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post #19 of Old 01-03-2014
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Re: How high can you point?

Originally Posted by zz4gta View Post
There are a lot of things that effect pointing. Usually a boat can point around 45* from the true wind. Those saying they can tack through 60-70* better be on an all out race boat. 30* off the apparent wind is quite common, but true wind is still another 10-15* off that. Lets stick to talking about the angle we tack through, as that is a much better measure of how a boat points.

Some of the things that effect pointing are:
bottom condition and foils
boat speed
sail condition and cut
rig tension
heel angle
sail trim
weight placement
GPS angle is what counts, with adjustment for current. Wind angle is interesting but slightly off the point.

Eventually, VMG is mostly what counts, though pure pointing can count if space is limited. This will require a little trig, unless you have some cool electronics, but you learned it in high school. Sometimes 100 degrees is faster than 80 degrees, sometimes not; it can depend on waves etc.

(when asked how he reached the starting holds on a difficult rock climbing problem that clearly favored taller climbers - he was perhaps 5'5")

"Well, I just climb up to them."

by Joe Brown, English rock climber

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