I have anchored a 38-foot sloop the length of France, from the kelp-strewn bays of north Finistere to the Posidonia meadows off Hyeres, and I have come to a blunt conclusion: there is no single best anchor for French holding ground, but there is a short list of anchors that will let you sleep, and a much longer list that will keep you awake. This is my attempt to save you a few bad nights.
The seabed changes every fifty miles
France gives you almost every bottom type a cruiser can meet, and that is the whole problem. The Atlantic and Channel coasts hand you clean sand in the bays, kelp and eelgrass over rock at the edges, and sticky estuary mud in the rivers. Swing down to the Mediterranean and you trade the kelp for Posidonia, the protected seagrass that no anchor sets in cleanly and that you are increasingly forbidden from dropping on at all.
An anchor that is brilliant in one of these is mediocre in another. The old plough, the CQR, drags through soft mud and skates over weed. The Bruce sets fast in sand but its blunt point struggles in a heavy weed mat. That is why a modern boat carries a general-purpose hook chosen to be good-enough everywhere rather than perfect somewhere.
If you want the regional detail behind these bottoms, my notes on anchoring in Brittany cover reading sand against kelp, and the Posidonia anchoring ban in France explains why the Med half of your cruise needs a different mindset entirely.
What works: the new-generation scoop anchors
The anchors I trust now are the concave scoop designs that arrived in the last twenty years: the Rocna, the Spade, the Vulcan, the Mantus and their relatives. They share a sharp toe that bites the bottom, a roll bar or weighted tip that turns them the right way up, and a deep concave blade that buries itself and holds.
In French sand they set almost instantly. In mud they bury deep. Over light weed they have the point to punch through where a plough simply slides. None of them sets reliably through thick kelp or mature Posidonia, but nothing does, so that is not a fair test.
Rocna publish their sizing against a realistic worst case: 50 knots of wind, a moderate-holding seabed and adequate scope. Their range runs in 14 sizes from 4 kg up to 275 kg, which tells you they expect you to size up rather than down. For my 38-footer at around 8 tonnes loaded, that lands me on a 20 to 25 kg anchor. The galvanised Spade in steel sits in a similar band; the aluminium A-series version weighs far less for the same hold, which matters on a light bow, and the UK aluminium range runs from roughly 545 to 2,780 pounds depending on size.
Sizing: go one up, always
Manufacturers' charts are a starting point, not the answer. The single most useful habit I have is to read the chart, find my boat, then take the next size up. The penalty for an oversized anchor is a few extra kilos on the bow. The penalty for an undersized one is a 3am evacuation.
Two rules I follow:
- Size against displacement, not just length. A heavy long-keel cruiser needs more anchor than a light modern boat of the same length. Use your fully loaded weight, with the water and fuel tanks full and the lockers stuffed for a season.
- Match the anchor to the worst night, not the average one. France in summer is mostly benign, but the mistral can put 40 knots through a Provence anchorage with no warning, and an Atlantic front will do the same on the west coast.
A 20 kg modern scoop anchor on a boat that the chart says needs 15 kg costs you nothing in calm weather and everything in a blow. I have never regretted the extra metal.
The anchor is only half the system
A good anchor on a bad rode is still a bad night. The holding power you actually get depends on scope, on chain weight, and on a snubber that takes the shock out of the chain so the anchor is not jerked free.
I carry all chain, and I work on a minimum of 4:1 scope measured against the depth at high water, not the depth I see when I drop. On the big French tidal ranges that distinction is enormous: Saint-Malo on the north coast can rise as much as 13 metres over six hours on the largest springs, so a spot that is 3 metres deep when you anchor can be 16 metres deep by the early hours. Pay out for the high-water depth or you will be swinging on a 1.5:1 ratio at the top of the tide.
In demanding conditions I go to 7:1, and if I have the swinging room I will run 10:1. The rest of the setup, including chain grade and how I rig the snubber, I have written up separately in the guide to anchor chain and snubber for French anchorages, because it deserves its own treatment.
A second anchor earns its locker space
I keep a second anchor of a different type as my kedge and my insurance. Mine is a Fortress-style aluminium fluke anchor, which holds astonishingly well in the soft mud of French estuaries and weighs almost nothing, so it lives in a cockpit locker rather than on the bow.
The two-anchor setup also solves the crowded-Med problem, where you want to limit your swing among forty other boats. When the Lerins islands anchorage off Cannes fills up in August, restricting your swinging circle stops being polite and becomes essential, and the technique is laid out in using two anchors in a crowded bay.
Galvanised, stainless, or aluminium
The metal your anchor is made of changes the price, the weight and the lifespan, and it is worth a moment's thought before you reach for the prettiest one on the shelf.
Galvanised steel is the default and the sensible buy. It is strong, cheap, and when the coating wears through after several seasons you simply have it re-galvanised for a fraction of the cost of a new anchor. The only downside is that it is not pretty, and a few years of French sand and chain will scuff it.
Stainless steel costs two to three times as much and looks superb sitting on a teak-trimmed bow. It resists corrosion without re-coating. The catch is that polished stainless can be slightly more prone to skating on hard bottoms than the matt finish of galvanised, and the price premium buys you appearance more than holding. I would only choose it if the boat's whole bow setup justified the look.
Aluminium is the interesting outlier. A Spade or Fortress in aluminium holds as well as a much heavier steel anchor while weighing far less, which transforms the handling on a light bow and keeps weight out of the ends of the boat. The penalty is cost and a slightly more delicate alloy. For a kedge or a second anchor that has to live in a locker and be lifted by hand, aluminium is the obvious choice.
For the bower anchor that lives on the roller and does the daily work, galvanised steel in a modern scoop design is what I keep coming back to: it holds, it is affordable, and it is renewable.
What I would buy if I were starting today
For a typical 32 to 42 foot cruising boat doing the French coasts and the canals out to the Med, here is the kit I would put on the bow without overthinking it:
- A new-generation scoop anchor (Rocna, Spade, Vulcan or Mantus), sized one step above the chart recommendation for your loaded displacement.
- Calibrated galvanised chain matched to your windlass gypsy, in 8 or 10 mm depending on boat size.
- A nylon three-strand snubber, around 10 to 12 mm, which stretches enough to absorb the shock load. A 12 mm three-strand nylon line breaks at roughly 3,300 kg, far above anything your boat will load it to, and the stretch is the point.
- A trip line and small buoy for the days you must drop near rock at the edge of a bay.
The Med charterer mooring stern-to in marinas every night will barely use any of this, and the lazy-line technique matters more to them. But the moment you swing onto your own hook off Porquerolles or in a Glenan anchorage, the anchor on your bow is the only thing between you and the rocks. Buy the good one, size it up, and rig the rode properly. The rest is just sleep.
