Chart No. 1 · K 17
Breakers
Dangers
Clusters of little wave curls mark where seas break — a sign of dangerously shallow water offshore.
What it means
Small wave-curl marks (sometimes abbreviated 'Br') show where the sea breaks over a shoal, bar, or reef even in moderate weather.
Why it matters
Breakers visible from seaward are nature's own danger buoyage. Charted breakers over a bar can make an otherwise navigable entrance impassable in onshore swell — time such entrances carefully.