The first time I took on diesel in France I got it wrong in three different ways before the bowline was even ashore. I came in too fast, on the wrong side, with no idea who I was supposed to call. The man on the fuel pontoon waved me off and pointed at the far end where the hose actually reached. Nobody died, nothing was scratched, but my heart was going like a drum. None of it was hard. I just had not been told the order things happen in.
So here is the order, written down, for the first time you do this.
Before you slip the lines
Work out which side your filler is on. Sounds obvious, but in the panic of a first fuel berth people forget, and end up presenting the wrong rail to a hose that does not reach. Walk the deck and find your diesel cap, then decide whether you are coming alongside port or starboard side to.
Then have your fenders and two lines ready before you are anywhere near the pontoon. A bow line and a stern line are enough for a quick fuel stop. You are not staying the night, so you do not need springs unless it is blowing hard.
Check your tank capacity and have a rough number in your head. If you are not sure, you will be. Most cruising boats in the 9 to 11 metre range hold somewhere between 100 and 200 litres. Knowing yours means you can tell the attendant roughly what you want and you will not be caught out by the bill.
Calling ahead
Many fuel berths in France want you to call on VHF before you arrive, especially the bigger marina stations that share staff with the capitainerie. The working channel is usually painted on the breakwater or listed in your pilot, and it is often the same one the harbour office uses. If you are unsure which channel does what, my guide to VHF channels in France lays out marina, lock and traffic channels so you call the right desk.
A short call is all you need. Give the boat name, your length, and ask if the berth is free and which side to come alongside. If your French is shaky, keep it to a few set phrases; the VHF French phrases crib sheet has the exact words for asking a berth and confirming a side, and the staff at fuel berths hear English every day of the season.
If no one answers, that is normal too. Plenty of smaller stations are unmanned in the morning or run on set hours. Approach slowly, look for someone, and be ready to wait.
Coming alongside
Approach dead slow. A fuel berth is short and other boats may be queuing, so the last thing you want is to arrive with way on and nothing to stop you. Aim to stop the boat a metre off and let the wind or the last touch of throttle ease you in.
Get the upwind line ashore first. If it is blowing onto the pontoon, the boat will sit there happily once one line is on. If it is blowing off, you need to be quicker and the upwind line matters even more. Walk it, do not throw a heavy coil at the attendant and hope.
Once you are secured, kill the engine. Diesel fumes, a running engine and a fuel hose are a combination nobody wants.
The actual fuelling
French marina pumps work much like a petrol station, with a trigger nozzle and a metered display. The attendant usually hands you the hose, or runs it for you. Diesel is gazole or gasoil on the pump. Petrol is sans plomb (unleaded), in 95 or 98. Read it twice. Putting petrol in a diesel tank is an expensive afternoon and a very common holiday mistake.
Fill slowly at first. Diesel filler pipes burp and spit if you go in hard, and you do not want a slick of fuel down your topsides and into the harbour, which is both antisocial and, in many French ports, finable. Listen for the change in note as the tank nears full and ease off.
Know the price going in so the total is not a shock. Marina diesel in France is dearer than the road price because it carries full French VAT at 20 percent plus the energy duty and port charges. In 2025 to 2026, road diesel in France ran around 1.70 to 1.75 euros a litre, while diesel at a south of France fuel berth averaged closer to 2.50 euros a litre, and Saint-Tropez is famous for charging more again. On a 150 litre fill that price gap is real money. If you want the cheaper berths and the duty rules for visitors, my piece on where to bunker boat fuel in France is the one to read before you plan a long leg.
Diesel or petrol, and a word on bunkering habits
Almost every cruising sailboat in France runs a diesel engine, so gazole is what you want, but the moment to be careful is when you fill a separate petrol can for an outboard or a tender. The petrol pump (sans plomb 95 or 98) often sits right next to the diesel, and a tired skipper at the end of a long day grabs the wrong nozzle. The cure is simple: read the pump label out loud before you squeeze the trigger. If you ever do put the wrong fuel in, stop immediately, do not start the engine, and call a mechanic; running it circulates the mistake through the whole system.
Two other habits worth forming on your first fill. First, watch the meter, not the nozzle; French pumps display litres and total in real time, and keeping an eye on the running figure stops you blowing past the amount you meant to take. Second, if the wind is gusting onto your topsides, ask the attendant to hold the boat or take a second line, because a fuel berth is exactly where a careless touch leaves a scrape in full view of the marina.
Paying and leaving
Pay at the pump office or the capitainerie, by card almost everywhere now. Some smaller or unmanned stations use a card-operated automat where you tap first and fuel second, much like a French motorway pump, so have a chip-and-pin card that works abroad. Keep the receipt; if your boat is non-EU and you are tracking what you have paid against your temporary admission, that paperwork matters later.
Then leave promptly. The fuel berth is the busiest few square metres in the marina on an August morning, and a queue builds fast. Let go your downwind line first, then the upwind one, motor off slowly, and find your actual berth or head out.
If your next move is finding your night's spot, the way French ports allocate and charge for visitor berths is worth knowing in advance; I walk through it in how French marinas work for the visitor, and there is a full beginner's walkthrough of arrival in your first marina arrival in France.
The thing nobody tells you
Fuel berth nerves come almost entirely from not knowing the sequence. Once you have done it twice, it is the most boring part of the day: call, come alongside slow, one line on, engine off, fill slowly, pay, go. Write the steps on a card and tape it by the wheel for your first season. By August you will not need it, and you will be the one calmly waving the panicking newcomer to the end of the pontoon where the hose actually reaches.
One last habit worth forming early: top up before you need to, not when the gauge is on the stop. A boat with a third of a tank left has options. A boat running on fumes off a tidal coast in a rising wind has none. Fuelling is not the exciting part of cruising France, and that is exactly why you want it to be routine.
