Pan-Pan and Mayday are not the same word for the same problem — they sit on different rungs of a three-level priority ladder. MAYDAY is for grave and imminent danger to a vessel or the people aboard it. PAN-PAN, spoken three times ("pahn-pahn"), is one level down: something is genuinely wrong, but the danger isn't immediate — a breakdown you're safe to sit with, an injury that needs advice rather than rescue, navigation equipment that's failed and left you unsure where you are. SÉCURITÉ, spoken three times ("say-cure-ee-tay"), sits a level below that again: not a call for help at all, just an important safety-of-navigation or weather message, usually from a coast station but sendable by any vessel. If a Pan-Pan situation turns grave and imminent, the move is to upgrade to Mayday and say so.
Every VHF call for help starts the same way in your head: something's wrong, so you reach for the radio. What's less obvious is which word to open with. Mayday gets taught first because it's the one call nobody can afford to hesitate over, but most real situations don't actually clear that bar — they're serious, maybe even worth interrupting your afternoon for, without being a life-and-vessel emergency in progress. That gap is exactly where PAN-PAN lives, and knowing it exists changes how you react: instead of choosing between overreacting and staying silent, there's a call built for precisely this middle ground. SÉCURITÉ, one rung further down, isn't even about your own emergency — it's the safety information that keeps everyone else's afternoon from turning into one. This guide covers when each word actually applies, what a Pan-Pan call sounds like, and the one moment worth remembering: when to trade Pan-Pan for Mayday.
Three Tiers, One Radio
Marine radio distress and safety traffic runs on three priority levels, not two. MAYDAY marks Distress, the top tier: grave and imminent danger to a vessel or the people on it. PAN-PAN marks Urgency, one level down — used, by definition, when there's no immediate danger and immediate assistance isn't required or fully justified. It still means something is genuinely wrong; it just means the danger hasn't crossed into grave-and-imminent territory. SÉCURITÉ marks Safety, one level down again — not a request for help at all, but an important navigational or weather message. The same situation can sit at different tiers depending on how much time you actually have: a boat drifting toward rocks might be Distress if it's going to strike them in twenty minutes, but Urgency if that's closer to four hours. Each tier opens with its own word, spoken three times — MAYDAY, PAN-PAN, or SÉCURITÉ — so whoever's listening knows immediately which kind of message is coming, before you've said anything else.
When Pan-Pan Is the Right Call
Three situations cover most of what Pan-Pan is actually for. First, a boat that's broken down, taking a controllable leak, or otherwise safe for now but drifting toward a hazard — a shoreline, a busy shipping channel — where the problem could still get worse before it gets better. Second, losing your navigational equipment: your GPS or chartplotter fails and you're genuinely not sure where you are, especially with a hazard somewhere nearby you can't yet pin down. Third, a non-life-threatening injury or illness aboard — something that needs a professional opinion, not a rescue. Training material for radio operators gives this last case its own name: a request for medical advice is a "Medico"; if someone actually needs to be taken off the boat, it's a "Medevac." None of these situations demand the word MAYDAY, and none of them deserve silence either — staying quiet just means nobody knows you might need a hand. Pan-Pan is the call built for exactly this stretch of ground.
What a Pan-Pan Call Sounds Like
A Pan-Pan call follows almost the same shape as a distress call — Module 9's own Mayday guide walks through that structure in detail — just with a different opening word and a different closing ask. Start with PAN-PAN spoken three times, then ALL STATIONS spoken three times, or a specific station's name if you're calling one directly. Say THIS IS, then your vessel's name and any call sign or MMSI you carry, the same identification a distress call opens with. Then give your position, what's actually wrong, and what you want — the real difference from a Mayday. A Mayday call asks for immediate assistance; a Pan-Pan states your own intended action or the kind of help you'd like, which might be nothing more than someone standing by. One more difference worth knowing before you ever need it: a Pan-Pan doesn't use a radio's red DSC distress button. That button is reserved for Distress. A Pan-Pan's DSC step, if your set has one, lives in a separate menu — the voice call on channel 16 is what actually carries the message.
Sécurité — A Safety Message, Not a Rescue Request
SÉCURITÉ isn't a call for help — it's information everyone nearby benefits from hearing. A coast station is the more typical sender: it announces on channel 16 the way any distress or urgency call does, then the actual message moves to a working channel, mirroring the same announce-then-switch habit that governs a routine hail. Common Sécurité subjects include a large or constrained vessel working through a narrow channel, an approaching storm, or a hazard adrift in the water — a container, a log, debris nobody else has spotted yet. But sending one isn't limited to coast authorities. Any vessel that spots a hazard can broadcast a Sécurité of its own, including yours. The call follows its own short shape: SÉCURITÉ spoken three times, ALL STATIONS or a named station three times, your identification, then the message itself — closing with OUT instead of OVER, since nobody's expected to answer. Worth listening for even when it isn't addressed to you: a Sécurité about weather or a hazard changes what your own afternoon should look like.
When to Upgrade to Mayday
A Pan-Pan situation can turn into a Mayday, and the moment that happens, the fix is simple: say so, and switch words. Urgency, by its own definition, only applies when there's no immediate danger requiring immediate assistance — the instant a situation crosses into grave and imminent, it no longer fits that definition, whatever word you opened with. Drifting that was harmless starts closing on rocks faster than expected; an injury that seemed stable turns serious. Key the mic, open with MAYDAY instead, and give the full distress call from the top. Calling Pan-Pan first wasn't wrong — it was the accurate call for the situation you were in at the time, and switching words a few minutes later just means the situation itself changed. What actually costs you is delay: watching a situation get worse while sticking with the word you already used, instead of naming it for what it's become.
None of this needs to be memorized word-for-word before it matters. What's worth doing now is understanding the shape of the ladder: MAYDAY for grave and imminent danger, PAN-PAN for something genuinely wrong that hasn't crossed that line, SÉCURITÉ for safety information that isn't about your own emergency at all. Once that ordering is clear, choosing the right word in the moment stops being a guess — it's just naming the situation you're actually in. SailStarter's Module 9 lessons walk through this alongside the rest of marine radio communication — channel 16 and hailing, the Mayday call itself, and now the calls that sit below it — so the ladder becomes something you'd actually reach for correctly, the one time it counts.