Learn the grammar.

Range lights, fog signals, flashers, occulting — the language the coast speaks in the dark.

Two lights in line, and you know exactly where you are.

Sound that carries when the light can't.

The rhythm is the name — every light blinks its own signature.

Light that goes dark to speak. The opposite of a flash.

Every light has a character

The blink is the name. Here are the five you'll meet on the water.

Never blinks. The steady light that just… is.

F

Equal light, equal dark — a slow, even heartbeat.

Iso 10s

Steady, with a brief blink out. The opposite of a flash.

Oc 6s

One quick flash, then dark. The classic single.

Fl 2s

Three quick flashes, then a long rest.

Fl(3) 15s