I once carried a set of out-of-date parachute rockets across the Channel because I could not find anywhere in my home port that would take the old ones, and I did not want to cross with no flares at all. That is the trap most cruisers fall into. Flares are easy to buy, legally awkward to throw away, and surrounded by rules that differ between the UK and France. If you are taking a foreign-flagged boat to French waters, sort this out before you leave, not when a customs officer is reading the expiry stamp.
What counts as a flare, and what each one does
Three pyrotechnic distress signals are internationally recognised, and you will meet all three in French chandlers.
The red parachute rocket is the long-range night signal. Fired correctly it climbs to roughly 300 metres, ignites, and drifts down under a small parachute for about 40 seconds of brilliant red light. In clear conditions one has been seen as far as 28 nautical miles away. This is your "I am over the horizon, come and find me" signal.
The red hand flare is a short-range signal for day or night, used when you can already see a vessel, an aircraft or land. It burns for about a minute and is visible a few miles off. Hold it downwind, over the side, at arm's length, because it drips burning material.
The orange smoke signal is daylight only. The buoyant canister is opened and thrown into the water downwind of the boat, where it produces dense orange smoke for around 3 minutes. It is the signal a search aircraft or helicopter picks up most easily in daylight.
How many flares France expects, by zone
France sets pyrotechnic requirements through Division 240, the safety-equipment regulation it applies to pleasure craft under 24 metres. The number you must carry rises with your distance from a safe shelter, the same tiered logic that governs all your kit. I lay out the full ladder in the Division 240 guide for visiting boats, but for pyrotechnics the shape is this.
Coastal navigation, in the 2 to 6 mile band, calls for three red hand flares. Step out to the semi-offshore band, 6 to 60 miles, and you add three parachute rockets on top. Go offshore, beyond 60 miles, and two floating orange smoke signals join the list. As with everything in Division 240, each tier includes the one below, so an offshore boat carries hand flares, rockets and smoke together.
A practical note for British boats: the RYA position is that France's legal power to impose Division 240 on a foreign-flagged vessel is not entirely clear, a tangle I cover in whether French rules apply to foreign boats. But flares are exactly the item where you carry the French quantities regardless, because nobody wants to be 9 miles out with two hand flares and a dead engine.
Expiry: the date that gets you stopped
Marine pyrotechnics carry a shelf life of three to four years from manufacture, stamped on each unit. After that date they are legally expired and, in practice, unreliable: a rocket that fails to launch is worse than useless. French inspectors read these stamps. Turning up with flares a year past date is a needless way to fail an otherwise clean check, and it leaves you genuinely unprotected.
Buy your replacements with the longest available life. A flare bought in May with a four-year stamp covers you through roughly four seasons; one with eighteen months left on the shelf is poor value and a near-term disposal problem.
Disposing of old flares in France
This is where French practice helps the visiting sailor more than the UK system does. In the UK, HM Coastguard stopped accepting flares some years ago, and you now have to hunt down a registered disposal point, which is the snag that left me carrying expired rockets across the Channel in the first place.
France took a different route. Since 1 January 2022, points of sale for distress pyrotechnics, the chandlers and shops that sell hand flares, smoke signals and parachute rockets, must accept used, expired or unwanted units back, and they cannot make you buy new ones as a condition. So you can walk into a French chandler, hand over your dead flares, and walk out. That single rule makes France one of the easier countries to refresh your stock in.
What you must never do, in France or anywhere, is the obvious shortcut. It is illegal to dump flares at sea, illegal to bury or bin them ashore, and illegal to let one off other than in a genuine emergency. The temptation to "use up" old rockets on a quiet evening is real and it is an offence; a coastguard who sees a red rocket launches a response.
Stowage and using them when it counts
Where you keep flares matters as much as having them. The container should be watertight, brightly marked, and somewhere any crew member can reach in seconds, ideally near the companionway rather than in a cockpit locker you have to empty first. I have seen a perfectly equipped boat unable to find its flares in the dark because they lived under the spare warps. Brief your crew on where the box is and how each type works before you sail, not when the engine has died on a lee shore.
Technique is its own small discipline. A parachute rocket is fired roughly vertically, or angled slightly downwind in strong wind so the flare drifts over open water rather than back onto the boat. A hand flare is held outboard, downwind, at arm's length and slightly down, because it sheds burning slag. Smoke goes in the water, downwind, where it will not blow back into the cockpit. Read the printed instructions on each unit when you buy them, because the firing action differs between makes and you do not want to be learning it under stress.
Should you go electronic instead?
A growing number of cruisers carry an electronic LED distress light to supplement, or partly replace, traditional pyrotechnics. These never expire in the pyrotechnic sense, produce no fire risk, and can run for hours on a single set of batteries. They are excellent backup. The honest caveat is that they do not yet satisfy every flag state's or every inspector's idea of a "distress signal", and France's Division 240 categories are written around traditional pyrotechnics. Treat the electronic light as an addition, not a clean swap, until the regulation explicitly recognises it for your category.
It is worth remembering what flares are actually for in a world of DSC and EPIRBs. A digital distress alert tells the coastguard your identity and position; a parachute rocket tells the lifeboat or helicopter that has come looking exactly where you are in the final mile, when they are scanning a heaving grey sea for a small white hull. Pyrotechnics are the close-range "here, here, over here" that electronics still struggle to replace. That is why I would not cross a busy shipping lane relying on the radio alone, however good the set, a point I make again in the VHF licence and MMSI guide.
A simple flare plan for a French season
Work out the furthest you will be from a shelter on your planned passages and pick the matching Division 240 category. Buy the hand flares, rockets and smoke that category needs, choosing the longest expiry dates on the shelf. Stow them in a dry, accessible, watertight container that anyone aboard can find in the dark, not buried under the spare anchor chain. Note the earliest expiry date in your ship's log so a check at the start of next season takes thirty seconds.
When they expire, do not carry them home like I did. Hand them in at any French chandler that sells the same items, free of charge, and buy fresh. And keep the rest of your safety kit to the same standard: the lifejacket and harness rules and the VHF licence and MMSI requirements are the two other things a French officer is most likely to ask about in the same breath as your flares.
Sources: Division 240 (Ministere de la Mer / mer.gouv.fr); RYA distress flares guidance (rya.org.uk); French pyrotechnic take-back rule effective 1 January 2022 (nootica.fr).
