Engine General (Supplementary) USCG Question #549 (Set 9)

A high reading is only indicated at the salinity cells labeled "W" and "6" shown in the illustration. This would be the probable result of __________. GS-0053

USCG Exam Illustration GS-0053
USCG Examination Diagram: Illustration GS-0053
Official USCG Answer & Rule Citation

Correct Answer: Option C — a faulty cell at location "6" and a tube leak in item "I"

Salinity cells monitor distillate purity. A high reading at multiple points indicates a systemic failure. A tube leak in the condenser (item I) allows raw seawater to contaminate the distillate, while a faulty cell at location 6 provides an erroneous local reading, confirming a dual-fault scenario in the system.

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