Ahoy

What it does

Every flag, light, buoy, cloud and signal, one glance away. A pocket field guide for sailors. Free, no account, no ads. Built for the moment on deck, not the classroom. Spot something, look it up, understand it, in a few seconds. When you want to go deeper, an Education tab gives you endless recognition drills, exam style: a light or a day shape appears, you name it, you learn. Ship lights and day shapes now, more on the way.

Every flag, light, buoy, cloud and signal, one glance away. A pocket field guide for sailors. Free, no account, no ads.

Ahoy is a pocket field guide for sailors. Ship lights, signal flags, buoys, weather and VHF. Free, no account, no ads. Ahoy is built for the moment on deck, not the classroom. Spot something, look it up, understand it, in a few seconds. Identify vessels at night by their light pattern, shown from every angle as glowing schematic diagrams. All 36 flags with their meanings, Alpha to Zulu, plus the phonetic alphabet. Lateral and cardinal marks with the shapes each can take, plus the cones, balls and diamonds and what they signal. The Beaufort scale with real sea-state photos, and clouds with what each one means for your weather. Sound-signal patterns for every condition, and ready-to-read VHF…from ahoy.kristof.pro

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