If your vessel is damaged but you don't require immediate assistance, what phrase do you use?

When your vessel is damaged and you do not require immediate assistance, the appropriate phrase to use is "PAN PAN PAN." This term indicates a situation that is urgent but does not pose immediate danger to life or the vessel. It conveys that there is a problem that may require help but does not classify as a life-threatening emergency.

"PAN PAN" alerts other vessels and stations that you are in a situation that needs attention but allows them to prioritize their responses according to the severity of the emergencies they might be dealing with. It is the standard protocol for relaying non-life-threatening emergencies.

In contrast, "MAYDAY" signifies a life-threatening emergency where immediate assistance is vital. "SECURITY" is used for sending safety messages or navigational warnings, while "CALLING ALL STATIONS" is a general call that is less formal and not specific to distress or urgency levels. Hence, "PAN PAN PAN" is the most suitable choice in this situation.