How do I know who's on which tack when running dead downwind?
Downwind you can't read tack from heading — both boats point roughly the same way. Instead, the side your mainsail lies on names your tack: boom out to starboard means you're on port tack, boom out to port means starboard tack. If the booms are on opposite sides, the boats are on opposite tacks and Rule 10 applies — port keeps clear of starboard.
📖 Want Rule 10 in more depth? Elvstrøm Explains the Racing Rules 2025-2028 sets out every rule with plain-English explanations and diagrams. (affiliate link)
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<p><a href="https://sailing.kiwi.nz/v/ZBEG30UlBX4/">Source: Sailing Kiwi</a></p>Go deeper: books and gear
- Elvstrøm Explains the Racing Rules 2025-2028 — Every rule, with plain-English explanations and diagrams.
- The Sail Racing Bible — A complete guide to dinghy racing.
- Five Oceans masthead wind indicator — See the wind direction at a glance.
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