How to Choose an Anchor

Anchor choice depends on the boat, expected weather, depth and seabed—not simply a single length figure.

Consider the seabed

Some designs excel in sand and mud; others handle weed, rock or changing bottoms differently. Choose for the bottoms you actually expect to encounter.

Size the complete system

The anchor, chain, rope, shackles, windlass and attachment points form one system. Follow reputable manufacturer guidance and allow a suitable safety margin.

Use enough scope

Holding power depends heavily on the angle of pull. Calculate scope from the bow roller to the seabed, including depth, tide and wave allowance.

Set and monitor it

Lower rather than throw the anchor, lay out rode gradually, apply a controlled reverse load and confirm that the boat is holding. An anchor alarm is helpful backup, not a substitute for judgment and watchkeeping.