French Maritime Law for Sailors: What to Know

France is not Croatia. It is not Greece. The Affaires Maritimes conducts random checks throughout the season, and they have teeth. Fines start at €1,500 for missing paperwork and climb steeply from there. The Posidonia anchoring law introduced in 2022 carries theoretical penalties of €150,000. None of this is meant to scare you off. It's meant to stop you ruining your holiday on day two because nobody told you the rules.

If you're sailing the French Riviera or heading to Corsica, read this before you leave the dock.

Licences: What France Actually Requires

You need a licence, and it will be checked. The question is which one counts.

France recognises the International Certificate of Competence (ICC) issued by countries that signed UNECE Resolution 40, including the UK, Ireland, the Netherlands, Belgium, and most EU states. If your ICC came from one of those countries, you're legal. If you hold only an RYA Day Skipper certificate without the ICC endorsement, you are not covered under French law. The safest combination is Day Skipper plus ICC, and most charter companies will accept that without question.

France's own system runs on two licences. The Permis Côtier covers motorboats and sailing vessels with engines within 6 NM of a designated shelter. The Permis Hauturier extends that offshore. For French residents, these are mandatory. Non-resident visitors on charter should carry an ICC or equivalent national licence from their home country.

The APER (Attestation de Formation à la Conduite des Bateaux de Plaisance) is a newer framework standardising French boating education. It applies primarily to residents and training schools within France. As a visiting charterer, you won't need the APER specifically, though your charter company may reference it during briefing.

What matters on the water: the Affaires Maritimes pull alongside yachts in popular anchorages. The Îles de Lérins off Cannes, the calanques near Marseille, Porquerolles. They ask for papers. No licence means a €1,500 fine, issued on the spot. They also check safety equipment, which we'll get to shortly.

Posidonia Regulations: The One That Can Ruin Your Trip

Posidonia oceanica is a marine seagrass endemic to the Mediterranean. Not seaweed. A flowering plant that produces oxygen, stabilises the seabed, and provides habitat for over 100 species of fish and invertebrates. One square metre of healthy Posidonia produces 14 litres of oxygen per day. France takes its protection seriously, and the paperwork proves it.

The Loi 3DS, passed in February 2022 (Law No. 2022-217, Article 233), made anchoring on Posidonia meadows illegal for vessels over 24 metres. A subsequent decree extended restrictions to smaller vessels in designated zones, particularly around Corsica and the Var coast. Enforcement has expanded every season since.

The maximum fine is €150,000. In practice, first-time offenders on charter yachts typically receive €1,500, still enough to spoil a week. Repeat offenders or those who damage large areas face escalating penalties. The Gendarmerie Maritime and Affaires Maritimes patrol high-season hotspots like the Baie de Pampelonne near Saint-Tropez with drones.

How to identify Posidonia

From the surface, Posidonia beds appear as dark brown or greenish-brown patches on the seabed. Clear white sand generally means you're fine. The transition zones are the tricky part. If you're in 3 to 10 metres of water and see any dark patches below, move.

The Donia app (free, iOS and Android) maps Posidonia meadows across the French coast using satellite data. Resolution varies, so it's not infallible, but it's the best tool available and used by charter companies in their briefings. Download it before departure and cross-reference with your chartplotter depth readings.

Your charter base briefing should cover local Posidonia zones. If it doesn't, ask. If they seem vague, that tells you something about the operation. Good bases at Port Vauban or Toulon will spend 15 minutes on this alone.

Zones de Mouillage: Organised Anchorages

France has invested heavily in ZMEL (Zones de Mouillage et d'Équipements Légers). These are organised mooring fields with permanent buoys anchored in sand patches between Posidonia beds. Your yacht sits on a buoy, your anchor stays on deck, and the seabed stays intact.

ZMEL buoys cost between €20 and €40 per night depending on location and vessel size. The most popular fields sit off the Îles de Lérins opposite Cannes, around Porquerolles, and in several bays along the Var coast. In high season, mid-July through August, these fill by early afternoon. Arrive before 14:00 or plan to anchor elsewhere in a permitted zone.

Picking up a ZMEL buoy is straightforward. Most use a pick-up line with a floating pennant. Approach upwind, hook it with a boat hook, and secure to your bow cleat. No stern line needed. The buoys are rated by vessel size, so check the colour coding, which varies by commune.

Not every bay has ZMEL buoys. In unorganised anchorages you can still drop anchor, but only on sand. If the Donia app shows Posidonia, or you can see dark patches below, find another spot.

Speed Limits and the Bande des 300 Mètres

French maritime law establishes a 300-metre coastal strip, the bande des 300 mètres, as a priority zone for swimmers. Within this band, the speed limit is 5 knots. No exceptions for sailboats under engine. No exceptions for tenders. Jet skis must cross the band perpendicular to shore at reduced speed.

Inside harbours, the limit drops to 3 knots, sometimes less. Port Vauban in Antibes, Port Canto in Cannes, and Port Hercule in Monaco all enforce 3-knot limits with patrol boats. Generating excessive wash can result in a fine even at legal speeds.

Outside the 300-metre band there are no general speed limits for recreational vessels. Local préfectures may impose temporary restrictions during events, the Cannes Film Festival, the Cannes Yachting Festival, the Monaco Yacht Show, or in nature reserves.

VHF and Safety Equipment Requirements

Any vessel over 6 metres in French waters must carry a VHF radio. DSC-equipped sets are strongly recommended and increasingly expected. Monitor Channel 16 at all times while underway. That's a legal requirement, not a suggestion.

The mandatory safety equipment list for coastal navigation (within 6 NM) includes:

• CE-approved lifejackets, one per person aboard, not one per berth
• In-date distress flares: 3 hand flares and 3 parachute rockets for offshore; coastal requires at least 3 hand flares
• Fire extinguisher, maintained and in date
• Sound signal device (horn or whistle)
• Heliographic mirror
• Waterproof flashlight with spare batteries
• Navigation lights in working order
• Bilge pump or bailer

Charter companies are responsible for equipping their boats correctly, but you are responsible for checking. The handover checklist should verify every item. Affaires Maritimes inspections include safety equipment, and the skipper, not the charter company, receives the fine for non-compliance.

In an emergency, call CROSS (Centre Régional Opérationnel de Surveillance et de Sauvetage) on VHF Channel 16 or dial 196 from a mobile phone. CROSS Méditerranée, based in La Garde near Toulon, covers the entire French Mediterranean coast including Corsica.

Customs, Borders, and Navigation Notes

A few specifics that catch people out:

Monaco is Schengen but not EU. You won't show a passport entering by yacht, but customs rules differ if you're carrying goods for sale or large quantities of alcohol. In practice, sailing into Port Hercule or anchoring off Monaco raises no issues for recreational vessels.

Corsica is fully French territory. Same laws, same enforcement, same Posidonia rules. The Réserve Naturelle de Scandola on Corsica's west coast carries additional restrictions: no anchoring, no fishing, strict speed limits, and a minimum distance from the coast. Infringements in Scandola carry separate environmental penalties.

Italy is both EU and Schengen. Crossing from France to Italy, say Menton to Ventimiglia or continuing east from Monaco, requires no formalities for EU and Schengen nationals. Non-Schengen passport holders should carry documentation for border crossings.

Navigation lights must be displayed from sunset to sunrise and during restricted visibility. This is enforced. Running without lights at night near the Riviera, where traffic includes ferries, commercial vessels, and fast patrol boats, is genuinely dangerous and will draw the Gendarmerie Maritime.

How France Compares to Other Sailing Destinations

The question everyone asks: is France really that much stricter? Yes. Here's how it stacks up.

Croatia sits in the middle. Rules exist and bases enforce them, but sea patrols are less frequent. Greece has detailed laws on the books but enforcement is inconsistent outside major ports. The BVI operates on a trust system where a sailing CV is often sufficient and patrols focus on drug enforcement rather than recreational compliance.

Practical Steps Before You Cast Off

Seven things to do before leaving your charter base in France:

• Carry your ICC or national licence. The original, not a photocopy. If you need one, get it sorted weeks before departure.
• Download the Donia app and familiarise yourself with Posidonia zones along your planned route.
• Verify safety equipment at handover. Count lifejackets, check flare dates, test the VHF. Use a proper handover checklist.
• Know the ZMEL buoy locations. Your charter base should provide a chart, but also check the Donia app and local préfecture maritime notices.
• Programme CROSS into your phone. 196 for emergencies. Save it before you leave port.
• Anchor only on sand. If you can't see the bottom and the chart shows 8 to 12 metres with seagrass symbols, don't drop.
• Budget for higher marina and buoy costs. France runs 30 to 50 per cent more expensive than Croatia or Greece for harbour fees.

French maritime law is strict because the coast is ecologically sensitive and commercially valuable. The rules aren't arbitrary. The Posidonia meadows off the Var coast and Corsica are among the healthiest remaining in the Mediterranean, partly because France actually enforces their protection. That's why the water between Antibes and Porquerolles is still clear enough to see the bottom at 15 metres.

Know the rules, carry the papers, download the app. The Donia app alone has kept more than a few charterers out of very expensive trouble off Pampelonne.