Under what circumstances may a coast station using telephony transmit a general call to a group of vessels?

• A. When announcing or preceding the transmission of Distress, Urgency, Safety or other important messages.
• B. When replying to a distress call
• C. When broadcasting a weather forecast
• D. Any time the operator chooses

Answer: (C)

General calls to a group of vessels are used when a coast station needs to broadcast information to many ships in a region without initiating individual two-way contacts. A weather forecast fits this purpose well because it’s routine information intended for all vessels in the area and does not require replies from each vessel.

Distress, Urgency, or Safety transmissions are handled with priority procedures and are typically directed to specific stations or vessels, not as a broad group call. Responding to a distress call is a direct exchange with the caller, not a broadcast to many ships. And general calls aren’t something operators can use at will; they’re limited to appropriate types of messages and circumstances.