There is a moment, common to everyone who steps up to a larger boat, when the cruising map quietly shrinks. The harbour you loved at 11 metres turns you away at 17. The fuel berth is too short. The visitor pontoon you used to slip alongside is full of 9 metre boats and you cannot fit. Going big in France is wonderful, but you have to plan the coast differently.
I help owners deliver and place yachts in the 15 to 24 metre bracket, and the question I hear most is simple: where does she actually fit? The honest answer is that France is generous at the top end if you book ahead, and unforgiving if you turn up on spec in August. Here is how the big yacht france berths picture really looks.
The size brackets that change everything
French marinas band their pricing and availability by length, and the thresholds matter more than the raw metres. The breaks that bite are roughly 12, 15, 20 and 24 metres. Below 12 you have the run of almost every port. Above 24 metres you are in the superyacht category, which is a different conversation with different berths and concierge agents.
The awkward middle, 15 to 24 metres, is where this article lives. You are too big for the standard visitor pontoon and too small to command a dedicated megayacht quay. You need to know which ports have the depth, the length and the manoeuvring room, because plenty do not.
Beam and draft matter as much as length. A 17 metre performance cruiser drawing 2.8 metres is locked out of half the Atlantic coast at low water, and the shoal draft french atlantic coast realities work against you. On the Med, draft is rarely the issue but berth length and laid-mooring strength are.
The Mediterranean: capacity, but you pay and you book
The Cote d'Azur is built for big boats, which is the good news and the expensive news at once.
Port Vauban in Antibes is the obvious benchmark. It is one of the largest marinas in the Mediterranean with around 1,600 to 1,900 berths and the famous Quai des Milliardaires for the truly vast. For a 20 metre yacht in high season you should expect to pay well into three figures per night, often 150 to 300 euros and considerably more in peak August, before water and electricity. The antibes port vauban guide goes deeper on booking and approach.
Marseille, Toulon and the larger Var ports take big boats with less of the glamour premium. Across the prestige Riviera marinas the broader picture is grim for walk-ins: many run multi-year waiting lists for annual contracts, and the med berth waiting list situation is the single biggest constraint on keeping a large boat there permanently.
The practical Med rule for a 15 metre-plus boat is unromantic. Reserve every night in July and August. Use the book french marina berth online channels weeks ahead, because the visitor space that does exist for large yachts fills first and empties last.
Over on the Atlantic: more room, fewer crowds, watch the tide
Cross to the Atlantic and the picture relaxes. Berths are cheaper, the crowds are thinner, and the big-boat capacity is genuinely good in the right ports, but the tide writes the rules.
La Rochelle is the standout. The Port des Minimes is one of the largest marinas on the European Atlantic seaboard with around 3,500 to 5,000 berths, and it handles large yachts comfortably with deep water access. Annual contracts here run a fraction of Riviera money, often 1,500 to 4,000 euros for a mid-size boat, with large-yacht pricing scaling up but still well below the Med. The la rochelle visitor guide has the approach and berthing detail.
Les Sables d'Olonne, home of the Vendee Globe, is set up for serious size and serious boats; the marina sees IMOCA 60s and large cruisers all season. Further south, Royan and the Gironde give a deep-water gateway for big boats heading inland or south, covered in the gironde estuary to bordeaux notes.
The catch on the Atlantic is tidal. Many attractive harbours dry or have sill gates that open only a few hours either side of high water. A deep, heavy 18 metre boat cannot lie in a drying harbour, so your overnight choices narrow to the all-tide deep-water marinas. Plan the coast around those, not around the chocolate-box ports you saw in photos.
Manoeuvring room is the other Atlantic factor people forget. A big boat needs space to turn and to lie head to tide, and some of the older Atlantic basins were laid out for smaller craft. Call the capitainerie ahead on VHF channel 9, which most French marinas monitor, and ask specifically about the longest hammerhead or the visitor quay rather than a finger berth, because a 17 metre boat in a finger pontoon designed for 12 metres is a bad afternoon waiting to happen.
Brittany and the Channel: charming, often too small
I love Brittany, but I am candid with big-boat owners: much of it is sized for smaller craft. The granite-walled inner harbours that make the region magic are tight, shallow and tidal. A 16 metre boat can cruise the area, but you sleep in the larger marinas and visit the pretty ports by tender or for a few hours at high water.
Saint-Malo, Brest and Lorient have the room and the depth. The smaller jewels mostly do not. Read the south brittany cruising guide with a large boat in mind and you will see where the practical limits fall.
What big actually costs across a season
Length is only the headline. The hidden multipliers are what surprise new big-boat owners.
- Berthing scales faster than linearly. A boat twice as long can cost three times as much to berth because beam and prime-pontoon demand both rise.
- Haul-out and yard work jump at the travel-lift capacity breaks. Yards with a 50 tonne hoist are common; above that the choice thins and the day-rate climbs.
- Fuel is a real number on a big motor yacht. Where to fill up matters, and the boat fuel france where to bunker guide is worth bookmarking before a long coastal leg.
- Annual running costs on a 15 metre-plus boat in France routinely run to tens of thousands of euros once you total berth, insurance, maintenance and haul-out.
If you are weighing where to keep a large boat for the long term, the best regions base boat france comparison and the annual running costs boat france breakdown are the two pieces to read before you commit a berth deposit.
My short list for cruising large in France
If a client asked me tomorrow where to base a 15 to 20 metre boat in France, I would give them three answers depending on priorities. For glamour, social scene and short Med hops: Antibes or the wider Cote d'Azur, with the budget and the waiting list that implies. For value, space and easy big-boat berthing: La Rochelle and the Atlantic, accepting that you organise the coast around all-tide ports. For a stepping stone south or across Biscay: the Gironde and Royan as a deep-water launch pad.
The boat that opened up the whole coast at 11 metres has closed some of it at 18, and that is simply the deal. Cruise large in France with the bookings made and the deep-water ports mapped, and the country is still one of the best big-boat playgrounds in Europe. Turn up unannounced in August at 17 metres and you will spend the holiday circling the harbour. Plan it, and she fits.
