How often must a compulsory vessel's GMDSS radio station be inspected?

Correct Answer: Option B — Annually, by the FCC or designated authority.

Under FCC regulations and international SOLAS requirements, compulsory vessels must undergo a GMDSS radio station inspection annually. This inspection is performed by the FCC or a designated authority to ensure that all distress, safety, and communication equipment remains fully operational and compliant with international maritime safety standards.