Which type of transmission does not require the operator to hold a license at all times under the regulations?

Distress communications are critical in maritime safety and are given special consideration under regulations because they are conducted in urgent situations. When a vessel is in distress, the necessity for swift and clear communication takes precedence over licensing requirements. This means that anyone aboard a vessel can make a distress call, regardless of their licensing status. The priority is to ensure that help can be summoned immediately to save lives and property at sea.

In contrast, routine communications, commercial communications, and emergency broadcasts often require licensed operators to ensure that the messages are transmitted effectively and in compliance with regulatory standards. The requirement for a license helps maintain operational control and safety in these situations, as they do not carry the immediate life-threatening implications that distress communications do. Thus, the specific regulations surrounding distress communications facilitate rapid response without the barrier of licensing, emphasizing the paramount importance of safety in critical scenarios.