The first time I nosed into the Calanque de Sormiou under sail, with the white limestone cliffs going up several hundred feet on either side and the water turning that impossible turquoise over the sand, I understood why people lose their heads over this coast. The stretch between Marseille and Cassis is one of the most dramatic in the whole Mediterranean: a 20 km wall of bone-white rock slashed by deep, narrow inlets, the calanques, each one a fjord in miniature. It is also, since 2012, a national park with rules that have tightened sharply, and if you arrive expecting to anchor wherever you like you will fall foul of them. So here is the honest version: what is genuinely spectacular, what is now forbidden, and how to enjoy it without a fine or a wrecked seagrass meadow.
A national park with teeth
The Parc national des Calanques is the only national park in Europe that is at once land, sea and peri-urban, on the doorstep of France's second city. Because it is so easy to reach, it gets hammered in summer, and the park authority has responded with a mooring strategy that has been rolling out in stages. The headline numbers you need to carry in your head:
- The speed limit inside the 300-metre coastal band is 5 knots. Hold to it; the park watches.
- You may not tie up to the white ecological mooring buoys, which mark protected seagrass and are not for visiting yachts to grab.
- Yellow buoys mark borders, either the 300-metre band or zones where anchoring and sometimes navigation are banned.
The strategy that came in from 2021 onward did two big things. It pushed large vessels over 24 metres further offshore, and it converted several of the most popular calanques from free anchoring to compulsory buoy zones, while banning anchoring outright in the two most fragile inlets.
Where you cannot anchor
Get this part right and the rest follows. There is now a total ban on anchoring in En-Vau and Port-Pin, the two emblematic eastern calanques near Cassis, full stop. They are stunning and you can still visit by tender, kayak or on foot, but you cannot drop a hook in them. Calanque de Sormiou and Calanque de Morgiou, on the Marseille side, have moved to compulsory mooring on buoys, with anchoring forbidden beyond the line of buoys that marks the no-anchor zone. The west of Pomegues, off the Frioul islands, is similarly buoy-only now.
The reason behind all of this is posidonia, the slow-growing Mediterranean seagrass that anchors tear up by the acre. France has got serious about protecting it across the whole coast, and the same rules that bite here apply in softer form up the Riviera; I have laid out the national picture in the piece on the posidonia anchoring ban in France, and the practical year-by-year detail in Cote d'Azur anchoring rules for 2026. Read at least one of them before you cruise this coast, because the fines are real and the enforcement is not casual.
Where you still can, and how
So where does that leave the cruising sailor who wants a swim and a night at anchor? The park's own logic concentrates free anchoring on sandy areas where there is no seagrass to damage: around the Frioul archipelago off Marseille, off Pointe Rouge, north of the Ile de Riou, and in the broad bays of Cassis and La Ciotat at the eastern end. Those are your reliable overnight options. Inside the buoy calanques you can still spend the day on a mooring if one is free, but plan to retreat to a sandy bay for the night.
My own rhythm on this coast: I base in or near Cassis, day-sail westward into the calanques to swim and explore on a daytime buoy or by tender, and come back to a sandy anchorage in the bay for the evening. Cassis itself has a tight, pretty old harbour that fills early, so I either book ahead or take the bay. The whole Marseille-to-Cassis run, with the practicalities of the Vieux-Port at the city end, is covered more fully in my guide to the calanques of Marseille and Cassis by boat and in the piece on Marseille's Vieux-Port and the Frioul islands, which is where most visitors start.
The wind problem
The Calanques look benign in a flat calm, but they sit at the eastern edge of mistral country, and the mistral is the thing that catches people out here. It is a cold, dry, often gale-force northwesterly that can arrive under a cloudless sky and turn a sheltered-looking inlet into a wind tunnel as it accelerates over the high ground and funnels down the calanque. The cliffs do not protect you; they channel and amplify the gusts. I have been pinned in Sormiou by a mistral that the morning forecast had downplayed, and getting out against it was no fun at all. Learn to read it: my piece on reading the mistral before it traps you is the single most useful thing I can point a Calanques first-timer towards. The short version is that you watch the pressure gradient over the Gulf of Lion a day or two out, and you do not get cornered in a narrow inlet with a rising barometer.
Underwater and ashore
If you dive or snorkel, this is some of the clearest, richest water on the French Med, with grouper coming back, octopus in the rocks and the famous Cosquer cave (now closed and underwater) somewhere along this very shore. The marine life here is the subject of its own piece on snorkelling the Calanques marine life, and it rewards an hour with a mask far more than most Riviera anchorages. Ashore, the calanques are laced with footpaths, but note that summer access on land is restricted during high fire-risk days, so a landing you planned may be closed.
The bases at each end
Your two natural bases are Marseille at the west end and Cassis at the east, and they could not be more different. Marseille's Vieux-Port puts you in the middle of a great Mediterranean city, with the Frioul islands a short hop offshore for an easy first night at anchor on sand; it is loud, lively and well-supplied, with every chandler and provision you could want. Cassis is the opposite, a small, pretty fishing harbour wedged under the cliffs of Cap Canaille, the highest sea cliff in France at over 390 metres. The Cassis harbour is tight and fills early in season, so book ahead or take the bay, but it is the more charming base and closer to the eastern calanques of En-Vau and Port-Pin. La Ciotat, just beyond Cassis, has a large modern marina and a famous shipyard, and makes a good third option with more chance of a berth.
Whichever end you start from, factor in that the calanques themselves have no facilities at all. There is no fuel, no water, no shop in any of the inlets, so you provision and bunker at the city or harbour end and treat the calanques as a day-cruising playground. Carry enough water for swimming and showers off the back of the boat, because you will want to, and bring shade, because the white limestone throws the heat back at you and there is no breeze in the lee of the cliffs on a still day.
The plan I would give a friend
Pick the shoulder season, May or September, partly for the lighter winds and partly because July and August bring both the crowds and the worst of the fire closures. Base at Cassis or La Ciotat. Day-sail the calanques, respecting the 5-knot limit and the buoy and no-anchor zones, swim off Port-Pin and En-Vau by tender without anchoring in them, and retreat each night to a sandy bay or a booked berth. Keep one eye permanently on the mistral. Do that and the Calanques give you the best of the Provence coast: water you can see your anchor through at five metres, cliffs that dwarf the boat, and a swim in a setting nowhere else in France can match.
