An urgent call is intended to convey information that requires immediate attention and may indicate a situation that could develop into a more serious problem. Therefore, the type of information appropriate for an urgent call would involve situations that necessitate prompt response or caution, without being in immediate danger.
By indicating a situation requiring attention that is urgent but not necessarily a full-blown distress, this choice ensures that the recipients of the call are aware that while the situation does not warrant a distress signal yet, it still needs to be addressed promptly to prevent escalation. For instance, this could include mechanical issues onboard that, if left unaddressed, could lead to more serious complications.
In contrast, while issues related to general safety or fire hazards are important, they might not always fit the criteria for an urgent call unless they represent an immediate threat. A distress situation, on the other hand, is more critical—it represents an emergency that requires immediate assistance and involves a risk to life or a vessel. Thus, the most fitting response for the nature of an urgent call is one that signals potential issues that should not be ignored but do not yet meet the criteria of a crisis.