What publication/s should a GMDSS Operator consult regarding the proper set-up and operation of vessel equipment?

Correct Answer: Option B — The manufacturer's instruction manuals.

Manufacturer instruction manuals provide the necessary technical guidance for the physical setup, configuration, and daily operation of specific GMDSS hardware. While regulations mandate the presence of equipment, the operator must rely on these manuals to correctly execute functions like DSC testing, message retrieval, and routine equipment management.