Anchor Watch

Before dropping the anchor

• Check forecast wind direction, gusts, squalls, tide and swell.
• Look at the bottom type and depth, not only the shelter.
• Check swing room for the full tide and wind shift, not only present position.
• Avoid a lee shore if the forecast can make it dangerous.
• Have an exit route before dark, including depth, obstacles and traffic.

Set the anchor deliberately

• Use enough scope for the conditions and depth.
• Let the boat lie back and load the anchor progressively.
• Use reverse power carefully to confirm the anchor is holding.
• Use a snubber or bridle if appropriate to reduce shock loads.
• Mark the final anchor position and boat position, not only where the boat stopped.

Reduce sailing around the anchor

Some boats sail from side to side at anchor, especially with wind against tide, gusts, high freeboard or a fin keel. That movement can snatch the chain, load the snubber and make the anchor work harder than necessary.

An anchor riding sail, sometimes simply called an anchor sail, can help the boat lie more steadily to the wind. It will not fix a poor anchorage, poor holding or too little scope, but it can reduce yawing and reduce shock loads on the anchor, chain and deck fittings.

Make the second anchor ready before it is urgent

If the forecast, bottom, swing room or engine reliability worries you, do not leave the second anchor buried under gear. Make it possible to deploy quickly, with rode, shackles, light, gloves and a clear plan.

A second anchor may be the only remaining option if the engine will not start, the boat is dragging toward shallow water, or another anchored boat is getting too close. Preparing it early is much safer than trying to build the system on a dark foredeck while the boat is already moving.

Signs the anchor may be dragging

• The boat stays beam-on or does not settle into the wind like nearby boats.
• The GPS track shows a steady line away from the anchor, not a normal swing arc.
• The chain or snubber loads and releases violently.
• Depth changes steadily in the wrong direction.
• The same shore transit keeps moving.

Immediate actions

• Start the engine early and confirm cooling water.
• Wake crew before the boat is close to danger.
• Turn on instruments, lights and deck lights as needed.
• Take strain off the anchor if possible by motoring gently.
• Decide quickly: reset, pay out more rode, deploy a second anchor, or leave.

Alarm radius, scope and swing

An anchor alarm must match the way the boat can move. A very tight alarm wakes everyone for normal swing. A very wide alarm may warn too late. The useful radius depends on where the anchor is, how much rode is out, water depth, GPS accuracy and nearby dangers.

• Mark the anchor position when the anchor is down, not only after the boat has drifted back.
• Use a smaller alarm radius when rocks, shore or other boats are close.
• Use visual bearings and depth as a second check, because GPS alarms can wander.

Snubber, chafe and light

A snubber is not only for comfort. It reduces shock loads and noise, but it also becomes a working part that can chafe through. Check the lead, chafe protection, hook or knot, and deck fairlead before the windy night begins.

Anchor light and deck visibility matter too. If another boat is moving in the anchorage, you want your boat easy to see.