RULE OF THE ROAD 81 (d) When both are running free, with the wind on the same side, the vessel which is to windward shall keep out of the way of the vessel which is to leeward. (e) A vessel which has the wind aft shall keep out of the way of the other vessel. Fig 4.—Rule of the Road. Suppose you are practising boat sailing in a harbour with several other sailing craft tacking, gybing and manoeuvring about, crossing and re-crossing ahead of each other, and let us imagine ourselves to take a trick at the tiller of each of the five boats in turn as shown in Kgure 4. The boats are proceeding in the direction they are heading, the wind is West blowing across the page from left to right as in