When is it appropriate to use a "Pan-Pan" call instead of a distress call?

A "Pan-Pan" call is appropriate in situations that require attention but do not pose an immediate danger to life or the vessel. It indicates an urgent safety message that needs to be communicated, highlighting that the situation is serious but not critical. For example, if a vessel experiences mechanical issues that could lead to further complications, making a "Pan-Pan" call alerts other vessels or authorities that assistance might be needed without indicating that there is an emergency situation.

In contrast, reporting bad weather typically would not require a "Pan-Pan"; instead, it may be communicated through other channels or as part of routine navigation updates. While sharing one’s location can be part of a "Pan-Pan" call if it’s related to an urgent situation, simply needing to share this information alone does not justify a "Pan-Pan." Lastly, if there is truly no hope for assistance, that scenario would require a distress call, which conveys a life-threatening situation requiring immediate rescue efforts.