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Shimbiri

Try Shimbiri: tools for sailors.

Learn the rules of the road with the COLREGs trainer. The Purser and the passage planner are coming soon.

The COLREGs trainer

The collision regulations, rule by rule: moving scenes, navigation light flashcards, the sound signals to listen to, and a quiz.

Learn the rules →

Passage planner

Coming soon

Pick a start and a destination and get a route with the forecast wind and sea, departure windows and tide gates for bars, tuned to your boat.

The Purser

Coming soon

Ask a plain-English question about your boat’s systems and get an answer from the manufacturer’s manuals, with the official source linked.

Want the whole crew aboard, with live systems and every manual? Tell us about the boat.