The emergency frequency for VHF radio is Channel 16, which operates at 156.800 MHz. This frequency is designated specifically for distress communications and is monitored by both maritime and aerial authorities. It allows vessels in distress to send out urgent messages and receive assistance.
Channel 16 serves multiple functions: it is used for sending out distress calls, hailing other vessels, and establishing communication to coordinate rescue operations. It plays a crucial role in maritime safety and is universally recognized across international waters.
While other channels mentioned, such as Channel 9 and Channel 22, are also used in marine communication, they do not serve the same critical emergency function as Channel 16. Each of those channels has specific uses, but none are officially designated as the global emergency frequency for maritime distress situations.