Calling Starboard Get the app →

Rules of the Road · Sail

Stop guessing at the helm. Practice real right-of-way calls until they're instinct.

Right-of-way rules on the water shouldn't be a guessing game. Calling Starboard drills you with real-world scenarios until the calls become second nature. No manuals, no rereading the same diagram for the tenth time - just quick, practical practice you can do anywhere.

Get it on the App Store - $5.99

iOS & iPadOS · one-time purchase · no subscription

Learn it by doing

Real scenarios, right in your pocket

This is exactly what you'll see in the app. Tap in and make the call.

Calling Starboard quiz screen: two boats crossing tacks, asking which one must give way Calling Starboard answer revealed: Boat A gives way, port tack yields to starboard tack

Tap the screen to see the answer and the rule behind it.

I kept forgetting, so I built something that wouldn't let me.

There are only three rules that decide who gives way under sail - but they're not the kind of thing you can look up in the half-second before two boats close the gap.

I couldn't reliably remember them, so I built a way to drill them until I could. No account, no clutter - open it, get a scenario, answer it, see why.

Three rules. That's it.

Crossing tacks

Two boats, different tacks, courses cutting through each other. Port always gives way to starboard.

Windward vs. leeward

Same tack, closing in from behind or alongside. Whoever's further upwind gives way.

Overtaking

Coming up from clear astern. The overtaking boat gives way - tack doesn't matter.

Who it's for

Know the rules. Nail the calls.

Practice until it's instinct.

$5.99

One time. No subscription. Yours for good.

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