USCG General Subjects Exam Module Assistant
Engineer Uninspected Fishing Vessel
ID14097
,USCG General Subjects Exam Module Assistant Engineer Uninspected Fishing Vessel
1. A slack tank creates additional free-surface effect. With respect to Ship 10. An enclosed-space task is proposed without a completed entry check. Which
stability, trim, loading and basic stability calculations, what is the best FIRST action is most likely to prevent recurrence of a problem involving emergency
action? procedures?
A. Move heavy cargo higher to free lower deck space without recalculation. A. Wash a small spill overboard rather than initiating the response process.
B. Recalculate the relevant stability condition before accepting the loading or B. Enter an enclosed space based only on a prior atmosphere test.
ballast change. C. Correct a required safety-equipment deficiency and verify readiness before
C. Correct a list by moving weight without checking stability impact. proceeding, then confirm that the corrective action is effective before closure.
D. Ignore slack-tank effects because total liquid weight is unchanged. D. Depart with required safety equipment unavailable because conditions are calm.
Correct Answer: B 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 emergency
procedures.
2. Cargo loading changes the vessel's vertical center of gravity. Which evidence
is most important when evaluating Ship stability? 11. A machinery temperature rises above its normal operating trend. Which
A. Accept a loading condition based only on even draft readings. sequence is most appropriate when carrying out Fire prevention, firefighting,
B. Review loading manual limits, free-surface moment and resulting draft/trim and damage control and abandonment procedures?
compare the findings with the applicable criteria. A. Reset a protective trip repeatedly without finding the cause.
C. Ignore slack-tank effects because total liquid weight is unchanged. B. Disable an alarm that is interrupting operations.
D. Move heavy cargo higher to free lower deck space without recalculation. C. Protect the plant, verify the indication and diagnose the affected system before
Correct Answer: B resetting or increasing load, then verify the resulting state before moving to the
Explanation: This approach preserves control of the situation while producing evidence next step.
that can confirm whether the action actually corrected the issue involving Ship D. Make several plant changes simultaneously before recording the original condition.
stability. Correct Answer: C
Explanation: This answer uses verified evidence before action, which reduces the chance
3. A slack tank creates additional free-surface effect. Which response best
of masking the real problem and supports a traceable decision about Fire prevention,
controls the primary risk associated with basic stability calculations? firefighting, damage control and abandonment procedures.
A. Correct a list by moving weight without checking stability impact.
B. Move heavy cargo higher to free lower deck space without recalculation. 12. A pollution-prevention control is compromised during operations; a navigation
C. Recalculate the relevant stability condition before accepting the loading or fix differs by 0.8 nautical mile from another source. Which choice demonstrates
ballast change. the strongest control of Fire prevention?
D. Accept a loading condition based only on even draft readings. A. Depart with required safety equipment inoperative because the voyage is short.
Correct Answer: C B. Correct a required safety-equipment deficiency before sailing when the vessel
Explanation: This answer uses verified evidence before action, which reduces the chance cannot legally or safely depart.
of masking the real problem and supports a traceable decision about basic stability C. Discharge a small contaminant amount rather than initiating the response procedure.
calculations. D. Make an unverified ballast change solely to improve trim.
Correct Answer: B
4. A deck load is shifted to a higher position; the vessel draft increases after
Explanation: The selected action best supports safe, compliant, and technically sound
cargo loading. Before proceeding with work involving Cargo operations, stowage,
performance because it addresses Fire prevention using observable evidence rather than
securing and hazards relevant to vessel type, what should be verified? convenience.
A. Ignore slack-tank effects because total liquid weight is unchanged.
B. Accept a loading condition based only on even draft readings. 13. An electrical protective device trips repeatedly. What is required before
C. Correct a list by moving weight without checking stability impact. accepting the result related to damage control?
D. Review loading manual limits, free-surface moment and resulting draft/trim and A. Disable an alarm that is interrupting operations.
compare the findings with the applicable criteria. B. Reset a protective trip repeatedly without finding the cause.
Correct Answer: D C. Review pressure, temperature, lubrication, electrical load, alarm history and
Explanation: The selected action best supports safe, compliant, and technically sound equipment status and compare the findings with the applicable criteria.
performance because it addresses Cargo operations, stowage, securing and hazards D. Increase machinery load to see whether the abnormal indication clears.
relevant to vessel type using observable evidence rather than convenience. Correct Answer: C
Explanation: A defensible professional decision should be based on current evidence and
5. Ballast is proposed to correct a list. Which troubleshooting approach is most applicable criteria. The other choices rely on assumption, remove safeguards, or change
appropriate for Cargo operations? conditions before the cause is understood.
A. Move heavy cargo higher to free lower deck space without recalculation.
B. Correct a list by moving weight without checking stability impact. 14. An alarm occurs during machinery operation. Under these conditions, when
C. Recalculate the relevant stability condition before accepting the loading or should the issue involving abandonment procedures be escalated?
ballast change. A. Make an unverified ballast change solely to improve trim.
D. Ignore slack-tank effects because total liquid weight is unchanged. B. Depart with required safety equipment inoperative because the voyage is short.
Correct Answer: C C. Discharge a small contaminant amount rather than initiating the response procedure.
Explanation: A defensible professional decision should be based on current evidence and D. Correct a required safety-equipment deficiency before sailing when the vessel
applicable criteria. The other choices rely on assumption, remove safeguards, or change cannot legally or safely depart.
conditions before the cause is understood. Correct Answer: D
Explanation: This is the most appropriate option because it connects the observed
6. A vessel approaches restricted visibility with traffic nearby. Which action
condition to the governing requirement and leaves a record of why the decision was made.
best supports a defensible decision about hazards relevant to vessel type?
A. Depart with required safety equipment inoperative because the voyage is short. 15. A pump loses discharge pressure while demand remains constant. Which
B. Discharge a small contaminant amount rather than initiating the response procedure. comparison is most useful for interpreting Marine engineering or electrical
C. Make an unverified ballast change solely to improve trim. systems applicable to the named officer/module?
D. Correct a required safety-equipment deficiency before sailing when the vessel A. Reset a protective trip repeatedly without finding the cause.
cannot legally or safely depart. B. Review pressure, temperature, lubrication, electrical load, alarm history and
Correct Answer: D equipment status and compare the findings with the applicable criteria.
Explanation: This is the most appropriate option because it connects the observed C. Disable an alarm that is interrupting operations.
condition to the governing requirement and leaves a record of why the decision was made. D. Make several plant changes simultaneously before recording the original condition.
Correct Answer: B
7. An enclosed-space task is proposed without a completed entry check. A change
Explanation: The correct choice follows a verify-act-confirm sequence. That is more
affecting Marine safety systems, lifesaving appliances and emergency procedures
reliable than bypassing controls or making multiple uncontrolled changes.
is being considered. How should it be handled?
A. Continue the transfer until the planned quantity is complete. 16. A machinery temperature rises above its normal operating trend; a machinery
B. Depart with required safety equipment unavailable because conditions are calm. temperature rises 20 C above its normal trend. Which action best distinguishes
C. Stop or control the operation, protect personnel and follow the required emergency the underlying cause from a symptom in Marine engineering?
or pollution-response procedure. A. Increase machinery load to see whether the abnormal indication clears.
D. Wash a small spill overboard rather than initiating the response process. B. Make several plant changes simultaneously before recording the original condition.
Correct Answer: C C. Compare operating pressures/temperatures, equipment status and recent changes to
Explanation: The correct choice follows a verify-act-confirm sequence. That is more isolate the fault safely, then confirm that the corrective action is effective before
reliable than bypassing controls or making multiple uncontrolled changes. closure.
D. Reset a protective trip repeatedly without finding the cause.
8. Required lifesaving equipment is not ready before departure; a machinery
Correct Answer: C
temperature rises 20 C above its normal trend. The abnormal condition directly
Explanation: The strongest exam-style response is the one that controls immediate risk,
affects Marine safety systems. What is the most appropriate response? checks the relevant condition, and then acts within the defined requirements for Marine
A. Enter an enclosed space based only on a prior atmosphere test. engineering.
B. Correct a required safety-equipment deficiency and verify readiness before
proceeding. 17. A vessel must plan a passage through constrained waters. Which response is
C. Wash a small spill overboard rather than initiating the response process. most consistent with the professional or compliance requirements governing
D. Continue the transfer until the planned quantity is complete. electrical systems applicable to the named officer/module?
Correct Answer: B A. Use all available means to assess collision risk and take early, substantial action
Explanation: The strongest exam-style response is the one that controls immediate risk, consistent with the applicable navigation rules.
checks the relevant condition, and then acts within the defined requirements for Marine B. Use a single navigation source after another source shows a material discrepancy.
safety systems. C. Assume constant bearing is harmless when range is decreasing.
D. Silence a machinery alarm and continue at the same load without investigation.
9. A navigation fix does not agree with another available source. Which
Correct Answer: A
documentation approach best supports traceability for lifesaving appliances?
Explanation: The correct response protects the integrity of the process: establish the
A. Assume constant bearing is harmless when range is decreasing. facts, apply the appropriate control, and verify the result before closure.
B. Silence a machinery alarm and continue at the same load without investigation.
C. Use a single navigation source after another source shows a material discrepancy. 18. A spill occurs during machinery or cargo operations. Which handoff practice
D. Record the observed condition, supporting evidence, decision and responsible best reduces error risk for Pollution prevention, MARPOL principles and
follow-up; communicate any unresolved risk to the next responsible person. environmental protection?
Correct Answer: D A. Wash a small spill overboard rather than initiating the response process.
Explanation: The correct response protects the integrity of the process: establish the B. Record the observed condition, supporting evidence, decision and responsible
facts, apply the appropriate control, and verify the result before closure. follow-up; communicate any unresolved risk to the next responsible person.
C. Enter an enclosed space based only on a prior atmosphere test.
D. Depart with required safety equipment unavailable because conditions are calm.
Correct Answer: B
Explanation: This approach preserves control of the situation while producing evidence
that can confirm whether the action actually corrected the issue involving Pollution
prevention, MARPOL principles and environmental protection.
1
,USCG General Subjects Exam Module Assistant Engineer Uninspected Fishing Vessel
19. A pollution-prevention barrier is found compromised during transfer. Which 28. Visibility falls and several targets appear on radar; the vessel draft
decision about Pollution prevention is best supported by the available evidence? increases after cargo loading. The abnormal condition directly affects Collision
A. Continue the transfer until the planned quantity is complete. avoidance, maneuvering, pilotage and restricted-water operations. What is the
B. Depart with required safety equipment unavailable because conditions are calm. most appropriate response?
C. Wash a small spill overboard rather than initiating the response process. A. Make a series of small course changes that are difficult to detect.
D. Stop or control the operation, protect personnel and follow the required emergency B. Rely on one electronic source when independent information conflicts.
or pollution-response procedure. C. Assume there is no risk because the other vessel is visually small.
Correct Answer: D D. Cross-check position, traffic and navigation sources before altering the passage
Explanation: This answer uses verified evidence before action, which reduces the chance plan.
of masking the real problem and supports a traceable decision about Pollution Correct Answer: D
prevention. Explanation: The selected action best supports safe, compliant, and technically sound
performance because it addresses Collision avoidance, maneuvering, pilotage and
20. A pollution-prevention control is compromised during operations; a navigation
restricted-water operations using observable evidence rather than convenience.
fix differs by 0.8 nautical mile from another source. Which review step adds the
most value before closing work involving MARPOL principles? 29. Another vessel remains on nearly constant bearing while range decreases.
A. Verify the loading and stability data before accepting a cargo or ballast change, Which documentation approach best supports traceability for Collision avoidance?
then confirm that the corrective action is effective before closure. A. Record the observed condition, supporting evidence, decision and responsible
B. Make an unverified ballast change solely to improve trim. follow-up; communicate any unresolved risk to the next responsible person.
C. Depart with required safety equipment inoperative because the voyage is short. B. Continue on an uncertain position until the next scheduled fix.
D. Discharge a small contaminant amount rather than initiating the response procedure. C. Assume there is no risk because the other vessel is visually small.
Correct Answer: A D. Make a series of small course changes that are difficult to detect.
Explanation: The selected action best supports safe, compliant, and technically sound Correct Answer: A
performance because it addresses MARPOL principles using observable evidence rather than Explanation: A defensible professional decision should be based on current evidence and
convenience. applicable criteria. The other choices rely on assumption, remove safeguards, or change
conditions before the cause is understood.
21. A spill occurs during machinery or cargo operations. With respect to
environmental protection, what is the best FIRST action? 30. A pre-departure check identifies a safety-equipment deficiency. Which action
A. Depart with required safety equipment unavailable because conditions are calm. is most likely to prevent recurrence of a problem involving restricted-water
B. Continue the transfer until the planned quantity is complete. operations?
C. Stop or control the operation, protect personnel and follow the required emergency A. Depart with required safety equipment inoperative because the voyage is short.
or pollution-response procedure. B. Discharge a small contaminant amount rather than initiating the response procedure.
D. 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,
Correct Answer: C then confirm that the corrective action is effective before closure.
Explanation: A defensible professional decision should be based on current evidence and D. Make an unverified ballast change solely to improve trim.
applicable criteria. The other choices rely on assumption, remove safeguards, or change Correct Answer: C
conditions before the cause is understood. Explanation: This is the most appropriate option because it connects the observed
condition to the governing requirement and leaves a record of why the decision was made.
22. Visibility falls and several targets appear on radar. Which evidence is most
important when evaluating STCW competence, drills, records and professional 31. A position fix disagrees with the expected track. Which sequence is most
watchkeeping standards? appropriate when carrying out Navigation rules, watchkeeping responsibilities and
A. Rely on one electronic source when independent information conflicts. bridge resource management?
B. Review position sources, charted hazards, depth/under-keel clearance and traffic A. Assume there is no risk because the other vessel is visually small.
and compare the findings with the applicable criteria. B. Continue on an uncertain position until the next scheduled fix.
C. Make a series of small course changes that are difficult to detect. C. Rely on one electronic source when independent information conflicts.
D. Continue on an uncertain position until the next scheduled fix. D. Use all available means to determine collision risk and take early, substantial
Correct Answer: B action consistent with the applicable navigation rules, then verify the resulting
Explanation: This is the most appropriate option because it connects the observed state before moving to the next step.
condition to the governing requirement and leaves a record of why the decision was made. Correct Answer: D
Explanation: The correct choice follows a verify-act-confirm sequence. That is more
23. A stability calculation is required after cargo or ballast changes. Which
reliable than bypassing controls or making multiple uncontrolled changes.
response best controls the primary risk associated with STCW competence?
A. Use all available means to assess collision risk and take early, substantial action 32. Another vessel remains on nearly constant bearing while range decreases; a
consistent with the applicable navigation rules. target bearing remains nearly constant as range decreases. Which choice
B. Use a single navigation source after another source shows a material discrepancy. demonstrates the strongest control of Navigation rules?
C. Assume constant bearing is harmless when range is decreasing. A. Cross-check position, traffic and navigation sources before altering the passage
D. Silence a machinery alarm and continue at the same load without investigation. plan.
Correct Answer: A B. Make a series of small course changes that are difficult to detect.
Explanation: The correct choice follows a verify-act-confirm sequence. That is more C. Rely on one electronic source when independent information conflicts.
reliable than bypassing controls or making multiple uncontrolled changes. D. Assume there is no risk because the other vessel is visually small.
24. Another vessel remains on nearly constant bearing while range decreases; a Correct Answer: A
Explanation: The strongest exam-style response is the one that controls immediate risk,
navigation fix differs by 0.8 nautical mile from another source. Before
checks the relevant condition, and then acts within the defined requirements for
proceeding with work involving professional watchkeeping standards, what should
Navigation rules.
be verified?
A. Make a series of small course changes that are difficult to detect. 33. Another vessel remains on nearly constant bearing while range decreases. What
B. Rely on one electronic source when independent information conflicts. is required before accepting the result related to watchkeeping responsibilities?
C. Review position sources, charted hazards, depth/under-keel clearance and traffic A. Continue on an uncertain position until the next scheduled fix.
and compare the findings with the applicable criteria. B. Assume there is no risk because the other vessel is visually small.
D. Assume there is no risk because the other vessel is visually small. C. Make a series of small course changes that are difficult to detect.
Correct Answer: C D. Review bearing/range trend, own-ship course/speed, target aspect and applicable
Explanation: The strongest exam-style response is the one that controls immediate risk, rule and compare the findings with the applicable criteria.
checks the relevant condition, and then acts within the defined requirements for Correct Answer: D
professional watchkeeping standards. Explanation: The correct response protects the integrity of the process: establish the
facts, apply the appropriate control, and verify the result before closure.
25. A stability calculation is required after cargo or ballast changes. Which
troubleshooting approach is most appropriate for Communications, GMDSS awareness 34. A deck watch detects a change in bearing to another vessel. Under these
and distress/urgency procedures? conditions, when should the issue involving bridge resource management be
A. Silence a machinery alarm and continue at the same load without investigation. escalated?
B. Use a single navigation source after another source shows a material discrepancy. A. Discharge a small contaminant amount rather than initiating the response procedure.
C. Assume constant bearing is harmless when range is decreasing. B. Correct a required safety-equipment deficiency before sailing when the vessel
D. Use all available means to assess collision risk and take early, substantial action cannot legally or safely depart.
consistent with the applicable navigation rules. C. Make an unverified ballast change solely to improve trim.
Correct Answer: D D. Depart with required safety equipment inoperative because the voyage is short.
Explanation: The correct response protects the integrity of the process: establish the Correct Answer: B
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 bridge
26. An alarm occurs during machinery operation. Which action best supports a
resource management.
defensible decision about GMDSS awareness?
A. Correct a required safety-equipment deficiency before sailing when the vessel 35. A deck load is shifted to a higher position. Which comparison is most useful
cannot legally or safely depart. for interpreting Ship stability, trim, loading and basic stability calculations?
B. Make an unverified ballast change solely to improve trim. A. Correct a list by moving weight without checking stability impact.
C. Depart with required safety equipment inoperative because the voyage is short. B. Move heavy cargo higher to free lower deck space without recalculation.
D. Discharge a small contaminant amount rather than initiating the response procedure. C. Accept a loading condition based only on even draft readings.
Correct Answer: A D. Review displacement, weight location, GM/stability data and tank condition and
Explanation: This approach preserves control of the situation while producing evidence compare the findings with the applicable criteria.
that can confirm whether the action actually corrected the issue involving GMDSS Correct Answer: D
awareness. Explanation: This answer uses verified evidence before action, which reduces the chance
of masking the real problem and supports a traceable decision about Ship stability,
27. An engineering watch observes an abnormal temperature or pressure. A change
trim, loading and basic stability calculations.
affecting distress/urgency procedures is being considered. How should it be
handled? 36. Ballast is proposed to correct a list; visibility falls below one nautical
A. Use all available means to assess collision risk and take early, substantial action mile. Which action best distinguishes the underlying cause from a symptom in Ship
consistent with the applicable navigation rules. stability?
B. Assume constant bearing is harmless when range is decreasing. A. Account for free-surface and weight-shift effects when evaluating stability and
C. Silence a machinery alarm and continue at the same load without investigation. trim, then confirm that the corrective action is effective before closure.
D. Use a single navigation source after another source shows a material discrepancy. B. Ignore slack-tank effects because total liquid weight is unchanged.
Correct Answer: A C. Accept a loading condition based only on even draft readings.
Explanation: This answer uses verified evidence before action, which reduces the chance D. Correct a list by moving weight without checking stability impact.
of masking the real problem and supports a traceable decision about distress/urgency Correct Answer: A
procedures. Explanation: The selected action best supports safe, compliant, and technically sound
performance because it addresses Ship stability using observable evidence rather than
convenience.
2
, USCG General Subjects Exam Module Assistant Engineer Uninspected Fishing Vessel
37. A deck load is shifted to a higher position. Which response is most 46. An engineering watch observes an abnormal temperature or pressure. Which
consistent with the professional or compliance requirements governing basic action best supports a defensible decision about Fire prevention?
stability calculations? 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. Recalculate the relevant stability condition before accepting the loading or D. Correct a required safety-equipment deficiency before sailing when the vessel
ballast change. cannot legally or safely depart.
D. Ignore slack-tank effects because total liquid weight is unchanged. Correct Answer: D
Correct Answer: C 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.
47. A machinery temperature rises above its normal operating trend. A change
affecting damage control is being considered. How should it be handled?
38. A slack tank creates additional free-surface effect. Which handoff practice A. Reset a protective trip repeatedly without finding the cause.
best reduces error risk for Cargo operations, stowage, securing and hazards B. Disable an alarm that is interrupting operations.
relevant to vessel type? C. Make several plant changes simultaneously before recording the original condition.
A. Accept a loading condition based only on even draft readings. D. Protect the plant, verify the indication and diagnose the affected system before
B. Ignore slack-tank effects because total liquid weight is unchanged. resetting or increasing load.
C. Move heavy cargo higher to free lower deck space without recalculation. Correct Answer: D
D. Record the observed condition, supporting evidence, decision and responsible Explanation: The correct choice follows a verify-act-confirm sequence. That is more
follow-up; communicate any unresolved risk to the next responsible person. reliable than bypassing controls or making multiple uncontrolled changes.
Correct Answer: D
48. A vessel approaches restricted visibility with traffic nearby; visibility
Explanation: This is the most appropriate option because it connects the observed
condition to the governing requirement and leaves a record of why the decision was made.
falls below one nautical mile. The abnormal condition directly affects
abandonment procedures. What is the most appropriate response?
39. Cargo loading changes the vessel's vertical center of gravity. Which decision A. Depart with required safety equipment inoperative because the voyage is short.
about Cargo operations is best supported by the available evidence? B. Discharge a small contaminant amount rather than initiating the response procedure.
A. Recalculate the relevant stability condition before accepting the loading or C. Correct a required safety-equipment deficiency before sailing when the vessel
ballast change. cannot legally or safely depart.
B. Correct a list by moving weight without checking stability impact. D. Make an unverified ballast change solely to improve trim.
C. Move heavy cargo higher to free lower deck space without recalculation. Correct Answer: C
D. Accept a loading condition based only on even draft readings. Explanation: The strongest exam-style response is the one that controls immediate risk,
Correct Answer: A checks the relevant condition, and then acts within the defined requirements for
Explanation: The correct choice follows a verify-act-confirm sequence. That is more abandonment procedures.
reliable than bypassing controls or making multiple uncontrolled changes.
49. An alarm appears after a change in plant configuration. Which documentation
40. A pre-departure check identifies a safety-equipment deficiency; a navigation approach best supports traceability for Marine engineering or electrical systems
fix differs by 0.8 nautical mile from another source. Which review step adds the applicable to the named officer/module?
most value before closing work involving hazards relevant to vessel type? A. Disable an alarm that is interrupting operations.
A. Discharge a small contaminant amount rather than initiating the response procedure. B. Reset a protective trip repeatedly without finding the cause.
B. Make an unverified ballast change solely to improve trim. C. Record the observed condition, supporting evidence, decision and responsible
C. Verify the loading and stability data before accepting a cargo or ballast change, follow-up; communicate any unresolved risk to the next responsible person.
then confirm that the corrective action is effective before closure. D. Increase machinery load to see whether the abnormal indication clears.
D. Depart with required safety equipment inoperative because the voyage is short. Correct Answer: C
Correct Answer: C Explanation: The correct response protects the integrity of the process: establish the
Explanation: The strongest exam-style response is the one that controls immediate risk, facts, apply the appropriate control, and verify the result before closure.
checks the relevant condition, and then acts within the defined requirements for hazards
relevant to vessel type.
50. An electrical protective device trips repeatedly. Which action is most likely
to prevent recurrence of a problem involving Marine engineering?
41. A pollution-prevention barrier is found compromised during transfer. With A. Make several plant changes simultaneously before recording the original condition.
respect to Marine safety systems, lifesaving appliances and emergency procedures, B. Increase machinery load to see whether the abnormal indication clears.
what is the best FIRST action? C. Disable an alarm that is interrupting operations.
A. Depart with required safety equipment unavailable because conditions are calm. D. Compare operating pressures/temperatures, equipment status and recent changes to
B. Continue the transfer until the planned quantity is complete. isolate the fault safely, then confirm that the corrective action is effective before
C. Stop or control the operation, protect personnel and follow the required emergency closure.
or pollution-response procedure. 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: C that can confirm whether the action actually corrected the issue involving Marine
Explanation: The correct response protects the integrity of the process: establish the engineering.
facts, apply the appropriate control, and verify the result before closure.
51. A pollution-prevention control is compromised during operations. Which
42. A spill occurs during machinery or cargo operations. Which evidence is most sequence is most appropriate when carrying out electrical systems applicable to
important when evaluating Marine safety systems? the named officer/module?
A. Wash a small spill overboard rather than initiating the response process. A. Assume constant bearing is harmless when range is decreasing.
B. Enter an enclosed space based only on a prior atmosphere test. B. Use all available means to assess collision risk and take early, substantial action
C. Depart with required safety equipment unavailable because conditions are calm. consistent with the applicable navigation rules, then verify the resulting state
D. Review equipment inventory, inspection status and operational readiness and compare before moving to the next step.
the findings with the applicable criteria. C. Silence a machinery alarm and continue at the same load without investigation.
Correct Answer: D D. Use a single navigation source after another source shows a material discrepancy.
Explanation: This approach preserves control of the situation while producing evidence Correct Answer: B
that can confirm whether the action actually corrected the issue involving Marine safety Explanation: This answer uses verified evidence before action, which reduces the chance
systems. of masking the real problem and supports a traceable decision about electrical systems
applicable to the named officer/module.
43. A stability calculation is required after cargo or ballast changes. Which
response best controls the primary risk associated with lifesaving appliances? 52. Required lifesaving equipment is not ready before departure; a target bearing
A. Silence a machinery alarm and continue at the same load without investigation. remains nearly constant as range decreases. Which choice demonstrates the
B. Use all available means to assess collision risk and take early, substantial action strongest control of Pollution prevention, MARPOL principles and environmental
consistent with the applicable navigation rules. protection?
C. Use a single navigation source after another source shows a material discrepancy. A. Correct a required safety-equipment deficiency and verify readiness before
D. Assume constant bearing is harmless when range is decreasing. proceeding.
Correct Answer: B B. Enter an enclosed space based only on a prior atmosphere test.
Explanation: This answer uses verified evidence before action, which reduces the chance C. Wash a small spill overboard rather than initiating the response process.
of masking the real problem and supports a traceable decision about lifesaving D. Continue the transfer until the planned quantity is complete.
appliances. Correct Answer: A
Explanation: The selected action best supports safe, compliant, and technically sound
44. A pollution-prevention barrier is found compromised during transfer; a target
performance because it addresses Pollution prevention, MARPOL principles and
bearing remains nearly constant as range decreases. Before proceeding with work environmental protection using observable evidence rather than convenience.
involving emergency procedures, what should be verified?
A. Review equipment inventory, inspection status and operational readiness and compare 53. An enclosed-space task is proposed without a completed entry check. What is
the findings with the applicable criteria. required before accepting the result related to Pollution prevention?
B. Enter an enclosed space based only on a prior atmosphere test. A. Depart with required safety equipment unavailable because conditions are calm.
C. Wash a small spill overboard rather than initiating the response process. B. Continue the transfer until the planned quantity is complete.
D. Continue the transfer until the planned quantity is complete. C. Enter an enclosed space based only on a prior atmosphere test.
Correct Answer: A D. Review source/quantity of release, containment condition, notifications and
Explanation: The selected action best supports safe, compliant, and technically sound response equipment and compare the findings with the applicable criteria.
performance because it addresses emergency procedures using observable evidence rather Correct Answer: D
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
45. An electrical protective device trips repeatedly. Which troubleshooting conditions before the cause is understood.
approach is most appropriate for Fire prevention, firefighting, damage control
and abandonment procedures? 54. An engineering watch observes an abnormal temperature or pressure. Under
A. Disable an alarm that is interrupting operations. these conditions, when should the issue involving MARPOL principles be escalated?
B. Reset a protective trip repeatedly without finding the cause. A. Depart with required safety equipment inoperative because the voyage is short.
C. Increase machinery load to see whether the abnormal indication clears. B. Correct a required safety-equipment deficiency before sailing when the vessel
D. Protect the plant, verify the indication and diagnose the affected system before cannot legally or safely depart.
resetting or increasing load. C. Discharge a small contaminant amount rather than initiating the response procedure.
Correct Answer: D D. Make an unverified ballast change solely to improve trim.
Explanation: A defensible professional decision should be based on current evidence and Correct Answer: B
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.
3
Engineer Uninspected Fishing Vessel
ID14097
,USCG General Subjects Exam Module Assistant Engineer Uninspected Fishing Vessel
1. A slack tank creates additional free-surface effect. With respect to Ship 10. An enclosed-space task is proposed without a completed entry check. Which
stability, trim, loading and basic stability calculations, what is the best FIRST action is most likely to prevent recurrence of a problem involving emergency
action? procedures?
A. Move heavy cargo higher to free lower deck space without recalculation. A. Wash a small spill overboard rather than initiating the response process.
B. Recalculate the relevant stability condition before accepting the loading or B. Enter an enclosed space based only on a prior atmosphere test.
ballast change. C. Correct a required safety-equipment deficiency and verify readiness before
C. Correct a list by moving weight without checking stability impact. proceeding, then confirm that the corrective action is effective before closure.
D. Ignore slack-tank effects because total liquid weight is unchanged. D. Depart with required safety equipment unavailable because conditions are calm.
Correct Answer: B 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 emergency
procedures.
2. Cargo loading changes the vessel's vertical center of gravity. Which evidence
is most important when evaluating Ship stability? 11. A machinery temperature rises above its normal operating trend. Which
A. Accept a loading condition based only on even draft readings. sequence is most appropriate when carrying out Fire prevention, firefighting,
B. Review loading manual limits, free-surface moment and resulting draft/trim and damage control and abandonment procedures?
compare the findings with the applicable criteria. A. Reset a protective trip repeatedly without finding the cause.
C. Ignore slack-tank effects because total liquid weight is unchanged. B. Disable an alarm that is interrupting operations.
D. Move heavy cargo higher to free lower deck space without recalculation. C. Protect the plant, verify the indication and diagnose the affected system before
Correct Answer: B resetting or increasing load, then verify the resulting state before moving to the
Explanation: This approach preserves control of the situation while producing evidence next step.
that can confirm whether the action actually corrected the issue involving Ship D. Make several plant changes simultaneously before recording the original condition.
stability. Correct Answer: C
Explanation: This answer uses verified evidence before action, which reduces the chance
3. A slack tank creates additional free-surface effect. Which response best
of masking the real problem and supports a traceable decision about Fire prevention,
controls the primary risk associated with basic stability calculations? firefighting, damage control and abandonment procedures.
A. Correct a list by moving weight without checking stability impact.
B. Move heavy cargo higher to free lower deck space without recalculation. 12. A pollution-prevention control is compromised during operations; a navigation
C. Recalculate the relevant stability condition before accepting the loading or fix differs by 0.8 nautical mile from another source. Which choice demonstrates
ballast change. the strongest control of Fire prevention?
D. Accept a loading condition based only on even draft readings. A. Depart with required safety equipment inoperative because the voyage is short.
Correct Answer: C B. Correct a required safety-equipment deficiency before sailing when the vessel
Explanation: This answer uses verified evidence before action, which reduces the chance cannot legally or safely depart.
of masking the real problem and supports a traceable decision about basic stability C. Discharge a small contaminant amount rather than initiating the response procedure.
calculations. D. Make an unverified ballast change solely to improve trim.
Correct Answer: B
4. A deck load is shifted to a higher position; the vessel draft increases after
Explanation: The selected action best supports safe, compliant, and technically sound
cargo loading. Before proceeding with work involving Cargo operations, stowage,
performance because it addresses Fire prevention using observable evidence rather than
securing and hazards relevant to vessel type, what should be verified? convenience.
A. Ignore slack-tank effects because total liquid weight is unchanged.
B. Accept a loading condition based only on even draft readings. 13. An electrical protective device trips repeatedly. What is required before
C. Correct a list by moving weight without checking stability impact. accepting the result related to damage control?
D. Review loading manual limits, free-surface moment and resulting draft/trim and A. Disable an alarm that is interrupting operations.
compare the findings with the applicable criteria. B. Reset a protective trip repeatedly without finding the cause.
Correct Answer: D C. Review pressure, temperature, lubrication, electrical load, alarm history and
Explanation: The selected action best supports safe, compliant, and technically sound equipment status and compare the findings with the applicable criteria.
performance because it addresses Cargo operations, stowage, securing and hazards D. Increase machinery load to see whether the abnormal indication clears.
relevant to vessel type using observable evidence rather than convenience. Correct Answer: C
Explanation: A defensible professional decision should be based on current evidence and
5. Ballast is proposed to correct a list. Which troubleshooting approach is most applicable criteria. The other choices rely on assumption, remove safeguards, or change
appropriate for Cargo operations? conditions before the cause is understood.
A. Move heavy cargo higher to free lower deck space without recalculation.
B. Correct a list by moving weight without checking stability impact. 14. An alarm occurs during machinery operation. Under these conditions, when
C. Recalculate the relevant stability condition before accepting the loading or should the issue involving abandonment procedures be escalated?
ballast change. A. Make an unverified ballast change solely to improve trim.
D. Ignore slack-tank effects because total liquid weight is unchanged. B. Depart with required safety equipment inoperative because the voyage is short.
Correct Answer: C C. Discharge a small contaminant amount rather than initiating the response procedure.
Explanation: A defensible professional decision should be based on current evidence and D. Correct a required safety-equipment deficiency before sailing when the vessel
applicable criteria. The other choices rely on assumption, remove safeguards, or change cannot legally or safely depart.
conditions before the cause is understood. Correct Answer: D
Explanation: This is the most appropriate option because it connects the observed
6. A vessel approaches restricted visibility with traffic nearby. Which action
condition to the governing requirement and leaves a record of why the decision was made.
best supports a defensible decision about hazards relevant to vessel type?
A. Depart with required safety equipment inoperative because the voyage is short. 15. A pump loses discharge pressure while demand remains constant. Which
B. Discharge a small contaminant amount rather than initiating the response procedure. comparison is most useful for interpreting Marine engineering or electrical
C. Make an unverified ballast change solely to improve trim. systems applicable to the named officer/module?
D. Correct a required safety-equipment deficiency before sailing when the vessel A. Reset a protective trip repeatedly without finding the cause.
cannot legally or safely depart. B. Review pressure, temperature, lubrication, electrical load, alarm history and
Correct Answer: D equipment status and compare the findings with the applicable criteria.
Explanation: This is the most appropriate option because it connects the observed C. Disable an alarm that is interrupting operations.
condition to the governing requirement and leaves a record of why the decision was made. D. Make several plant changes simultaneously before recording the original condition.
Correct Answer: B
7. An enclosed-space task is proposed without a completed entry check. A change
Explanation: The correct choice follows a verify-act-confirm sequence. That is more
affecting Marine safety systems, lifesaving appliances and emergency procedures
reliable than bypassing controls or making multiple uncontrolled changes.
is being considered. How should it be handled?
A. Continue the transfer until the planned quantity is complete. 16. A machinery temperature rises above its normal operating trend; a machinery
B. Depart with required safety equipment unavailable because conditions are calm. temperature rises 20 C above its normal trend. Which action best distinguishes
C. Stop or control the operation, protect personnel and follow the required emergency the underlying cause from a symptom in Marine engineering?
or pollution-response procedure. A. Increase machinery load to see whether the abnormal indication clears.
D. Wash a small spill overboard rather than initiating the response process. B. Make several plant changes simultaneously before recording the original condition.
Correct Answer: C C. Compare operating pressures/temperatures, equipment status and recent changes to
Explanation: The correct choice follows a verify-act-confirm sequence. That is more isolate the fault safely, then confirm that the corrective action is effective before
reliable than bypassing controls or making multiple uncontrolled changes. closure.
D. Reset a protective trip repeatedly without finding the cause.
8. Required lifesaving equipment is not ready before departure; a machinery
Correct Answer: C
temperature rises 20 C above its normal trend. The abnormal condition directly
Explanation: The strongest exam-style response is the one that controls immediate risk,
affects Marine safety systems. What is the most appropriate response? checks the relevant condition, and then acts within the defined requirements for Marine
A. Enter an enclosed space based only on a prior atmosphere test. engineering.
B. Correct a required safety-equipment deficiency and verify readiness before
proceeding. 17. A vessel must plan a passage through constrained waters. Which response is
C. Wash a small spill overboard rather than initiating the response process. most consistent with the professional or compliance requirements governing
D. Continue the transfer until the planned quantity is complete. electrical systems applicable to the named officer/module?
Correct Answer: B A. Use all available means to assess collision risk and take early, substantial action
Explanation: The strongest exam-style response is the one that controls immediate risk, consistent with the applicable navigation rules.
checks the relevant condition, and then acts within the defined requirements for Marine B. Use a single navigation source after another source shows a material discrepancy.
safety systems. C. Assume constant bearing is harmless when range is decreasing.
D. Silence a machinery alarm and continue at the same load without investigation.
9. A navigation fix does not agree with another available source. Which
Correct Answer: A
documentation approach best supports traceability for lifesaving appliances?
Explanation: The correct response protects the integrity of the process: establish the
A. Assume constant bearing is harmless when range is decreasing. facts, apply the appropriate control, and verify the result before closure.
B. Silence a machinery alarm and continue at the same load without investigation.
C. Use a single navigation source after another source shows a material discrepancy. 18. A spill occurs during machinery or cargo operations. Which handoff practice
D. Record the observed condition, supporting evidence, decision and responsible best reduces error risk for Pollution prevention, MARPOL principles and
follow-up; communicate any unresolved risk to the next responsible person. environmental protection?
Correct Answer: D A. Wash a small spill overboard rather than initiating the response process.
Explanation: The correct response protects the integrity of the process: establish the B. Record the observed condition, supporting evidence, decision and responsible
facts, apply the appropriate control, and verify the result before closure. follow-up; communicate any unresolved risk to the next responsible person.
C. Enter an enclosed space based only on a prior atmosphere test.
D. Depart with required safety equipment unavailable because conditions are calm.
Correct Answer: B
Explanation: This approach preserves control of the situation while producing evidence
that can confirm whether the action actually corrected the issue involving Pollution
prevention, MARPOL principles and environmental protection.
1
,USCG General Subjects Exam Module Assistant Engineer Uninspected Fishing Vessel
19. A pollution-prevention barrier is found compromised during transfer. Which 28. Visibility falls and several targets appear on radar; the vessel draft
decision about Pollution prevention is best supported by the available evidence? increases after cargo loading. The abnormal condition directly affects Collision
A. Continue the transfer until the planned quantity is complete. avoidance, maneuvering, pilotage and restricted-water operations. What is the
B. Depart with required safety equipment unavailable because conditions are calm. most appropriate response?
C. Wash a small spill overboard rather than initiating the response process. A. Make a series of small course changes that are difficult to detect.
D. Stop or control the operation, protect personnel and follow the required emergency B. Rely on one electronic source when independent information conflicts.
or pollution-response procedure. C. Assume there is no risk because the other vessel is visually small.
Correct Answer: D D. Cross-check position, traffic and navigation sources before altering the passage
Explanation: This answer uses verified evidence before action, which reduces the chance plan.
of masking the real problem and supports a traceable decision about Pollution Correct Answer: D
prevention. Explanation: The selected action best supports safe, compliant, and technically sound
performance because it addresses Collision avoidance, maneuvering, pilotage and
20. A pollution-prevention control is compromised during operations; a navigation
restricted-water operations using observable evidence rather than convenience.
fix differs by 0.8 nautical mile from another source. Which review step adds the
most value before closing work involving MARPOL principles? 29. Another vessel remains on nearly constant bearing while range decreases.
A. Verify the loading and stability data before accepting a cargo or ballast change, Which documentation approach best supports traceability for Collision avoidance?
then confirm that the corrective action is effective before closure. A. Record the observed condition, supporting evidence, decision and responsible
B. Make an unverified ballast change solely to improve trim. follow-up; communicate any unresolved risk to the next responsible person.
C. Depart with required safety equipment inoperative because the voyage is short. B. Continue on an uncertain position until the next scheduled fix.
D. Discharge a small contaminant amount rather than initiating the response procedure. C. Assume there is no risk because the other vessel is visually small.
Correct Answer: A D. Make a series of small course changes that are difficult to detect.
Explanation: The selected action best supports safe, compliant, and technically sound Correct Answer: A
performance because it addresses MARPOL principles using observable evidence rather than Explanation: A defensible professional decision should be based on current evidence and
convenience. applicable criteria. The other choices rely on assumption, remove safeguards, or change
conditions before the cause is understood.
21. A spill occurs during machinery or cargo operations. With respect to
environmental protection, what is the best FIRST action? 30. A pre-departure check identifies a safety-equipment deficiency. Which action
A. Depart with required safety equipment unavailable because conditions are calm. is most likely to prevent recurrence of a problem involving restricted-water
B. Continue the transfer until the planned quantity is complete. operations?
C. Stop or control the operation, protect personnel and follow the required emergency A. Depart with required safety equipment inoperative because the voyage is short.
or pollution-response procedure. B. Discharge a small contaminant amount rather than initiating the response procedure.
D. 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,
Correct Answer: C then confirm that the corrective action is effective before closure.
Explanation: A defensible professional decision should be based on current evidence and D. Make an unverified ballast change solely to improve trim.
applicable criteria. The other choices rely on assumption, remove safeguards, or change Correct Answer: C
conditions before the cause is understood. Explanation: This is the most appropriate option because it connects the observed
condition to the governing requirement and leaves a record of why the decision was made.
22. Visibility falls and several targets appear on radar. Which evidence is most
important when evaluating STCW competence, drills, records and professional 31. A position fix disagrees with the expected track. Which sequence is most
watchkeeping standards? appropriate when carrying out Navigation rules, watchkeeping responsibilities and
A. Rely on one electronic source when independent information conflicts. bridge resource management?
B. Review position sources, charted hazards, depth/under-keel clearance and traffic A. Assume there is no risk because the other vessel is visually small.
and compare the findings with the applicable criteria. B. Continue on an uncertain position until the next scheduled fix.
C. Make a series of small course changes that are difficult to detect. C. Rely on one electronic source when independent information conflicts.
D. Continue on an uncertain position until the next scheduled fix. D. Use all available means to determine collision risk and take early, substantial
Correct Answer: B action consistent with the applicable navigation rules, then verify the resulting
Explanation: This is the most appropriate option because it connects the observed state before moving to the next step.
condition to the governing requirement and leaves a record of why the decision was made. Correct Answer: D
Explanation: The correct choice follows a verify-act-confirm sequence. That is more
23. A stability calculation is required after cargo or ballast changes. Which
reliable than bypassing controls or making multiple uncontrolled changes.
response best controls the primary risk associated with STCW competence?
A. Use all available means to assess collision risk and take early, substantial action 32. Another vessel remains on nearly constant bearing while range decreases; a
consistent with the applicable navigation rules. target bearing remains nearly constant as range decreases. Which choice
B. Use a single navigation source after another source shows a material discrepancy. demonstrates the strongest control of Navigation rules?
C. Assume constant bearing is harmless when range is decreasing. A. Cross-check position, traffic and navigation sources before altering the passage
D. Silence a machinery alarm and continue at the same load without investigation. plan.
Correct Answer: A B. Make a series of small course changes that are difficult to detect.
Explanation: The correct choice follows a verify-act-confirm sequence. That is more C. Rely on one electronic source when independent information conflicts.
reliable than bypassing controls or making multiple uncontrolled changes. D. Assume there is no risk because the other vessel is visually small.
24. Another vessel remains on nearly constant bearing while range decreases; a Correct Answer: A
Explanation: The strongest exam-style response is the one that controls immediate risk,
navigation fix differs by 0.8 nautical mile from another source. Before
checks the relevant condition, and then acts within the defined requirements for
proceeding with work involving professional watchkeeping standards, what should
Navigation rules.
be verified?
A. Make a series of small course changes that are difficult to detect. 33. Another vessel remains on nearly constant bearing while range decreases. What
B. Rely on one electronic source when independent information conflicts. is required before accepting the result related to watchkeeping responsibilities?
C. Review position sources, charted hazards, depth/under-keel clearance and traffic A. Continue on an uncertain position until the next scheduled fix.
and compare the findings with the applicable criteria. B. Assume there is no risk because the other vessel is visually small.
D. Assume there is no risk because the other vessel is visually small. C. Make a series of small course changes that are difficult to detect.
Correct Answer: C D. Review bearing/range trend, own-ship course/speed, target aspect and applicable
Explanation: The strongest exam-style response is the one that controls immediate risk, rule and compare the findings with the applicable criteria.
checks the relevant condition, and then acts within the defined requirements for Correct Answer: D
professional watchkeeping standards. Explanation: The correct response protects the integrity of the process: establish the
facts, apply the appropriate control, and verify the result before closure.
25. A stability calculation is required after cargo or ballast changes. Which
troubleshooting approach is most appropriate for Communications, GMDSS awareness 34. A deck watch detects a change in bearing to another vessel. Under these
and distress/urgency procedures? conditions, when should the issue involving bridge resource management be
A. Silence a machinery alarm and continue at the same load without investigation. escalated?
B. Use a single navigation source after another source shows a material discrepancy. A. Discharge a small contaminant amount rather than initiating the response procedure.
C. Assume constant bearing is harmless when range is decreasing. B. Correct a required safety-equipment deficiency before sailing when the vessel
D. Use all available means to assess collision risk and take early, substantial action cannot legally or safely depart.
consistent with the applicable navigation rules. C. Make an unverified ballast change solely to improve trim.
Correct Answer: D D. Depart with required safety equipment inoperative because the voyage is short.
Explanation: The correct response protects the integrity of the process: establish the Correct Answer: B
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 bridge
26. An alarm occurs during machinery operation. Which action best supports a
resource management.
defensible decision about GMDSS awareness?
A. Correct a required safety-equipment deficiency before sailing when the vessel 35. A deck load is shifted to a higher position. Which comparison is most useful
cannot legally or safely depart. for interpreting Ship stability, trim, loading and basic stability calculations?
B. Make an unverified ballast change solely to improve trim. A. Correct a list by moving weight without checking stability impact.
C. Depart with required safety equipment inoperative because the voyage is short. B. Move heavy cargo higher to free lower deck space without recalculation.
D. Discharge a small contaminant amount rather than initiating the response procedure. C. Accept a loading condition based only on even draft readings.
Correct Answer: A D. Review displacement, weight location, GM/stability data and tank condition and
Explanation: This approach preserves control of the situation while producing evidence compare the findings with the applicable criteria.
that can confirm whether the action actually corrected the issue involving GMDSS Correct Answer: D
awareness. Explanation: This answer uses verified evidence before action, which reduces the chance
of masking the real problem and supports a traceable decision about Ship stability,
27. An engineering watch observes an abnormal temperature or pressure. A change
trim, loading and basic stability calculations.
affecting distress/urgency procedures is being considered. How should it be
handled? 36. Ballast is proposed to correct a list; visibility falls below one nautical
A. Use all available means to assess collision risk and take early, substantial action mile. Which action best distinguishes the underlying cause from a symptom in Ship
consistent with the applicable navigation rules. stability?
B. Assume constant bearing is harmless when range is decreasing. A. Account for free-surface and weight-shift effects when evaluating stability and
C. Silence a machinery alarm and continue at the same load without investigation. trim, then confirm that the corrective action is effective before closure.
D. Use a single navigation source after another source shows a material discrepancy. B. Ignore slack-tank effects because total liquid weight is unchanged.
Correct Answer: A C. Accept a loading condition based only on even draft readings.
Explanation: This answer uses verified evidence before action, which reduces the chance D. Correct a list by moving weight without checking stability impact.
of masking the real problem and supports a traceable decision about distress/urgency Correct Answer: A
procedures. Explanation: The selected action best supports safe, compliant, and technically sound
performance because it addresses Ship stability using observable evidence rather than
convenience.
2
, USCG General Subjects Exam Module Assistant Engineer Uninspected Fishing Vessel
37. A deck load is shifted to a higher position. Which response is most 46. An engineering watch observes an abnormal temperature or pressure. Which
consistent with the professional or compliance requirements governing basic action best supports a defensible decision about Fire prevention?
stability calculations? 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. Recalculate the relevant stability condition before accepting the loading or D. Correct a required safety-equipment deficiency before sailing when the vessel
ballast change. cannot legally or safely depart.
D. Ignore slack-tank effects because total liquid weight is unchanged. Correct Answer: D
Correct Answer: C 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.
47. A machinery temperature rises above its normal operating trend. A change
affecting damage control is being considered. How should it be handled?
38. A slack tank creates additional free-surface effect. Which handoff practice A. Reset a protective trip repeatedly without finding the cause.
best reduces error risk for Cargo operations, stowage, securing and hazards B. Disable an alarm that is interrupting operations.
relevant to vessel type? C. Make several plant changes simultaneously before recording the original condition.
A. Accept a loading condition based only on even draft readings. D. Protect the plant, verify the indication and diagnose the affected system before
B. Ignore slack-tank effects because total liquid weight is unchanged. resetting or increasing load.
C. Move heavy cargo higher to free lower deck space without recalculation. Correct Answer: D
D. Record the observed condition, supporting evidence, decision and responsible Explanation: The correct choice follows a verify-act-confirm sequence. That is more
follow-up; communicate any unresolved risk to the next responsible person. reliable than bypassing controls or making multiple uncontrolled changes.
Correct Answer: D
48. A vessel approaches restricted visibility with traffic nearby; visibility
Explanation: This is the most appropriate option because it connects the observed
condition to the governing requirement and leaves a record of why the decision was made.
falls below one nautical mile. The abnormal condition directly affects
abandonment procedures. What is the most appropriate response?
39. Cargo loading changes the vessel's vertical center of gravity. Which decision A. Depart with required safety equipment inoperative because the voyage is short.
about Cargo operations is best supported by the available evidence? B. Discharge a small contaminant amount rather than initiating the response procedure.
A. Recalculate the relevant stability condition before accepting the loading or C. Correct a required safety-equipment deficiency before sailing when the vessel
ballast change. cannot legally or safely depart.
B. Correct a list by moving weight without checking stability impact. D. Make an unverified ballast change solely to improve trim.
C. Move heavy cargo higher to free lower deck space without recalculation. Correct Answer: C
D. Accept a loading condition based only on even draft readings. Explanation: The strongest exam-style response is the one that controls immediate risk,
Correct Answer: A checks the relevant condition, and then acts within the defined requirements for
Explanation: The correct choice follows a verify-act-confirm sequence. That is more abandonment procedures.
reliable than bypassing controls or making multiple uncontrolled changes.
49. An alarm appears after a change in plant configuration. Which documentation
40. A pre-departure check identifies a safety-equipment deficiency; a navigation approach best supports traceability for Marine engineering or electrical systems
fix differs by 0.8 nautical mile from another source. Which review step adds the applicable to the named officer/module?
most value before closing work involving hazards relevant to vessel type? A. Disable an alarm that is interrupting operations.
A. Discharge a small contaminant amount rather than initiating the response procedure. B. Reset a protective trip repeatedly without finding the cause.
B. Make an unverified ballast change solely to improve trim. C. Record the observed condition, supporting evidence, decision and responsible
C. Verify the loading and stability data before accepting a cargo or ballast change, follow-up; communicate any unresolved risk to the next responsible person.
then confirm that the corrective action is effective before closure. D. Increase machinery load to see whether the abnormal indication clears.
D. Depart with required safety equipment inoperative because the voyage is short. Correct Answer: C
Correct Answer: C Explanation: The correct response protects the integrity of the process: establish the
Explanation: The strongest exam-style response is the one that controls immediate risk, facts, apply the appropriate control, and verify the result before closure.
checks the relevant condition, and then acts within the defined requirements for hazards
relevant to vessel type.
50. An electrical protective device trips repeatedly. Which action is most likely
to prevent recurrence of a problem involving Marine engineering?
41. A pollution-prevention barrier is found compromised during transfer. With A. Make several plant changes simultaneously before recording the original condition.
respect to Marine safety systems, lifesaving appliances and emergency procedures, B. Increase machinery load to see whether the abnormal indication clears.
what is the best FIRST action? C. Disable an alarm that is interrupting operations.
A. Depart with required safety equipment unavailable because conditions are calm. D. Compare operating pressures/temperatures, equipment status and recent changes to
B. Continue the transfer until the planned quantity is complete. isolate the fault safely, then confirm that the corrective action is effective before
C. Stop or control the operation, protect personnel and follow the required emergency closure.
or pollution-response procedure. 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: C that can confirm whether the action actually corrected the issue involving Marine
Explanation: The correct response protects the integrity of the process: establish the engineering.
facts, apply the appropriate control, and verify the result before closure.
51. A pollution-prevention control is compromised during operations. Which
42. A spill occurs during machinery or cargo operations. Which evidence is most sequence is most appropriate when carrying out electrical systems applicable to
important when evaluating Marine safety systems? the named officer/module?
A. Wash a small spill overboard rather than initiating the response process. A. Assume constant bearing is harmless when range is decreasing.
B. Enter an enclosed space based only on a prior atmosphere test. B. Use all available means to assess collision risk and take early, substantial action
C. Depart with required safety equipment unavailable because conditions are calm. consistent with the applicable navigation rules, then verify the resulting state
D. Review equipment inventory, inspection status and operational readiness and compare before moving to the next step.
the findings with the applicable criteria. C. Silence a machinery alarm and continue at the same load without investigation.
Correct Answer: D D. Use a single navigation source after another source shows a material discrepancy.
Explanation: This approach preserves control of the situation while producing evidence Correct Answer: B
that can confirm whether the action actually corrected the issue involving Marine safety Explanation: This answer uses verified evidence before action, which reduces the chance
systems. of masking the real problem and supports a traceable decision about electrical systems
applicable to the named officer/module.
43. A stability calculation is required after cargo or ballast changes. Which
response best controls the primary risk associated with lifesaving appliances? 52. Required lifesaving equipment is not ready before departure; a target bearing
A. Silence a machinery alarm and continue at the same load without investigation. remains nearly constant as range decreases. Which choice demonstrates the
B. Use all available means to assess collision risk and take early, substantial action strongest control of Pollution prevention, MARPOL principles and environmental
consistent with the applicable navigation rules. protection?
C. Use a single navigation source after another source shows a material discrepancy. A. Correct a required safety-equipment deficiency and verify readiness before
D. Assume constant bearing is harmless when range is decreasing. proceeding.
Correct Answer: B B. Enter an enclosed space based only on a prior atmosphere test.
Explanation: This answer uses verified evidence before action, which reduces the chance C. Wash a small spill overboard rather than initiating the response process.
of masking the real problem and supports a traceable decision about lifesaving D. Continue the transfer until the planned quantity is complete.
appliances. Correct Answer: A
Explanation: The selected action best supports safe, compliant, and technically sound
44. A pollution-prevention barrier is found compromised during transfer; a target
performance because it addresses Pollution prevention, MARPOL principles and
bearing remains nearly constant as range decreases. Before proceeding with work environmental protection using observable evidence rather than convenience.
involving emergency procedures, what should be verified?
A. Review equipment inventory, inspection status and operational readiness and compare 53. An enclosed-space task is proposed without a completed entry check. What is
the findings with the applicable criteria. required before accepting the result related to Pollution prevention?
B. Enter an enclosed space based only on a prior atmosphere test. A. Depart with required safety equipment unavailable because conditions are calm.
C. Wash a small spill overboard rather than initiating the response process. B. Continue the transfer until the planned quantity is complete.
D. Continue the transfer until the planned quantity is complete. C. Enter an enclosed space based only on a prior atmosphere test.
Correct Answer: A D. Review source/quantity of release, containment condition, notifications and
Explanation: The selected action best supports safe, compliant, and technically sound response equipment and compare the findings with the applicable criteria.
performance because it addresses emergency procedures using observable evidence rather Correct Answer: D
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
45. An electrical protective device trips repeatedly. Which troubleshooting conditions before the cause is understood.
approach is most appropriate for Fire prevention, firefighting, damage control
and abandonment procedures? 54. An engineering watch observes an abnormal temperature or pressure. Under
A. Disable an alarm that is interrupting operations. these conditions, when should the issue involving MARPOL principles be escalated?
B. Reset a protective trip repeatedly without finding the cause. A. Depart with required safety equipment inoperative because the voyage is short.
C. Increase machinery load to see whether the abnormal indication clears. B. Correct a required safety-equipment deficiency before sailing when the vessel
D. Protect the plant, verify the indication and diagnose the affected system before cannot legally or safely depart.
resetting or increasing load. C. Discharge a small contaminant amount rather than initiating the response procedure.
Correct Answer: D D. Make an unverified ballast change solely to improve trim.
Explanation: A defensible professional decision should be based on current evidence and Correct Answer: B
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.
3
