I crossed behind a starboard boat with no contact — that's fine, right?

Not necessarily — under Rule 10 the port-tack boat must keep clear, and 'we never touched' is not a defence: if the starboard boat has to bear away to avoid you, you have already broken the rule. Cross only when you are certain you will clear her without forcing her to change course. (World Sailing Case 50.)

📖 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)

▶ Watch on YouTube ↓ Download (via YouTube)
<iframe width="560" height="315" src="https://www.youtube.com/embed/jCSLYIpc_I0" title="Sailing Kiwi" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<p><a href="https://sailing.kiwi.nz/v/jCSLYIpc_I0/">Source: Sailing Kiwi</a></p>

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Next on this shelf — The Upwind Beat