Alison Chapman's Tips LIGHT WEATHER BOAT AND SAIL TRIM
Alison Chapman’s Tips
LIGHT WEATHER BOAT AND SAIL TRIM
1. Fore and aft - Transom to water is the guideline. The bottom of the boat at the transom should be just touching the water all the time, no matter what angle of lean you have the boat.
2. Sideways lean - Sail shape is the guideline. The hull of your boat is at its most efficient shape to move through the water when it is level, which is why you keep the boat flat when you have wind.
However, when there is little wind, the over-riding factor is the efficiency of the sail to use what little wind is available.
To help that happen, your sail has to 'hang' so that no wind is wasted pushing the sail into its designed shape.
Lean the boat and then adjust the shape of the main with outhaul and by
releasing cunningham and vang.
Do not lean the boat further than is necessary or the weight of the sail will over-ride the effect of the light wind and you won't know if the sail is trimmed to the wind angle correctly.
3. Sheet tension - Use light sheet tension, only trimming to the correct angle for the wind direction and desired course.
AN EASED SAIL IS A FASTER SAIL IN LIGHT WINDS .... DO NOT BIND UP YOUR BOAT BY HAVING REALLY TIGHT SAIL TRIM.