This is the fourth in a series of Rules columns explaining the new rules that apply at marks and obstructions. This month, I complete my discussion of Rule 18, the rule that applies at almost all ...

In the last two issues, I’ve explored the risks and rewards of certain moves you might make while rounding a mark. This month I’ll consider how the rules cover tacks made near marks.Most tacks near a ...

Sailing upwind seems impossible, yet it shaped exploration, trade, and naval power for centuries. This breaks down the physics of lift, hull resistance, keels, and tacking to show how sailors learned ...