Even in the most idyllic of anchorages, the wind can come up in the middle of the night and cause trouble. At times like this we always have an action plan to follow if our anchor begins to drag. Experience has convinced me that when something goes wrong while a boat is at anchor, trouble is caused not by the conditions, but by how the crew responds to those conditions. Having a good, workable exit plan in place before you need it is the best way to prevent surprises.
Before you anchor
If you do some homework before arriving at an anchorage, the chances are better that your anchor will stay put after youve set it properly. I study the charts and cruising guides well before we arrive and decide on the best place to anchor. We choose a fall-back location in the same area in case the spot we want is taken. If theres no room at allthis can happen when an anchorage is very popularits a good idea to leave yourself enough time to power or sail to another safe anchorage while theres still light.
When youve got your spot picked out, first visualize what might happen if the boat rotated 180 degrees. Would it hit any obstacles, sandbars, reefs, rocks, or buoys? Where would the boats around you be relative to your boat? Once the anchor is dropped and weve backed down and set it properly, we sit down and plot an escape route.
We write down the current GPS position along with the courses and relevant navigational details we would need during our escape. I tape one copy to the chart table and another to the steering pedestal. I think its a good idea to discuss the plan with the crew so they know what might happen in an emergency.
I take at least three visual bearings on fixed objects ashore. Ideally, these objects should be visible night and day and should be far enough away that bearings on them will remain more or less constant even if the boat should swing a bit. A church steeple, radio-tower light, or even a distinctive tree towering above the rest will work well, although nearly any landmark will do if it gives you an immediate and reliable reference point (see illustration). Ill write down the names and bearings of these objects to eliminate the possibility of confusion.
Once we have formulated our plan, we talk over other what if scenarios and think about how our plan might relate to them. Again, we write down the plan and the options. If a plan is only in the skippers head, and something happens to incapacitate the skipper, there is no plan.
Ill close with a story from an idyllic anchorage. Two boats came into the anchorage in Panamas San Blas Islands just as the sun was going down. We were in the small inner anchorage, which is protected by a sandbar, but low-light conditions prevented the two boats from crossing the bar into the inner anchorage. That night the wind shifted and the two boats started to drag. Both nearly dragged onto the reef astern of them before they managed to escape. Its true that nothing compares to being able to anchor in paradise. But if you are lucky enough to be there, you must also be prepared to handle the unexpected.