SAILING GLOSSARY

Shoal

A shoal is an area where the seabed or riverbed lies at a relatively shallow depth, which can pose a hazard to boats, especially those with a deeper draft. It may consist of sand, mud, rocks, or other materials. Some shoals are natural, while others can form or shift over time, particularly under the influence of currents and tides. They are marked on nautical charts to help navigators avoid running aground. When sailing, it’s wise to keep an eye on the depth: a shoal can quickly turn a pleasant outing into an unexpected stop!