USCG General Subjects Exam Module Designated
Duty Engineer Unlimited
ID14102
,USCG General Subjects Exam Module Designated Duty Engineer Unlimited
1. An engineering watch observes an abnormal temperature or pressure. With 10. A stability calculation is required after cargo or ballast changes. Which
respect to Communications, GMDSS awareness and distress/urgency procedures, what action is most likely to prevent recurrence of a problem involving bridge
is the best FIRST action? resource management?
A. Contain and report a pollution risk using the required onboard response and A. Verify the loading and stability data before accepting a cargo or ballast change,
documentation process. then confirm that the corrective action is effective before closure.
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. Discharge a small contaminant amount rather than initiating the response procedure. D. Silence a machinery alarm and continue at the same load without investigation.
Correct Answer: A Correct Answer: A
Explanation: This approach preserves control of the situation while producing evidence Explanation: This answer uses verified evidence before action, which reduces the chance
that can confirm whether the action actually corrected the issue involving of masking the real problem and supports a traceable decision about bridge resource
Communications, GMDSS awareness and distress/urgency procedures. management.
2. A towing or deck operation is affected by changing weather. Which evidence is 11. A navigation fix does not agree with another available source. Which sequence
most important when evaluating GMDSS awareness? is most appropriate when carrying out Chartwork, publications, voyage planning
A. Assume constant bearing is harmless when range is decreasing. and position fixing?
B. Silence a machinery alarm and continue at the same load without investigation. A. Verify the loading and stability data before accepting a cargo or ballast change,
C. Review position, course, speed, traffic and applicable navigation rules and compare then verify the resulting state before moving to the next step.
the findings with the applicable criteria. B. Depart with required safety equipment inoperative because the voyage is short.
D. Use a single navigation source after another source shows a material discrepancy. C. Discharge a small contaminant amount rather than initiating the response procedure.
Correct Answer: C D. Make an unverified ballast change solely to improve trim.
Explanation: This answer uses verified evidence before action, which reduces the chance Correct Answer: A
of masking the real problem and supports a traceable decision about GMDSS awareness. Explanation: The selected action best supports safe, compliant, and technically sound
performance because it addresses Chartwork, publications, voyage planning and position
3. A pre-departure check identifies a safety-equipment deficiency. Which response fixing using observable evidence rather than convenience.
best controls the primary risk associated with distress/urgency procedures?
A. Discharge a small contaminant amount rather than initiating the response procedure. 12. A stability calculation is required after cargo or ballast changes; a
B. Make an unverified ballast change solely to improve trim. machinery temperature rises 20 C above its normal trend. Which choice
C. Depart with required safety equipment inoperative because the voyage is short. demonstrates the strongest control of voyage planning?
D. Contain and report a pollution risk using the required onboard response and A. Silence a machinery alarm and continue at the same load without investigation.
documentation process. B. Use a single navigation source after another source shows a material discrepancy.
Correct Answer: D C. Assume constant bearing is harmless when range is decreasing.
Explanation: The selected action best supports safe, compliant, and technically sound D. Respond to an abnormal machinery indication by protecting the plant, confirming the
performance because it addresses distress/urgency procedures using observable evidence indication and following the operating procedure.
rather than convenience. Correct Answer: D
Explanation: A defensible professional decision should be based on current evidence and
4. A position fix disagrees with the expected track; a navigation fix differs by
applicable criteria. The other choices rely on assumption, remove safeguards, or change
0.8 nautical mile from another source. Before proceeding with work involving conditions before the cause is understood.
Collision avoidance, maneuvering, pilotage and restricted-water operations, what
should be verified? 13. A towing or deck operation is affected by changing weather. What is required
A. Continue on an uncertain position until the next scheduled fix. before accepting the result related to position fixing?
B. Review bearing/range trend, own-ship course/speed, target aspect and applicable A. Review stability data, loading condition and free-surface effects and compare the
rule and compare the findings with the applicable criteria. findings with the applicable criteria.
C. Assume there is no risk because the other vessel is visually small. B. Make an unverified ballast change solely to improve trim.
D. Make a series of small course changes that are difficult to detect. C. Depart with required safety equipment inoperative because the voyage is short.
Correct Answer: B 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.
5. Visibility falls and several targets appear on radar. Which troubleshooting 14. A position fix disagrees with the expected track. Under these conditions,
approach is most appropriate for Collision avoidance? when should the issue involving Meteorology, tides, currents and environmental
A. Rely on one electronic source when independent information conflicts. conditions affecting safe navigation be escalated?
B. Cross-check position, traffic and navigation sources before altering the passage A. Use all available means to determine collision risk and take early, substantial
plan. action consistent with the applicable navigation rules.
C. Make a series of small course changes that are difficult to detect. B. Assume there is no risk because the other vessel is visually small.
D. Continue on an uncertain position until the next scheduled fix. C. Continue on an uncertain position until the next scheduled fix.
Correct Answer: B D. Rely on one electronic source when independent information conflicts.
Explanation: This is the most appropriate option because it connects the observed Correct Answer: A
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.
6. A vessel must plan a passage through constrained waters. Which action best
supports a defensible decision about restricted-water operations? 15. The vessel approaches a traffic or pilotage constraint. Which comparison is
A. Silence a machinery alarm and continue at the same load without investigation. most useful for interpreting environmental conditions affecting safe navigation?
B. Use a single navigation source after another source shows a material discrepancy. A. Review position sources, charted hazards, depth/under-keel clearance and traffic
C. Respond to an abnormal machinery indication by protecting the plant, confirming the and compare the findings with the applicable criteria.
indication and following the operating procedure. B. Make a series of small course changes that are difficult to detect.
D. Assume constant bearing is harmless when range is decreasing. C. Rely on one electronic source when independent information conflicts.
Correct Answer: C D. Assume there is no risk because the other vessel is visually small.
Explanation: The correct choice follows a verify-act-confirm sequence. That is more Correct Answer: A
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
7. The vessel approaches a traffic or pilotage constraint. A change affecting environmental conditions affecting safe navigation.
Navigation rules, watchkeeping responsibilities and bridge resource management is
being considered. How should it be handled? 16. A slack tank creates additional free-surface effect; a machinery temperature
A. Make a series of small course changes that are difficult to detect. rises 20 C above its normal trend. Which action best distinguishes the underlying
B. Rely on one electronic source when independent information conflicts. cause from a symptom in Ship stability, trim, loading and basic stability
C. Assume there is no risk because the other vessel is visually small. calculations?
D. Cross-check position, traffic and navigation sources before altering the passage A. Move heavy cargo higher to free lower deck space without recalculation.
plan. B. Correct a list by moving weight without checking stability impact.
Correct Answer: D C. Account for free-surface and weight-shift effects when evaluating stability and
Explanation: The strongest exam-style response is the one that controls immediate risk, trim, then confirm that the corrective action is effective before closure.
checks the relevant condition, and then acts within the defined requirements for D. Ignore slack-tank effects because total liquid weight is unchanged.
Navigation rules, watchkeeping responsibilities and bridge resource management. Correct Answer: C
Explanation: The correct response protects the integrity of the process: establish the
8. Visibility falls and several targets appear on radar; a machinery temperature
facts, apply the appropriate control, and verify the result before closure.
rises 20 C above its normal trend. The abnormal condition directly affects
Navigation rules. What is the most appropriate response? 17. Cargo loading changes the vessel's vertical center of gravity. Which response
A. Continue on an uncertain position until the next scheduled fix. is most consistent with the professional or compliance requirements governing
B. Assume there is no risk because the other vessel is visually small. Ship stability?
C. Use all available means to determine collision risk and take early, substantial A. Accept a loading condition based only on even draft readings.
action consistent with the applicable navigation rules. B. Ignore slack-tank effects because total liquid weight is unchanged.
D. Make a series of small course changes that are difficult to detect. C. Account for free-surface and weight-shift effects when evaluating stability and
Correct Answer: C trim.
Explanation: The correct response protects the integrity of the process: establish the D. Move heavy cargo higher to free lower deck space without recalculation.
facts, apply the appropriate control, and verify the result before closure. Correct Answer: C
Explanation: This approach preserves control of the situation while producing evidence
9. Visibility falls and several targets appear on radar. Which documentation
that can confirm whether the action actually corrected the issue involving Ship
approach best supports traceability for watchkeeping responsibilities? stability.
A. Rely on one electronic source when independent information conflicts.
B. Make a series of small course changes that are difficult to detect. 18. A slack tank creates additional free-surface effect. Which handoff practice
C. Continue on an uncertain position until the next scheduled fix. best reduces error risk for basic stability calculations?
D. Record the observed condition, supporting evidence, decision and responsible A. Correct a list by moving weight without checking stability impact.
follow-up; communicate any unresolved risk to the next responsible person. B. Move heavy cargo higher to free lower deck space without recalculation.
Correct Answer: D C. Record the observed condition, supporting evidence, decision and responsible
Explanation: This approach preserves control of the situation while producing evidence follow-up; communicate any unresolved risk to the next responsible person.
that can confirm whether the action actually corrected the issue involving watchkeeping D. Accept a loading condition based only on even draft readings.
responsibilities. Correct Answer: C
Explanation: This answer uses verified evidence before action, which reduces the chance
of masking the real problem and supports a traceable decision about basic stability
calculations.
1
,USCG General Subjects Exam Module Designated Duty Engineer Unlimited
19. A deck load is shifted to a higher position. Which decision about Cargo 28. An electrical protective device trips repeatedly; the vessel draft increases
operations, stowage, securing and hazards relevant to vessel type is best after cargo loading. The abnormal condition directly affects damage control. What
supported by the available evidence? is the most appropriate response?
A. Ignore slack-tank effects because total liquid weight is unchanged. A. Disable an alarm that is interrupting operations.
B. Accept a loading condition based only on even draft readings. B. Protect the plant, verify the indication and diagnose the affected system before
C. Account for free-surface and weight-shift effects when evaluating stability and resetting or increasing load.
trim. C. Reset a protective trip repeatedly without finding the cause.
D. Correct a list by moving weight without checking stability impact. D. Increase machinery load to see whether the abnormal indication clears.
Correct Answer: C Correct Answer: B
Explanation: The selected action best supports safe, compliant, and technically sound Explanation: A defensible professional decision should be based on current evidence and
performance because it addresses Cargo operations, stowage, securing and hazards applicable criteria. The other choices rely on assumption, remove safeguards, or change
relevant to vessel type using observable evidence rather than convenience. conditions before the cause is understood.
20. Ballast is proposed to correct a list; the vessel draft increases after cargo 29. An alarm occurs during machinery operation. Which documentation approach best
loading. Which review step adds the most value before closing work involving supports traceability for abandonment procedures?
Cargo operations? 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. Account for free-surface and weight-shift effects when evaluating stability and C. Record the observed condition, supporting evidence, decision and responsible
trim, then confirm that the corrective action is effective before closure. follow-up; communicate any unresolved risk to the next responsible person.
C. Correct a list by moving weight without checking stability impact. D. Make an unverified ballast change solely to improve trim.
D. Ignore slack-tank effects because total liquid weight is unchanged. Correct Answer: C
Correct Answer: B Explanation: This is the most appropriate option because it connects the observed
Explanation: A defensible professional decision should be based on current evidence and condition to the governing requirement and leaves a record of why the decision was made.
applicable criteria. The other choices rely on assumption, remove safeguards, or change
conditions before the cause is understood.
30. A pump loses discharge pressure while demand remains constant. Which action
is most likely to prevent recurrence of a problem involving Marine engineering or
21. A vessel approaches restricted visibility with traffic nearby. With respect electrical systems applicable to the named officer/module?
to hazards relevant to vessel type, what is the best FIRST action? A. Compare operating pressures/temperatures, equipment status and recent changes to
A. Discharge a small contaminant amount rather than initiating the response procedure. isolate the fault safely, then confirm that the corrective action is effective before
B. Make an unverified ballast change solely to improve trim. closure.
C. Contain and report a pollution risk using the required onboard response and B. Reset a protective trip repeatedly without finding the cause.
documentation process. C. Disable an alarm that is interrupting operations.
D. Depart with required safety equipment inoperative because the voyage is short. D. Make several plant changes simultaneously before recording the original condition.
Correct Answer: C Correct Answer: A
Explanation: This is the most appropriate option because it connects the observed Explanation: The correct choice follows a verify-act-confirm sequence. That is more
condition to the governing requirement and leaves a record of why the decision was made. reliable than bypassing controls or making multiple uncontrolled changes.
22. An enclosed-space task is proposed without a completed entry check. Which 31. A machinery temperature rises above its normal operating trend. Which
evidence is most important when evaluating Marine safety systems, lifesaving sequence is most appropriate when carrying out Marine engineering?
appliances and emergency procedures? A. Compare operating pressures/temperatures, equipment status and recent changes to
A. Continue the transfer until the planned quantity is complete. isolate the fault safely, then verify the resulting state before moving to the next
B. Depart with required safety equipment unavailable because conditions are calm. step.
C. Wash a small spill overboard rather than initiating the response process. B. Increase machinery load to see whether the abnormal indication clears.
D. Review source/quantity of release, containment condition, notifications and C. Make several plant changes simultaneously before recording the original condition.
response equipment and compare the findings with the applicable criteria. D. Reset a protective trip repeatedly without finding the cause.
Correct Answer: D Correct Answer: A
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 Marine
engineering.
23. Required lifesaving equipment is not ready before departure. Which response
best controls the primary risk associated with Marine safety systems? 32. A vessel must plan a passage through constrained waters; visibility falls
A. Enter an enclosed space based only on a prior atmosphere test. below one nautical mile. Which choice demonstrates the strongest control of
B. Wash a small spill overboard rather than initiating the response process. electrical systems applicable to the named officer/module?
C. Continue the transfer until the planned quantity is complete. A. Assume constant bearing is harmless when range is decreasing.
D. Correct a required safety-equipment deficiency and verify readiness before B. Respond to an abnormal machinery indication by protecting the plant, confirming the
proceeding. indication and following the operating procedure.
Correct Answer: D C. Silence a machinery alarm and continue at the same load without investigation.
Explanation: The strongest exam-style response is the one that controls immediate risk, D. Use a single navigation source after another source shows a material discrepancy.
checks the relevant condition, and then acts within the defined requirements for Marine Correct Answer: B
safety systems. Explanation: The correct response protects the integrity of the process: establish the
facts, apply the appropriate control, and verify the result before closure.
24. A navigation fix does not agree with another available source; the vessel
draft increases after cargo loading. Before proceeding with work involving 33. A vessel must plan a passage through constrained waters. What is required
lifesaving appliances, what should be verified? before accepting the result related to Communications, GMDSS awareness and
A. Silence a machinery alarm and continue at the same load without investigation. distress/urgency procedures?
B. Review machinery pressures, temperatures, alarms and operating limits and compare A. Discharge a small contaminant amount rather than initiating the response procedure.
the findings with the applicable criteria. B. Make an unverified ballast change solely to improve trim.
C. Use a single navigation source after another source shows a material discrepancy. C. Depart with required safety equipment inoperative because the voyage is short.
D. Assume constant bearing is harmless when range is decreasing. D. Review pollution-prevention requirements and the condition of containment systems
Correct Answer: B and compare the findings with the applicable criteria.
Explanation: The correct response protects the integrity of the process: establish the Correct Answer: D
facts, apply the appropriate control, and verify the result before closure. Explanation: This approach preserves control of the situation while producing evidence
that can confirm whether the action actually corrected the issue involving
25. An enclosed-space task is proposed without a completed entry check. Which Communications, GMDSS awareness and distress/urgency procedures.
troubleshooting approach is most appropriate for emergency procedures?
A. Wash a small spill overboard rather than initiating the response process. 34. A pollution-prevention control is compromised during operations. Under these
B. Enter an enclosed space based only on a prior atmosphere test. conditions, when should the issue involving GMDSS awareness be escalated?
C. Correct a required safety-equipment deficiency and verify readiness before A. Use a single navigation source after another source shows a material discrepancy.
proceeding. B. Assume constant bearing is harmless when range is decreasing.
D. Depart with required safety equipment unavailable because conditions are calm. C. Silence a machinery alarm and continue at the same load without investigation.
Correct Answer: C D. Respond to an abnormal machinery indication by protecting the plant, confirming the
Explanation: This approach preserves control of the situation while producing evidence indication and following the operating procedure.
that can confirm whether the action actually corrected the issue involving emergency Correct Answer: D
procedures. Explanation: This answer uses verified evidence before action, which reduces the chance
of masking the real problem and supports a traceable decision about GMDSS awareness.
26. A machinery temperature rises above its normal operating trend. Which action
best supports a defensible decision about Fire prevention, firefighting, damage 35. An alarm occurs during machinery operation. Which comparison is most useful
control and abandonment procedures? for interpreting distress/urgency procedures?
A. Reset a protective trip repeatedly without finding the cause. A. Depart with required safety equipment inoperative because the voyage is short.
B. Protect the plant, verify the indication and diagnose the affected system before B. Discharge a small contaminant amount rather than initiating the response procedure.
resetting or increasing load. C. Review required safety equipment and readiness before departure and compare the
C. Disable an alarm that is interrupting operations. findings with the applicable criteria.
D. Make several plant changes simultaneously before recording the original condition. D. Make an unverified ballast change solely to improve trim.
Correct Answer: B Correct Answer: C
Explanation: This answer uses verified evidence before action, which reduces the chance Explanation: The selected action best supports safe, compliant, and technically sound
of masking the real problem and supports a traceable decision about Fire prevention, performance because it addresses distress/urgency procedures using observable evidence
firefighting, damage control and abandonment procedures. rather than convenience.
27. A pollution-prevention control is compromised during operations. A change 36. A position fix disagrees with the expected track; a target bearing remains
affecting Fire prevention is being considered. How should it be handled? nearly constant as range decreases. Which action best distinguishes the
A. Discharge a small contaminant amount rather than initiating the response procedure. underlying cause from a symptom in Collision avoidance, maneuvering, pilotage and
B. Make an unverified ballast change solely to improve trim. restricted-water operations?
C. Contain and report a pollution risk using the required onboard response and A. Cross-check position, traffic and navigation sources before altering the passage
documentation process. plan, then confirm that the corrective action is effective before closure.
D. Depart with required safety equipment inoperative because the voyage is short. B. Continue on an uncertain position until the next scheduled fix.
Correct Answer: C C. Assume there is no risk because the other vessel is visually small.
Explanation: The selected action best supports safe, compliant, and technically sound D. Make a series of small course changes that are difficult to detect.
performance because it addresses Fire prevention using observable evidence rather than Correct Answer: A
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.
2
, USCG General Subjects Exam Module Designated Duty Engineer Unlimited
37. Visibility falls and several targets appear on radar. Which response is most 46. A position fix disagrees with the expected track. Which action best supports
consistent with the professional or compliance requirements governing Collision a defensible decision about Meteorology, tides, currents and environmental
avoidance? conditions affecting safe navigation?
A. Rely on one electronic source when independent information conflicts. A. Use all available means to determine collision risk and take early, substantial
B. Make a series of small course changes that are difficult to detect. action consistent with the applicable navigation rules.
C. Cross-check position, traffic and navigation sources before altering the passage B. Assume there is no risk because the other vessel is visually small.
plan. C. Continue on an uncertain position until the next scheduled fix.
D. Continue on an uncertain position until the next scheduled fix. D. Rely on one electronic source when independent information conflicts.
Correct Answer: C Correct Answer: A
Explanation: This is the most appropriate option because it connects the observed Explanation: The correct choice follows a verify-act-confirm sequence. That is more
condition to the governing requirement and leaves a record of why the decision was made. reliable than bypassing controls or making multiple uncontrolled changes.
38. A towing or deck operation is affected by changing weather. Which handoff 47. The vessel approaches a traffic or pilotage constraint. A change affecting
practice best reduces error risk for restricted-water operations? environmental conditions affecting safe navigation is being considered. How
A. Assume constant bearing is harmless when range is decreasing. should it be handled?
B. Record the observed condition, supporting evidence, decision and responsible A. Cross-check position, traffic and navigation sources before altering the passage
follow-up; communicate any unresolved risk to the next responsible person. plan.
C. Silence a machinery alarm and continue at the same load without investigation. B. Make a series of small course changes that are difficult to detect.
D. Use a single navigation source after another source shows a material discrepancy. C. Rely on one electronic source when independent information conflicts.
Correct Answer: B D. Assume there is no risk because the other vessel is visually small.
Explanation: The correct choice follows a verify-act-confirm sequence. That is more Correct Answer: A
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
39. The vessel approaches a traffic or pilotage constraint. Which decision about environmental conditions affecting safe navigation.
Navigation rules, watchkeeping responsibilities and bridge resource management is
best supported by the available evidence? 48. A slack tank creates additional free-surface effect; a navigation fix differs
A. Make a series of small course changes that are difficult to detect. by 0.8 nautical mile from another source. The abnormal condition directly affects
B. Rely on one electronic source when independent information conflicts. Ship stability, trim, loading and basic stability calculations. What is the most
C. Assume there is no risk because the other vessel is visually small. appropriate response?
D. Cross-check position, traffic and navigation sources before altering the passage A. Move heavy cargo higher to free lower deck space without recalculation.
plan. B. Correct a list by moving weight without checking stability impact.
Correct Answer: D C. Recalculate the relevant stability condition before accepting the loading or
Explanation: The strongest exam-style response is the one that controls immediate risk, ballast change.
checks the relevant condition, and then acts within the defined requirements for D. Ignore slack-tank effects because total liquid weight is unchanged.
Navigation rules, watchkeeping responsibilities and bridge resource management. Correct Answer: C
Explanation: The correct response protects the integrity of the process: establish the
40. Visibility falls and several targets appear on radar; a navigation fix
facts, apply the appropriate control, and verify the result before closure.
differs by 0.8 nautical mile from another source. Which review step adds the most
value before closing work involving Navigation rules? 49. Cargo loading changes the vessel's vertical center of gravity. Which
A. Continue on an uncertain position until the next scheduled fix. documentation approach best supports traceability for Ship stability?
B. Assume there is no risk because the other vessel is visually small. A. Accept a loading condition based only on even draft readings.
C. Make a series of small course changes that are difficult to detect. B. Ignore slack-tank effects because total liquid weight is unchanged.
D. Cross-check position, traffic and navigation sources before altering the passage C. Record the observed condition, supporting evidence, decision and responsible
plan, then confirm that the corrective action is effective before closure. follow-up; communicate any unresolved risk to the next responsible person.
Correct Answer: D D. Move heavy cargo higher to free lower deck space without recalculation.
Explanation: The correct response protects the integrity of the process: establish the Correct Answer: C
facts, apply the appropriate control, and verify the result before closure. Explanation: This approach preserves control of the situation while producing evidence
that can confirm whether the action actually corrected the issue involving Ship
41. Visibility falls and several targets appear on radar. With respect to stability.
watchkeeping responsibilities, what is the best FIRST action?
A. Rely on one electronic source when independent information conflicts. 50. A slack tank creates additional free-surface effect. Which action is most
B. Make a series of small course changes that are difficult to detect. likely to prevent recurrence of a problem involving basic stability calculations?
C. Cross-check position, traffic and navigation sources before altering the passage A. 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. B. Correct a list by moving weight without checking stability impact.
Correct Answer: C C. Move heavy cargo higher to free lower deck space without recalculation.
Explanation: This approach preserves control of the situation while producing evidence D. Accept a loading condition based only on even draft readings.
that can confirm whether the action actually corrected the issue involving watchkeeping Correct Answer: A
responsibilities. Explanation: This answer uses verified evidence before action, which reduces the chance
of masking the real problem and supports a traceable decision about basic stability
42. A pre-departure check identifies a safety-equipment deficiency. Which calculations.
evidence is most important when evaluating bridge resource management?
A. Silence a machinery alarm and continue at the same load without investigation. 51. A deck load is shifted to a higher position. Which sequence is most
B. Use a single navigation source after another source shows a material discrepancy. appropriate when carrying out Cargo operations, stowage, securing and hazards
C. Assume constant bearing is harmless when range is decreasing. relevant to vessel type?
D. Review machinery pressures, temperatures, alarms and operating limits and compare A. Account for free-surface and weight-shift effects when evaluating stability and
the findings with the applicable criteria. trim, then verify the resulting state before moving to the next step.
Correct Answer: D B. Ignore slack-tank effects because total liquid weight is unchanged.
Explanation: This answer uses verified evidence before action, which reduces the chance C. Accept a loading condition based only on even draft readings.
of masking the real problem and supports a traceable decision about bridge resource D. Correct a list by moving weight without checking stability impact.
management. Correct Answer: A
Explanation: The selected action best supports safe, compliant, and technically sound
43. A vessel approaches restricted visibility with traffic nearby. Which response
performance because it addresses Cargo operations, stowage, securing and hazards
best controls the primary risk associated with Chartwork, publications, voyage relevant to vessel type using observable evidence rather than convenience.
planning and position fixing?
A. Contain and report a pollution risk using the required onboard response and 52. Ballast is proposed to correct a list; visibility falls below one nautical
documentation process. mile. Which choice demonstrates the strongest control of Cargo operations?
B. Make an unverified ballast change solely to improve trim. A. Move heavy cargo higher to free lower deck space without recalculation.
C. Depart with required safety equipment inoperative because the voyage is short. B. Correct a list by moving weight without checking stability impact.
D. Discharge a small contaminant amount rather than initiating the response procedure. C. Ignore slack-tank effects because total liquid weight is unchanged.
Correct Answer: A D. Recalculate the relevant stability condition before accepting the loading or
Explanation: The selected action best supports safe, compliant, and technically sound ballast change.
performance because it addresses Chartwork, publications, voyage planning and position Correct Answer: D
fixing using observable evidence 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
44. A pre-departure check identifies a safety-equipment deficiency; a navigation conditions before the cause is understood.
fix differs by 0.8 nautical mile from another source. Before proceeding with work
involving voyage planning, what should be verified? 53. A stability calculation is required after cargo or ballast changes. What is
A. Review position, course, speed, traffic and applicable navigation rules and compare required before accepting the result related to hazards relevant to vessel type?
the findings with the applicable criteria. A. Depart with required safety equipment inoperative because the voyage is short.
B. Assume constant bearing is harmless when range is decreasing. B. Discharge a small contaminant amount rather than initiating the response procedure.
C. Silence a machinery alarm and continue at the same load without investigation. C. Review required safety equipment and readiness before departure and compare the
D. Use a single navigation source after another source shows a material discrepancy. findings with the applicable criteria.
Correct Answer: A D. Make an unverified ballast change solely to improve trim.
Explanation: A defensible professional decision should be based on current evidence and Correct Answer: C
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.
45. A pollution-prevention control is compromised during operations. Which 54. An enclosed-space task is proposed without a completed entry check. Under
troubleshooting approach is most appropriate for position fixing? these conditions, when should the issue involving Marine safety systems,
A. Discharge a small contaminant amount rather than initiating the response procedure. lifesaving appliances and emergency procedures be escalated?
B. Contain and report a pollution risk using the required onboard response and A. Continue the transfer until the planned quantity is complete.
documentation process. B. Depart with required safety equipment unavailable because conditions are calm.
C. Make an unverified ballast change solely to improve trim. C. Wash a small spill overboard rather than initiating the response process.
D. Depart with required safety equipment inoperative because the voyage is short. D. Stop or control the operation, protect personnel and follow the required emergency
Correct Answer: B or pollution-response procedure.
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.
3
Duty Engineer Unlimited
ID14102
,USCG General Subjects Exam Module Designated Duty Engineer Unlimited
1. An engineering watch observes an abnormal temperature or pressure. With 10. A stability calculation is required after cargo or ballast changes. Which
respect to Communications, GMDSS awareness and distress/urgency procedures, what action is most likely to prevent recurrence of a problem involving bridge
is the best FIRST action? resource management?
A. Contain and report a pollution risk using the required onboard response and A. Verify the loading and stability data before accepting a cargo or ballast change,
documentation process. then confirm that the corrective action is effective before closure.
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. Discharge a small contaminant amount rather than initiating the response procedure. D. Silence a machinery alarm and continue at the same load without investigation.
Correct Answer: A Correct Answer: A
Explanation: This approach preserves control of the situation while producing evidence Explanation: This answer uses verified evidence before action, which reduces the chance
that can confirm whether the action actually corrected the issue involving of masking the real problem and supports a traceable decision about bridge resource
Communications, GMDSS awareness and distress/urgency procedures. management.
2. A towing or deck operation is affected by changing weather. Which evidence is 11. A navigation fix does not agree with another available source. Which sequence
most important when evaluating GMDSS awareness? is most appropriate when carrying out Chartwork, publications, voyage planning
A. Assume constant bearing is harmless when range is decreasing. and position fixing?
B. Silence a machinery alarm and continue at the same load without investigation. A. Verify the loading and stability data before accepting a cargo or ballast change,
C. Review position, course, speed, traffic and applicable navigation rules and compare then verify the resulting state before moving to the next step.
the findings with the applicable criteria. B. Depart with required safety equipment inoperative because the voyage is short.
D. Use a single navigation source after another source shows a material discrepancy. C. Discharge a small contaminant amount rather than initiating the response procedure.
Correct Answer: C D. Make an unverified ballast change solely to improve trim.
Explanation: This answer uses verified evidence before action, which reduces the chance Correct Answer: A
of masking the real problem and supports a traceable decision about GMDSS awareness. Explanation: The selected action best supports safe, compliant, and technically sound
performance because it addresses Chartwork, publications, voyage planning and position
3. A pre-departure check identifies a safety-equipment deficiency. Which response fixing using observable evidence rather than convenience.
best controls the primary risk associated with distress/urgency procedures?
A. Discharge a small contaminant amount rather than initiating the response procedure. 12. A stability calculation is required after cargo or ballast changes; a
B. Make an unverified ballast change solely to improve trim. machinery temperature rises 20 C above its normal trend. Which choice
C. Depart with required safety equipment inoperative because the voyage is short. demonstrates the strongest control of voyage planning?
D. Contain and report a pollution risk using the required onboard response and A. Silence a machinery alarm and continue at the same load without investigation.
documentation process. B. Use a single navigation source after another source shows a material discrepancy.
Correct Answer: D C. Assume constant bearing is harmless when range is decreasing.
Explanation: The selected action best supports safe, compliant, and technically sound D. Respond to an abnormal machinery indication by protecting the plant, confirming the
performance because it addresses distress/urgency procedures using observable evidence indication and following the operating procedure.
rather than convenience. Correct Answer: D
Explanation: A defensible professional decision should be based on current evidence and
4. A position fix disagrees with the expected track; a navigation fix differs by
applicable criteria. The other choices rely on assumption, remove safeguards, or change
0.8 nautical mile from another source. Before proceeding with work involving conditions before the cause is understood.
Collision avoidance, maneuvering, pilotage and restricted-water operations, what
should be verified? 13. A towing or deck operation is affected by changing weather. What is required
A. Continue on an uncertain position until the next scheduled fix. before accepting the result related to position fixing?
B. Review bearing/range trend, own-ship course/speed, target aspect and applicable A. Review stability data, loading condition and free-surface effects and compare the
rule and compare the findings with the applicable criteria. findings with the applicable criteria.
C. Assume there is no risk because the other vessel is visually small. B. Make an unverified ballast change solely to improve trim.
D. Make a series of small course changes that are difficult to detect. C. Depart with required safety equipment inoperative because the voyage is short.
Correct Answer: B 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.
5. Visibility falls and several targets appear on radar. Which troubleshooting 14. A position fix disagrees with the expected track. Under these conditions,
approach is most appropriate for Collision avoidance? when should the issue involving Meteorology, tides, currents and environmental
A. Rely on one electronic source when independent information conflicts. conditions affecting safe navigation be escalated?
B. Cross-check position, traffic and navigation sources before altering the passage A. Use all available means to determine collision risk and take early, substantial
plan. action consistent with the applicable navigation rules.
C. Make a series of small course changes that are difficult to detect. B. Assume there is no risk because the other vessel is visually small.
D. Continue on an uncertain position until the next scheduled fix. C. Continue on an uncertain position until the next scheduled fix.
Correct Answer: B D. Rely on one electronic source when independent information conflicts.
Explanation: This is the most appropriate option because it connects the observed Correct Answer: A
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.
6. A vessel must plan a passage through constrained waters. Which action best
supports a defensible decision about restricted-water operations? 15. The vessel approaches a traffic or pilotage constraint. Which comparison is
A. Silence a machinery alarm and continue at the same load without investigation. most useful for interpreting environmental conditions affecting safe navigation?
B. Use a single navigation source after another source shows a material discrepancy. A. Review position sources, charted hazards, depth/under-keel clearance and traffic
C. Respond to an abnormal machinery indication by protecting the plant, confirming the and compare the findings with the applicable criteria.
indication and following the operating procedure. B. Make a series of small course changes that are difficult to detect.
D. Assume constant bearing is harmless when range is decreasing. C. Rely on one electronic source when independent information conflicts.
Correct Answer: C D. Assume there is no risk because the other vessel is visually small.
Explanation: The correct choice follows a verify-act-confirm sequence. That is more Correct Answer: A
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
7. The vessel approaches a traffic or pilotage constraint. A change affecting environmental conditions affecting safe navigation.
Navigation rules, watchkeeping responsibilities and bridge resource management is
being considered. How should it be handled? 16. A slack tank creates additional free-surface effect; a machinery temperature
A. Make a series of small course changes that are difficult to detect. rises 20 C above its normal trend. Which action best distinguishes the underlying
B. Rely on one electronic source when independent information conflicts. cause from a symptom in Ship stability, trim, loading and basic stability
C. Assume there is no risk because the other vessel is visually small. calculations?
D. Cross-check position, traffic and navigation sources before altering the passage A. Move heavy cargo higher to free lower deck space without recalculation.
plan. B. Correct a list by moving weight without checking stability impact.
Correct Answer: D C. Account for free-surface and weight-shift effects when evaluating stability and
Explanation: The strongest exam-style response is the one that controls immediate risk, trim, then confirm that the corrective action is effective before closure.
checks the relevant condition, and then acts within the defined requirements for D. Ignore slack-tank effects because total liquid weight is unchanged.
Navigation rules, watchkeeping responsibilities and bridge resource management. Correct Answer: C
Explanation: The correct response protects the integrity of the process: establish the
8. Visibility falls and several targets appear on radar; a machinery temperature
facts, apply the appropriate control, and verify the result before closure.
rises 20 C above its normal trend. The abnormal condition directly affects
Navigation rules. What is the most appropriate response? 17. Cargo loading changes the vessel's vertical center of gravity. Which response
A. Continue on an uncertain position until the next scheduled fix. is most consistent with the professional or compliance requirements governing
B. Assume there is no risk because the other vessel is visually small. Ship stability?
C. Use all available means to determine collision risk and take early, substantial A. Accept a loading condition based only on even draft readings.
action consistent with the applicable navigation rules. B. Ignore slack-tank effects because total liquid weight is unchanged.
D. Make a series of small course changes that are difficult to detect. C. Account for free-surface and weight-shift effects when evaluating stability and
Correct Answer: C trim.
Explanation: The correct response protects the integrity of the process: establish the D. Move heavy cargo higher to free lower deck space without recalculation.
facts, apply the appropriate control, and verify the result before closure. Correct Answer: C
Explanation: This approach preserves control of the situation while producing evidence
9. Visibility falls and several targets appear on radar. Which documentation
that can confirm whether the action actually corrected the issue involving Ship
approach best supports traceability for watchkeeping responsibilities? stability.
A. Rely on one electronic source when independent information conflicts.
B. Make a series of small course changes that are difficult to detect. 18. A slack tank creates additional free-surface effect. Which handoff practice
C. Continue on an uncertain position until the next scheduled fix. best reduces error risk for basic stability calculations?
D. Record the observed condition, supporting evidence, decision and responsible A. Correct a list by moving weight without checking stability impact.
follow-up; communicate any unresolved risk to the next responsible person. B. Move heavy cargo higher to free lower deck space without recalculation.
Correct Answer: D C. Record the observed condition, supporting evidence, decision and responsible
Explanation: This approach preserves control of the situation while producing evidence follow-up; communicate any unresolved risk to the next responsible person.
that can confirm whether the action actually corrected the issue involving watchkeeping D. Accept a loading condition based only on even draft readings.
responsibilities. Correct Answer: C
Explanation: This answer uses verified evidence before action, which reduces the chance
of masking the real problem and supports a traceable decision about basic stability
calculations.
1
,USCG General Subjects Exam Module Designated Duty Engineer Unlimited
19. A deck load is shifted to a higher position. Which decision about Cargo 28. An electrical protective device trips repeatedly; the vessel draft increases
operations, stowage, securing and hazards relevant to vessel type is best after cargo loading. The abnormal condition directly affects damage control. What
supported by the available evidence? is the most appropriate response?
A. Ignore slack-tank effects because total liquid weight is unchanged. A. Disable an alarm that is interrupting operations.
B. Accept a loading condition based only on even draft readings. B. Protect the plant, verify the indication and diagnose the affected system before
C. Account for free-surface and weight-shift effects when evaluating stability and resetting or increasing load.
trim. C. Reset a protective trip repeatedly without finding the cause.
D. Correct a list by moving weight without checking stability impact. D. Increase machinery load to see whether the abnormal indication clears.
Correct Answer: C Correct Answer: B
Explanation: The selected action best supports safe, compliant, and technically sound Explanation: A defensible professional decision should be based on current evidence and
performance because it addresses Cargo operations, stowage, securing and hazards applicable criteria. The other choices rely on assumption, remove safeguards, or change
relevant to vessel type using observable evidence rather than convenience. conditions before the cause is understood.
20. Ballast is proposed to correct a list; the vessel draft increases after cargo 29. An alarm occurs during machinery operation. Which documentation approach best
loading. Which review step adds the most value before closing work involving supports traceability for abandonment procedures?
Cargo operations? 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. Account for free-surface and weight-shift effects when evaluating stability and C. Record the observed condition, supporting evidence, decision and responsible
trim, then confirm that the corrective action is effective before closure. follow-up; communicate any unresolved risk to the next responsible person.
C. Correct a list by moving weight without checking stability impact. D. Make an unverified ballast change solely to improve trim.
D. Ignore slack-tank effects because total liquid weight is unchanged. Correct Answer: C
Correct Answer: B Explanation: This is the most appropriate option because it connects the observed
Explanation: A defensible professional decision should be based on current evidence and condition to the governing requirement and leaves a record of why the decision was made.
applicable criteria. The other choices rely on assumption, remove safeguards, or change
conditions before the cause is understood.
30. A pump loses discharge pressure while demand remains constant. Which action
is most likely to prevent recurrence of a problem involving Marine engineering or
21. A vessel approaches restricted visibility with traffic nearby. With respect electrical systems applicable to the named officer/module?
to hazards relevant to vessel type, what is the best FIRST action? A. Compare operating pressures/temperatures, equipment status and recent changes to
A. Discharge a small contaminant amount rather than initiating the response procedure. isolate the fault safely, then confirm that the corrective action is effective before
B. Make an unverified ballast change solely to improve trim. closure.
C. Contain and report a pollution risk using the required onboard response and B. Reset a protective trip repeatedly without finding the cause.
documentation process. C. Disable an alarm that is interrupting operations.
D. Depart with required safety equipment inoperative because the voyage is short. D. Make several plant changes simultaneously before recording the original condition.
Correct Answer: C Correct Answer: A
Explanation: This is the most appropriate option because it connects the observed Explanation: The correct choice follows a verify-act-confirm sequence. That is more
condition to the governing requirement and leaves a record of why the decision was made. reliable than bypassing controls or making multiple uncontrolled changes.
22. An enclosed-space task is proposed without a completed entry check. Which 31. A machinery temperature rises above its normal operating trend. Which
evidence is most important when evaluating Marine safety systems, lifesaving sequence is most appropriate when carrying out Marine engineering?
appliances and emergency procedures? A. Compare operating pressures/temperatures, equipment status and recent changes to
A. Continue the transfer until the planned quantity is complete. isolate the fault safely, then verify the resulting state before moving to the next
B. Depart with required safety equipment unavailable because conditions are calm. step.
C. Wash a small spill overboard rather than initiating the response process. B. Increase machinery load to see whether the abnormal indication clears.
D. Review source/quantity of release, containment condition, notifications and C. Make several plant changes simultaneously before recording the original condition.
response equipment and compare the findings with the applicable criteria. D. Reset a protective trip repeatedly without finding the cause.
Correct Answer: D Correct Answer: A
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 Marine
engineering.
23. Required lifesaving equipment is not ready before departure. Which response
best controls the primary risk associated with Marine safety systems? 32. A vessel must plan a passage through constrained waters; visibility falls
A. Enter an enclosed space based only on a prior atmosphere test. below one nautical mile. Which choice demonstrates the strongest control of
B. Wash a small spill overboard rather than initiating the response process. electrical systems applicable to the named officer/module?
C. Continue the transfer until the planned quantity is complete. A. Assume constant bearing is harmless when range is decreasing.
D. Correct a required safety-equipment deficiency and verify readiness before B. Respond to an abnormal machinery indication by protecting the plant, confirming the
proceeding. indication and following the operating procedure.
Correct Answer: D C. Silence a machinery alarm and continue at the same load without investigation.
Explanation: The strongest exam-style response is the one that controls immediate risk, D. Use a single navigation source after another source shows a material discrepancy.
checks the relevant condition, and then acts within the defined requirements for Marine Correct Answer: B
safety systems. Explanation: The correct response protects the integrity of the process: establish the
facts, apply the appropriate control, and verify the result before closure.
24. A navigation fix does not agree with another available source; the vessel
draft increases after cargo loading. Before proceeding with work involving 33. A vessel must plan a passage through constrained waters. What is required
lifesaving appliances, what should be verified? before accepting the result related to Communications, GMDSS awareness and
A. Silence a machinery alarm and continue at the same load without investigation. distress/urgency procedures?
B. Review machinery pressures, temperatures, alarms and operating limits and compare A. Discharge a small contaminant amount rather than initiating the response procedure.
the findings with the applicable criteria. B. Make an unverified ballast change solely to improve trim.
C. Use a single navigation source after another source shows a material discrepancy. C. Depart with required safety equipment inoperative because the voyage is short.
D. Assume constant bearing is harmless when range is decreasing. D. Review pollution-prevention requirements and the condition of containment systems
Correct Answer: B and compare the findings with the applicable criteria.
Explanation: The correct response protects the integrity of the process: establish the Correct Answer: D
facts, apply the appropriate control, and verify the result before closure. Explanation: This approach preserves control of the situation while producing evidence
that can confirm whether the action actually corrected the issue involving
25. An enclosed-space task is proposed without a completed entry check. Which Communications, GMDSS awareness and distress/urgency procedures.
troubleshooting approach is most appropriate for emergency procedures?
A. Wash a small spill overboard rather than initiating the response process. 34. A pollution-prevention control is compromised during operations. Under these
B. Enter an enclosed space based only on a prior atmosphere test. conditions, when should the issue involving GMDSS awareness be escalated?
C. Correct a required safety-equipment deficiency and verify readiness before A. Use a single navigation source after another source shows a material discrepancy.
proceeding. B. Assume constant bearing is harmless when range is decreasing.
D. Depart with required safety equipment unavailable because conditions are calm. C. Silence a machinery alarm and continue at the same load without investigation.
Correct Answer: C D. Respond to an abnormal machinery indication by protecting the plant, confirming the
Explanation: This approach preserves control of the situation while producing evidence indication and following the operating procedure.
that can confirm whether the action actually corrected the issue involving emergency Correct Answer: D
procedures. Explanation: This answer uses verified evidence before action, which reduces the chance
of masking the real problem and supports a traceable decision about GMDSS awareness.
26. A machinery temperature rises above its normal operating trend. Which action
best supports a defensible decision about Fire prevention, firefighting, damage 35. An alarm occurs during machinery operation. Which comparison is most useful
control and abandonment procedures? for interpreting distress/urgency procedures?
A. Reset a protective trip repeatedly without finding the cause. A. Depart with required safety equipment inoperative because the voyage is short.
B. Protect the plant, verify the indication and diagnose the affected system before B. Discharge a small contaminant amount rather than initiating the response procedure.
resetting or increasing load. C. Review required safety equipment and readiness before departure and compare the
C. Disable an alarm that is interrupting operations. findings with the applicable criteria.
D. Make several plant changes simultaneously before recording the original condition. D. Make an unverified ballast change solely to improve trim.
Correct Answer: B Correct Answer: C
Explanation: This answer uses verified evidence before action, which reduces the chance Explanation: The selected action best supports safe, compliant, and technically sound
of masking the real problem and supports a traceable decision about Fire prevention, performance because it addresses distress/urgency procedures using observable evidence
firefighting, damage control and abandonment procedures. rather than convenience.
27. A pollution-prevention control is compromised during operations. A change 36. A position fix disagrees with the expected track; a target bearing remains
affecting Fire prevention is being considered. How should it be handled? nearly constant as range decreases. Which action best distinguishes the
A. Discharge a small contaminant amount rather than initiating the response procedure. underlying cause from a symptom in Collision avoidance, maneuvering, pilotage and
B. Make an unverified ballast change solely to improve trim. restricted-water operations?
C. Contain and report a pollution risk using the required onboard response and A. Cross-check position, traffic and navigation sources before altering the passage
documentation process. plan, then confirm that the corrective action is effective before closure.
D. Depart with required safety equipment inoperative because the voyage is short. B. Continue on an uncertain position until the next scheduled fix.
Correct Answer: C C. Assume there is no risk because the other vessel is visually small.
Explanation: The selected action best supports safe, compliant, and technically sound D. Make a series of small course changes that are difficult to detect.
performance because it addresses Fire prevention using observable evidence rather than Correct Answer: A
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.
2
, USCG General Subjects Exam Module Designated Duty Engineer Unlimited
37. Visibility falls and several targets appear on radar. Which response is most 46. A position fix disagrees with the expected track. Which action best supports
consistent with the professional or compliance requirements governing Collision a defensible decision about Meteorology, tides, currents and environmental
avoidance? conditions affecting safe navigation?
A. Rely on one electronic source when independent information conflicts. A. Use all available means to determine collision risk and take early, substantial
B. Make a series of small course changes that are difficult to detect. action consistent with the applicable navigation rules.
C. Cross-check position, traffic and navigation sources before altering the passage B. Assume there is no risk because the other vessel is visually small.
plan. C. Continue on an uncertain position until the next scheduled fix.
D. Continue on an uncertain position until the next scheduled fix. D. Rely on one electronic source when independent information conflicts.
Correct Answer: C Correct Answer: A
Explanation: This is the most appropriate option because it connects the observed Explanation: The correct choice follows a verify-act-confirm sequence. That is more
condition to the governing requirement and leaves a record of why the decision was made. reliable than bypassing controls or making multiple uncontrolled changes.
38. A towing or deck operation is affected by changing weather. Which handoff 47. The vessel approaches a traffic or pilotage constraint. A change affecting
practice best reduces error risk for restricted-water operations? environmental conditions affecting safe navigation is being considered. How
A. Assume constant bearing is harmless when range is decreasing. should it be handled?
B. Record the observed condition, supporting evidence, decision and responsible A. Cross-check position, traffic and navigation sources before altering the passage
follow-up; communicate any unresolved risk to the next responsible person. plan.
C. Silence a machinery alarm and continue at the same load without investigation. B. Make a series of small course changes that are difficult to detect.
D. Use a single navigation source after another source shows a material discrepancy. C. Rely on one electronic source when independent information conflicts.
Correct Answer: B D. Assume there is no risk because the other vessel is visually small.
Explanation: The correct choice follows a verify-act-confirm sequence. That is more Correct Answer: A
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
39. The vessel approaches a traffic or pilotage constraint. Which decision about environmental conditions affecting safe navigation.
Navigation rules, watchkeeping responsibilities and bridge resource management is
best supported by the available evidence? 48. A slack tank creates additional free-surface effect; a navigation fix differs
A. Make a series of small course changes that are difficult to detect. by 0.8 nautical mile from another source. The abnormal condition directly affects
B. Rely on one electronic source when independent information conflicts. Ship stability, trim, loading and basic stability calculations. What is the most
C. Assume there is no risk because the other vessel is visually small. appropriate response?
D. Cross-check position, traffic and navigation sources before altering the passage A. Move heavy cargo higher to free lower deck space without recalculation.
plan. B. Correct a list by moving weight without checking stability impact.
Correct Answer: D C. Recalculate the relevant stability condition before accepting the loading or
Explanation: The strongest exam-style response is the one that controls immediate risk, ballast change.
checks the relevant condition, and then acts within the defined requirements for D. Ignore slack-tank effects because total liquid weight is unchanged.
Navigation rules, watchkeeping responsibilities and bridge resource management. Correct Answer: C
Explanation: The correct response protects the integrity of the process: establish the
40. Visibility falls and several targets appear on radar; a navigation fix
facts, apply the appropriate control, and verify the result before closure.
differs by 0.8 nautical mile from another source. Which review step adds the most
value before closing work involving Navigation rules? 49. Cargo loading changes the vessel's vertical center of gravity. Which
A. Continue on an uncertain position until the next scheduled fix. documentation approach best supports traceability for Ship stability?
B. Assume there is no risk because the other vessel is visually small. A. Accept a loading condition based only on even draft readings.
C. Make a series of small course changes that are difficult to detect. B. Ignore slack-tank effects because total liquid weight is unchanged.
D. Cross-check position, traffic and navigation sources before altering the passage C. Record the observed condition, supporting evidence, decision and responsible
plan, then confirm that the corrective action is effective before closure. follow-up; communicate any unresolved risk to the next responsible person.
Correct Answer: D D. Move heavy cargo higher to free lower deck space without recalculation.
Explanation: The correct response protects the integrity of the process: establish the Correct Answer: C
facts, apply the appropriate control, and verify the result before closure. Explanation: This approach preserves control of the situation while producing evidence
that can confirm whether the action actually corrected the issue involving Ship
41. Visibility falls and several targets appear on radar. With respect to stability.
watchkeeping responsibilities, what is the best FIRST action?
A. Rely on one electronic source when independent information conflicts. 50. A slack tank creates additional free-surface effect. Which action is most
B. Make a series of small course changes that are difficult to detect. likely to prevent recurrence of a problem involving basic stability calculations?
C. Cross-check position, traffic and navigation sources before altering the passage A. 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. B. Correct a list by moving weight without checking stability impact.
Correct Answer: C C. Move heavy cargo higher to free lower deck space without recalculation.
Explanation: This approach preserves control of the situation while producing evidence D. Accept a loading condition based only on even draft readings.
that can confirm whether the action actually corrected the issue involving watchkeeping Correct Answer: A
responsibilities. Explanation: This answer uses verified evidence before action, which reduces the chance
of masking the real problem and supports a traceable decision about basic stability
42. A pre-departure check identifies a safety-equipment deficiency. Which calculations.
evidence is most important when evaluating bridge resource management?
A. Silence a machinery alarm and continue at the same load without investigation. 51. A deck load is shifted to a higher position. Which sequence is most
B. Use a single navigation source after another source shows a material discrepancy. appropriate when carrying out Cargo operations, stowage, securing and hazards
C. Assume constant bearing is harmless when range is decreasing. relevant to vessel type?
D. Review machinery pressures, temperatures, alarms and operating limits and compare A. Account for free-surface and weight-shift effects when evaluating stability and
the findings with the applicable criteria. trim, then verify the resulting state before moving to the next step.
Correct Answer: D B. Ignore slack-tank effects because total liquid weight is unchanged.
Explanation: This answer uses verified evidence before action, which reduces the chance C. Accept a loading condition based only on even draft readings.
of masking the real problem and supports a traceable decision about bridge resource D. Correct a list by moving weight without checking stability impact.
management. Correct Answer: A
Explanation: The selected action best supports safe, compliant, and technically sound
43. A vessel approaches restricted visibility with traffic nearby. Which response
performance because it addresses Cargo operations, stowage, securing and hazards
best controls the primary risk associated with Chartwork, publications, voyage relevant to vessel type using observable evidence rather than convenience.
planning and position fixing?
A. Contain and report a pollution risk using the required onboard response and 52. Ballast is proposed to correct a list; visibility falls below one nautical
documentation process. mile. Which choice demonstrates the strongest control of Cargo operations?
B. Make an unverified ballast change solely to improve trim. A. Move heavy cargo higher to free lower deck space without recalculation.
C. Depart with required safety equipment inoperative because the voyage is short. B. Correct a list by moving weight without checking stability impact.
D. Discharge a small contaminant amount rather than initiating the response procedure. C. Ignore slack-tank effects because total liquid weight is unchanged.
Correct Answer: A D. Recalculate the relevant stability condition before accepting the loading or
Explanation: The selected action best supports safe, compliant, and technically sound ballast change.
performance because it addresses Chartwork, publications, voyage planning and position Correct Answer: D
fixing using observable evidence 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
44. A pre-departure check identifies a safety-equipment deficiency; a navigation conditions before the cause is understood.
fix differs by 0.8 nautical mile from another source. Before proceeding with work
involving voyage planning, what should be verified? 53. A stability calculation is required after cargo or ballast changes. What is
A. Review position, course, speed, traffic and applicable navigation rules and compare required before accepting the result related to hazards relevant to vessel type?
the findings with the applicable criteria. A. Depart with required safety equipment inoperative because the voyage is short.
B. Assume constant bearing is harmless when range is decreasing. B. Discharge a small contaminant amount rather than initiating the response procedure.
C. Silence a machinery alarm and continue at the same load without investigation. C. Review required safety equipment and readiness before departure and compare the
D. Use a single navigation source after another source shows a material discrepancy. findings with the applicable criteria.
Correct Answer: A D. Make an unverified ballast change solely to improve trim.
Explanation: A defensible professional decision should be based on current evidence and Correct Answer: C
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.
45. A pollution-prevention control is compromised during operations. Which 54. An enclosed-space task is proposed without a completed entry check. Under
troubleshooting approach is most appropriate for position fixing? these conditions, when should the issue involving Marine safety systems,
A. Discharge a small contaminant amount rather than initiating the response procedure. lifesaving appliances and emergency procedures be escalated?
B. Contain and report a pollution risk using the required onboard response and A. Continue the transfer until the planned quantity is complete.
documentation process. B. Depart with required safety equipment unavailable because conditions are calm.
C. Make an unverified ballast change solely to improve trim. C. Wash a small spill overboard rather than initiating the response process.
D. Depart with required safety equipment inoperative because the voyage is short. D. Stop or control the operation, protect personnel and follow the required emergency
Correct Answer: B or pollution-response procedure.
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.
3
