I learned the hard way that the warps which got me round the Solent for ten years were not the right warps for a French summer. The first time I took a finger berth in La Rochelle I had two lines that were too short, one that was the wrong diameter for the cleats, and nothing remotely long enough for the moment, three weeks later, when I needed a shore line on a Mediterranean quay. So before you cross, it is worth thinking properly about what you carry.
How many lines, and how long
The honest answer is more than you think. For a boat of 10 to 12 metres I now carry six working warps plus two spares, and I have used all eight in a single season.
The rule of thumb that has never let me down: each bow and stern line should be at least two thirds of your boat length, and your springs should be roughly the full length of the boat. On a 11 metre yacht that means bow and stern lines around 8 metres and springs around 11 metres. That is for a normal pontoon berth. The moment you go further south the numbers change, and I will come to that.
Diameter matters as much as length. Marina cleats and the rope itself need to match. The widely quoted guide is 8mm of warp diameter for every 3 metres of boat length, so a 9 metre boat wants roughly 14mm, a 12 metre boat 16mm. Going thicker than your cleats can take is a classic mistake: the line will not sit properly and you will not get a clean turn under load.
Three strand nylon, and why it still wins
There is a lot of fancy rope on chandlery shelves now, but for mooring warps I keep coming back to three strand nylon. It stretches, which is exactly what you want when a wake rolls through a marina at midnight or the mistral starts gusting down the pontoon. Braided polyester looks tidier and chafes less, but it is stiff and shock loads the cleats.
UK chandlers like Gael Force list multiplait nylon warp around 5.45 pounds per metre in 2025, and a custom spliced three strand warp from a specialist such as Jimmy Green is in a similar bracket once you add an eye splice. Buying made up is worth it for the bow and stern lines, where a soft eye dropped over a pontoon cleat saves a lot of faffing. For springs I prefer plain ends so I can adjust the length and take them back to my own cleats.
Budget roughly 150 to 250 euros to kit out a mid size yacht with a full set of new warps. It is not glamorous spending, but it is cheaper than the fibreglass repair you get when a cheap line parts in a blow.
The thing nobody warns you about: lazy lines
North of the Mediterranean, French marinas are mostly finger pontoons and you moor much as you would in England. Cross into the Med and the game changes. From roughly Port-Vendres round to Menton, the standard is stern to (or bow to) with a lazy line: you back onto the quay, pick up a slimy line off the seabed that runs to a fixed mooring forward, and walk it back to your bow.
This caught me out completely the first time at Saint-Tropez. You need long stern lines to reach the quay cleats with the boat sitting off, and you need a way to handle a wet, weed covered lazy line without losing it or your temper. A boat hook with a good shape and a pair of gloves you do not mind ruining are not optional. If you are new to this, it is worth pairing the right warps with proper fenders and fender boards for Med mooring before you arrive, because there is a definite technique to picking up a mooring with lazy lines and rushing it in front of a full quay is no fun.
For Med berthing I add two extra long warps, 12 to 15 metres, kept separate so they are clean and ready. They double as shore lines when you anchor stern to a rock in a quiet calanque.
Snubbers, chafe and the small stuff
A line is only as strong as the point where it rubs. Every pontoon cleat, fairlead and quay edge is a chafe point, and a French granite quay in Brittany will saw through nylon faster than you would believe. I carry split lengths of garden hose and a few proper leather chafe sleeves. They cost almost nothing and they save warps.
In an exposed berth, a rubber snubber or a length of nylon led as a shock absorber takes the snatch out of the system. The Atlantic ports get a real surge in a westerly swell, and I have lain awake in Les Sables d'Olonne listening to other boats' lines groan because they had no give in them.
There is also a French quirk worth knowing about cleat sizes. Visitor berths in older municipal harbours often have small or worn cleats, and on a stone quay you may find a ring or a bollard rather than a cleat at all. That is another reason to carry warps with a mix of soft eyes and plain ends: a soft eye threads through a ring and back to itself, while a plain end takes a round turn and two half hitches on a bollard. I keep one warp permanently rigged with a large eye for exactly this, because the moment you need it you do not want to be tying a bowline in the dark with a swell running.
Two more things I would not cross without:
- A long shore line of floating polypropylene, 20 metres or more, for the days you end up alongside a high wall or rafting in a fishing harbour with no obvious cleats.
- Decent fenders and at least one fender board. Many older French harbour walls have pilings or rough stone that will chew ordinary fenders, and a board spreads the load.
Matching your kit to where you cruise
If your season is Channel hopping and Brittany, your priority is strong springs, good chafe gear and the ability to dry out cleanly against a wall, because tidal harbours in the north routinely dry. Tides up there are large, so your lines need slack management you would never think about in the Med. Brush up on the basics with an Atlantic tides crash course before you commit to a drying berth.
If you are heading for the Riviera, prioritise length and a clean Med mooring kit, and accept that you will spend more nights stern to a quay than alongside a pontoon. The cote d'Azur marina charges are eye watering in August, so many of us mix marina nights with anchoring, and that long shore line earns its keep both ways.
For the canals it is different again. You want shorter, fatter lines you can drop over a bollard from a moving boat, plus a couple of stakes for the towpath, which is the boat hooks and warps lock kit for canals rather than your seagoing warps, and I would not muddle the two.
What I would buy first
If money is tight, spend it in this order: two made up bow and stern lines of the right diameter, two springs, a long floating shore line, and chafe protection. Add the long Med warps before you cross the Gulf of Lion, not after. Get the diameter right for your cleats, buy nylon, and carry more than you think you need. In four seasons of cruising France the warps have been the cheapest part of the boat and, on two genuinely bad nights, the part I was most grateful for.
