effects because total liquid weight is unchanged. 54. A vessel approaches restricted visibility with traffic nearby. Under these
B. Account for free-surface and weight-shift effects when evaluating stability and conditions, when should the issue involving Fire prevention be escalated?
trim. A. Use a single navigation source after another source shows a material discrepancy.
C. Accept a loading condition based only on even draft readings. B. Cross-check navigation sources and resolve a position discrepancy before relying on
D. Move heavy cargo higher to free lower deck space without recalculation. the fix.
Correct Answer: B C. Assume constant bearing is harmless when range is decreasing.
Explanation: The selected action best supports safe, compliant, and technically sound D. Silence a machinery alarm and continue at the same load without investigation.
performance because it addresses basic stability calculations using observable evidence Correct Answer: B
rather than convenience. Explanation: A defensible professional decision should be based on current evidence and
applicable criteria. The other choices rely on assumption, remove safeguards, or change
conditions before the cause is understood.
3
