When should you switch to a working frequency?

Switching to a working frequency after establishing contact on a calling frequency is standard practice in marine communication. The purpose of a calling frequency is to initiate communication and establish a connection with another station. Once contact has been successfully made, it is efficient to switch to a working frequency for the remainder of the conversation. This practice reduces congestion on the calling frequency, allowing other users to make calls, while providing a dedicated space for ongoing dialogues.

Using the designated calling frequency only for establishing contact ensures that the communications flow smoothly and efficiently within the marine radio system. This approach also adheres to maritime communication protocols, which prioritize clear and effective communication among vessels and stations. The other options suggest practices that do not align with efficient communication protocols.