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File - Canadian Wayfarer Association

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Upwind, we tighten the cunningham enough to stretch our (shrunken, 5-years old) luff tape a bit<br />

but stop short of stretching the actual sailcloth in the luff unless the wind really comes up and<br />

we need to move the draft forward.<br />

Note: If your jib is fastened to the luff wire at both ends, you need to make sure that your luff<br />

is not automatically given a cunningham effect as you tighten the halyard (and thus, the jib luff<br />

wire) - i.e. if your sail cloth has shrunk, then the cloth will stretch it as the wire comes under<br />

tension and you will have a vertical cloth wrinkle just aft of your luff wire! This is horribly slow -<br />

especially in light airs!<br />

1.4.3. Genua controls and adjustment 20<br />

It is useful to define light, medium, and heavy air sailing conditions. It can be different for each<br />

skipper/crew/boat combination. It is set by conditions sailing to windward:<br />

light: The crew must sit inside the boat or to leeward to keep the boat flat.<br />

medium: The crew and skipper can keep the boat flat while normally sitting or hiked on the<br />

side deck.<br />

heavy: The crew and skipper cannot keep the boat flat without luffing, easing the sheets<br />

or flattening the sail shape.<br />

The genua sheet<br />

Genua sheets are normally about 6 metres (20 feet) of quarter-inch braided rope as a jib sheet.<br />

(see photo below) Warning: 20 feet of rope is plenty for most purposes but will not allow you to<br />

use a whisker pole to wing the jib - unless you untie the other end!<br />

Please note that this line is quite slippery when you first buy it. It took us several regattas'<br />

worth of racing to get rid of the shine on the rope and replace it with the nice, soft fuzz you see<br />

above.<br />

20 from: Derwyn Hughes: sail shape summary<br />

37

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