🔍 Key Concepts

• Authority structure aboard ship: master of the vessel vs. radio officer/operator • Regulatory idea of who is ultimately responsible versus who performs the technical work • How international and national Radio Regulations assign responsibility for radio service and safety communications

💭 Think About

• Think about who is legally responsible for everything that happens on board, including communications, not just who has the highest radio license. • Consider whether "ultimate control" means day‑to‑day operation of the equipment or final authority over how and when it is used. • Look at which answer choices limit authority to a specific license type versus the person in command of the vessel.

✅ Before You Answer

• Identify who is, by law and custom, responsible for the safety and regulatory compliance of the entire vessel. • Distinguish between technical qualification (radio license) and command authority (overall ship’s command). • Check which option could delegate radio tasks but still retain final say over radio use and compliance.