I dropped my anchor for the first time in a pretty bay near Cannes, watched it sit there for about ninety seconds, then watched the boat slide gently backwards towards a moored gin palace while I stood on the bow holding the chain and feeling like a complete fraud. The anchor had not dug in. It had skated across the bottom because I had let out far too little chain and never set it properly. Nobody was hurt, nothing was scratched, but I learned more in that minute of mild panic than in a season of reading about it.
Anchoring looks simple. You throw the heavy thing over the side and it holds the boat. It is not quite that, and the gap between the two is where beginners come unstuck. Let me walk you through getting it right the first time, in French waters specifically, because France has some local wrinkles you need to know about before you even pick the spot.
Before anything: do not anchor in the seagrass
This is the rule that catches visitors out, and it has teeth. Across the French Mediterranean, the seabed in many shallow bays is carpeted with posidonia, a slow-growing seagrass that takes years to recover from a single dragging anchor. It only grows a few millimetres a year. France has been steadily tightening the law to protect it.
The headline fines aimed at superyachts over 24 metres run as high as 150,000 euros, but you should not assume a small boat is exempt. Penalties for an individual can reach 22,500 euros, and the rules apply broadly. The practical effect for a beginner is this: you must learn to tell sand from seagrass before you let go.
On the chart, look for the symbol marking weed. On the water, sand shows pale turquoise and seagrass shows dark patches that look like cloud shadows on the seabed. Anchor in the pale sand, never the dark weed. If the whole bay is weed, find a mooring buoy or move on. The full picture of where you can and cannot drop the hook is in the Cote d'Azur anchoring rules guide, and it is genuinely worth reading before your first Mediterranean season.
Choosing the spot
Once you have found good holding ground, the rest is about shelter and swinging room. I ask myself four questions before committing:
- Which way is the wind forecast to blow, tonight and tomorrow morning? I want land between me and the wind.
- How deep is it now, and what will the tide do? On the Atlantic and Channel coasts the range can be several metres, so a comfortable depth at high water can leave you sitting on the mud at low. On the Med the tide is tiny, often under half a metre, so this matters far less.
- How much room is there to swing? Your boat will pivot around the anchor as the wind shifts. Picture a full circle the length of your rode and check nothing is inside it.
- What is the bottom? Sand and firm mud hold beautifully. Weed, rock and shingle are unreliable.
How much chain to let out
This is the number I got wrong on day one, and it is the single most important figure in anchoring. The amount of rode you put out, measured against the depth, is called scope, and it is expressed as a ratio.
The working rule is at least 5:1 in calm conditions and 7:1 for an overnight stay or anything breezy. So in 4 metres of water, with maybe a metre and a half from the waterline up to your bow roller, you are anchoring in an effective depth of about 5.5 metres, and you want somewhere between 27 and 39 metres of chain out. If it is blowing hard, 10:1 is not excessive.
People consistently let out too little because the deck looks tidier and the chain feels reassuringly heavy. It is not enough. The long, low angle of a generous scope is what lets the anchor dig in and stay dug in. A steep angle just plucks it straight out of the bottom, which is exactly what happened to me at Cannes.
Setting the anchor properly
Dropping it is not the same as setting it. Here is the sequence I use now, every single time:
- Motor up to the spot and stop the boat dead over the ground.
- Lower the anchor under control until it touches bottom. Do not throw it in a heap, because the chain piles on top of the anchor and fouls it.
- As the boat drifts back, pay out chain steadily until you have your full scope.
- Snub the chain off, then put the engine gently astern and hold it there. Watch a transit ashore, two fixed objects lined up. If they stay lined up, the anchor is holding. If they slide, it is dragging, so haul up and start again.
That astern-pull test is the step beginners skip and the reason boats drag in the night. Sixty seconds of patience buys you a sound sleep.
A word on anchor types and ground
You will anchor better if you understand what is on the bottom and what your anchor is good at. Modern scoop or spade-type anchors (the Rocna, Spade and Mantus style) bury themselves fast and hold hard in sand and firm mud, which is most of what you meet in French anchorages. The older plough and fluke designs work too but are fussier about setting. Whatever hangs on your bow, the principle is the same: it holds by digging into soft ground, so it needs soft ground to dig into.
That is why the seabed survey matters as much as the anchor. Sand and firm mud are gold. Soft silt holds poorly until the anchor is buried deep, so let out extra scope and set it hard. Weed is treacherous because the anchor sits on top of the foliage and never reaches the soil, which is doubly bad in France because the weed in question is often protected posidonia you must not disturb anyway. Rock and large shingle rarely hold at all and should be avoided unless there is a known sand patch. When in doubt, the clear Mediterranean water is your friend: motor slowly over the spot and look down before you commit.
A heavier chain helps more than people expect. The weight of the chain lying along the seabed keeps the pull on the anchor low and horizontal, which is exactly the angle that makes it dig in rather than pull out. This is why an all-chain rode, or chain plus a heavy snubber, outperforms a light rope rode for the same length, and why letting out generous scope works so well.
Through the night
Set an anchor alarm on your plotter or phone before you turn in, so it wakes you if the boat moves outside a set circle. Note your transit and your depth before dark. If the wind is forecast to pipe up, let out more scope as insurance rather than less. And keep the engine ready: if you do drag at two in the morning, you want to be motoring off, not fumbling for the ignition.
A settled night on the hook is one of the great pleasures of cruising, and once you trust your anchor it changes how you sail. That confidence feeds straight into your first night sail, because a boat you trust to sit overnight is a boat you trust in the dark.
Where to practise in France
Different coasts ask different things of you. The Mediterranean is the gentlest classroom for the mechanics of anchoring, weak tides and clear water that lets you see the bottom, as long as you respect the seagrass. The Atlantic and Channel coasts add real tidal range, which complicates the depth sums but teaches you faster. Brittany in particular has superb anchorages over clean sand, and the specifics of holding, shelter and tide there are covered in the anchoring in Brittany guide.
My advice for the first dozen times: anchor in daylight, in settled weather, somewhere you can clearly see the bottom, and always set it with the engine. Build the habit while it is easy. Then, when you arrive somewhere stunning at dusk with the wind getting up, the routine is already in your hands and your first time anchoring is a memory rather than a worry.
