Sailing
theory
you can operate.
Eleven RYA-aligned courses. Fourteen quizzes. Four browser-native simulators nothing else on the web replicates. Built like a contemporary product — not a 2008 PDF store.
One platform, the three things you actually came for.
Charter lives at eliosail.com ↗Learn
RYA-aligned courses, quizzes, and cheat sheets — browser-native, never paywalled before you can try them.
Apps
Four interactive simulators nobody else has built. Drag, rotate, sound them out. Embed any of them on your site.
Crew
Roster, jobs, and an honest day-rate guide. Built for working sailors, not brokers.
Four interactive instruments. All free. All embeddable.
Open all apps →ColRegs Lights
Drag any vessel through 360°. See exactly which lights an observer sees.
Day Shapes
Hoist anchor balls, NUC cylinders, RAM cones — at correct height and order.
Sound Signals
Hear the actual signals. Synthesised live — no MP3s, no licensing.
Radar
Animated PPI with real-time CPA / TCPA on moving targets you adjust live.
Resources library
Browse all →Twelfths, secondary ports, and the rule that ruins most exams
A worked example you can print, with the corrections most candidates miss.
Read →Cheat sheetColRegs mnemonics that actually stick
The ones we still use afloat — and the ones we threw away.
Read →ComparisonSavvy Navvy vs Navionics, six months on
Both apps, both ways. Where one wins, and which we kept using on a 500 nm passage.
Read →Buying guideEPIRB or PLB — a decision tree
No affiliate kickbacks. Just the one we'd carry, and why.
Read →ProcedureMOB — the 90-second drill
What to do, in order, when you don't have time to think.
Read →WeatherReading a synoptic chart
Pressure systems, fronts, and what tomorrow actually looks like.
Read →Test what you know.
Twenty questions.
No sign-up. We mark it live, explain the rule behind every miss, and tell you honestly whether you're ready to sit it.