The first time I dragged in a crowded anchorage was off the Lerins islands on an August evening, and the thing I remember is not the fear but the helplessness of watching another boat's stern grow in my windscreen while I scrambled to get the engine going. Nobody was hurt and nothing was holed, but it taught me that an anchorage packed gunwale to gunwale removes the one thing that normally saves a dragging boat: room. On the Cote d'Azur in season there is no room, and that changes everything about how you anchor and how you react when it goes wrong.
Why crowded Riviera bays are unforgiving
Open water forgives a dragging anchor. You notice, you sort it, you have lost some ground and nothing else. A summer anchorage off Cannes or in a popular Var bay forgives nothing, because every boat is anchored with the minimum scope its skipper dared use, the swing circles overlap, and a boat that breaks out drifts straight onto a neighbour.
The geometry is the whole problem. A boat's swing circle has a radius equal to all the rode you have out plus the length of the boat, and for an anchor to hold reliably you want a scope of about 5 to 1, five metres of chain for every metre of depth. In a crowded bay nobody can have a 5 to 1 circle without overlapping three other boats, so people shorten up, the holding gets marginal, and the margins that would absorb a gust or a wind shift simply are not there. The katabatic breeze that slides down off the hills after dark, light but enough to swing a fleet, regularly sets off a chain reaction of boats fetching up against each other.
Add the holding ground. Much of the Riviera sea floor is thin sand over rock or, where the protected seagrass grows, a mat you are now banned from anchoring in to protect it. The result is anchors that look set and are not. If you have not read up on where you may and may not drop, the posidonia anchoring ban in France is essential before you cruise this coast, and the broader rules are in Cote d'Azur anchoring rules for 2026.
Anchoring so you do not drag in the first place
Most collisions in a crowded bay are decided at the moment of anchoring, not when the wind gets up. Pick your spot by watching how the boats already there are lying and where they will swing, then drop where your full circle clears theirs, remembering that a boat on chain and a boat on rope swing differently and a motorboat with no keel swings on the wind while you swing on wind and current together.
Drop the anchor, fall back under gentle astern power, and set it properly by digging it in against the engine until you are sure it is holding rather than just sitting on the bottom. Take a transit, two fixed objects ashore in line, so you can see at a glance whether you are moving. Set the anchor alarm on your phone or plotter, because in a tight bay you want to know the instant you start to move, not when you feel the bump. Where space is genuinely too tight for a proper swing circle, two anchors can hold you in a much smaller footprint, a technique worth knowing and covered in using two anchors in a crowded bay.
Then watch your neighbours, because your careful anchoring does not protect you from the boat upwind that dropped on rock and will drag down onto you at two in the morning. The most dangerous boat in any anchorage is rarely your own.
It is worth being deliberate about where in the bay you settle. Anchor too close behind a boat already there and you inherit their swing, so if they drag you both go together. Anchor at the windward edge of the fleet, where the holding is often best and where a drag carries you down into water you have already seen, rather than tucking into the crowded inshore corner where a drag pins you against the rocks or the beach. I will routinely give up a prettier inshore spot for an outer one with a clear escape to seaward, because in a crowded anchorage your exit matters as much as your anchor.
Spotting drag early
Early detection is the whole game, because a boat caught dragging in the first ten metres is recoverable and a boat caught after fifty is in among other hulls. The signs come before the alarm: the transit ashore starts to open, the boat lies differently to the wind, the rode goes slack and then snatches, or you simply feel a faint juddering through the hull as the anchor skips across the bottom. Trust the early signs and act on them. It is far better to re-anchor unnecessarily than to wait for proof.
At night, an anchor watch in a packed bay is not paranoia, it is seamanship. On a settled forecast I will still wake to check the transit if the wind shifts, because a wind shift is exactly what unsticks a marginally set anchor and swings the whole fleet onto new headings at once.
When it happens: the order of actions
If you are dragging toward another boat, the priority order is fixed and worth rehearsing so you do not freeze.
- Start the engine first, before anything else, so you have power the moment you need it. An engine that will not start is the reason a drag becomes a collision.
- Get crew on deck and fenders ready on the side you are drifting toward.
- Take the way off with the engine, holding station against the wind so you stop closing on the boat behind, even if the anchor is still half-set and dragging.
- Once you are holding under power and the immediate collision is averted, decide calmly whether to retrieve and re-anchor or to leave for a marina. Do not try to re-set an anchor while still drifting down on someone; hold off under power first, then sort it out.
If a boat is dragging down onto you and nobody is aboard her, you may have to fend off, and in the dark with two heavy hulls grinding together that is genuinely dangerous, so keep hands and limbs clear and use the boathook and fenders, never your body. Wake the neighbours by every means you have, lights, horn, shouting, because a sleeping crew on a dragging boat is the worst combination in the bay.
What catches people out on this coast at night
The thing that catches people on this coast is the calm. The bay is glassy, the forecast is settled, and everyone relaxes, which is exactly when the light overnight breeze off the land swings the fleet and finds the badly set anchors. I now treat a flat calm August evening on the Riviera as a higher risk than a breezy one, because the breezy one keeps everyone alert and the calm one breeds complacency.
If the anchorage is genuinely packed and the holding looks doubtful, the honest answer is sometimes to take a berth instead, even at Riviera prices in August, and sleep. The trade-off between the two is worked through in anchoring versus a marina in France and the cost, and the etiquette that keeps a crowded bay civil is in Riviera anchoring etiquette. A dragging anchor in open Atlantic water is a chore. A dragging anchor in a August Riviera anchorage at midnight is a collision waiting for someone to be slow, and the only reliable defence is to anchor as if your neighbours will drag onto you, watch as if you will drag onto them, and have the engine ready before you ever need it.
