A Distress Priority DSC call can specify what information?

The correct answer indicates that a Distress Priority DSC call can specify either the nature of distress or an alternate frequency, but not both within a single DSC distress call. This is aligned with the prescribed protocols for maritime distress communication, aimed at simplifying and prioritizing the transmission of critical information. When issuing a distress alert via DSC, the call prioritizes urgency and clarity to ensure that receiving stations can respond promptly, focusing on one critical piece of information at a time.

The format of the distress call is standardized, facilitating immediate recognition and response from other vessels or shore stations. If both the nature of the distress and an alternative frequency were included in the same call, it could lead to confusion, potentially delaying the response that the distressed vessel requires. Thus, specifying only one of these critical elements ensures better comprehension and timelier assistance.

In the context of the other answer choices, the first option describes a variety of details that could be communicated in a distress call but does not align with the protocols limiting the simultaneous transmission of specific types of information. The third option incorrectly suggests that a DSC distress call could allow only TELEX follow-on communications, which neglects the use of voice channels, and the same goes for the fourth choice that implies only one communication mode could be